Re: [CentOS] Flash player beta
> FYI, this has been reported on the Adobe "Flash Player Beta Channel" forum, > and I've +1ed it. I would suggest doing the same to add some more pressure > on them. > > > https://forums.adobe.com/thread/2209127 (Adobe sign-in required) I didn't see anything in the release notes, but the current release is working now on 6.8. Looks like they were listening. It doesn't change my opinion about luser corporations who think it's ok to build a flash-based management interface for their wares (looking at you, VMware). ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
[CentOS] Disable hybernate/suspend in CentOS 7
Dear Experts, Could someone point me in the right direction: how can I disable hybernate/suspend in CentOS 7? I get workstations for graduate students with decent amount of RAM (32 GB), and for machines with large RAM I either do not have swap at all of have some small (4 GB) swap. As I remember from older manuals, one has to have at least twice amount of swap compared to physical RAM for hybernate/suspend to work. This probably is what bit me: new Dells came with keyboard that has sleep button, when one hits that button the machine locks up. (it stays powered on, does not respond mouse, keyboard, does not respond ping). I would like to disable that sleep button on keyboard. (I'm kind of trying to avoid replacing keyboard with the ones that do not have "sleep" key). Thanks a lot for all your help! Valeri Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disable hybernate/suspend in CentOS 7
On Thu, Oct 13, 2016 at 11:33 AM, Valeri Galtsev wrote: > Dear Experts, > > Could someone point me in the right direction: how can I disable > hybernate/suspend in CentOS 7? > > I get workstations for graduate students with decent amount of RAM (32 > GB), and for machines with large RAM I either do not have swap at all of > have some small (4 GB) swap. As I remember from older manuals, one has to > have at least twice amount of swap compared to physical RAM for > hybernate/suspend to work. This probably is what bit me: new Dells came > with keyboard that has sleep button, when one hits that button the machine > locks up. (it stays powered on, does not respond mouse, keyboard, does not > respond ping). > > I would like to disable that sleep button on keyboard. (I'm kind of trying > to avoid replacing keyboard with the ones that do not have "sleep" key). > Have you tried disabling power management via GRUB options? http://askubuntu.com/a/130541 > > Thanks a lot for all your help! > > Valeri > > > Valeri Galtsev > Sr System Administrator > Department of Astronomy and Astrophysics > Kavli Institute for Cosmological Physics > University of Chicago > Phone: 773-702-4247 > > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos > -- ---~~.~~--- Mike // SilverTip257 // ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disable hybernate/suspend in CentOS 7
On 13/10/16 16:33, Valeri Galtsev wrote: Dear Experts, Could someone point me in the right direction: how can I disable hybernate/suspend in CentOS 7? I get workstations for graduate students with decent amount of RAM (32 GB), and for machines with large RAM I either do not have swap at all of have some small (4 GB) swap. As I remember from older manuals, one has to have at least twice amount of swap compared to physical RAM for hybernate/suspend to work. This probably is what bit me: new Dells came with keyboard that has sleep button, when one hits that button the machine locks up. (it stays powered on, does not respond mouse, keyboard, does not respond ping). I would like to disable that sleep button on keyboard. (I'm kind of trying to avoid replacing keyboard with the ones that do not have "sleep" key). Thanks a lot for all your help! Valeri You should be able to do this with PolicyKit: https://access.redhat.com/solutions/33954 This solution is for RHEL6, but the same polkit rule should work on RHEL7. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Backup Suggestion on C7
