Discuss December 2014

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164 participants
168 discussions

Re: [CentOS] Design changes are done in Fedora
by James B. Byrne 10 Jan '15

10 Jan '15

On Mon, December 29, 2014 04:22, Ned Slider wrote: > What business model do you have that you > can't build around a product guaranteed to be consistent/supported for > the next 10 years? Well, despite the hype from Wall St., Bay St. and The City, a large number of organisations in the world run on software that is decades old and cannot be economically replaced. In many instances in government and business seven years is a typical time-frame in which to get a major software system built and installed. And I have witnessed longer. So, seven, even ten, years of stability is really nothing at all. And as Linux seeks to enter into more and more profoundly valuable employment the type of changes that we witnessed from v6 to v7 are simply not going to be tolerated. In fact, it my considered belief that RH in Version EL7 has done themselves a serious injury with respect to corporate adoption for core systems. Perhaps they seek a different market? Think about it. What enterprise can afford to rewrite all of its software every ten years? What enterprise can afford to retrain all of its personnel to use different tools to accomplish the exact same tasks every seven years? The desktop software churn that the PC has inured in people simply does not scale to the enterprise. If you wish to see what change for change's sake produces in terms of market share consider what Mozilla has done with Firefox. There is absolutely no interface that is as easy to use as the one you have been working on for the past ten years. And that salient fact seems to be completely ignored by many people in the FOSS community. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Radeon graphics problems with CentOS 6.6
by Darby Vicker 06 Jan '15

06 Jan '15

Hello, I saw in the CentOS 6.6 release notes that the Xorg ABI has changed but that "This should not concern anyone who uses the default drivers shipped with CentOS." I'm using the ATI drivers in Base but X still fails when I boot a CentOS 6.6 kernel. I was hoping this is a known problem that would get fixed with a kernel update but I'm still having problems with the 2.6.32-504.1.3.el6.x86_64 kernel. Relevant info below. Any ideas? Thanks, Darby [root@c6 ~]# lspci | grep VGA 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] BeaverCreek [Radeon HD 6530D] [root@c6 ~]# uname -a Linux c6 2.6.32-431.29.2.el6.x86_64 #1 SMP Tue Sep 9 21:36:05 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux [root@c6 ~]# yum list xorg-x11-drv-ati.x86_64 xorg-x11-drv-ati-firmware.noarch Loaded plugins: fastestmirror, refresh-packagekit, security Loading mirror speeds from cached hostfile * base: repos.dfw.quadranet.com * epel: mirror.compevo.com * extras: repos.dfw.quadranet.com * updates: repos.dfw.quadranet.com Installed Packages xorg-x11-drv-ati.x86_64 7.3.99-2.el6 @base xorg-x11-drv-ati-firmware.noarch 7.3.99-2.el6 @base [root@c6 ~]# Log messages containing "radeon" from booting into the CentOS 6.6 kernel: c6 kernel: [drm] radeon kernel modesetting enabled. c6 kernel: fb: conflicting fb hw usage radeondrmfb vs EFI VGA - removing generic driver c6 kernel: radeon 0000:00:01.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 c6 kernel: radeon 0000:00:01.0: VRAM: 512M 0x0000000000000000 - 0x000000001FFFFFFF (512M used) c6 kernel: radeon 0000:00:01.0: GTT: 1024M 0x0000000020000000 - 0x000000005FFFFFFF c6 kernel: [drm] radeon: 512M of VRAM memory ready c6 kernel: [drm] radeon: 1024M of GTT memory ready. c6 kernel: radeon 0000:00:01.0: firmware: requesting radeon/SUMO_pfp.bin c6 kernel: radeon 0000:00:01.0: firmware: requesting radeon/SUMO_me.bin c6 kernel: radeon 0000:00:01.0: firmware: requesting radeon/SUMO_rlc.bin c6 kernel: [drm] radeon: dpm initialized c6 kernel: radeon 0000:00:01.0: firmware: requesting radeon/SUMO_uvd.bin c6 kernel: radeon 0000:00:01.0: WB enabled c6 kernel: radeon 0000:00:01.0: fence driver on ring 0 use gpu addr 0x0000000020000c00 and cpu addr 0xffff8801b6e81c00 c6 kernel: radeon 0000:00:01.0: fence driver on ring 3 use gpu addr 0x0000000020000c0c and cpu addr 0xffff8801b6e81c0c c6 kernel: radeon 0000:00:01.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0xffffc900229b2118 c6 kernel: radeon 0000:00:01.0: radeon: using MSI. c6 kernel: [drm] radeon: irq initialized. c6 kernel: [drm] Radeon Display Connectors c6 kernel: fbcon: radeondrmfb (fb0) is primary device c6 kernel: radeon 0000:00:01.0: fb0: radeondrmfb frame buffer device c6 kernel: radeon 0000:00:01.0: registered panic notifier c6 kernel: [drm] Initialized radeon 2.37.0 20080528 for 0000:00:01.0 on minor 0 c6 kernel: powernow-k8: Found 1 AMD A6-3600 APU with Radeon(tm) HD Graphics (4 cpu cores) (version 2.20.00) Log messages from booting into the CentOS 6.5 kernel: c6 kernel: [drm] radeon kernel modesetting enabled. c6 kernel: fb: conflicting fb hw usage radeondrmfb vs EFI VGA - removing generic driver c6 kernel: radeon 0000:00:01.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18 c6 kernel: radeon 0000:00:01.0: VRAM: 512M 0x0000000000000000 - 0x000000001FFFFFFF (512M used) c6 kernel: radeon 0000:00:01.0: GTT: 512M 0x0000000020000000 - 0x000000003FFFFFFF c6 kernel: [drm] radeon: 512M of VRAM memory ready c6 kernel: [drm] radeon: 512M of GTT memory ready. c6 kernel: platform radeon_cp.0: firmware: requesting radeon/SUMO_pfp.bin c6 kernel: platform radeon_cp.0: firmware: requesting radeon/SUMO_me.bin c6 kernel: platform radeon_cp.0: firmware: requesting radeon/SUMO_rlc.bin c6 kernel: radeon 0000:00:01.0: WB enabled c6 kernel: radeon 0000:00:01.0: fence driver on ring 0 use gpu addr 0x0000000020000c00 and cpu addr 0xffff8801b83aec00 c6 kernel: radeon 0000:00:01.0: fence driver on ring 3 use gpu addr 0x0000000020000c0c and cpu addr 0xffff8801b83aec0c c6 kernel: radeon 0000:00:01.0: radeon: using MSI. c6 kernel: [drm] radeon: irq initialized. c6 kernel: [drm] Radeon Display Connectors c6 kernel: [drm] radeon: power management initialized c6 kernel: fbcon: radeondrmfb (fb0) is primary device c6 kernel: radeon 0000:00:01.0: fb0: radeondrmfb frame buffer device c6 kernel: radeon 0000:00:01.0: registered panic notifier c6 kernel: [drm] Initialized radeon 2.30.0 20080528 for 0000:00:01.0 on minor 0 c6 kernel: powernow-k8: Found 1 AMD A6-3600 APU with Radeon(tm) HD Graphics (4 cpu cores) (version 2.20.00) c6 kernel: CPU0: AMD A6-3600 APU with Radeon(tm) HD Graphics stepping 00

