Discuss November 2017

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105 participants
101 discussions

Kickstart ksdevice question
by Mark Haney 03 Nov '17

03 Nov '17

This should be easy to answer (I hope). We routinely kickstart boxes to use for managing our customers RADIUS/DHCP configurations (along with other things). We've had a C7 kickstart in place since I built one in May and are finally starting to roll it out for new installations. But, I'm curious as to what ksdevice= actually does. With the C6 we routinely used ksdevice=eth0 since we ship boxes with two NICs and knew interface 1 was always eth0. With C7 comes the interface naming convention changes and that's where questions have arisen about that option. It's been set as ksdevice=eno1 since I know these servers name the interfaces with the eno# convention (integrated dual-port). A coworker of mine insists on setting it ksdevice=enp2s0 which doesn't seem to work like it should (though, it could be a fault netinstall image, I'm not sure yet). In all honesty, we'd prefer to keep the eth# convention for C7 like C6. So, my question is, does setting ksdevice=eth0 dictate to the system the names of the interfaces? Is that just a name for the install process and the kickstart script assigns names? (We have the kickstart script setting them as eno1 and eno2, btw.) I've googled this to no end and haven't found a satisfactory answer. So, I'm hoping someone with more KS experience than I can explain it. -- Mark Haney Network Engineer at NeoNova 919-460-3330 option 1 mark.haney(a)neonova.net www.neonova.net

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/usr/bin/x0vncserver large blocks on screen at times
by Jerry Geis 03 Nov '17

03 Nov '17

I use this vnc program to remote into my station. (C 7.4) When I do, about every 5 to 10 seconds a big solid block appears on my screen. About six inches long and 3 inches wide. it quickly then goes away. I use the realvnc.com viewer when I do this. Is there some setting that would help with this ? Jerry

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anaconda not installing to sda?
by Christopher Wood 03 Nov '17

03 Nov '17

I'm having what appears at first glance to be a kickstart+anaconda issue on CentOS 7.4. As near as I can tell in the program.log in the anaconda environment, the partitioning instructions downloaded with the kickstart from cobbler appear to simply not be applied. Then /mnt/sysimage is not mounted, the logs are not copied to /mnt/sysimage/root and the installation stalls due to the anamon checking. (Also anaconda is trying to e2fsck /dev/loop devices which is puzzling.) If anybody has hints about what I would double-check or if you've resolved a similar issue I would be quite interested. More details: I see the same behaviour after cutting most items out of the cobbler kickstart template, however I confirm that /run/install/ks.cfg in the anaconda environment has the following: ignoredisk --only-use=sda zerombr bootloader --location=mbr clearpart --all part / --label="/" --fstype=ext4 --grow --asprimary program.log from the anaconda environment is here: https://gist.github.com/christopherwood/72f390d7e5788b9bc9e841d40c926895 The system does boot and install just fine from the CentOS 7.4 iso without being kickstarted. This is on vmware (esxi 6.0), I've tried with the paravirtual and lsi logic scsi controllers with the same result. I've tried different previously (CentOS 7.3) working cobbler profiles that do not work with 7.4 now. If I change the drive name (sda) to a ludicrous value anaconda simply errors, so at some level it's understanding about sda.

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Repository with current FreeTDS?
by Adam Tauno Williams 03 Nov '17

03 Nov '17

Anyone know of a repository with the current - 1.0 - version of FreeTDS? The packaged version 0.91 from EPEL is considerably out of data. -- Meetings Coordinator, Michigan Association of Railroad Passengers 537 Shirley St NE Grand Rapids, MI 49503-1754 Phone: 616.581.8010 E-mail: awilliam(a)whitemice.org GPG#D95ED383 Web: http://www.marp.org

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Semi-OT: a docker log question
by m.roth＠5-cent.us 03 Nov '17

03 Nov '17

Hi, folks, Is there *any* way, other than writing my own logging driver, to get the docker daemon to write to its very own file, like, say, /var/log/docker, so that it doesn't spew crap into /var/log/messages? Thanks in advance. mark

