Re: [CentOS] USB Memory Key not recognized

[partha chowdhury]

James B. Byrne wrote:
> Intel DQ35JO MB
> CentOS-5.3 2.6.18-92.1.22.el5xen
> x86_64
> 
> I have a USB meory key (Kingston) that I formally used with a
> CentOS-5.2 (32bit) system.  When I plug it into a connector slot the
> light on the key comes on but there are no entries created in /media
> and no entries made to the /var/log/messages file.
> 
> I have a usb mouse and keyboard attached to the same system. Both
> work fine.
> 
> Is there a problem because I am running xen?  Is this related to the
> host being a 64 bit system?  Is there something else that I should
> do to enable this devices?
> 
> 
what do /sbin/lsusb and fdisk -l show ?
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Re: [CentOS] question on hwclock

[Andreas Rogge]

A Virtual Machine? These often don't have their own hwclock...

Am Dienstag, den 17.02.2009, 21:08 -0500 schrieb Jerry Geis:
> 
> this is what I get on standard 5.2 x86_64.
> 
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Re: [CentOS] realtime backup

[CentOS List]

>> >>> For a speedy backup, could put the db on LVM. Then your procedure
would 
>> >>> be shutdown/freeze db, make lv snapshot, startup/unfreeze db, 
>> >>> rsync/backup data, remove snapshot.
>> >> That's what I'd suggest too, but be warned that performance on that
>> >> database (if gets to be of any size to be useful) would completely
>> >> suck... not unlike driving at 90mph and with the ebrake on and
>> >> constantly up-and-down-shifting...
>> >>
>> >>   -I
>> > 
>> > Would a decent alternative be a master/slave, with the dumps being done
>> > from the slave. That way if the slave bogs down during the dump, it can
catch
>> > up afterwards. The master shouldn't slow down at all, or very minimally
as it
>> > is caching the slave transactions.
>> > 
>> One too many "would's"...

> ;) That would work, and I've done that (though not at the 5-minute
> interval) in production environments.  But since the OP hasn't responded
> to this thread with any type of follow-up detail (like the size of the
> db), I'm wondering how much time I want to spend putting out possible
> solutions...

Thanks everyone. At the present I am looking at 150mb worth of database. I
stumbled across Zmanda. Has anything tried it? Is it suitable for my case? 



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Re: [CentOS] OT: Oracle client logging issue

[Jay Leafey]

Tom Brown wrote:

Hi

We have an app on CentOS 5 that is in pyton and uses some form of thin 
oracle client called oracle-instantclient-basic, this error is more 
towards that client i think but if anyone has seen this before then it 
would be great to hear about it.


The basic issue is that we are getting lots of sqlnet.log 's on the 
filesystem and we dont seem to be ablr to configure the location of that 
log as there is no oracle configuration for the client as such it seems 
in terms of tnsnames etc that you'd get with the full client.


Anyone ever used this client before or know how to direct its logs 
somewhere else?


thanks


The name and location of the SQLnet log file is determined by options in 
the sqlnet.ora file, usually found in $ORACLE_HOME/network/admin or 
wherever the environment variable TNS_ADMIN points.  The options are:


LOG_FILE_CLIENT - the name of the file (default sqlnet.log)
LOG_DIRECTORY_CLIENT - the directory (default is your current directory)

If you don't set these values, the default dumps the sqlnet.log file in 
the current working directory when a program runs into an Oracle exception.


Hope that helps!
--
Jay Leafey - Memphis, TN
jay.lea...@mindless.com


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Ray Van Dolson]

On Wed, Feb 18, 2009 at 06:20:59PM -0500, Ross Walker wrote:
> On Feb 18, 2009, at 2:29 PM, Ray Van Dolson  wrote:
> 
> > On Wed, Feb 18, 2009 at 11:12:13AM -0800, John R Pierce wrote:
> >> Scott Silva wrote:
> >>> You can make LVM over raid 1's in Disk Druid, but I don't think it  
> >>> will do
> >>> raid 10. And you cannot boot from software raid 5 (yet).
> >>>
> >>
> >> a LVM over several raid 1's is effectively raid10 as LVM will  
> >> stripe the
> >> volumes across the devices.   It would be nice if  LVM could do
> >> mirorring too (like LVM on AIX does) and was tighter integrated  
> >> with the
> >> file system tools (again, like LVM on AIX...  grow a LV and it  
> >> grows the
> >> JFS thats sitting on it, transparently and online).
> >>
> >
> > Can't Linux LVM do mirroring?  I swear I read that it could in the man
> > page.  Never have tried it however and you certainly can't set it up
> > from disk druid in anaconda.
> 
> Lvm can do mirroring, but of requires a third drive to do mirror  
> logging which  kind of defeats the whole raid1 concept, I guess if you  
> have a VG of a plethora of drives this is no biggie.
> 
> And besides grub still after all these years does not support booting  
> LVM volumes.
> 
> Jeez, you think with the Solaris folk able to boot off of ZFS now from  
> grub we'd have  the ability to boot off of LVM by now!

Hehe, I guess the fact that we can achieve fairly similar results using
md + LVM has made it a lower priority. :-/

Ray
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Ross Walker]

On Feb 18, 2009, at 2:29 PM, Ray Van Dolson  wrote:

> On Wed, Feb 18, 2009 at 11:12:13AM -0800, John R Pierce wrote:
>> Scott Silva wrote:
>>> You can make LVM over raid 1's in Disk Druid, but I don't think it  
>>> will do
>>> raid 10. And you cannot boot from software raid 5 (yet).
>>>
>>
>> a LVM over several raid 1's is effectively raid10 as LVM will  
>> stripe the
>> volumes across the devices.   It would be nice if  LVM could do
>> mirorring too (like LVM on AIX does) and was tighter integrated  
>> with the
>> file system tools (again, like LVM on AIX...  grow a LV and it  
>> grows the
>> JFS thats sitting on it, transparently and online).
>>
>
> Can't Linux LVM do mirroring?  I swear I read that it could in the man
> page.  Never have tried it however and you certainly can't set it up
> from disk druid in anaconda.

Lvm can do mirroring, but of requires a third drive to do mirror  
logging which  kind of defeats the whole raid1 concept, I guess if you  
have a VG of a plethora of drives this is no biggie.

And besides grub still after all these years does not support booting  
LVM volumes.

Jeez, you think with the Solaris folk able to boot off of ZFS now from  
grub we'd have  the ability to boot off of LVM by now!

-Ross

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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Christopher Chan]

> a LVM over several raid 1's is effectively raid10 as LVM will stripe the 
> volumes across the devices.   It would be nice if  LVM could do 
> mirorring too (like LVM on AIX does) and was tighter integrated with the 
> file system tools (again, like LVM on AIX...  grow a LV and it grows the 
> JFS thats sitting on it, transparently and online).
>
>   

You heretic! Why are you asking for ZFS?


(btw the raid10 module is relatively new and is different from doing 
raid1+raid0 and is not supported by anaconda unlike raid1+0)
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Re: [CentOS] Gpg-agent will not start

[Lanny Marcus]

On Wed, Feb 18, 2009 at 3:42 PM, Anne Wilson  wrote:
> On Wednesday 18 February 2009 20:25:44 Lanny Marcus wrote:
>> On Wed, Feb 18, 2009 at 2:30 PM, Anne Wilson 
> wrote:
>> > On Wednesday 18 February 2009 18:50:03 Lanny Marcus wrote:
>> >> On 2/18/09, Anne Wilson  wrote:
>> >> > On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
>> >> >> Anne Wilson wrote:
>> >> >> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:

>> >> Anne: Glad you eliminated that problem! I'm curious as to why you are
>> >> using the Konqueror web browser. The version that 
>> > I was trying to use Konqueror as a file manager :-)  The root konqueror
>> > (and other users' konqueror) were all fine, but my ~/.kde got nuked
>> > during extreme
>> 
>> Thank you for the explanation. If you use KDE (I rarely do, but we use
>> some KDE Applications), I think that's the plan. To use Konqueror as
>> your File Manager. Sounds like the Navigation is tough.
>
> When it's working properly it's a breeze, but everything that makes file
> management possible is what I'd lost :-(  I'm a happy bunny now, though.  It's
> all working again, and (fingers crossed and hope fate isn't listening) I think
> that gpg and konqueror were the last problems to iron out.  They were also
> among the most important, though, after IMAP.

