Discuss June 2015

discuss@lists.centos.org

157 participants
172 discussions

Memory vs. Display Card
by Rick 28 Oct '25

28 Oct '25

Since memory has become quite cheap lately I decided to move from 2 GB to 6. When I installed the memory every thing was fine until I went to run level 5. At that point the screen turned to garbage and the system froze. Is there a way to fix this so I can use the memory I bought? Do I need a new display card? Current hardware: Intel D975XBX2 Motherboard VGA compatible controller: ATI Technologies Inc RV505 [Radeon X1550 64-bit] -- http://www.spinics.net/lists/

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SSD for Centos SWAP /tmp & /var/ partition
by Keith Roberts 03 Sep '25

03 Sep '25

Has anyone actually used a SSD in a Centos setup? My little experiment with a s/h WD drive for /tmp and SWAP partitions kicked the bucket on Wednesday, when the poor WD drive caught the click-of-death. It was a s/h drive to start with and lasted about 4 months. But that was without the /var/log/ partition being written to it, as I mounted that back onto /var/log from the original drive. So I had to install another (WD) drive, and repartion it and rebuild my RPM package database, from the backed-up Packages file. That seems to be all OK now. I'm wondering if it would be a good idea to use a new SSD for moving all the disk i/o to, that Linux likes to do so often. Plus putting SWAP onto a decent SSD should speed things up somewhat. Here's a short video of a laptop fitted with a SSD drive booting macOS, compared to a similar laptop booting from the standard HDD. The laptop with the SSD boots and loads some apps in 28 seconds. The other one takes twice as long. http://eshop.macsales.com/shop/SSD/OWC/Mercury_Extreme_Pro_6G/?utm_source=t… Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------

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LUKS encypted partition using --key-file can only be decrypted with --key-file
by Digimer 15 Sep '15

15 Sep '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, I created a LUKS encrypted partition via a udev-triggered script on 6.6 using --key-file /tmp/foo. This worked fine, and I can decrypt the LUKS partition via script and manually using --key-file with luksOpen. The odd problem is that I can't decrypt the partition using the prompt. If I manually create a file with the passphrase in it and then point to it with --key-file, it decrypts fine. I used 'cat -A /tmp/foo' to verify that there was no '\n' at the end of the phrase. Is this expected behaviour? That is; If you create an encrypted partition using --key-file, you always decrypt with the same? If so, I can't understand the logic... If not, then I am not sure what I am doing wrong. Thanks for any insight! digimer - -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJU93ZLAAoJECChztQA3mh0swwP/2PX3Y3TmEEIeN7WxWQjnbX0 B+hdp3Yk1PBqaQ/FsOzGsnKnxOUu73fB25gDksEWnNedBru4ayJuYPW644rH8Ivr fS8Pz3y6buGqUaggzsGNaGfDOKtiLOp722OeuPUmaNHnGCE3qJbhE3RKBRrMl4SP Yi/otL8+85cp4isMESOYs3F5qw/osDmmKxktPbULbTrne94EWHHl+9RoSFDZFNCj JBsNE122WUtn+2JPV8it8nlIS/Kzqzv3qGR88lYiBj3y3F+zIbpix/8wyCgRVSw6 /LQwLSTmGKYdvLw2Td7oIqMrW69ZsgujAonnbyx2nl9WN3KSqr799SxL4n2M7ZOj a1MjcLdLr0kM28eu+/A3LyHQRkBVsz7f27e7M+drEVa4OHFS3KuL4EM47xkTGyps veljkNmZ8elL7PX+dmWsVGYyo4XH/bTFDcW8ZLhr+bc55xLplMRrhPNNFGQ+5k3R ev7HRhSqHD9Ub39KTea4WCJOsm0hJJgKYneWYmQJ1aVYmrFMHLJaJBzCqU+W751O GkXvU24eoajNKnIAcY9wrC/WzVru8dM2JwBefcatxCsWFhpcpSyrh0zhCAiZKOga hjskIq/54Il8YyzSVy5Xvwv8WACBUwoiPv6ZqVm3oKRkoZI3E14vVYTcG+b0cPqn S30qAHntsjFA70Hpedt5 =YYFB -----END PGP SIGNATURE-----