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Fetchmail multiple instances increasing load average
by Anshul Chauhan 04 Jan '15

04 Jan '15

Hi, I’m running centos 5.7 with sendmail-8.13.8-8.1.el5_7, fetchmail-6.3.6-4.el5 and procmail-3.22-17.1.el5.centos. My server is having around 2000 mailboxes and this server used to fetch mails for all these users using fetchmail from the other MX server. I’ve configured the below cron job using webmin for downloading these mail 5,10,15,20,25,30,35,40,45,50,55 * * * * /etc/webmin/fetchmail/check.pl --file /var/log/fetchmaillog. But the load average for the server goes high automatically after every 4 to 5 hours due to multiple fetchmail instances and after that I’ve to either kill all the fetchmail jobs or restart the server for making the system up again. Kindly suggest how can i reduce this load average issue or any other way out for downloading the mails from the parent server running on sendmail again. Warm Regards, Anshul Chauhan

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Secret incantations for virt-viewer?
by Bill Gee 02 Jan '15

02 Jan '15

Hello everyone - I am trying to use virt-viewer to connect to KVM virtual machines running on a CentOS7 host. It works great when running directly on the host, but I have not been able to figure out the magic connection string to make it work from another computer. On the host, I set selinux to "permissive" and stopped the firewalld service. No change, so it is not related to them. Almost every command I try gives an immediate dialog box that says "Unable to connect to libvirt with URI ...". The only command line that gets me anything different is this: virt-viewer --connect xen+ssh://root@practice7.billgee.local/ dd2a2ba7-707d-42b5-8c83-94b11ce6e269 This will ask me for the root password on the host machine and then gives me the same "Unable to connect" message. I tried it with a regular user account instead of root and got the same result. I have tried it with and without the "root@" string. I tried using both the UUID and the domain name of the guest. I tried all of the following protocols: ssh:// qemu:// qemu:/// xen:// xen+ssh:// qemu_ssh:// qemu+ssh:// If I open a regular ssh shell using the +X parameter and then launch virt- viewer, it works. The connection string in that case is --connect=qemu:///system Any suggestions? Thanks - Bill Gee