Glad you have things up and running again. Since you use KDE, and to
get closer to the topic of this thread, do you use KGpg? I've tried it
a few times.
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Re: [CentOS] realtime backup

[Ian Forde]

On Wed, 2009-02-18 at 13:57 -0800, Scott Silva wrote:
> on 2-18-2009 1:45 PM Scott Silva spake the following:
> > on 2-18-2009 1:36 PM Ian Forde spake the following:
> >> On Wed, 2009-02-18 at 15:35 -0500, Toby Bluhm wrote:
> >>> For a speedy backup, could put the db on LVM. Then your procedure would 
> >>> be shutdown/freeze db, make lv snapshot, startup/unfreeze db, 
> >>> rsync/backup data, remove snapshot.
> >> That's what I'd suggest too, but be warned that performance on that
> >> database (if gets to be of any size to be useful) would completely
> >> suck... not unlike driving at 90mph and with the ebrake on and
> >> constantly up-and-down-shifting...
> >>
> >>-I
> > 
> > Would a decent alternative be a master/slave, with the dumps being done
> > from the slave. That way if the slave bogs down during the dump, it can 
> > catch
> > up afterwards. The master shouldn't slow down at all, or very minimally as 
> > it
> > is caching the slave transactions.
> > 
> One too many "would's"...

;) That would work, and I've done that (though not at the 5-minute
interval) in production environments.  But since the OP hasn't responded
to this thread with any type of follow-up detail (like the size of the
db), I'm wondering how much time I want to spend putting out possible
solutions...

-I

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Re: [CentOS] realtime backup

[Scott Silva]

on 2-18-2009 1:45 PM Scott Silva spake the following:
> on 2-18-2009 1:36 PM Ian Forde spake the following:
>> On Wed, 2009-02-18 at 15:35 -0500, Toby Bluhm wrote:
>>> For a speedy backup, could put the db on LVM. Then your procedure would 
>>> be shutdown/freeze db, make lv snapshot, startup/unfreeze db, 
>>> rsync/backup data, remove snapshot.
>> That's what I'd suggest too, but be warned that performance on that
>> database (if gets to be of any size to be useful) would completely
>> suck... not unlike driving at 90mph and with the ebrake on and
>> constantly up-and-down-shifting...
>>
>>  -I
> 
> Would a decent alternative be a master/slave, with the dumps being done
> from the slave. That way if the slave bogs down during the dump, it can catch
> up afterwards. The master shouldn't slow down at all, or very minimally as it
> is caching the slave transactions.
> 
One too many "would's"...

-- 
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You hope everybody uses it, and
you notice quickly if they don't



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Re: [CentOS] realtime backup

[Scott Silva]

on 2-18-2009 1:36 PM Ian Forde spake the following:
> On Wed, 2009-02-18 at 15:35 -0500, Toby Bluhm wrote:
>> For a speedy backup, could put the db on LVM. Then your procedure would 
>> be shutdown/freeze db, make lv snapshot, startup/unfreeze db, 
>> rsync/backup data, remove snapshot.
> 
> That's what I'd suggest too, but be warned that performance on that
> database (if gets to be of any size to be useful) would completely
> suck... not unlike driving at 90mph and with the ebrake on and
> constantly up-and-down-shifting...
> 
>   -I

Would a decent alternative would be a master/slave, with the dumps being done
from the slave. That way if the slave bogs down during the dump, it can catch
up afterwards. The master shouldn't slow down at all, or very minimally as it
is caching the slave transactions.




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Re: [CentOS] realtime backup

[Ian Forde]

On Wed, 2009-02-18 at 15:35 -0500, Toby Bluhm wrote:
> For a speedy backup, could put the db on LVM. Then your procedure would 
> be shutdown/freeze db, make lv snapshot, startup/unfreeze db, 
> rsync/backup data, remove snapshot.

That's what I'd suggest too, but be warned that performance on that
database (if gets to be of any size to be useful) would completely
suck... not unlike driving at 90mph and with the ebrake on and
constantly up-and-down-shifting...

-I

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Re: [CentOS] Question about sub-domains

[John R Pierce]

Joost Waversveld wrote:
> Bo Lynch wrote:
>   
>> We currently have a web server that is running apache on cent 5.2.
>> We are upgrading our student info system so that it allows web access and
>> the vendor (powerschool) is stating that this has to be a registered
>> domain or a sub domain and only runs on Windows Server. My question is can
>> you tell apache to point a subdomain to a diiferent IP address. For
>> example, Our domain is currently amelia.k12.va.us. If someone goes to
>> powerschool.amelia.k12.va.us it points to another IP other than itself?
>> I have no experience with sub-domains so any input would be greatly
>> appreciated.
>> Thanks
>> 
>
> You do not have to do this in Apache. The thing you need is a change in 
> the DNS. The DNS is a system that convert names (Like 
> powerschool.amelia.k12.va.us) in ip addresses.
>
> To change the DNS you need to contact the person / company that controls 
> the DNS of your domain.
>   


who appears to be... 

$ host -t NS amelia.k12.va.us
amelia.k12.va.us name server ns1-auth.sprintlink.net.
amelia.k12.va.us name server ns2-auth.sprintlink.net.
amelia.k12.va.us name server ns3-auth.sprintlink.net.
amelia.k12.va.us name server dns-netva.bev.net.

for whatever thats worth (about US$0.02)


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Re: [CentOS] Gpg-agent will not start

[Anne Wilson]

On Wednesday 18 February 2009 20:25:44 Lanny Marcus wrote:
> On Wed, Feb 18, 2009 at 2:30 PM, Anne Wilson  
wrote:
> > On Wednesday 18 February 2009 18:50:03 Lanny Marcus wrote:
> >> On 2/18/09, Anne Wilson  wrote:
> >> > On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
> >> >> Anne Wilson wrote:
> >> >> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
> >> >
> >> > Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just
> >> > leaves the terrible konqueror problem, and no-one seems to have any
> >> > ideas on that. :-(
> >>
> >> Anne: Glad you eliminated that problem! I'm curious as to why you are
> >> using the Konqueror web browser. The version that comes with CentOS is
> >> quite basic. I use Mozilla Firefox 99% of the time, but there have
> >> been a few times when I needed to use Konqueror, to get into a few web
> >> sites. Lanny
> >
> > I was trying to use Konqueror as a file manager :-)  The root konqueror
> > (and other users' konqueror) were all fine, but my ~/.kde got nuked
> > during extreme
>
> 
> Thank you for the explanation. If you use KDE (I rarely do, but we use
> some KDE Applications), I think that's the plan. To use Konqueror as
> your File Manager. Sounds like the Navigation is tough.

When it's working properly it's a breeze, but everything that makes file 
management possible is what I'd lost :-(  I'm a happy bunny now, though.  It's 
all working again, and (fingers crossed and hope fate isn't listening) I think 
that gpg and konqueror were the last problems to iron out.  They were also 
among the most important, though, after IMAP.

Anne


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Re: [CentOS] realtime backup

[Toby Bluhm]

Joost Waversveld wrote:


> 
> 1.
> ===
> RAID IS NO BACKUP! RAID is only to survive hardware failure of the hard 
> disk(s) (and only if you don't use RAID0!).
> 
> Other people are mentioning the Master/Slave setup. This will do if you 
> just need one up to date backup for the coincidence the complete master 
> server fails but not for the occasion someone / something enters the 
> wrong SQL query and deletes the wrong data! Then the slave server will 
> also execute this SQL query and deletes the data also!
> 
> If you want to have the opportunity to go back in time, then you have to 
> make dumps through mysqldump.
> 
> 2.
> ===
> The bigger the data, the slower the backup will be, the longer the 
> tables will be locked, the greater is the change your users will notice 
> it with using the application.

