Re: [CentOS-docs] Acer laptops (and the snd_hda_intel module
On Sun, Aug 10, 2008 at 09:19:47AM +0200, Fabian Arrotin wrote: Scott Robbins wrote: Just a note for anyone doing a page on Acer laptops. I had put in my own page, and notice that someone had put in theirs as well, that though the module loads, sound doesn't work. It turns out that one can get sound working by downloading the latest alsa drivers. I've added a note to my page on the 4720z. The issue seems to be that CentOS uses an older version of alsa. Are you sure the provided alsa/snd-hda-intel module doesn't work with your hardware ? Yes, I am quite sure. I am aware of the trick of specifying the model in modprobe.conf (or modprobe.d/alsa-base) but it didn't work in this case. The nice thing is that with these newer drivers, that model=acer line is not required for sound to work. Maybe adding a link/note on the wiki about all the parameters that this module accepts is worth writing : all the paramaters are in the file /usr/share/doc/kernel-doc-2.6.18/Documentation/sound/alsa/ALSA-Configuration.txt (package kernel-doc) I do have a link to my page, where I mention the model=acer trick. I think that's a great idea to add mention of possible parameters, but should probably be in a separate page about sound. (I don't feel capable of writing such a page--my sound needs are pretty basic, and I'm no expert on it. Something with a link, as well as telling the reader how to apply these parameters, for example, in /etc/modprobe.conf, would certainly be useful, however.) -- Scott Robbins PGP keyID EB3467D6 ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 ) gpg --keyserver pgp.mit.edu --recv-keys EB3467D6 Cordelia: You're just a souless bloodsucking demon. They're LAWYERS ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
[CentOS-announce] CEBA-2008:0824 CentOS 5 i386 strace Update
CentOS Errata and Bugfix Advisory 2008:0824
Upstream details at : https://rhn.redhat.com/errata/RHBA-2008-0824.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( md5sum Filename )
i386:
dba0f8d0a2aca6aca15bd81d63a0b295 strace-4.5.16-1.el5_2.2.i386.rpm
Source:
4f46275678d5a11a8d8ceacd3d9c241a strace-4.5.16-1.el5_2.2.src.rpm
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[CentOS-announce] CEBA-2008:0824 CentOS 5 x86_64 strace Update
CentOS Errata and Bugfix Advisory 2008:0824
Upstream details at : https://rhn.redhat.com/errata/RHBA-2008-0824.html
The following updated files have been uploaded and are currently
syncing to the mirrors: ( md5sum Filename )
x86_64:
288c7979157a76555734c4dd532803cf strace-4.5.16-1.el5_2.2.x86_64.rpm
Source:
4f46275678d5a11a8d8ceacd3d9c241a strace-4.5.16-1.el5_2.2.src.rpm
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Re: [CentOS-es] leer la cola de correo postfix
Hola Victor: Tengo el postfix corriendo en la máquina y me gustaría poder leer los mensajes que están pendientes en la cola pero que tenga formato. Quiero decir, cuando lo abro con mi editor normal, sale todo sin formato alguno y es dificil para mi seguir la pista... Prueba instalando pfqueue. Saludos Osvaldo ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
[CentOS] can't access irc server on xen domU, please help
Hi all, I'm running a CentOS 5.2 server with a FC8 xen domU guest, and an irc server on the FC8 domU guest. For some odd reason, I can't access the irc server on the xen domU guest. From FC8, when I run netstat -a, I can see irc is listening: netstat -a Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp0 0 *:ircd *:* LISTEN tcp0 0 *:6668 *:* LISTEN tcp0 0 *:6669 *:* LISTEN tcp0 0 *:ftp *:* LISTEN tcp0 0 192.168.10.:afs3-fileserver *:* LISTEN tcp0 0 localhost.localdomain:smtp *:* LISTEN tcp0 0 192.168.10.13:ftp 196-209-84-62-tpr-esr:49615 ESTABLISHED tcp0 0 *:http *:* LISTEN tcp0 0 *:ssh *:* LISTEN and running nmap on the localhost looks promising as well: netstat -a Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp0 0 *:ircd *:* LISTEN tcp0 0 *:6668 *:* LISTEN tcp0 0 *:6669 *:* LISTEN tcp0 0 *:ftp *:* LISTEN tcp0 0 196.34.136.:afs3-fileserver *:* LISTEN tcp0 0 localhost.localdomain:smtp *:* LISTEN tcp0 0 196.34.136.55:ftp 196-209-84-62-tpr-esr:49615 ESTABLISHED tcp0 0 *:http *:* LISTEN tcp0 0 *:ssh *:* LISTEN Yet, from the outside (either from another PC, or the dom0 itself), I can't connect to the irc ports. I've even disabled iptables on the dom0 altogether, but stil can't connect to it. The only open ports are: PORT STATE SERVICE 80/tcp open http 443/tcp closed https 7001/tcp closed afs3-callback 8000/tcp closed http-alt 8080/tcp closed http-proxy 8081/tcp closed blackice-icecap How do I get this to work? P.S. Sorry for the cross-post, for those of you who are on the centos-virt list as well, I just find that this list is being used more. -- Kind Regards Rudi Ahlers ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
On 8/10/08, Kai Schaetzl [EMAIL PROTECTED] wrote: Rudi Ahlers wrote on Sun, 10 Aug 2008 08:41:55 +0200: The only open ports are: PORT STATE SERVICE 80/tcp open http 443/tcp closed https 7001/tcp closed afs3-callback 8000/tcp closed http-alt 8080/tcp closed http-proxy 8081/tcp closed blackice-icecap Compare that with your lists above. It doesn't fit at all, e.g. there is no https on your other lists. Looks very much like a dns or IP address problem - the latter test is not against the same target although you think it is. Kai -- Hi Kai, I have noticed that as well, but don't quite know what todo with it. Running nmap against the VPS, from my home PC, I get the following: Not shown: 1661 filtered ports PORT STATE SERVICE 21/tcp closed ftp 22/tcp open ssh 25/tcp closed smtp 53/tcp closed domain 80/tcp open http 110/tcp closed pop3 143/tcp closed imap 161/tcp closed snmp 222/tcp closed rsh-spx 443/tcp closed https 873/tcp closed rsync 3306/tcp closed mysql 3389/tcp closed ms-term-serv 8000/tcp closed http-alt 8080/tcp closed http-proxy 8081/tcp closed blackice-icecap 9991/tcp closed issa 9992/tcp closed issc /tcp closed abyss Nmap finished: 1 IP address (1 host up) scanned in 47.591 seconds Running nmap against the same IP, from the master the XEN server, I get the following: Not shown: 1691 filtered ports PORT STATE SERVICE 80/tcp open http 443/tcp closed https 7001/tcp closed afs3-callback 8000/tcp closed http-alt 8080/tcp closed http-proxy 8081/tcp closed blackice-icecap So, how do you explain this one? The Xen server is in a different subnet from the Xen domU, but I don't think that would make a difference right? -- Kind Regards Rudi Ahlers ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
[EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 14:11:06 +0200: 443/tcp closed https sorry, I dind't look close enough. closed, of course, means closed ;-) Did you disable firewall for testing on *every* host that is involved (e.g. on the hosts you try to access/run nmap from), including the gateway? Is this the only IRC service you have running? I'd rather guess you don't have a xen problem, but simply block that port somewhere on the way, and be it on your gateway. Running tcpdump on every involved host may help. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] conntrack-tools and Session syncing
Hi folks, I have 2 firewalls, setup with Centos 5.2. They are also routers, connected to 2 upstream routers. I have some cases where connections from servers to the internet leave my network via router2 and answers come back via router1. So I added conntrack tools to both routers/firewalls to synchronize the session tables (using ftfw procotol). That works as expected. If e.g. I ping from an inside server to somewhere outside, ICMP request leaves via router2, the answer comes back via router1. conntrack -e on router1 shows this session (as unreplied), BUT the firewall blocks it as new connection - that means iptables does not recognize conntrackd's addition to the session table. Seems that I have a conceptional misunderstanding here - but I do not find anything that could be wrong. Could somebody please help? I am stuck. Any hint or help is appreciated. Dirk ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
Just an update on this, when I add x.x.136.105 to the domU, and ran nmap on that IP, the IRC ports are open, so that confirms my theory - this is then a routing issue between the dom0 domU, right? But how do I fix it? On 8/10/08, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hey Kai, I just made an interesting discovery. As I said in my previous post, the domU is running on a different subnet from the dom0 - and although the traffic from the dom0 to the domU doesn't travel via a switch, it does seem like this is causing a problem The dom0 is on x.x.136.110/27 (x.x.136.97 = default gw) and the domU is on x.x.136.55/27 (x.x.136.33 = default gw) The subnet mask on both are 255.255.255.224 The server connects to a switch, and then to a firewall on the internet. The network firewall itself has 4 WAN ports, and 4 different subnets. For a fact, I know I can't communicate with a host from one subnet, to a host on another subnet, since the network firewall doesn't allow it. So, I have a feeling this affect the networking on the Xen server as well, even if I take the network firewall out of the picture. How do I work with a XEN domU on a different subnet than the XEN dom0? On 8/10/08, Kai Schaetzl [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 14:11:06 +0200: 443/tcp closed https sorry, I dind't look close enough. closed, of course, means closed ;-) Did you disable firewall for testing on *every* host that is involved (e.g. on the hosts you try to access/run nmap from), including the gateway? Is this the only IRC service you have running? I'd rather guess you don't have a xen problem, but simply block that port somewhere on the way, and be it on your gateway. Running tcpdump on every involved host may help. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Kind Regards Rudi Ahlers -- Kind Regards Rudi Ahlers ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
[EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 14:55:30 +0200: How do I work with a XEN domU on a different subnet than the XEN dom0? If you just want to work with it, you can use xm console. If you want to have a network connection between the two, it's like with any other host, there is no difference between virtual and physical. There is no magic that connects host and guest via network. They have to have at least one IP address on the same subnet or a router must route between them. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
[EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 15:00:02 +0200: But how do I fix it? Your router is probably routing between the one subnet and outside and the other subnet and outside, but not between the two. Easiest solution is to do what you did: use IP in same subnet. For my Office network I usually put all hosts I want to access from within the network on the same private subnet. If I want to have any of them accessible via one of the public addresses I have I add that address to the host and enable passthru in the firewall. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
Yes, the VPS needs internet access. So, do I need to make changes on the network firewall? Or what do I do? I have since addes x.x.136.56 to the hom dom0, and when I nmap the domU, I can see the IRC ports open, but I now I can't connect to them from the internet. But how do I tell the domU to route all traffic via then new internface, eth0:2 (x.x.136.56) I have added the default gw x.x.136.33 to the dom0 the domU already On 8/10/08, Kai Schaetzl [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 14:55:30 +0200: How do I work with a XEN domU on a different subnet than the XEN dom0? If you just want to work with it, you can use xm console. If you want to have a network connection between the two, it's like with any other host, there is no difference between virtual and physical. There is no magic that connects host and guest via network. They have to have at least one IP address on the same subnet or a router must route between them. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Kind Regards Rudi Ahlers ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
If I use birdge mode for the VPS's, which is the defalt for XEN, then surely the host OS's networking won't make any difference, right? On 8/10/08, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Yes, the VPS needs internet access. So, do I need to make changes on the network firewall? Or what do I do? I have since addes x.x.136.56 to the hom dom0, and when I nmap the domU, I can see the IRC ports open, but I now I can't connect to them from the internet. But how do I tell the domU to route all traffic via then new internface, eth0:2 (x.x.136.56) I have added the default gw x.x.136.33 to the dom0 the domU already On 8/10/08, Kai Schaetzl [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 14:55:30 +0200: How do I work with a XEN domU on a different subnet than the XEN dom0? If you just want to work with it, you can use xm console. If you want to have a network connection between the two, it's like with any other host, there is no difference between virtual and physical. There is no magic that connects host and guest via network. They have to have at least one IP address on the same subnet or a router must route between them. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Kind Regards Rudi Ahlers -- Kind Regards Rudi Ahlers ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] conntrack-tools and Session syncing