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Happy New Year!
by Ljubomir Ljubojevic 01 Jan '15

01 Jan '15

On behalf of the CentOS project I wish you Happy New Year! Happy New Year! -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe StarOS, Mikrotik and CentOS/RHEL/Linux consultant

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Re: [CentOS] Design changes are done in Fedora
by Warren Young 31 Dec '14

31 Dec '14

On Dec 31, 2014, at 11:00 AM, m.roth(a)5-cent.us wrote: > Warren Young wrote: >> >> How many single computers have to be up 24/7? > > A hundred or more, here, individual servers, 24x7. I’m more interested in a percentage than absolute values. And I’m only interested in boxes that simply cannot go down for a bit of maintenance every now and then. As counterexamples, DNS, NTP, and SMTP servers are out, because these protocols were explicitly designed to cope with short temporary outages. > Home directory servers, > backup servers, compute nodes, some of which have jobs that run for days, > or a week or two, and that's not counting the clusters that do the same... > and mostly dump the data to home or project directories. That’s all possible to work around. Home servers: SAN design points the way. Backup servers: Ditto if you mean home directory mirrors. If you mean hot failover nodes in a cluster, I already pointed out that clusters let you upgrade via temporary partitioning. Compute nodes: I didn’t ask how many boxes you have that share the same 9/5/180 usage pattern of our customers. I asked how many you have that must run 24/7/365 or Bad Things happen. When a job that’s been running for 2 weeks finishes, there’s your maintenance window. Take it if you need it, let it go if you don’t.

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X11 console
by Andreas Benzler 31 Dec '14

31 Dec '14

Hello Guys… I need to revert the X11 graphical server to Console 7. and enable VT1 as normal text as it was on the old distr.. Sincerely AndyBe

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CentOS 6.6 - net-snmp process - Too many open files
by Laurent Dumont 31 Dec '14

31 Dec '14

Hi gents, I have a CentOS 6.6 install with net-snmp running. I'm using SNMPv3 Auth and Encryption with Observium polling devices every five minutes. On one of my Centos server, the net-snmp process will die after 24-36 hours of running. It seems to be hitting my system maximum file open limit which is set to 1024. > [root@mail net-snmp-5.7]# ulimit -n > 1024 That number will keep increasing till it trips the 1024 limit. > [root@mail ~]# lsof -p 26907 | wc -l > 1071 > [root@mail net-snmp-5.7]# lsof -p 26907 > snmpd 26907 root 166r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 167r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 168r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 169r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 170r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 171r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 172r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 173r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 174r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 175r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 176r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 177r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 178r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > snmpd 26907 root 179r REG 0,3 0 4026532160 > /proc/26907/net/sctp/snmp > #tail /var/log/snmpd.log > cannot open /proc/net/dev ... > /proc/partitions: Too many open files > /proc/stat: Too many open files > /proc/partitions: Too many open files > /proc/stat: Too many open files > could not create socket > /proc/partitions: Too many open files > /proc/stat: Too many open files > cannot open /proc/net/dev ... > /proc/partitions: Too many open files > /proc/stat: Too many open files > /proc/partitions: Too many open files > /proc/stat: Too many open files It seems that CentOS is frozen to net-snmp 5.5 and I'm don't really want to use anything that I can't easily manage with "yum". The weird thing is that I have another server with the same config/CentOS version/Net-Snmp version and I have no issues with the snmp process on that server. I could raise the open file limit but that just seems unnecessary since I don't think that snmp is supposed to work that way. Anything else I could try to troubleshoot the issue? Thanks!

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Re: [CentOS] can't enable selinux CentOS 6.5
by James B. Byrne 31 Dec '14

31 Dec '14

On Tue, December 30, 2014 03:18, Digimer wrote: > What possible reason could they have for that? > > On 30/12/14 02:17 AM, Laurent Dumont wrote: >> By any change, is it a VPS? I know that my CloudAtCost (very cheap but >> extremely unreliable provider) prevents you from using SeLinux on their >> Centos image. No mysterious breakages == lower support costs. The same reason MicroSoft shipped everything on and open for years and thereby built up the malware industry from scratch. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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sound oddity on C6
by Fred Smith 31 Dec '14

31 Dec '14

I just encountered an oddity... it may have been this way for millennia :) but somehow I've never noticed it before... say I'm using X (which is pretty normal these days) and I have VLC playing a "radio" station. I do CTRL-ALT-Fx to switch to a text console THAT HAS NO ONE LOGGED IN on it, and voila: no sound! as soon as I log in, the audio returns. what gives here? -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- "For the word of God is living and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart." ---------------------------- Hebrews 4:12 (niv) ------------------------------

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Discuss December 2014