For a speedy backup, could put the db on LVM. Then your procedure would 
be shutdown/freeze db, make lv snapshot, startup/unfreeze db, 
rsync/backup data, remove snapshot.


-- 
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Toby Bluhm]

John R Pierce wrote:
> Ray Van Dolson wrote:
>> Can't Linux LVM do mirroring?  I swear I read that it could in the man
>> page.  Never have tried it however and you certainly can't set it up
>> from disk druid in anaconda.
>>   
> 
> 
> dunno.  the word 'mirror occurs exactly once in the man page for lvm(8)
> 
> lvconvert -- Convert a logical volume from linear to mirror or 
> snapshot.
> 
> 


It's in the lvcreate manpage . . .


LVM mirroring seems rather quirky to me - I'd rather use md raid1 sets 
as phy vols.


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Re: [CentOS] Question about sub-domains

[Joost Waversveld]

Per Qvindesland wrote:
> Put in a in a record pointing towards your apache server, I would strongly
> recommend to configure a virtual domain on your apache server also so apache
> also knows what is being called.
> 
> Per
> 
> 
> On 2/18/09 8:55 PM, "Joost Waversveld"  wrote:
> 
>> To change the DNS you need to contact the person / company that controls 
> 
> 
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The OP mentioned the new sub-domain needs to be on a Windows server, so 
Apache does not have anything to do with this if you solve it by DNS.

Best regards,

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Re: [CentOS] Gpg-agent will not start

[Lanny Marcus]

On Wed, Feb 18, 2009 at 2:30 PM, Anne Wilson  wrote:
> On Wednesday 18 February 2009 18:50:03 Lanny Marcus wrote:
>> On 2/18/09, Anne Wilson  wrote:
>> > On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
>> >> Anne Wilson wrote:
>> >> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
>>
>> > Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just
>> > leaves the terrible konqueror problem, and no-one seems to have any ideas
>> > on that. :-(
>>
>> Anne: Glad you eliminated that problem! I'm curious as to why you are
>> using the Konqueror web browser. The version that comes with CentOS is
>> quite basic. I use Mozilla Firefox 99% of the time, but there have
>> been a few times when I needed to use Konqueror, to get into a few web
>> sites. Lanny
>
> I was trying to use Konqueror as a file manager :-)  The root konqueror (and
> other users' konqueror) were all fine, but my ~/.kde got nuked during extreme

Thank you for the explanation. If you use KDE (I rarely do, but we use
some KDE Applications), I think that's the plan. To use Konqueror as
your File Manager. Sounds like the Navigation is tough.
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Ray Van Dolson]

On Wed, Feb 18, 2009 at 11:51:55AM -0800, John R Pierce wrote:
> Ray Van Dolson wrote:
> > Can't Linux LVM do mirroring?  I swear I read that it could in the man
> > page.  Never have tried it however and you certainly can't set it up
> > from disk druid in anaconda.
> >   
> 
> 
> dunno.  the word 'mirror occurs exactly once in the man page for lvm(8)
> 
> lvconvert -- Convert a logical volume from linear to mirror or 
> snapshot.
> 
> 
> the man page on lvconvert has more info, and this 
> http://www.centos.org/docs/5/html/5.2/Cluster_Logical_Volume_Manager/mirrored_volumes.html
>   
> certainly implies CentOS5 supports it.
> 
> glad to know thats finally there.  however, it doesn't seem to support 
> little things like hot spares or automatic rebuilding.   in fact, the 
> rebuild process looks involved and convoluted...   
> http://www.centos.org/docs/5/html/5.2/Cluster_Logical_Volume_Manager/mirrorrecover.html
> 

The other side of the coin (as I think you mentioned) is that many are
not comfortable having LVM handle the mirroring.  Are its mirroring
abilities as mature or fast as md?  It's certainly not documented as
well at the very least. :)

For now, I prefer doing my mirroring with md and the striping with LVM.
Would be interesting to hear anyone else's experiences with LVM
mirroring however.

Ray
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Re: [CentOS] Question about sub-domains

[Per Qvindesland]

Put in a in a record pointing towards your apache server, I would strongly
recommend to configure a virtual domain on your apache server also so apache
also knows what is being called.

Per


On 2/18/09 8:55 PM, "Joost Waversveld"  wrote:

> To change the DNS you need to contact the person / company that controls 


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Re: [CentOS] Question about sub-domains

[Joost Waversveld]

Bo Lynch wrote:
> We currently have a web server that is running apache on cent 5.2.
> We are upgrading our student info system so that it allows web access and
> the vendor (powerschool) is stating that this has to be a registered
> domain or a sub domain and only runs on Windows Server. My question is can
> you tell apache to point a subdomain to a diiferent IP address. For
> example, Our domain is currently amelia.k12.va.us. If someone goes to
> powerschool.amelia.k12.va.us it points to another IP other than itself?
> I have no experience with sub-domains so any input would be greatly
> appreciated.
> Thanks

You do not have to do this in Apache. The thing you need is a change in 
the DNS. The DNS is a system that convert names (Like 
powerschool.amelia.k12.va.us) in ip addresses.

To change the DNS you need to contact the person / company that controls 
the DNS of your domain.

The windows server needs to listen to the domain 
powerschool.amelia.k12.va.us though.

Best regards,


-- 
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[John R Pierce]

Ray Van Dolson wrote:
> Can't Linux LVM do mirroring?  I swear I read that it could in the man
> page.  Never have tried it however and you certainly can't set it up
> from disk druid in anaconda.
>   


dunno.  the word 'mirror occurs exactly once in the man page for lvm(8)

lvconvert -- Convert a logical volume from linear to mirror or 
snapshot.


the man page on lvconvert has more info, and this 
http://www.centos.org/docs/5/html/5.2/Cluster_Logical_Volume_Manager/mirrored_volumes.html
  
certainly implies CentOS5 supports it.

glad to know thats finally there.  however, it doesn't seem to support 
little things like hot spares or automatic rebuilding.   in fact, the 
rebuild process looks involved and convoluted...   
http://www.centos.org/docs/5/html/5.2/Cluster_Logical_Volume_Manager/mirrorrecover.html


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Re: [CentOS] realtime backup

[Joost Waversveld]

>> Or just use a RAID array (eg software RAID in mirror mode: RAID1).
>>
> 
> RAID IS NOT BACKUP
> 
> To the OP:
> It would be helpful if you were more descriptive about what you are
> trying to accomplish.  Are you worried about disk failures?  Are you
> worried about the whole system failing?  What about the case where
> invalid data is added to the database? (or the database gets corrupted
> in general?)  Do you want to have a hot backup of the database
> standing by so you can switch to it if the main one goes down?  Each
> of these have different solutions.
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1.
===
RAID IS NO BACKUP! RAID is only to survive hardware failure of the hard 
disk(s) (and only if you don't use RAID0!).

Other people are mentioning the Master/Slave setup. This will do if you 
just need one up to date backup for the coincidence the complete master 
server fails but not for the occasion someone / something enters the 
wrong SQL query and deletes the wrong data! Then the slave server will 
also execute this SQL query and deletes the data also!

If you want to have the opportunity to go back in time, then you have to 
make dumps through mysqldump.

2.
===
The bigger the data, the slower the backup will be, the longer the 
tables will be locked, the greater is the change your users will notice 
it with using the application.

Best regards,

-- 
Joost Waversveld
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Re: [CentOS] Question about sub-domains

[Scott Silva]

on 2-18-2009 11:40 AM Bo Lynch spake the following:
> We currently have a web server that is running apache on cent 5.2.
> We are upgrading our student info system so that it allows web access and
> the vendor (powerschool) is stating that this has to be a registered
> domain or a sub domain and only runs on Windows Server. My question is can
> you tell apache to point a subdomain to a diiferent IP address. For
> example, Our domain is currently amelia.k12.va.us. If someone goes to
> powerschool.amelia.k12.va.us it points to another IP other than itself?
> I have no experience with sub-domains so any input would be greatly
> appreciated.
> Thanks
This is easily done with DNS or redirects. If you control your DNS, you just
need an "A" record pointing to powerschool.amelia.k12.va.us with an ip address
reachable by the target audience (internal or external). With redirects you
could do it in apache, but you still need the servers ip address.