I'm not a bacula expert, but have had 30+ years in the industry doing backups. I'm a little concerned about what you are planning. As I understand it you are going to be keeping just one copy of each machine on a disk attached to the server. This will help if you loose the running disks (though it is hardly backup in depth), but what happens if you loose the server due to fire, flood, electrical problems, theft or even plain old dropping it? In general you should aim for multiple backup copies; are you willing to bet the company's future on one untried copy? You should ensure that the backup copies are held preferably off site, failing that in a separate building, or else in a secure fireproof strongbox. Start by assuming you come into work one day to find the building burnt out and collapsed. Now work out how to rebuild your system on new kit on another site and you'll find that you define your backup needs. Regards, Martin On 12/10/16 12:54, Alessandro Baggi wrote: > Hi list, > I'm building a backup server for 3 hosts (1 workstation, 2 server). I > will use bacula to perform backups. The backup is performed on disks (2 > x 3TB on mdraid mirror) and for each hosts I've created a logical volume > with related size. > > This 3 hosts have different data size with different disk change rate. > Each host must have a limited sized resource and a reserved space. If a > server needs more space to perform backup, It must be enabled and > provisioned. > > My first solution was put each host pools on different logical volumes, > like: > > host1 -> lv1 > host2 -> lv2 > host3 -> lv3 > > and store pools/volumes on specified storage daemon that uses a > specified device for each different hosts. > > host1 -> storage1 -> device_lv1 > host2 -> storage2 -> device_lv2 > host3 -> storage3 -> device_lv3 > > > Unfortunately, I can't define on bacula-sd.conf multiple storage > definition but only multiple devices. To use different storage I must > run 3 bacula-sd on same host (I can?), run a bacula-sd on a vm/host. > Ah, I must use only one physical server. > > With one single machine and the current state I can't use multiple > storage daemons. > > There are other ways to store host volumes on different devices? > > My second solution was, use only one storage daemon (on the same host) > with a single device LVM over mdraid, create pool for each hosts and > limit the size for each volumes on related pool. > > Suggestions? > > Thanks in advance. > > > > > > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Disable hybernate/suspend in CentOS 7
On Thu, October 13, 2016 11:55 am, Mike - st257 wrote: > On Thu, Oct 13, 2016 at 11:33 AM, Valeri Galtsev > > wrote: > >> Dear Experts, >> >> Could someone point me in the right direction: how can I disable >> hybernate/suspend in CentOS 7? >> >> I get workstations for graduate students with decent amount of RAM (32 >> GB), and for machines with large RAM I either do not have swap at all of >> have some small (4 GB) swap. As I remember from older manuals, one has >> to >> have at least twice amount of swap compared to physical RAM for >> hybernate/suspend to work. This probably is what bit me: new Dells came >> with keyboard that has sleep button, when one hits that button the >> machine >> locks up. (it stays powered on, does not respond mouse, keyboard, does >> not >> respond ping). >> >> I would like to disable that sleep button on keyboard. (I'm kind of >> trying >> to avoid replacing keyboard with the ones that do not have "sleep" key). >> > > Have you tried disabling power management via GRUB options? > http://askubuntu.com/a/130541 > Mike, thanks! You gave me good enough push into right direction, thanks to which I solved my problem. Disabling power management via GRUB (boot) options didn't help me. I went further along these lines, tried to tweak related stuff in /etc/systemd/login.conf (systemd experts will probably lough, I'm not one, so... ;-) - didn't help either. I finally came to doing what helped me: edited /usr/share/polkit-1/actions/org.freedesktop.login1.policy (replaced "yes" with "no" in a few related places). This solved my problem. I'm not posting what exactly I changed, as I overdid it (disabled locally logged in user's ability to reboot/poweroff machine, and the same from gdm loging screen - I will need to restore these). Thanks! Valeri > >> >> Thanks a lot for all your help! >> >> Valeri >> >> >> Valeri Galtsev >> Sr System Administrator >> Department of Astronomy and Astrophysics >> Kavli Institute for Cosmological Physics >> University of Chicago >> Phone: 773-702-4247 >> >> ___ >> CentOS mailing list >> CentOS@centos.org >> https://lists.centos.org/mailman/listinfo/centos >> > > > > -- > ---~~.~~--- > Mike > // SilverTip257 // > ___ > CentOS mailing list > CentOS@centos.org > https://lists.centos.org/mailman/listinfo/centos > Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Hint for nslookup wanted ...