Hi Robert, --On 10. August 2008 10:04:37 -0400 Robert Spangler [EMAIL PROTECTED] wrote: On Sunday 10 August 2008 08:36, Dirk H. Schulz wrote: That works as expected. If e.g. I ping from an inside server to somewhere outside, ICMP request leaves via router2, the answer comes back via router1. conntrack -e on router1 shows this session (as unreplied), BUT the firewall blocks it as new connection - that means iptables does not recognize conntrackd's addition to the session table. First off if you have traffic leaving one router and coming back on another router that is Asynchronous routing and is not a good thing, as you are seeing. Firewall 1 doesn't know what firewall 2 is doing so firewall 1 is going to block this traffic as it was setup to do. Firewall 1 is thinking this is a new connection. That is why I used conntrack-tools to synchronize the session tables of both firewalls. According to conntrackd -e it works - it shows (e. g. on router 1) the sessions that have been synchronized over (e.g. from router 2). But the sync'd sessions seem not to bother netfilter. Since I don't know your setup my question is; 1. how many Internet connections do you have? This is still in setup phase, but they will be very many. 2. does router 2 have a valid public ip on the interface connecting to the Internet? Yes. Both routers have public ips as they both are connected to upstream routers. Dirk ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't access irc server on xen domU, please help
[EMAIL PROTECTED] wrote on Sun, 10 Aug 2008 16:04:20 +0200: If I use birdge mode for the VPS's, which is the defalt for XEN, then surely the host OS's networking won't make any difference, right? Depends on how you define any difference. As I said if you use bridge mode standard xen networking host and guest behave like independant physical machines. You have to do the same that you would do for two physical machines. There is no magic bond between them. If you use xen routed networking you should have told so. I've never used that. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen and bonding on Centos 5.2
If you are using kernel 92.1.6 it's because apparently there is a bug. I haven't tried 92.1.10 to check if it has been solved. On 5.2 stock kernel on the other hand I have no problems. Francesco Policlinico San Marco Italy - Original Message - From: Dirk H. Schulz [EMAIL PROTECTED] To: CentOS mailing list centos@centos.org Sent: Friday, 8 August, 2008 5:33:09 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna Subject: [CentOS] Xen and bonding on Centos 5.2 Hi folks, I am stuck with a weird phenomenon. I have set up two servers as xen servers with bonded interfaces (mode 1). The bond interface works fine on both servers as long as xen is not used. When using xen's network-bridge script (with netdev=bond0), one server works fine without problems, and the other starts upping and downing the slave interfaces of the bond in a very fast manner (several runs per second). Both configurations are identical, the only difference is: - the working server has tg3 nic drivers - the dysfunctional server has e100 nic drivers. Does it really depend on the nic driver if bonding works? And why does it not work in xen, but work fine without xen? What can I do to analyse the problem? I know I could ask this on the xen list, but I fear that this is a redhat/centos specific phenomenon. Any hint or help is appreciated. Dirk ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] conntrack-tools and Session syncing
Hi Robert,
--On 10. August 2008 13:56:22 -0400 Robert Spangler
[EMAIL PROTECTED] wrote:
- snip -
OK, I don't know this tool you are using to syn the conntracking of all
the firewalls. Could you post a link to it?
Yes, of course:
http://www.netfilter.org/projects/conntrack-tools/index.html
Now for the fun stuff. Why would you have many Internet connection that
do not return the same path they go out on? sounds like you really only
have one true connection with one true IP to the Internet. That would
explain why traffic leaving on interface 2 comes back on interface 1.
It is two routers that are connected to 2 upstream routers; all four use
OSPFv2 for routing between them.
I have not finetuned OSPF so far to avoid asynchronous routing - I want to
to do the connection table synchronization stuff before because I have to
do it anyway (in case of a router crash) and now I have an ideal testbed
(because of the asynchronous routing).
Without knowing your setup I'm not going to guess at this.
The setup is as follows: Every Router has
- an external interface with public ip address each resting in a small
separate subnet that connects to the upstream router
- an interface for inter router connections (private ip addresses)
- 2 additional interfaces to server LANs - both routers have an interface
to both of the 2 server LANs
both server LAN interface use shared virtual ips additionally
If you need more detailed information I could offer the OSFP configuration
(XORP).
Here is the configuration for conntrackd (I have omitted buffer sizes
etc.):
Sync {
Mode FTFW {
ResendBufferSize 262144
CommitTimeout 180
ACKWindowSize 20
}
Multicast {
IPv4_address 225.0.0.50
IPv4_interface 192.168.11.1
Interface eth1
Group 3780
}
Checksum on
CacheWriteThrough On
}
General {
HashSize 8192
HashLimit 65535
- snip -
IgnoreTrafficFor {
IPv4_address INTER_ROUTER_INTERFACE
IPv4_address EXTERNAL_INTERFACE
IPv4_address INTERNAL_INTERFACE1
IPv4_address INTERNAL_VIRTUAL_IP
IPv4_address INTERNAL_INTERFACE2
}
IgnoreProtocol {
IGMP
VRRP
}
The setup works - using conntrackd -e I can see the connection table
entries the other router's conntrackd has synchronized. What I cannot check
is if the receiving conntrackd writes the received entries into the kernels
connection tracking table.
Example:
udp 17 30 src=124.165.230.206 dst=93.94.81.82 sport=2040 dport=1434
[UNREPLIED] [active since 6s]
tcp 6 120 SYN_SENT src=93.185.115.91 dst=93.94.80.133 sport=4290
dport=135 [UNREPLIED] [active since 46s]
So I hope to find someone on the list have done this kind of setup before.