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Re: [CentOS] Gpg-agent will not start

[Anne Wilson]

On Wednesday 18 February 2009 19:34:00 Scott Silva wrote:
> on 2-18-2009 11:30 AM Anne Wilson spake the following:
> > On Wednesday 18 February 2009 18:50:03 Lanny Marcus wrote:
> >> On 2/18/09, Anne Wilson  wrote:
> >>> On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
>  Anne Wilson wrote:
> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
> >> On Feb 17, 2009, at 10:52 AM, Anne Wilson wrote:
> >>> What am I missing?
> >>
> >> ask yum:
> >>
> >> 
> >>
> >>> Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just
> >>> leaves the terrible konqueror problem, and no-one seems to have any
> >>> ideas on that. :-(
> >>
> >> Anne: Glad you eliminated that problem! I'm curious as to why you are
> >> using the Konqueror web browser. The version that comes with CentOS is
> >> quite basic. I use Mozilla Firefox 99% of the time, but there have
> >> been a few times when I needed to use Konqueror, to get into a few web
> >> sites. Lanny
> >
> > I was trying to use Konqueror as a file manager :-)  The root konqueror
> > (and other users' konqueror) were all fine, but my ~/.kde got nuked
> > during extreme power problems in the village.  It's been  terrible fight
> > to get everything back and sorted, but I think this was the last problem.
> >
> > (Have you ever tried file management without back/forward, split window,
> > or any of the other tools?  It's murder!  You can descend a tree, but you
> > have to start again at the top to go anywhere else.)
> > .
> > Anne
>
> You always have Midnight Commander on the commandline.

To be honest, my mind was on getting the system back in order.  I never 
considered the possibility of adding new software packages.  The box in 
question is normally accessed only remotely, often for weeks at a time.  It 
doesn't have lots of applications installed.  Its function is file/print/imap 
server.  Now and then I work at that desktop for a few hours, but it's not 
frequent.

Anne


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[CentOS] Question about sub-domains

[Bo Lynch]

We currently have a web server that is running apache on cent 5.2.
We are upgrading our student info system so that it allows web access and
the vendor (powerschool) is stating that this has to be a registered
domain or a sub domain and only runs on Windows Server. My question is can
you tell apache to point a subdomain to a diiferent IP address. For
example, Our domain is currently amelia.k12.va.us. If someone goes to
powerschool.amelia.k12.va.us it points to another IP other than itself?
I have no experience with sub-domains so any input would be greatly
appreciated.
Thanks
-- 
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Ian Forde]

On Wed, 2009-02-18 at 08:13 -0800, dnk wrote:
> On 18-Feb-09, at 2:01 AM, John Doe wrote:
> 
> >>> For controller, what is the interface on your drives??  SCSI, SAS??
> >> Dell 2950, SAS 6 Host Bus Controller.
> >
> > Integrated SAS 6/i(base): 4 port SAS controller (does support RAID  
> > 0/1)
> > But I don't know if that is descent hw raid or crap raid...
> >
> > JD
> 
> This was kind of the reason I was thinking software raid.
> 
> Has anyone had any raid experience with this card?

Yep - it's real HW raid, though with a 2950, I would have gone for the
PERC instead.  The integrated SAS is usually a Fusion-MPT (LSI/Symbios)
card.  Do a 'lspci' to be sure.  I've got a few of these configured and
I can check the raid status with the mpt-status command (from the
mpt-status rpm).  Note that doing a 'fdisk -l' only yields one disk when
RAID is setup.  So yes - it's real HW raid.  Just not much in the way of
cache, which is why I prefer using PERCs instead...

-I

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Re: [CentOS] Gpg-agent will not start

[Scott Silva]

on 2-18-2009 11:30 AM Anne Wilson spake the following:
> On Wednesday 18 February 2009 18:50:03 Lanny Marcus wrote:
>> On 2/18/09, Anne Wilson 
>>  wrote:
>>> On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
 Anne Wilson wrote:
> On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
>> On Feb 17, 2009, at 10:52 AM, Anne Wilson wrote:
>>> What am I missing?
>> ask yum:
>> 
>>
>>> Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just
>>> leaves the terrible konqueror problem, and no-one seems to have any ideas
>>> on that. :-(
>> Anne: Glad you eliminated that problem! I'm curious as to why you are
>> using the Konqueror web browser. The version that comes with CentOS is
>> quite basic. I use Mozilla Firefox 99% of the time, but there have
>> been a few times when I needed to use Konqueror, to get into a few web
>> sites. Lanny
> 
> I was trying to use Konqueror as a file manager :-)  The root konqueror (and 
> other users' konqueror) were all fine, but my ~/.kde got nuked during extreme 
> power problems in the village.  It's been  terrible fight to get everything 
> back and sorted, but I think this was the last problem.
> 
> (Have you ever tried file management without back/forward, split window, or 
> any of the other tools?  It's murder!  You can descend a tree, but you have 
> to 
> start again at the top to go anywhere else.)
> .
> Anne
You always have Midnight Commander on the commandline.

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Re: [CentOS] Gpg-agent will not start

[Anne Wilson]

On Wednesday 18 February 2009 18:50:03 Lanny Marcus wrote:
> On 2/18/09, Anne Wilson  wrote:
> > On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
> >> Anne Wilson wrote:
> >> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
> >> >> On Feb 17, 2009, at 10:52 AM, Anne Wilson wrote:
> >> >>> What am I missing?
> >> >>
> >> >> ask yum:
>
> 
>
> > Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just
> > leaves the terrible konqueror problem, and no-one seems to have any ideas
> > on that. :-(
>
> Anne: Glad you eliminated that problem! I'm curious as to why you are
> using the Konqueror web browser. The version that comes with CentOS is
> quite basic. I use Mozilla Firefox 99% of the time, but there have
> been a few times when I needed to use Konqueror, to get into a few web
> sites. Lanny

I was trying to use Konqueror as a file manager :-)  The root konqueror (and 
other users' konqueror) were all fine, but my ~/.kde got nuked during extreme 
power problems in the village.  It's been  terrible fight to get everything 
back and sorted, but I think this was the last problem.

(Have you ever tried file management without back/forward, split window, or 
any of the other tools?  It's murder!  You can descend a tree, but you have to 
start again at the top to go anywhere else.)
.
Anne


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Ray Van Dolson]

On Wed, Feb 18, 2009 at 11:12:13AM -0800, John R Pierce wrote:
> Scott Silva wrote:
> > You can make LVM over raid 1's in Disk Druid, but I don't think it will do
> > raid 10. And you cannot boot from software raid 5 (yet).
> >   
> 
> a LVM over several raid 1's is effectively raid10 as LVM will stripe the 
> volumes across the devices.   It would be nice if  LVM could do 
> mirorring too (like LVM on AIX does) and was tighter integrated with the 
> file system tools (again, like LVM on AIX...  grow a LV and it grows the 
> JFS thats sitting on it, transparently and online).
> 

Can't Linux LVM do mirroring?  I swear I read that it could in the man
page.  Never have tried it however and you certainly can't set it up
from disk druid in anaconda.

Ray
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a

[Jerry Franz]

Benjamin Franz wrote:

> Make a RAID5 as follows for a LVM partition using the rest of your 
> available space as follows (just under 1500 Mbytes):

Sorry. Typo. Just under 1500 Gbytes.