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PHP package versions
by Gregory Orange 03 Nov '17

03 Nov '17

Hi everyone, http://php.net/eol.php says that PHP 5.5 and 5.4 are EOL, but a freshly installed Centos 7 box, then fully upgraded, gives me PHP 5.4.16-42.el7. What do people do about maintaining current versions of software on a variety of machines? We have some users who manage their own machines, and would rather not force them to jump through hoops of managing repos to get later versions. I just hope I've missed something straightforward, and that someone here can offer advice. TIA, Greg.

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Centos and xen network bridge issue
by Scott Gennari 02 Nov '17

02 Nov '17

Hi All, We have a single Centos 5.11 server running a xen hypervisor that went down hard after an extended power outage this weekend. I'm mostly familiar for KVM as that is the majority of what our guests run under and have tried getting up to speed on xen bridging to no avail. The problem is that after the xen server spun back up, the previously defined xen bridges were lost. I've been going in circles and am seeking advise on to how to restore them. I found the bridge interfaces defined in /etc/xen/scripts/network-bridge-pcl, this is what I am trying to restore. Logs/configs files are posted below. There are two guests running, one uses 'xen-dmz1' and the other 'xen-dmz2' I created 'xenbr3' somehow with an interface named after one of the guests. The server will be retired shortly. Any help would be greatly appreciated. Thank you, Scott /etc/xen/scripts/network-bridge-pcl #/bin/sh dir=$(dirname "$0") "$dir/network-bridge" "$@" vifnum=1 netdev=eth2 bridge=xen-dmz2 "$dir/network-bridge" "$@" vifnum=3 netdev=eth0 bridge=xen-dmz1 ====== #brctl show bridge name bridge id STP enabled interfaces virbr0 8000.000000000000 yes xenbr3 8000.feffffffffff no guestname vif0.3 peth3 ====== #ifconfig -a eth0 Link encap:Ethernet HWaddr 00:22:19:5E:F9:F8 inet6 addr: fe80::222:19ff:fe5e:f9f8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:100820 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:9736214 (9.2 MiB) TX bytes:492 (492.0 b) Interrupt:24 Memory:ce000000-ce012800 eth1 Link encap:Ethernet HWaddr 00:22:19:5E:F9:FA inet6 addr: fe80::222:19ff:fe5e:f9fa/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:33304 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2559435 (2.4 MiB) TX bytes:492 (492.0 b) Interrupt:25 Memory:d0000000-d0012800 eth2 Link encap:Ethernet HWaddr 00:22:19:5E:F9:FC inet6 addr: fe80::222:19ff:fe5e:f9fc/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:46169 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2954816 (2.8 MiB) TX bytes:492 (492.0 b) Interrupt:26 Memory:d2000000-d2012800 eth3 Link encap:Ethernet HWaddr 00:22:19:5E:F9:FE inet addr:10.30.2.20 Bcast:10.30.2.255 Mask:255.255.255.0 inet6 addr: fe80::222:19ff:fe5e:f9fe/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1092768 errors:0 dropped:0 overruns:0 frame:0 TX packets:993657 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:136283932 (129.9 MiB) TX bytes:183732069 (175.2 MiB) eth4 Link encap:Ethernet HWaddr 00:10:18:56:73:D0 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:28 Memory:d6000000-d6012800 eth5 Link encap:Ethernet HWaddr 00:10:18:56:73:D2 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:29 Memory:d8000000-d8012800 eth6 Link encap:Ethernet HWaddr 00:10:18:56:73:DC BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:30 Memory:da000000-da012800 eth7 Link encap:Ethernet HWaddr 00:10:18:56:73:DE UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:31 Memory:dc000000-dc012800 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:32 errors:0 dropped:0 overruns:0 frame:0 TX packets:32 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:5951 (5.8 KiB) TX bytes:5951 (5.8 KiB) peth3 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:1132794 errors:0 dropped:0 overruns:0 frame:0 TX packets:1000019 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:146054455 (139.2 MiB) TX bytes:188561087 (179.8 MiB) Interrupt:27 Memory:d4000000-d4012800 guestname Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:4155 errors:0 dropped:0 overruns:0 frame:0 TX packets:100856 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:530960 (518.5 KiB) TX bytes:10863800 (10.3 MiB) sit0 Link encap:IPv6-in-IPv4 NOARP MTU:1480 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth1 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth2 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth4 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth5 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth6 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth7 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth8 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth9 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) veth10 Link encap:Ethernet HWaddr 00:00:00:00:00:00 BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.2 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.3 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:993721 errors:0 dropped:0 overruns:0 frame:0 TX packets:1092813 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:183747013 (175.2 MiB) TX bytes:136286954 (129.9 MiB) vif0.4 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.5 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.6 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.7 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.8 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.9 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) vif0.10 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) xenbr3 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF UP BROADCAST RUNNING NOARP MTU:1500 Metric:1 RX packets:97810 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:9282152 (8.8 MiB) TX bytes:0 (0.0 b) ====== network-scripts]# cat ifcfg-eth0 ifcfg-eth2 # Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet DEVICE=eth0 BOOTPROTO=static HWADDR=00:22:19:5E:F9:F8 ONBOOT=yes # Broadcom Corporation NetXtreme II BCM5709 Gigabit Ethernet DEVICE=eth2 BOOTPROTO=static HWADDR=00:22:19:5E:F9:FC ONBOOT=yes