Thanks for your interest so far.
Dirk
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Re: [CentOS] Writable Centos LiveCD on Embeded Linux?
On Sun, Aug 10, 2008 at 12:39 PM, Oliver Schulze L. [EMAIL PROTECTED] wrote: Hi all, I was wondering if it possible to have a Centos LiveCD installation boot from a Compact Flash in a embeded x86 (Wrap/Alix) platform *and* be able to save the changes made to the File System back to the Flash memory. You would need to really hack at it to get it to that. The ability to do that did not get into Fedora until 9 so its part of the init scripts or the livecd tools to make an overlay partition. So, the next time the LiveCD boots it will have all the changes made. The problem I'm trying yo solve is: - fast boot time - fast recovery when the Linux is shutdown improperly (power failure, etc) - be able to upgrade some rpm packages via yum Will a LiveCD (squash/union FS) be a better solution than booting Centos directly from an ext2(fewer I/O than ext3) partition? Many thanks in advance Oliver -- Oliver Schulze L. Asuncion - Paraguay http://tinymailto.com/oliver ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Stephen J Smoogen. -- BSD/GNU/Linux How far that little candle throws his beams! So shines a good deed in a naughty world. = Shakespeare. The Merchant of Venice ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Xen and bonding on Centos 5.2
Francesco, --On 10. August 2008 20:18:28 +0200 Francesco Camisa [EMAIL PROTECTED] wrote: If you are using kernel 92.1.6 it's because apparently there is a bug. I haven't tried 92.1.10 to check if it has been solved. On 5.2 stock kernel on the other hand I have no problems. The server that has no problem with bonding at all has been using 92.1.6 for weeks now - the server having the problem is still running 53 - I try updating it to 92.1.10 now. Dirk Francesco Policlinico San Marco Italy - Original Message - From: Dirk H. Schulz [EMAIL PROTECTED] To: CentOS mailing list centos@centos.org Sent: Friday, 8 August, 2008 5:33:09 PM GMT +01:00 Amsterdam / Berlin / Bern / Rome / Stockholm / Vienna Subject: [CentOS] Xen and bonding on Centos 5.2 Hi folks, I am stuck with a weird phenomenon. I have set up two servers as xen servers with bonded interfaces (mode 1). The bond interface works fine on both servers as long as xen is not used. When using xen's network-bridge script (with netdev=bond0), one server works fine without problems, and the other starts upping and downing the slave interfaces of the bond in a very fast manner (several runs per second). Both configurations are identical, the only difference is: - the working server has tg3 nic drivers - the dysfunctional server has e100 nic drivers. Does it really depend on the nic driver if bonding works? And why does it not work in xen, but work fine without xen? What can I do to analyse the problem? I know I could ask this on the xen list, but I fear that this is a redhat/centos specific phenomenon. Any hint or help is appreciated. Dirk ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dirk H. Schulz IT Systems Service Wiesenweg 12, 85567 Grafing Tel. 0 80 92/86 25 68 Fax. 0 80 92/86 25 72 -- Technik vom Feinsten - und das nötige Tuning ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Writable Centos LiveCD on Embeded Linux?
On Sun, Aug 10, 2008 at 1:19 PM, Oliver Schulze L. [EMAIL PROTECTED] wrote: Hi Stephen, I read about the overlay feature in Fedora9, but I don't know if when the changes to the FS are so big (like going from 5.1 to 5.2) the overlay will grow and grow over time. And the overlay solution will require too much space. For the live Cd that is about your only choise. The overlay will not grow.. it will eventually fill up, but if you are making that many changes in an embedded environment you really need to think about why you aren't doing a complete reflush of the SSD -- Stephen J Smoogen. -- BSD/GNU/Linux How far that little candle throws his beams! So shines a good deed in a naughty world. = Shakespeare. The Merchant of Venice ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Mount a Xen disk image file
Kai, I am sorry, but I simply do not understand at the moment. I thought xvda is the method the disks are mounted into the VM - you sound like it being the format of the disk itself. Please explain. Dirk --On 8. August 2008 20:31:15 +0200 Kai Schaetzl [EMAIL PROTECTED] wrote: Dirk H. Schulz wrote on Fri, 08 Aug 2008 14:54:20 +0200: What is the problem with xvda? And what is the alternative? Didn't we just discuss that? xvda doesn't allow you simple mounting of the disk from the host, be it file or LV. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dirk H. Schulz IT Systems Service Wiesenweg 12, 85567 Grafing Tel. 0 80 92/86 25 68 Fax. 0 80 92/86 25 72 -- Technik vom Feinsten - und das nötige Tuning ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Writable Centos LiveCD on Embeded Linux?
Hi Stephen, thanks for answering. I'm trying to see if I can get a router using an embeded platform, alix in this case. Since the Alix platform is getting more powerfull and the 1GB compatch flash is also getting cheaper, I was think in createing a full Centos distro booting in that platform. Will read more about the overlay feature and see if it will do the job for me. But maybe I will go back to have an ext2 partition and don't write to it. I like the LiveCD option because of the fast (no fsck) boot feature Regards, Oliver Stephen John Smoogen wrote: On Sun, Aug 10, 2008 at 1:19 PM, Oliver Schulze L. [EMAIL PROTECTED] wrote: Hi Stephen, I read about the overlay feature in Fedora9, but I don't know if when the changes to the FS are so big (like going from 5.1 to 5.2) the overlay will grow and grow over time. And the overlay solution will require too much space. For the live Cd that is about your only choise. The overlay will not grow.. it will eventually fill up, but if you are making that many changes in an embedded environment you really need to think about why you aren't doing a complete reflush of the SSD -- Oliver Schulze L. Asuncion - Paraguay http://tinymailto.com/oliver ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Help: Server security compromised?