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SAMBA as AD DC
by Sergio Belkin 11 Sep '15

11 Sep '15

Hi folks, Is able SAMBA on CentOS 7 to work as Active Directory Domain Controller? If it's not, what is the recommended way of doing? Compiling from sources? Install packages from SerNet? Thanks in advance! -- -- Sergio Belkin http://www.sergiobelkin.com LPIC-2 Certified - http://www.lpi.org

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How to setup own i686 buildenv for CentOS7
by Robin Lee 07 Sep '15

07 Sep '15

Hi, all! How to setup own i686 mock for CentOS7? Or, is there any public i686 repo for CentOS7? I found i686 repo available in internal CentOS building environment, from a root.log from a mock build result[1]. [1] http://buildlogs.centos.org/c7-updates/glibc/20141218212615/2.17-55.el7_0.3… Cheers, -robin

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whois command in c6
by John R Pierce 09 Aug '15

09 Aug '15

the whois command in c6 references whois.v6nic.net for ip addresses in the 43.0.0.0/8 range (and maybe others). v6nic is no longer a valid whois server, any nets delegated to it should instead be delegated to apnic. i have no upstream connections... this change was made in the generic sources for jwhois some time ago I see this fix was introduced in F20 here, https://bugzilla.redhat.com/show_bug.cgi?id=1121512 -- john r pierce, recycling bits in santa cruz

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centos 7.1 and compiz
by Wes James 17 Jul '15

17 Jul '15

I have compiz installed on centos 6.6, and I’ve been testing 7.1, but I can't find any info on installing compiz on 7.1. Is there any info for this or is it not supported yet? Thanks, -wes

3 10

CentOS 7 + Dell Latitude E6420 laptop = thermal shutdown
by deoten 13 Jul '15

13 Jul '15

Hi, Thanks for reading this. I installed CentOS 7 (tried the latest ISO image and the previous build) on the laptop and got to the point where I am logging into the desktop environment and the laptop just shuts down. I check the event log in BIOS and find that a thermal event has occurred and the system powered off to prevent damage. I can take the same laptop with Windows 7 installed and run graphically intensive tests for an hour solid and it doesn't lock up. I installed Ubuntu 15.04 and that seemed solid too. Is this a known issue with CentOS 7? Should I be using a particular boot option? It does not seem to matter whether Gnome or KDE is chosen as the desktop environment. Any help you can provide is appreciated. Thanks.

10 17

PXE question
by isdtor 13 Jul '15

13 Jul '15

I was wondering, where is the format and options of files like /usr/share/system-config-netboot/pxelinux.cfg/default from system-config-netboot-cmd described? There are plenty of PXE tutorials with examples out there, but nothing that looks like actual documentation.

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Re: [CentOS] puppet files denied by SELinux
by Tim Dunphy 12 Jul '15