>> From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On >> Behalf Of Walter H. >> Sent: Tuesday, October 11, 2016 9:05 AM >> >> has anybody a hint for me, how I can use nslookup to get >> either IPv6 only or both A and entries when doing this: Don't use nslookup: http://web.archive.org/web/20160304065708/http://homepage.ntlworld.com/jonathan.deboynepollard/FGA/nslookup-flaws.html http://groups.google.com/group/comp.protocols.dns.bind/msg/6de73c9eaa37137f http://groups.google.com/group/comp.protocols.dns.bind/msg/39ffce8e8510b9cc ...use dig instead. Peter ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Backup Suggestion on C7
Mark has asked me to forward this to the list: -%<- Subject: Re: [CentOS] Backup Suggestion on C7 Date: Thu, 13 Oct 2016 17:09:41 -0400 From: m.r...@5-cent.us To: J Martin Rushton Please forward to the CentOS list - my hosting provider claims they been working with SORBS, but it's now been blocking me from posting for two weeks J Martin Rushton wrote: > I'm not a bacula expert, but have had 30+ years in the industry doing > backups. I'm a little concerned about what you are planning. As I > understand it you are going to be keeping just one copy of each machine > on a disk attached to the server. This will help if you loose the > running disks (though it is hardly backup in depth), but what happens if > you loose the server due to fire, flood, electrical problems, theft or > even plain old dropping it? In general you should aim for multiple > backup copies; are you willing to bet the company's future on one > untried copy? You should ensure that the backup copies are held > preferably off site, failing that in a separate building, or else in a > secure fireproof strongbox. To start, is the OP doing disaster recovery backups, or archive backups? The difference is the former you only keep for a limited amount of time, and the later forever. If the former: first, you should not be backing up one server to its own disks. The backup should reside on a different server. Secondly, consider an offline backup. Here at work, we use a home-grown rsync solution (with hard links), and typically save those for five weeks. We also back up the backups to either offline disks (mounted in hot swap bays, and they reside the rest of the time in a fire safe; for things that one fit on one disk, they're backed up to a server in another building with a large RAID. For the latter, which I have not been involved with, you should probably have x weeks, then save the weeklies for x months, then the montlies for x years. And *ALL* of that should be offsite. mark, hoping this gets through --%< signature.asc Description: OpenPGP digital signature ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [SOLVED] Re: Backup Suggestion on C7
On 2016-10-12, Alice Wonder wrote: > I'm sure some people will tell me I'm doing it wrong but I always just > use rsync for backups, automated in cron. You're doing it wrong. ;-) You're not really doing it ''wrong'', it just depends on what your needs are. One drawback to using just rsync is, if a user deletes a file, then needs it back after the rsync was run again, the file may no longer be in your backups (similar if the user modified it and needs the original pre-mod file back). If you're okay with that, then rsync is fine for your needs. rsnapshot uses rsync with hard links to be able to efficiently keep snapshots (not point-in-time snapshots, just whatever was present when rsync sync'd each file) on a periodic basis. bacula is a more sophisticated method for doing this efficiently across multiple hosts. LVM snapshots allow for a real point-in-time snapshot (which can then be backed up with your favorite tool). > I may be doing it wrong but it always works. It always works until it doesn't. This is unfortunately all too true when it comes to backups. It's easier to inspect backups on disk than when they used to be done to tape, but it's still good to verify them outside of your normal backup routine periodically. --keith -- kkel...@wombat.san-francisco.ca.us ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gigE -> 100Mb problems