-- 
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Re: [CentOS] fotran 77 with amd64 technology

[John R Pierce]

Pavel Ritto wrote:
> What is the right way to compile a fortran 77 file using the amd64 
> bits technology? If I write f77 -m64 -march=opteron file.f and then 
> run a.out, the time of execution is so slow as if it I  had´nt called 
> to 64bits option. what is happening?
>  
>
>

I thought the Gnu Fortran compiler was called g77 ? ... oh, I see, f77 
is a link to g77.   yes, -m64 should generate x86_64 code...I dunno 
what -march=opteron does.

otherwise, insufficient information to diagnose your problem.   was this 
fortran program written for GCC F77 ?   is it slow because its CPU bound 
or is it slow because its swapping?



(note, btw, I haven't actually touched fortran since the 1970s)

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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup

[Jerry Franz]

dnk wrote:
> Hi there,
> 
> I am currently setting up a server that will house my backups (simply  
> using rsync).
> 
> This system has 4 X 500 gb drives and I am looking to raid for max  
> drive space and data safety. Performance is not so much a concern.
> 
> My experience with software raids in nil, so some of these may seem  
> like pretty dumb questions.
> 
> I was thinking a raid 1 is probably sufficient.
> 
> Would it be best to raid 1 two drives each and LVM them together?

The configuration you want is a hybrid of RAID1 and RAID5. The RAID1 is 
because GRUB doesn't grok RAID5, but is OK with just your /boot 
partition in RAID1.

Make a RAID1 for your /boot partition as follows:

/dev/md0 - /dev/sda1, /dev/sdb1, /dev/sdc1 (S), /dev/sdd1 (S) (100 Mbytes)


Make a RAID5 as follows for a LVM partition using the rest of your 
available space as follows (just under 1500 Mbytes):

/dev/md1 - /dev/sda2, /dev/sdb2, /dev/sdc2, /dev/sdd2

Create a LVM partition on /dev/md1 and carve out your / and swap 
partitions from it.

> My next question would be about how to do this as I have never done a  
> linux software raid.

-- 
Benjamin Franz

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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Scott Silva]

on 2-18-2009 11:12 AM John R Pierce spake the following:
> Scott Silva wrote:
>> You can make LVM over raid 1's in Disk Druid, but I don't think it will do
>> raid 10. And you cannot boot from software raid 5 (yet).
>>   
> 
> a LVM over several raid 1's is effectively raid10 as LVM will stripe the 
> volumes across the devices.   It would be nice if  LVM could do 
> mirorring too (like LVM on AIX does) and was tighter integrated with the 
> file system tools (again, like LVM on AIX...  grow a LV and it grows the 
> JFS thats sitting on it, transparently and online).
Effectively and actually are two different things. Some people seem to be very
shy of LVM, even though it seems to be fairly mature technology. I didn't
think the LVM will stripe over the raid 1's by itself, I thought you had to
set stripes according to the underlying raid structure to get optimum speed.


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Re: [CentOS] realtime backup

[John R Pierce]

CentOS List wrote:
> Hi,
>
> I had a cfml application running on mysql database. Can some suggest a
> realtime backup solution via ftp say every 5mins without damaging the
> database?
>   


do your backups have to have some level of history ?   or just one 
backup as of the last snapshot interval such that any bad data is 
replicated too?


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[John R Pierce]

Scott Silva wrote:
> You can make LVM over raid 1's in Disk Druid, but I don't think it will do
> raid 10. And you cannot boot from software raid 5 (yet).
>   

a LVM over several raid 1's is effectively raid10 as LVM will stripe the 
volumes across the devices.   It would be nice if  LVM could do 
mirorring too (like LVM on AIX does) and was tighter integrated with the 
file system tools (again, like LVM on AIX...  grow a LV and it grows the 
JFS thats sitting on it, transparently and online).


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[CentOS] Is the NFS lockd bug fixed ? (update)

[Alain Terriault]

removing all my centos+ kernels and using kmod on top of redhat kernels 
fix my nfs lock problem.
thanks,
alain

Akemi Yagi wrote:
> On Tue, Feb 17, 2009 at 7:57 AM, Filipe Brandenburger
>  wrote:
>   
>> Hi,
>>
>> On Tue, Feb 17, 2009 at 10:44, Alain Terriault  
>> wrote:
>> 
>>> I am runing x86_64 versions of "kernel-2.6.18-92.1.22.el5.centos.plus" (
>>> i need XFS)
>>>   
>> You no longer need CentOS Plus kernel for XFS.
>>
>> See:
>> http://wiki.centos.org/AdditionalResources/Repositories/CentOSPlus#line-76
>> 
>
> And even this info is becoming obsolete.  The current kmod-xfs package
> (in CentOS-5) is kABI-tracking, that is, it is independent of the
> kernel version.
>
> Akemi
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>   


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Scott Silva]

on 2-18-2009 10:13 AM dnk spake the following:
> 
> On 18-Feb-09, at 9:14 AM, Scott Silva wrote:
> 
>> http://tldp.org/HOWTO/Software-RAID-HOWTO.html
>>
>> http://www.linuxdevcenter.com/pub/a/linux/2002/12/05/RAID.html
> 
> If i am to understand the tutorials right, does one create the raid/lvm
> after install? Or do you boot off the disk, use these tools, then
> install on existing structures. I was trying to do it through the disk
> druid during install.
> 
> d
> 
> 
> 
> 
> 
> 
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You can make LVM over raid 1's in Disk Druid, but I don't think it will do
raid 10. And you cannot boot from software raid 5 (yet).


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Re: [CentOS] Gpg-agent will not start

[Lanny Marcus]

On 2/18/09, Anne Wilson  wrote:
> On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
>> Anne Wilson wrote:
>> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
>> >> On Feb 17, 2009, at 10:52 AM, Anne Wilson wrote:
>> >>> What am I missing?
>> >>
>> >> ask yum:

> Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just leaves
> the terrible konqueror problem, and no-one seems to have any ideas on
> that. :-(

Anne: Glad you eliminated that problem! I'm curious as to why you are
using the Konqueror web browser. The version that comes with CentOS is
quite basic. I use Mozilla Firefox 99% of the time, but there have
been a few times when I needed to use Konqueror, to get into a few web
sites. Lanny
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[CentOS] fotran 77 with amd64 technology

[Pavel Ritto]

What is the right way to compile a fortran 77 file using the amd64 bits 
technology? If I write f77 -m64 -march=opteron file.f and then run a.out, the 
time of execution is so slow as if it I  had´nt called to 64bits option. what 
is happening?
 


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[dnk]

On 18-Feb-09, at 9:14 AM, Scott Silva wrote:


http://tldp.org/HOWTO/Software-RAID-HOWTO.html

http://www.linuxdevcenter.com/pub/a/linux/2002/12/05/RAID.html


If i am to understand the tutorials right, does one create the raid/ 
lvm after install? Or do you boot off the disk, use these tools, then  
install on existing structures. I was trying to do it through the disk  
druid during install.


d



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[CentOS] USB Memory Key not recognized

[James B. Byrne]

Intel DQ35JO MB
CentOS-5.3 2.6.18-92.1.22.el5xen
x86_64

I have a USB meory key (Kingston) that I formally used with a
CentOS-5.2 (32bit) system.  When I plug it into a connector slot the
light on the key comes on but there are no entries created in /media
and no entries made to the /var/log/messages file.

I have a usb mouse and keyboard attached to the same system. Both
work fine.

Is there a problem because I am running xen?  Is this related to the
host being a 64 bit system?  Is there something else that I should
do to enable this devices?


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Scott Silva]

on 2-17-2009 1:52 PM dnk spake the following:
> Hi there,
> 
> I am currently setting up a server that will house my backups (simply  
> using rsync).
> 
> This system has 4 X 500 gb drives and I am looking to raid for max  
> drive space and data safety. Performance is not so much a concern.