12 Jul '15

Hi all, Thanks for all your suggestions. Here's where I'm at with this. Can you give details about your puppetmasterd setup ? it seems that > you're using Foreman as puppet ENC. > Yes, I'm on foreman 1.7.4 and puppet 3.75. You are correct that I'm using foreman, sorry I hadn't thought to mention it! > Foreman works fine with selinux enabled : that's what we use for the > centos.org infra :-) > Which version of puppet/foreman are you using ? Note that foreman has > the foreman-selinux package that is used to automatically tune > contexts and booleans needed for this. > You can still reapply those settings with > /usr/sbin/foreman-selinux-{disable,enable,relabel} > There is no need to recompile a custom selinux policy for > foreman/puppet those days > I didn't recompile any custom selinux policies. All I did to try to resolve the issue is to consult audit2allow and install the module it suggested. I did try running /usr/sbin/foreman-selinux-enable but that didn't seem to have an effect. Knowing nothing of your scenario, look at the source and target context. > > Looks like you copied a crt from an nfs location and you don't have a > file context defined to transition labels, maybe something like: > > semanage fcontext -a -t passenger_t "/etc/puppet/environments(/.*)?" > > However, I know nothing of puppets selinux infrastructure, you may need > a more applicable type. > > In these cases, audit2allow can't possibly guess the right thing and will > certainly produce a rule that is either unsafe or simply wrong. > You are correct that I copied the key and cert from an NFS share! Both the puppet server and the monitor1 client share the same /home directory via NFS. Pretty cool that you picked up on that! I do suspect you're probably right that this may be causing the problem. Just on a hunch, I tried copying the certs and keys from the montior1 host over to the puppet host to the /tmp directory on the puppet server. That leaves out NFS altogether. And when I do that, my bacula puppet module WORKS!! Puppet doesn't complain at all! But if I check out another host where I copied the cert and key from the NFS home directory I still get the error: Error: /Stage[main]/Bacula::Config/File[/etc/pki/tls/private/monitor2.mydomain.com.key]: Could not evaluate: Could not retrieve information from environment production source(s) puppet:///modules/bacula/monitor2/monitor2.mydomain.com.key Error: /Stage[main]/Bacula::Config/File[/etc/pki/tls/certs/monitor2.mydomain.com.crt]: Could not evaluate: Could not retrieve information from environment production source(s) puppet:///modules/bacula/monitor2/monitor2.mydomain.com.crt Also when I try to set context using the line you suggested I get an error: #semanage fcontext -a -t passenger_t "/etc/puppet/environments(/.*)?" ValueError: Type passenger_t is invalid, must be a file or device type So I googled around and found what seems to be the correct syntax: semanage fcontext -a -t passenger_exec_t "/etc/puppet/environments(/.*)?" Because when I applied that line, I didn't get any errors or complaints. However the problem still existed on the monitor2 host which had the key pair copied from the NFS share. So in summary it appears that there is some interaction between SELinux and NFS that is causing the issue. Any thoughts? Thanks, Tim On Sun, Jun 21, 2015 at 11:09 AM, Tim Dunphy <bluethundr(a)gmail.com> wrote: > Yes, you did when you used the audit2allow with the -M option argument >> of "puppet", which is confirmed by the command you issued to try to load >> it "semodule -i puppet.pp" (which you stated in your original message). >> I'm okay with you asserting otherwise and not following my first >> suggestion -- my second is to use a totally different name, e.g., "barf" >> and thus "semodule -i barf.pp". > > > Haha!! Ok man. I get you now. Thanks. Also I meant to send this to the > list.. Whoops! I'll try doing it again with something like 'my' in the > front. I remember having a similar problem with Zabbix last week that I > solved this way. > > On Sun, Jun 21, 2015 at 12:19 AM, Mark Milhollan <mlm(a)pixelgate.net> > wrote: > >> On Sat, 20 Jun 2015, Tim Dunphy wrote: >> >I wrote: >> >> >> That suggests there's already a module named puppet, and thus you are >> >> replacing it with the one you made which does not supply the >> >> puppet_var_lib_t type. Always prefix your own modules with something >> >> that makes them almost certain to be unique, e.g., yourdom_puppet. >> >> >> > >> >No, actually I didn't compile my own selinux module. :) Not sure how you >> >got that idea, but that is not the case. >> >> Yes, you did when you used the audit2allow with the -M option argument >> of "puppet", which is confirmed by the command you issued to try to load >> it "semodule -i puppet.pp" (which you stated in your original message). >> I'm okay with you asserting otherwise and not following my first >> suggestion -- my second is to use a totally different name, e.g., "barf" >> and thus "semodule -i barf.pp". >> >> >> /mark >> > > > > -- > GPG me!! > > gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B > > -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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Discuss June 2015