On Thu, Aug 7, 2008 at 11:53 PM, Ray Leventhal [EMAIL PROTECTED] wrote: My US$0.02 on this.I'm a fan of apf as a front-end to iptables...but it takes some reading to understand the switches and the entire RAB (reactive address blocking) configuration options. Sadly, RAB is poorly documented, but with a bit of tinkering, I've enjoyed this feature tremendously as it cuts down on the hammering I used to get to port 22 by the bots and script kiddies. Sad to say my usual tasks keep me sufficiently occupied that I hardly have the time to study what APF actually does. It came with ELS (Easy Linux Security) scripts with directadmin, sounds like A Good Idea (tm) so I just installed it. Personally I'm aghast at the manner in which I'm running the server but practically there is only that much time I can devote to being the server admin. If you've a static IP at your workstation, add your IP address to the apf nicely formed 'allow_hosts.rules' file, usually located in /etc/apf. This is a simple IP address or IP block list (using slash notation, i.e. 192.168.1.0/24) to allow access to an IP or range of IPs. Further, the deny_hosts.rules list is the same format for hosts to always deny. I had considered this allowed only x.x.x.x ip strategy very early on since it appeared to be an obvious way to head off attacks/probes from external parties. Unfortunately, like most folks, I'm on dynamic IP. My primary role also requires me to run around very often, necessitating urgent administration from a variety of potential sub-networks from whichever ISP happens to be providing access at the location. So I figured it would be quite impractical to attempt to limit access to only certain IP addresses. Although thinking about it now, extending the concept from a previous suggestion, I suppose it is theoretically possible to write a privileged script accessible from one of the server hosted domains to activate an allow-host rule addition to the firewall and a cronjob that routinely activates another script to removed added hosts after 1 hour or something. So anytime access is needed, I would hit the website to activate the script to open up SSH access to the IP I am using at the moment and then SSH in. But of course, easier said than done since I barely know shell scripting and allowing exec in PHP had always been met with a big frown personally. :D ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] gcc editor for newbie (Emacs or vim or ?)
I downloaded the .pdf version of Thinking in C++ and I've begun to read that and I did yum groupinstall 'Development Tools' I'm a Newbie Desktop user, jumping into the deep end of the pool. Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? An easy learning curve is strongly preferred, but, I am 100% aware of the advantages of vi. Recommendations? TIA! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rebuilding the kernel.
Johnny Hughes wrote: Yahia Tachwali wrote: Yahia Tachwali wrote: Thank you very much for the link.. I have built a new bootable kernel 2.6.9-67 on my machine. However I still have a problem :( During the installation at make menuconfig stage after make oldconfig I have added the generic HDLC package with synchronous PPP support and saved the new config then run rpmbuild -bb --target=`uname -m` kernel-2.6.spec 2 build-err.log | tee build-out.log. After reboot, I rechecked the menuconfig to make sure that the HDLC setting is there. I am not sure if this setting took effect or I have to make modules or build something else. So how would I know that the HDLC package is availalbe and built in? To elaborate more on the reasons behind this HDLC package, I am trying to build a device driver that asks for HDLC support. upon building the driver, I get the following warnings: Building modules, stage 2. MODPOST *** Warning: unregister_hdlc_device [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined! *** Warning: hdlc_ioctl [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined! *** Warning: hdlc_open [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined! *** Warning: register_hdlc_device [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined! *** Warning: hdlc_close [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined! *** Warning: alloc_hdlcdev [/home/DS3/wanPTMC-256T3_2_0B/driver/wan256t3.ko] undefined! Therefore, I am suspecting that I need the HDLC package available. I would be extremely thankful for anybody who can help me in this problem. Am I going into the wrong direction? [EMAIL PROTECTED] wrote: Johnny Hughes pisze: [EMAIL PROTECTED] wrote: Yahia Tachwali pisze: Hello folks, Hi. It is request for it to add this in kernel for centosplus, look at this: http://bugs.centos.org/view.php?id=3019 I am trying to add HDLC module support in the menuconfig. However, I am facing difficulties in rebuilding the kernel and modules. My main objective is to get the HDLC supported in kernel 2.6.9. I have a CentOS 4.4 with kernel 2.6.9.42. I need help in finding the best way to add the HDLC support whether through getting an RPM package for it or refering me to the right procedure in rebuilding the kernel. Thank you very much in advance for your help. No problem. That request was for CentOS-5, not CentOS-4 :D ? I can see: Category: [CentOS-4] kernel-centosplus My request was exactly for centos 4 branch, but for 5 is good too. So, can i count for You to make it posible in centos4 to support hdlc ? HDLC was added to the CentOS-5 plus kernel for the latest version. Sorry about the top posting :( After reconfiguring the menuconfig to enable the HDLC suport package (under device drivers). I have tried also do: modinfo hdlc but i did not get any info in return... Also I have tried : lsmod to check for hdlc module but I could not find it... I guess I am missing something to activate my new settings in the menuconfig. Is there a way to verify that my new settings active!! Does any body know about the HDLC modules loading in the 2.6.9. Please advise. And thank you all for your help. After you rebuild the RPM, you need to install the new RPM you just built. After that, modinfo should work ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hello, Thank you for the info, I have installed the rpm and I ended up with the following : -- [EMAIL PROTECTED] i686]# rpm -ivh kernel-*.rpm Preparing...### [100%] package kernel-2.6.9-67.0.22.EL is already installed package kernel-devel-2.6.9-67.0.22.EL is already installed package kernel-hugemem-devel-2.6.9-67.0.22.EL is already installed package kernel-smp-devel-2.6.9-67.0.22.EL is already installed file /boot/System.map-2.6.9-67.0.22.EL from install of kernel-2.6.9-67.0.22.EL conflicts with file from package kernel-2.6.9-67.0.22.EL file /boot/config-2.6.9-67.0.22.EL from install of kernel-2.6.9-67.0.22.EL conflicts with file from package kernel-2.6.9-67.0.22.EL file /boot/symvers-2.6.9-67.0.22.EL.gz from install of kernel-2.6.9-67.0.22.EL conflicts with file from package kernel-2.6.9-67.0.22.EL file /boot/vmlinuz-2.6.9-67.0.22.EL from install of kernel-2.6.9-67.0.22.EL conflicts with file from package kernel-2.6.9-67.0.22.EL -- However, I was able to reboot with the new kernel but still I can not find o files for my HDLC in the kernel path under driver/net/wan. I am
Re: [CentOS] gcc editor for newbie (Emacs or vim or ?)