Max size would be raid 5, max safety would be raid 10 or lvm over raid 1's
> 
> My experience with software raids in nil, so some of these may seem  
> like pretty dumb questions.
> 
> I was thinking a raid 1 is probably sufficient.
> 
> Would it be best to raid 1 two drives each and LVM them together?
> 
> My next question would be about how to do this as I have never done a  
> linux software raid.
http://tldp.org/HOWTO/Software-RAID-HOWTO.html

http://www.linuxdevcenter.com/pub/a/linux/2002/12/05/RAID.html


> 
> D


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Re: [CentOS] CentOS 5.2 and SATA HotSwap

[Julio Rodanes - KNET]

Yes, AHCI is configured en BIOS.

uname -a
2.6.18-92.el5PAE #1 SMP Tue Jun 10 19:22:41 EDT 2008 i686 i686 i386 GNU/Linux

lsmod

Module  Size  Used by
autofs424389  2
hidp   23105  2
rfcomm 42457  0
l2cap  29505  10 hidp,rfcomm
bluetooth  53797  5 hidp,rfcomm,l2cap
sunrpc144893  1
ipt_REJECT  9537  0
ip6t_REJECT 9409  0
xt_tcpudp   7105  0
x_tables   17349  3 ipt_REJECT,ip6t_REJECT,xt_tcpudp
ipv6  258273  23 ip6t_REJECT
xfrm_nalgo 13765  1 ipv6
crypto_api 11969  1 xfrm_nalgo
cpufreq_ondemand   12493  4
dm_mirror  29253  0
dm_multipath   22089  0
dm_mod 61661  2 dm_mirror,dm_multipath
video  21193  0
sbs18533  0
backlight  10049  1 video
i2c_ec  9025  1 sbs
button 10705  0
battery13637  0
asus_acpi  19289  0
ac  9157  0
lp 15849  0
parport_pc 29157  1
i2c_i801   11597  0
parport37513  2 lp,parport_pc
i2c_core   23745  2 i2c_ec,i2c_i801
e1000e 92929  0
serio_raw  10693  0
floppy 57125  0
pcspkr  7105  0
sg 36060  0
ahci   30149  8
libata144125  1 ahci
sd_mod 24897  10
scsi_mod  134605  3 sg,libata,sd_mod
raid1  25153  3
ext3  123593  3
jbd56553  1 ext3
uhci_hcd   25549  0
ohci_hcd   23389  0
ehci_hcd   33613  0

lspci -v

00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port 
SATA AHCI Controller (rev 02) (prog-if 01 [AHCI 1.0])
Subsystem: Super Micro Computer Inc Unknown device d180
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 58
I/O ports at 1c50 [size=8]
I/O ports at 1c44 [size=4]
I/O ports at 1c48 [size=8]
I/O ports at 1c40 [size=4]
I/O ports at 18e0 [size=32]
Memory at d8601000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/4 
Enable+
Capabilities: [70] Power Management version 3
Capabilities: [a8] #12 [0010]
Capabilities: [b0] #13 [0306]


Julio Rodanés Martinez
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De: centos-boun...@centos.org [mailto:centos-boun...@centos.org] En nombre de 
Laurent Wandrebeck
Enviado el: miércoles, 18 de febrero de 2009 17:29
Para: CentOS mailing list
Asunto: Re: [CentOS] CentOS 5.2 and SATA HotSwap

2009/2/18 Julio Rodanes - KNET :
> Hello, I have a server  Supermicro 5015B-MT with ICH9R chipset, disk SATAII
> and Centos  5.2
>
> I have read that the AHCI module allows hotplug but when I add a hot new
> SATA disk, the system don't detects it .
>
> Any idea of what the problem is?
Is your sata controller configured as ahci in bios ?
You can check lsmod output to see which modules are loaded.
Laurent
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Re: [CentOS] Lost konqueror navigation toolbars

[Anne Wilson]

On Wednesday 18 February 2009 15:52, Steve Huff wrote:
> On Feb 18, 2009, at 9:38 AM, Anne Wilson wrote:
> > If I knew what provides these I could copy them from another
> > account.  Can
> > anyone help, please?  Do you know what causes a toolbar to be
> > displayed?  All
> > the toolbars are visible in other users' konqueror, so I don't think
> > anything
> > vital is lost.
>
> i do not know where specifically in the KDE config toolbar settings
> are stored.
>
> have you made extensive customizations to your KDE desktop?  if not
> (and even if you have) the easiest route for you may be something like
> the following:
>
> % cd ~
> % rm -rf .kde-backup && mv .kde .kde-backup
> % cp -a /etc/skel/.kde .kde
>
> then log out and log back in, choosing the default KDE session.  KDE
> should detect a brand new ~/.kde and populate it accordingly (take a
> look at /usr/share/xsessions/kde.desktop if you're interested in
> seeing what it's going to do).
>
> at this point i would expect you to see a functional KDE desktop with
> the default config.  you can then proceed to configure your desktop as
> you see fit.  if you want to see what is different between the stock
> config and your config, start with `diff -br --brief .kde .kde-backup`
> and go from there.
>
After the hours I've spent diffing files, trying to find the problem, you are 
quite right that the obvious solution is to start from a clean .kde.  I have 
a working konqueror, now, thanks.  All that's left is to see which files need 
copying back from the old .kde.  I suspect that I  could copy them en masse 
as long as I missed the konqueror files, but I won't :-)

Anne
>
> --
> If this were played upon a stage now, I could condemn it as an
> improbable fiction. - Fabian, Twelfth Night, III,v


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Re: [CentOS] CentOS 5.2 and SATA HotSwap

[Laurent Wandrebeck]

2009/2/18 Julio Rodanes - KNET :
> Hello, I have a server  Supermicro 5015B-MT with ICH9R chipset, disk SATAII
> and Centos  5.2
>
> I have read that the AHCI module allows hotplug but when I add a hot new
> SATA disk, the system don't detects it .
>
> Any idea of what the problem is?
Is your sata controller configured as ahci in bios ?
You can check lsmod output to see which modules are loaded.
Laurent
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[dnk]

On 18-Feb-09, at 8:17 AM, Ray Van Dolson wrote:

> So this isn't the PERC then?  The PERC should be real hardware RAID...
>
> Ray

It is the SAS 6/i.

d


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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[Ray Van Dolson]

On Wed, Feb 18, 2009 at 08:13:23AM -0800, dnk wrote:
> 
> On 18-Feb-09, at 2:01 AM, John Doe wrote:
> 
> >>> For controller, what is the interface on your drives??  SCSI, SAS??
> >> Dell 2950, SAS 6 Host Bus Controller.
> >
> > Integrated SAS 6/i(base): 4 port SAS controller (does support RAID  
> > 0/1)
> > But I don't know if that is descent hw raid or crap raid...
> >
> > JD
> 
> This was kind of the reason I was thinking software raid.
> 
> Has anyone had any raid experience with this card?
> 
> d

So this isn't the PERC then?  The PERC should be real hardware RAID...

Ray
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[dnk]

On 18-Feb-09, at 2:01 AM, John Doe wrote:

>>> For controller, what is the interface on your drives??  SCSI, SAS??
>> Dell 2950, SAS 6 Host Bus Controller.
>
> Integrated SAS 6/i(base): 4 port SAS controller (does support RAID  
> 0/1)
> But I don't know if that is descent hw raid or crap raid...
>
> JD

This was kind of the reason I was thinking software raid.

Has anyone had any raid experience with this card?

d





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Re: [CentOS] realtime backup

[nate]

CentOS List wrote:
> Hi,
>
> I had a cfml application running on mysql database. Can some suggest a
> realtime backup solution via ftp say every 5mins without damaging the
> database?

Using ftp every 5 minutes implies a pretty small database, like others
have suggested I would suggest setting up a slave DB, and run
mysqldump against it as often as you need and ftp the results to
the remote host.

nate

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[CentOS] realtime backup

[R P Herrold]

On Wed, 18 Feb 2009, Robert Heller wrote:

>> How big and what engine is the db to be secured?

>>> every 5mins

>> Backing up that often doesn't make sense to me. If you need to have it
>> that frequently you better go for a slave or write to two backends.

I have to wonder when I see these kind of 'wierd' requirements:

Who is the dummy here? -- the person who did not 
specify AMQ journalling to a very well protected unit, or the 
admin who does not step back a bit, and point out the 
defective design?

-- Russ herrold
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[CentOS] CentOS 5.2 and SATA HotSwap

[Julio Rodanes - KNET]

Hello, I have a server  Supermicro 5015B-MT with ICH9R chipset, disk SATAII and 
Centos  5.2
I have read that the AHCI module allows hotplug but when I add a hot new SATA 
disk, the system don't detects it .

Any idea of what the problem is?

Thanks.

Julio Rodan?s Martinez
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Re: [CentOS] Lost konqueror navigation toolbars

[Steve Huff]

On Feb 18, 2009, at 9:38 AM, Anne Wilson wrote:

If I knew what provides these I could copy them from another  
account.  Can
anyone help, please?  Do you know what causes a toolbar to be  
displayed?  All
the toolbars are visible in other users' konqueror, so I don't think  
anything

vital is lost.



i do not know where specifically in the KDE config toolbar settings  
are stored.


have you made extensive customizations to your KDE desktop?  if not  
(and even if you have) the easiest route for you may be something like  
the following:


% cd ~
% rm -rf .kde-backup && mv .kde .kde-backup
% cp -a /etc/skel/.kde .kde

then log out and log back in, choosing the default KDE session.  KDE  
should detect a brand new ~/.kde and populate it accordingly (take a  
look at /usr/share/xsessions/kde.desktop if you're interested in  
seeing what it's going to do).


at this point i would expect you to see a functional KDE desktop with  
the default config.  you can then proceed to configure your desktop as  
you see fit.  if you want to see what is different between the stock  
config and your config, start with `diff -br --brief .kde .kde-backup`  
and go from there.


-steve

--
If this were played upon a stage now, I could condemn it as an  
improbable fiction. - Fabian, Twelfth Night, III,v






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[CentOS] Lost konqueror navigation toolbars

[Anne Wilson]

Re-sending, in the hope that someone has a brainwave.

I still have some outstanding problems caused by the recent power problems.  
All my ~/.kde ended up in lost+found, identified by numbered folders.  I've 
gradually managed to trace the origin of all the files and returned them to 
their correct place.  However a few may have been lost, as there are  no 
files left and I still have some problems.  I'll post them in separate 
threads.

When I launch konqueror as user I have no Main or Location toolbar.  Also, my 
menu options are Settings, Help, Edit, View and Tools, in that order.  
Location, Go, Bookmarks and Window are missing.

If I knew what provides these I could copy them from another account.  Can 
anyone help, please?  Do you know what causes a toolbar to be displayed?  All 
the toolbars are visible in other users' konqueror, so I don't think anything 
vital is lost.

Anne
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Re: [CentOS] realtime backup

[Brian Mathis]

On Wed, Feb 18, 2009 at 8:58 AM, Robert Heller  wrote:
> At Wed, 18 Feb 2009 14:31:18 +0100 CentOS mailing list  
> wrote:
>>
>> CentOS List wrote on Wed, 18 Feb 2009 14:30:16 +0800:
>>
>> > every 5mins
>>
>> How big and what engine is the db to be secured?
>> Backing up that often doesn't make sense to me. If you need to have it
>> that frequently you better go for a slave or write to two backends.
>
> Or just use a RAID array (eg software RAID in mirror mode: RAID1).
>

RAID IS NOT BACKUP
RAID IS NOT BACKUP
RAID IS NOT BACKUP

To the OP:
It would be helpful if you were more descriptive about what you are
trying to accomplish.  Are you worried about disk failures?  Are you
worried about the whole system failing?  What about the case where
invalid data is added to the database? (or the database gets corrupted
in general?)  Do you want to have a hot backup of the database
standing by so you can switch to it if the main one goes down?  Each
of these have different solutions.
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Re: [CentOS] Gpg-agent will not start

[Anne Wilson]

On Tuesday 17 February 2009 20:44, Phil Schaffner wrote:
> Anne Wilson wrote:
> > On Tuesday 17 February 2009 16:25:07 Steve Huff wrote:
> >> On Feb 17, 2009, at 10:52 AM, Anne Wilson wrote:
> >>> What am I missing?
> >>
> >> ask yum:
> >>
> >> [sh...@srdce ~]$ yum provides /usr/bin/gpg-agent
> >> ...
> >> gnupg2.i386 : Utility for secure communication and data storage
> >
> > yum install gnupg2
> > Loading "fastestmirror" plugin
> > Loading mirror speeds from cached hostfile
> >  * adobe-linux-i386: linuxdownload.adobe.com
> >  * kbs-CentOS-Extras: centos.karan.org
> >  * rpmforge: www.mirrorservice.org
> >  * base: mirrors.dedipower.com
> >  * updates: mirrors.dedipower.com
> >  * addons: mirrors.dedipower.com
> >  * extras: mirrors.dedipower.com
> > Setting up Install Process
> > Parsing package install arguments
> > No package gnupg2 available.
> > Nothing to do
>
> As Rex Dieter said earlier - "EPEL"...
>
> [r...@wx1 ~]# yum info gnupg2
> Loading "priorities" plugin
> Loading "changelog" plugin
> Loading "downloadonly" plugin
> Loading "skip-broken" plugin
> Loading "fastestmirror" plugin
> Loading mirror speeds from cached hostfile
>   * epel: mirror.umoss.org
>   * rpmforge: rh-mirror.linux.iastate.edu
>   * extras: CentOS
>   * local: CentOS
>   * updates: CentOS
>   * base: CentOS
>   * centosplus: CentOS
>   * addons: CentOS
> Excluding Packages from Red Hat Enterprise 5 - RPMforge.net - dag
> Finished
> Excluding Packages from CentOS-5 - Plus
> Finished
> 7252 packages excluded due to repository priority protections
> Available Packages
> Name   : gnupg2
> Arch   : i386
> Version: 2.0.8
> Release: 1.el5
> Size   : 2.4 M
> Repo   : epel
> Summary: Utility for secure communication and data storage
> Description:
> GnuPG is GNU's tool for secure communication and data storage.  It can
> be used to encrypt data and to create digital signatures.  It includes
> an advanced key management facility and is compliant with the proposed
> OpenPGP Internet standard as described in RFC2440 and the S/MIME
> standard as described by several RFCs.
>
> GnuPG 2.0 is the stable version of GnuPG integrating support for
> OpenPGP and S/MIME.  It does not conflict with an installed 1.x
> OpenPGP-only version.
>
> GnuPG 2.0 is a newer version of GnuPG with additional support for
> S/MIME.  It has a different design philosophy that splits
> functionality up into several modules.  Both versions may be installed
> simultaneously without any conflict (gpg is called gpg2 in GnuPG 2).
> In fact, the gpg version from GnuPG 1.x is able to make use of the
> gpg-agent as included in GnuPG 2 and allows for seamless passphrase
> caching.  The advantage of GnupG 1.x is its smaller size and no
> dependency on other modules at run and build time.
>
Thanks, Phil and Rex.  Everything's absolutely fine, now.  That just leaves 
the terrible konqueror problem, and no-one seems to have any ideas on 
that. :-(

Anne
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Re: [CentOS] realtime backup

[Robert Heller]

At Wed, 18 Feb 2009 14:31:18 +0100 CentOS mailing list  
wrote:

> 
> CentOS List wrote on Wed, 18 Feb 2009 14:30:16 +0800:
> 
> > every 5mins
> 
> How big and what engine is the db to be secured?
> Backing up that often doesn't make sense to me. If you need to have it 
> that frequently you better go for a slave or write to two backends.

Or just use a RAID array (eg software RAID in mirror mode: RAID1).

> 
> Kai
> 

-- 
Robert Heller -- 978-544-6933
Deepwoods Software-- Download the Model Railroad System
http://www.deepsoft.com/  -- Binaries for Linux and MS-Windows
hel...@deepsoft.com   -- http://www.deepsoft.com/ModelRailroadSystem/
   
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Re: [CentOS] realtime backup

[Kai Schaetzl]

CentOS List wrote on Wed, 18 Feb 2009 14:30:16 +0800:

> every 5mins

How big and what engine is the db to be secured?
Backing up that often doesn't make sense to me. If you need to have it 
that frequently you better go for a slave or write to two backends.