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Re: [CentOS] NoScript allow scripts globally reversible?
by James B. Byrne 02 Nov '17

02 Nov '17

On Wed, November 1, 2017 10:51, Michael Hennebry wrote: > > I'm running NoScript because otherwise Firefox freezes up a lot. > Recently I've had difficulty accessing a site. > I suspect the reason is that it uses redirection in a way that > frustrates my efforts to give it permission. > To test the notion, I'm considering temporarily allowing script > globally. > How hard is it to reverse? > Will I need to redo previous permissions one at a time? > The way I handle this is by creating a special profile which has no extensions or security settings. Inside your desktop manager open a terminal session and run 'firefox -P --no-remote' The no-remote option opens a new Firefox window and session whether or not you already have one running. Then press 'Create Profile', give it a name, and use that whenever you get into a Firefox / Extensions conflict on a particular web site. I have my Firefox panel launcher set up to use 'firefox -P --no-remote' always. Tthis allows me vastly more flexibility dealing with multiple websites at the price of a trivial delay during the browser start-up. This problem is the result of recent changes made to the extensions interface. I can hardly wait to see what is broken with v57. -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail 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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NoScript allow scripts globally reversible?
by Michael Hennebry 01 Nov '17

01 Nov '17

I'm running NoScript because otherwise Firefox freezes up a lot. Recently I've had difficulty accessing a site. I suspect the reason is that it uses redirection in a way that frustrates my efforts to give it permission. To test the notion, I'm considering temporarily allowing script globally. How hard is it to reverse? Will I need to redo previous permissions one at a time? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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Problems with kernel-3.10.0-693.5.2.el7.x86_64
by Gregory P. Ennis 01 Nov '17

01 Nov '17

Everyone, I have two desktop units with : Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz that do not allow the login screen to appear after the update of : kernel-3.10.0-693.5.2.el7.x86_64 and kernel-3.10.0-693.2.2.el7.x86_64 Both of these units worked properly with kernel.x86_64 3.10.0-514.26.2.el7 I am not sufficiently familiar with grub to know if the problem is related to grub or related to the kernel. I have been able to boot the machines by the use of kernel.x86_64 3.10.0-514.26.2.el7. When using kernel-3.10.0-693 the login screen is blank and the login prompt is missing, however each machine is accessible via the terminal interface, or remotely with ssh. Does anyone have any ideas ? Greg

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Discuss November 2017