On Sun, 10 Aug 2008 17:04:16 -0500 Lanny Marcus [EMAIL PROTECTED] wrote: Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? That's the sort of question where, if you ask ten people for their opinion, you will get sixteen different answers. At least. I personally use either vi or nedit, depending on what the current environment is and what I'm trying to accomplish. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rebuilding the kernel.
On Sun, Aug 10, 2008 at 3:07 PM, Yahia Tachwali
[EMAIL PROTECTED] wrote:
Thank you for the info, I have installed the rpm and I ended up with the
following :
--
[EMAIL PROTECTED] i686]# rpm -ivh kernel-*.rpm
Preparing...###
[100%]
package kernel-2.6.9-67.0.22.EL is already installed
package kernel-devel-2.6.9-67.0.22.EL is already installed
package kernel-hugemem-devel-2.6.9-67.0.22.EL is already installed
package kernel-smp-devel-2.6.9-67.0.22.EL is already installed
file /boot/System.map-2.6.9-67.0.22.EL from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
file /boot/config-2.6.9-67.0.22.EL from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
file /boot/symvers-2.6.9-67.0.22.EL.gz from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
file /boot/vmlinuz-2.6.9-67.0.22.EL from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
--
However, I was able to reboot with the new kernel but still I can not find o
files for my HDLC in the kernel path under driver/net/wan. I am listing
below the steps that I did to install a new customized kernel starting from
fresh installation of CentOS 4.4 with kernel 2.6.9-42
1- getting the kernel:
1.1 access as root
1.2 yum install rpm-build redhat-rpm-config
1.3 su user
1.4 cd
1.5 mkdir -p rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
1.6 echo %_topdir %(echo $HOME)/rpmbuild .rpmmacros
1.7 rpm -i
http://mirror.centos.org/centos/4/updates/SRPMS/kernel-2.6.9-67.0.22.EL.src.rpm
2 /dev/null
1.8 cd ~/rpmbuild/SPECS
1.9 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log | tee
prep-out.log
Looks good so far.
These so far sound fine. but then I guess there might be a mistake or
missing step in my procdure to build the new kernel:
2- building a new kernel:
2.1 access as root
2.2 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log | tee
prep-out.log
The above rpmbuild is not necessary. You have done it correctly in
step 1.9 (as user).
2.3 su user
2.4 cd ~/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.`uname -m`
2.5 cp configs/kernel-2.6.18-i686.config .config
2.6 make oldconfig
2.7 make menuconfig {here I left it as is and did not do any modification
since I am planning to include HDLC as a module after build
a complete custom kernel}
I am confused. If you did not make any changes here, why would you
expect your new kernel to provide the HDLC support (see above) ???
2.8 [EMAIL PROTECTED] SPECS]$ rpmbuild -bb --target=`uname -m`
kernel-2.6.spec 2
build-err.log | tee build-out.log
Before that step (rpmbuild -bb), you should at least edit the line:
%define buildid .your_identifier
as written in the Wiki tutorial to make your rpm's version different
from the distro's.
2.9 su
2.10/ rpm -ivh kernel-*.rpm
and after the last command I have got the conflict warning above. What is
wrong in my installation procedure! :( Please help.
/
Your customized kernel has the same version/revision as the
distro's. So, it won't install unless you force it (not recommended
at all).
Akemi
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gcc editor for newbie (Emacs or vim or ?)
On Sun, Aug 10, 2008 at 3:11 PM, Frank Cox [EMAIL PROTECTED] wrote: On Sun, 10 Aug 2008 17:04:16 -0500 Lanny Marcus [EMAIL PROTECTED] wrote: Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? That's the sort of question where, if you ask ten people for their opinion, you will get sixteen different answers. At least. I personally use either vi or nedit, depending on what the current environment is and what I'm trying to accomplish. OK, I'm the second of the sixteen answers. I use vi and elvis (GUI editor 100% compatible with vi). I highly recommend you learn vi. You will never regret :-D Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rebuilding the kernel.
Akemi Yagi wrote:
On Sun, Aug 10, 2008 at 3:07 PM, Yahia Tachwali
[EMAIL PROTECTED] wrote:
Thank you for the info, I have installed the rpm and I ended up with the
following :
--
[EMAIL PROTECTED] i686]# rpm -ivh kernel-*.rpm
Preparing...###
[100%]
package kernel-2.6.9-67.0.22.EL is already installed
package kernel-devel-2.6.9-67.0.22.EL is already installed
package kernel-hugemem-devel-2.6.9-67.0.22.EL is already installed
package kernel-smp-devel-2.6.9-67.0.22.EL is already installed
file /boot/System.map-2.6.9-67.0.22.EL from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
file /boot/config-2.6.9-67.0.22.EL from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
file /boot/symvers-2.6.9-67.0.22.EL.gz from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
file /boot/vmlinuz-2.6.9-67.0.22.EL from install of
kernel-2.6.9-67.0.22.EL conflicts with file from package
kernel-2.6.9-67.0.22.EL
--
However, I was able to reboot with the new kernel but still I can not find o
files for my HDLC in the kernel path under driver/net/wan. I am listing
below the steps that I did to install a new customized kernel starting from
fresh installation of CentOS 4.4 with kernel 2.6.9-42
1- getting the kernel:
1.1 access as root
1.2 yum install rpm-build redhat-rpm-config
1.3 su user
1.4 cd
1.5 mkdir -p rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
1.6 echo %_topdir %(echo $HOME)/rpmbuild .rpmmacros
1.7 rpm -i
http://mirror.centos.org/centos/4/updates/SRPMS/kernel-2.6.9-67.0.22.EL.src.rpm
2 /dev/null
1.8 cd ~/rpmbuild/SPECS
1.9 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log | tee
prep-out.log
Looks good so far.
These so far sound fine. but then I guess there might be a mistake or
missing step in my procdure to build the new kernel:
2- building a new kernel:
2.1 access as root
2.2 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log | tee
prep-out.log
The above rpmbuild is not necessary. You have done it correctly in
step 1.9 (as user).
2.3 su user
2.4 cd ~/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.`uname -m`
2.5 cp configs/kernel-2.6.18-i686.config .config
2.6 make oldconfig
2.7 make menuconfig {here I left it as is and did not do any modification
since I am planning to include HDLC as a module after build
a complete custom kernel}
I am confused. If you did not make any changes here, why would you
expect your new kernel to provide the HDLC support (see above) ???
2.8 [EMAIL PROTECTED] SPECS]$ rpmbuild -bb --target=`uname -m` kernel-2.6.spec
2
build-err.log | tee build-out.log
Before that step (rpmbuild -bb), you should at least edit the line:
%define buildid .your_identifier
as written in the Wiki tutorial to make your rpm's version different
from the distro's.
2.9 su
2.10/ rpm -ivh kernel-*.rpm
and after the last command I have got the conflict warning above. What is
wrong in my installation procedure! :( Please help.
/
Your customized kernel has the same version/revision as the
distro's. So, it won't install unless you force it (not recommended
at all).
Akemi
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
Thank you. So if it is not recommended to force it , what should I do to
get it installed ?
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gcc editor for newbie (Emacs or vim or ?)
On Sun, Aug 10, 2008 at 05:04:16PM -0500, Lanny Marcus wrote: I downloaded the .pdf version of Thinking in C++ and I've begun to read that and I did yum groupinstall 'Development Tools' I'm a Newbie Desktop user, jumping into the deep end of the pool. Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? An easy learning curve is strongly preferred, but, I am 100% aware of the advantages of vi. Recommendations? TIA! gvim There is almost no pain if you stick with gvim (vim). The help is full of helpfull stuff, the mouse works, syntax and keyword aware You might also look at Eclipse. -- T o m M i t c h e l l Got a great hat... now what. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rebuilding the kernel.
On Sun, Aug 10, 2008 at 4:04 PM, Yahia Tachwali
[EMAIL PROTECTED] wrote:
Akemi Yagi wrote:
1- getting the kernel:
1.1 access as root
1.2 yum install rpm-build redhat-rpm-config
1.3 su user
1.4 cd
1.5 mkdir -p rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
1.6 echo %_topdir %(echo $HOME)/rpmbuild .rpmmacros
1.7 rpm -i
http://mirror.centos.org/centos/4/updates/SRPMS/kernel-2.6.9-67.0.22.EL.src.rpm
2 /dev/null
1.8 cd ~/rpmbuild/SPECS
1.9 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log |
tee
prep-out.log
Looks good so far.
These so far sound fine. but then I guess there might be a mistake or
missing step in my procdure to build the new kernel:
2- building a new kernel:
2.1 access as root
2.2 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log |
tee
prep-out.log
The above rpmbuild is not necessary. You have done it correctly in
step 1.9 (as user).
2.3 su user
2.4 cd ~/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.`uname -m`
2.5 cp configs/kernel-2.6.18-i686.config .config
2.6 make oldconfig
2.7 make menuconfig {here I left it as is and did not do any
modification
since I am planning to include HDLC as a module after
build
a complete custom kernel}
I am confused. If you did not make any changes here, why would you
expect your new kernel to provide the HDLC support (see above) ???
2.8 [EMAIL PROTECTED] SPECS]$ rpmbuild -bb --target=`uname -m`
kernel-2.6.spec
2
build-err.log | tee build-out.log
Before that step (rpmbuild -bb), you should at least edit the line:
%define buildid .your_identifier
as written in the Wiki tutorial to make your rpm's version different
from the distro's.
2.9 su
2.10/ rpm -ivh kernel-*.rpm
and after the last command I have got the conflict warning above. What
is
wrong in my installation procedure! :( Please help.
/
Your customized kernel has the same version/revision as the
distro's. So, it won't install unless you force it (not recommended
at all).
Akemi
Thank you. So if it is not recommended to force it , what should I do to get
it installed ?
Please read my reply to you in its entirety, not just the last part --
especially the line about buildid.
Akemi
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gcc editor for newbie (Emacs or vim or ?)
On Sun, 2008-08-10 at 15:40 -0700, Akemi Yagi wrote: On Sun, Aug 10, 2008 at 3:11 PM, Frank Cox [EMAIL PROTECTED] wrote: On Sun, 10 Aug 2008 17:04:16 -0500 Lanny Marcus [EMAIL PROTECTED] wrote: Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? These two usually result in religious wars. Emacs is *very* powerful and customizable and extensible. Probably makes the learning curve longer. But it already has definitions for several languages. Vim also has some. I never used emacs much as I already had a cake walk into vi (now vim) because it uses a lot of what you find in regex, which I was intimately familiar with, from heavy ed usage before vim was a gleam in someone's eye. If you already have some familiarity with regex (grep, sed, et al), you'll probably find vim faster to learn. Then I would suggest that. Otherwise, take a quick browse of the man pages for both, pick one or the other and use it (almost) exclusively. You'll quickly become competent if you use it a lot and take brief reads of succeeding sections in the man pages or tutorials. snip -- Bill ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gcc editor for newbie (Emacs or vim or ?)
Lanny Marcus wrote: I downloaded the .pdf version of Thinking in C++ and I've begun to read that and I did yum groupinstall 'Development Tools' I'm a Newbie Desktop user, jumping into the deep end of the pool. Should I try to learn vi (Vim) (which obviously will help me, if I ever need to administer a remote box) or install Emacs or something else, for the gcc editor? An easy learning curve is strongly preferred, but, I am 100% aware of the advantages of vi. Recommendations? TIA! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hi, I suggest to install Eclipse and CDT plugin and you get a full IDE http://www.eclipse.org/cdt/ BR Vaclav ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Question about Open SSH Public Keys
Hi People I am setting up some systems with ssh public keys and as part of this I am using the from directive inside .ssh/authorized_keys. Currently I am using the IP address to control the source. eg from=10.0.0.1 but on one CentOS 4 System that is up to date this will only work if I replace the IP with the DNS name of the server. I have verified that DNS is resolving the DNS Name to the correct IP address on the server in question and all seems to be fine. Aside from this CentOS Box have only been able to test this out on some old FC6 Machines and they behave as I expected. Anyone got any ideas why this might be happening ? I have compared the sshd config between the FC6 Machines and the CentOS Box and can't spot anything that would explain the issue. Thanks for any ideas, and have a nice day :) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about Open SSH Public Keys
Clint Dilks wrote: Hi People I am setting up some systems with ssh public keys and as part of this I am using the from directive inside .ssh/authorized_keys. Currently I am using the IP address to control the source. eg from=10.0.0.1 but on one CentOS 4 System that is up to date this will only work if I replace the IP with the DNS name of the server. I have verified that DNS is resolving the DNS Name to the correct IP address on the server in question and all seems to be fine. Just grasping at straws, but does the reverse DNS zone resolve to the correct DNS name? For example, if the DNS entry bob.example.com translates to 10.0.0.1, does 10.0.0.1 resolve to bob.example.com? -- Jay Leafey - Memphis, TN [EMAIL PROTECTED] smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about Open SSH Public Keys
Jay Leafey wrote: Clint Dilks wrote: Hi People I am setting up some systems with ssh public keys and as part of this I am using the from directive inside .ssh/authorized_keys. Currently I am using the IP address to control the source. eg from=10.0.0.1 but on one CentOS 4 System that is up to date this will only work if I replace the IP with the DNS name of the server. I have verified that DNS is resolving the DNS Name to the correct IP address on the server in question and all seems to be fine. Just grasping at straws, but does the reverse DNS zone resolve to the correct DNS name? For example, if the DNS entry bob.example.com translates to 10.0.0.1, does 10.0.0.1 resolve to bob.example.com? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hi Jay :) That was what I was trying to say with I have verified that DNS is resolving the DNS Name to the correct IP address on the server in question and all seems to be fine. So yes I believe this is correct ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rebuilding the kernel.
Akemi Yagi wrote:
On Sun, Aug 10, 2008 at 4:04 PM, Yahia Tachwali
[EMAIL PROTECTED] wrote:
Akemi Yagi wrote:
1- getting the kernel:
1.1 access as root
1.2 yum install rpm-build redhat-rpm-config
1.3 su user
1.4 cd
1.5 mkdir -p rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
1.6 echo %_topdir %(echo $HOME)/rpmbuild .rpmmacros
1.7 rpm -i
http://mirror.centos.org/centos/4/updates/SRPMS/kernel-2.6.9-67.0.22.EL.src.rpm
2 /dev/null
1.8 cd ~/rpmbuild/SPECS
1.9 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log |
tee
prep-out.log
Looks good so far.
These so far sound fine. but then I guess there might be a mistake or
missing step in my procdure to build the new kernel:
2- building a new kernel:
2.1 access as root
2.2 rpmbuild -bp --target=`uname -m` kernel-2.6.spec 2 prep-err.log |
tee
prep-out.log
The above rpmbuild is not necessary. You have done it correctly in
step 1.9 (as user).
2.3 su user
2.4 cd ~/rpmbuild/BUILD/kernel-2.6.18/linux-2.6.18.`uname -m`
2.5 cp configs/kernel-2.6.18-i686.config .config
2.6 make oldconfig
2.7 make menuconfig {here I left it as is and did not do any
modification
since I am planning to include HDLC as a module after
build
a complete custom kernel}
I am confused. If you did not make any changes here, why would you
expect your new kernel to provide the HDLC support (see above) ???
2.8 [EMAIL PROTECTED] SPECS]$ rpmbuild -bb --target=`uname -m` kernel-2.6.spec
2
build-err.log | tee build-out.log
Before that step (rpmbuild -bb), you should at least edit the line:
%define buildid .your_identifier
as written in the Wiki tutorial to make your rpm's version different
from the distro's.
2.9 su
2.10/ rpm -ivh kernel-*.rpm
and after the last command I have got the conflict warning above. What
is
wrong in my installation procedure! :( Please help.
/
Your customized kernel has the same version/revision as the
distro's. So, it won't install unless you force it (not recommended
at all).
Akemi
Thank you. So if it is not recommended to force it , what should I do to get
it installed ?
Please read my reply to you in its entirety, not just the last part --
especially the line about buildid.
Akemi
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Hello Akemi,
I am sorry, I missed your extremely helpful notes. I got it working!!!
Thank you very much... I got now my card running after getting the HDLC
module loaded. Thank you very much to you and all the group for this
support.
I am still wondering if what I did is an overkill to get the module
loaded. I had the CentOS 4.4 with kernel 2.6.9.42 before installing this
2.6.9.67 kernel. Is there a way to get the HDLC module built and
installed with minimal steps rather than going into a complete fresh
kernel rebuilt? My understanding from tutorials in the web that all what
you need is to make and make install after editing the config file, but
unfortunately that did not work in my original kernel, and that is why I
decided to get a fresh kernel to experiment on.
If I can really get HDLC built and load without kernel build or download
another kernel source. What could be missing in my original 2.6.9.42
kernel that prevents me from doing make and make install after editing
the config file?
Again, I appreciate alot the help and support from this group. You all
have helped me alot and I am very thankful.
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