Kai

-- 
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Get your web at Conactive Internet Services: http://www.conactive.com



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Re: [CentOS] realtime backup

[Fabian Arrotin]

CentOS List wrote:
> Hi,
> 
> I had a cfml application running on mysql database. Can some suggest a
> realtime backup solution via ftp say every 5mins without damaging the
> database?
> 
> Thanks
> 
> regards
> 

Sorry but i see two conflicting ideas in the same sentence : 'realtime' 
and 'every 5 mins' .. ;-)
Why not using a MySQL replication (Master/Slave) between the two nodes ?
And if you don't feel confident about configuring that, why just not 
using Drbd between those two nodes ? realtime replication , whatever 
runs on top of the filesystem (DB, files, Mailboxes, etc ...)

-- 
--
Fabian Arrotin
  idea=`grep -i clue /dev/brain` ; test -z "$idea" && echo "sorry, init 
6 in progress" || sh ./answer.sh
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Re: [CentOS] question on hwclock

[Jerry Geis]

>
> On Tue, Feb 17, 2009 at 6:08 PM, Jerry Geis  > wrote:
> >/ I am trying to hwclock to set the time. (hwclock -w)
> />/ this is what I get on standard 5.2 x86_64.
> />/
> />/  hwclock --debug
> />/ hwclock from util-linux-2.13-pre7
> />/ hwclock: Open of /dev/rtc failed, errno=19: No such device.
> />/ No usable clock interface found.
> />/ Cannot access the Hardware Clock via any known method.
> />/ [root at devcentos5x64  
> src]# ls -l /dev/rtc
> />/ crw--- 1 root root 10, 135 Feb  6 13:32 /dev/rtc
> />/
> />/ Any thoughts?
> />/
> /
> You have to be root or use su/sudo to do this.
>
> HTH
>
> mhr
>   
I was root when I executed the command.

Jerry
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Re: [CentOS] chkconfig path

[Kai Schaetzl]

Geert Batsleer wrote on Wed, 18 Feb 2009 10:49:53 +0100:

> these are lines 133 till 147

The error mentions line 440, not 140. Is this the only chkconfig line in 
it?

> * Setting up and starting MySql../lib/redhat/functions.sh: line 440:
> chkconfig: command not found

Also, that seems to be related to MySQL?
I think the error is misleading. I doubt it cannot find chkconfig. It 
can't find something else. You can just replace all chkconfig with 
"/sbin/chkconfig" to prove this.

Kai

-- 
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Re: [CentOS] realtime backup

[Linux Advocate]

- Original Message 
> From: John Doe 
> To: CentOS mailing list 
> Sent: Wednesday, February 18, 2009 5:40:48 PM
> Subject: Re: [CentOS] realtime backup
> 
> 
> From: CentOS List 
> > I had a cfml application running on mysql database. Can some suggest a
> > realtime backup solution via ftp say every 5mins without damaging the
> > database?
> 
> 
> Wouldn't a simple mysqldump work?
> http://dev.mysql.com/doc/refman/5.0/en/mysqldump.html
> 
> JD


not if there are innodb tables? 


  
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Re: [CentOS] 4 X 500 gb drives - best software raid config for a backup server?

[John Doe]

> > For controller, what is the interface on your drives??  SCSI, SAS??
> Dell 2950, SAS 6 Host Bus Controller.

Integrated SAS 6/i(base): 4 port SAS controller (does support RAID 0/1)
But I don't know if that is descent hw raid or crap raid...

JD


  

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Re: [CentOS] GFS + Restarting iptables

[Sven Kaptein | MARS websolutions]

 Dear List,

 I have one last little problem with setting up an cluster. My gfs  
 Mount will hang as soon as I do an iptables restart on one of the  
 nodes..
>> 
>>> Undoubtedly someone else with more experience with GFS will give you an
>>> answer, but to me this makes me think ip_conntrack stuff gets cleared
>>> out and sessions have to reestablish themselves.
>>>
>>> Ray
>> 
>> Ray,
>> 
>> Thanks for your fast answer and getting me into the right direction. This
>> sounds like a possible solution, but I have no clue how to fix it. I
googled
>> already a lot on ip_conntrack + gfs, but don't see a possible solution
>> coming up.
>> 
>> Can someone/you please help me a little bit more with the issue?
>> 
>> Thanks a lot!
>> Sven
> Are your GFS mounts and your cluster on different sides of the firewall?
>
> Maybe you can do something simple like a tunnel between the clusters and
the
> mounts. Should be easier and safer than punching holes in the firewall. Or
put
> a separate subnet or vlan just for the GFS traffic.
Uhm... I have the cluster running on a different vlan then my ISCSI traffic.
Is that a problem? I would not like to put my cluster communication on the
other vlan since thats iscsi dedicated now.

I have now figured out that it isn't the restarting IP tables causing the
trouble, but the issue is as follows:

- Calling Group_tool dump
This will cause groupd to run at 100% cpu. Dooing a strace on this process
tells me its dooing some poll in an infinite loop:
poll([{fd=1, events=POLLIN}, {fd=2, events=POLLIN}, {fd=7, events=POLLIN},
{fd=8, events=POLLIN}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN},
{fd=12, events=POLLIN}, {fd=14, events=POLLIN}, {fd=18, events=POLLIN},
{fd=17, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN,
revents=POLLNVAL}, {fd=-1}], 13, -1) = 1

- Calling Group_tool dump gfs
This will cause gfs_controld to run at 100% cpu. Exactly the same as the
groupd (strace):
poll([{fd=2, events=POLLIN}, {fd=3, events=POLLIN}, {fd=6, events=POLLIN},
{fd=7, events=POLLIN}, {fd=8, events=POLLIN}, {fd=11, events=POLLIN},
{fd=12, events=POLLIN, revents=POLLNVAL}, {fd=12, events=POLLIN,
revents=POLLNVAL}], 8, -1) = 2

Sometimes my Mount will hang, but sometimes it will just continue normally.
I can imagine this has to do with the amount of data going to the gfs Mount.

So I guess it isn't really an iptables problem.. But im trying to debug that
a little bit more as well..

Any clues?

Thanks!!
Sven



 

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Re: [CentOS] question on hwclock

[MHR]

On Tue, Feb 17, 2009 at 6:08 PM, Jerry Geis  wrote:
> I am trying to hwclock to set the time. (hwclock -w)
> this is what I get on standard 5.2 x86_64.
>
>  hwclock --debug
> hwclock from util-linux-2.13-pre7
> hwclock: Open of /dev/rtc failed, errno=19: No such device.
> No usable clock interface found.
> Cannot access the Hardware Clock via any known method.
> [r...@devcentos5x64 src]# ls -l /dev/rtc
> crw--- 1 root root 10, 135 Feb  6 13:32 /dev/rtc
>
> Any thoughts?
>

You have to be root or use su/sudo to do this.

HTH

mhr
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Re: [CentOS] chkconfig path

[Geert Batsleer]

2009/2/18 Kai Schaetzl 

> Geert Batsleer wrote on Tue, 17 Feb 2009 23:25:42 +0100:
>
> > I run the (redhat specific install)
> > script as root.
>
> what exactly does it have at that line 440?
>
> Kai


Hi Kai,

these are lines 133 till 147

-
userlist_enable=NO
tcp_wrappers=YES" > "$ftpconfig";

chkconfig vsftpd on;
service vsftpd restart >/dev/null 2>&1;
service vsftpd status  >/dev/null 2>&1;
if [ "$?" != "0" ]
then
echo "...Failed!";
exit 1;
else
echo "...OK";
-

Regards, Geert
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Re: [CentOS] realtime backup

[John Doe]

From: CentOS List 
> I had a cfml application running on mysql database. Can some suggest a
> realtime backup solution via ftp say every 5mins without damaging the
> database?


Wouldn't a simple mysqldump work?
http://dev.mysql.com/doc/refman/5.0/en/mysqldump.html

JD


  

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