> On Oct 12, 2016, at 12:26 AM, John R Pierce wrote: > > the switch ports kept going offline on us. Not finding anything exactly like this... Closest I could find is CSCuu81949 Open a Cisco TAC case and upload a Nexus 9000 tech support (`tac-pac`) to investigate further. Is "port security" enabled on these ports? Does this port double as a LOM/IPMI port? What driver is being used `ethtool -i eth#`? Any OS bonding? Any switch port-channel/vPC? That NIC chipset is a few years old so it's not like that NIC/OS/switch is a combo that hasn't been tried/tested. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gigE -> 100Mb problems
On 10/13/2016 5:57 PM, Steven Tardy wrote: On Oct 12, 2016, at 12:26 AM, John R Pierce wrote: the switch ports kept going offline on us. Not finding anything exactly like this... Closest I could find is CSCuu81949 Open a Cisco TAC case and upload a Nexus 9000 tech support (`tac-pac`) to investigate further. Is "port security" enabled on these ports? I don't know, asking LAN operations Does this port double as a LOM/IPMI port? no, boards have dedicated IPMI port, which doesn't go offline What driver is being used `ethtool -i eth#`? e1000m Any OS bonding? no Any switch port-channel/vPC? I don't believe so. That NIC chipset is a few years old so it's not like that NIC/OS/switch is a combo that hasn't been tried/tested. yeah, about as bog stock normal a config as I've seen. -- john r pierce, recycling bits in santa cruz ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] gigE -> 100Mb problems
On 10/13/2016 6:32 PM, John R Pierce wrote: What driver is being used `ethtool -i eth#`? e1000m arrgh, typed too fast. e1000e -- john r pierce, recycling bits in santa cruz ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS on new Dell
On Thu, Sep 29, 2016 at 9:18 PM, John R Pierce wrote: > On 9/29/2016 5:55 PM, Michael B Allen wrote: >> >> It seems optical drives are gone. Do I boot the iso from USB or what's >> the procedure now? > > yup, put iso on USB, go to town. Mmn, that didn't work. I dd'd the latest Fedora Live iso onto a USB drive, put it into a brand spanking new Dell Latitude E7470, hit F12 at Dell logo and got "Selected boot device failed". Do I need to make it bootable using fdisk or some such? Mike ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS on new Dell
On 14/10/16 14:03, Michael B Allen wrote: On Thu, Sep 29, 2016 at 9:18 PM, John R Pierce wrote: On 9/29/2016 5:55 PM, Michael B Allen wrote: It seems optical drives are gone. Do I boot the iso from USB or what's the procedure now? yup, put iso on USB, go to town. Mmn, that didn't work. I dd'd the latest Fedora Live iso onto a USB drive, put it into a brand spanking new Dell Latitude E7470, hit F12 at Dell logo and got "Selected boot device failed". Do I need to make it bootable using fdisk or some such? Not that I recall - a simple dd of the iso onto a usb stick just works see https://wiki.centos.org/HowTos/InstallFromUSBkey Mike ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS on new Dell
On 10/13/2016 7:10 PM, Rob Kampen wrote: Mmn, that didn't work. I dd'd the latest Fedora Live iso onto a USB drive, put it into a brand spanking new Dell Latitude E7470, hit F12 at Dell logo and got "Selected boot device failed". Do I need to make it bootable using fdisk or some such? Not that I recall - a simple dd of the iso onto a usb stick just works see https://wiki.centos.org/HowTos/InstallFromUSBkey some USB sticks don't seem to like to be boot devices, and I've never figured out why. Sandisk stuff generally seems to work, and most all my current USB sticks are Sandisk Ultra Fit (the really tiny ones, typically in 16GB or 32GB). -- john r pierce, recycling bits in santa cruz ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS on new Dell
On 10/13/2016 07:39 PM, John R Pierce wrote: On 10/13/2016 7:10 PM, Rob Kampen wrote: Mmn, that didn't work. I dd'd the latest Fedora Live iso onto a USB drive, put it into a brand spanking new Dell Latitude E7470, hit F12 at Dell logo and got "Selected boot device failed". Do I need to make it bootable using fdisk or some such? Not that I recall - a simple dd of the iso onto a usb stick just works see https://wiki.centos.org/HowTos/InstallFromUSBkey some USB sticks don't seem to like to be boot devices, and I've never figured out why. Sandisk stuff generally seems to work, and most all my current USB sticks are Sandisk Ultra Fit (the really tiny ones, typically in 16GB or 32GB). I've had excellent luck with the 16 GB Mushkin atom - and they are fast too, really fast, I suspect some USB 3 thumb drives are really only USB 2 and there will eventually be a lawsuit. But the Mushkin are really fast. ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos