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This is a read-only archived version of wiki.centos.org


Centbot is a supybot-limnoria instance connected to the Libera Chat IRC network to assist in supporting the CentOS IRC community.

Centbot recognizes several command 'triggers' to answer some of the more frequently asked questions that may occur in the channel.

Centbot functions by watching the various channels it is on and looking for these triggers and then displaying the information when it detects one. For example if you wanted to see the End Of Life date for the CentOS-6 release you could send


to the channel and centbot will reply with the EOL date along with the time remaining until that date is reached.

The list of triggers is constantly in flux with more triggers being added on a continuing basis. An up-to-date list of the current triggers is available by privately querying the bot:

/msg centbot @listaliases

You will note the more messages text at the end of the list; this indicates that the bot has more information to display but will wait until asked to do so. This can be accomplished by:

/msg centbot @more

This can be repeated until all the information is displayed.

To see what an individual trigger will display you can send it privately:

/msg centbot @c6eol

Suggestions of additional triggers to be added or updates to the existing set of triggers may be addressed to any of the IRC nicks listed via:

/msg centbot @botstaff

For user convenience we include a snapshot of known triggers in the following table. This table is automatically generated daily.

Current List Of Centbot Triggers

Known Centbot Aliases As Of March 02, 2023
Trigger Resulting Output
about For a more in-depth description of both CentOS the product and CentOS the project please see https://www.centos.org/about/ and https://wiki.centos.org/FAQ/General
abrt For more information on the Automatic Bug Reporting Tool (abrt) please see https://wiki.centos.org/TipsAndTricks/ABRT
alias aka $*
alias list aka list --keys
alis For assistance with finding channels on freenode you can go ask alis. /msg alis help for more information.
altarch For more information on the AltArch efforts please see https://wiki.centos.org/SpecialInterestGroup/AltArch
amazonlinux #centos is unable to assist with Amazon Linux as it is a completely different distribution. For Amazon Linux support please contact Amazon support. ##aws may be able to assist with some issues as well.
announcements For update notifications you are advised to join the centos-announce mailing list. You can configure which releases and architectures you want updates for via the mailing list config web page. Please see https://wiki.centos.org/GettingHelp/ListInfo for more information on this and other mailing lists.
appstream For information on the Life Cycles and Support policies for AppStream content please see https://access.redhat.com/support/policy/updates/rhel8-app-streams-life-cycle. Note that CentOS follows the upstream support model with the exception we do not provide extended support for EOL releases.
apt Red Hat have an apt->dnf info page on https://www.redhat.com/sysadmin/dnf-apt-users
arm The #centos-arm channel exists for people interested in the CentOS ARM platform.
arp ifconfig $*
ask Instead of asking to ask, please just state your problem clearly and concisely. If someone is available to assist you they will.
atomic We strongly advise against the use of the Atomic Rocket Turtle repo, aka atomic or art; it replaces core packages and can, does and will cause stability issues with CentOS systems.
atrpms The atrpms repository is effectively abandoned and should _not_ be used. Use alternative package sources such as epel, nux-dextop, etc. Please see https://wiki.centos.org/AdditionalResources/Repositories for a list of community vetted repositories.
atsign The use of '@' in addressing people on IRC breaks many clients with the result that such clients will not properly highlight their nick when they are being addressed. If you want to ensure you get someones attention you should not use '@'.
audit2allow You can find info about how to create your own policy from the event log in permissive mode on https://wiki.centos.org/HowTos/SELinux#Creating_Custom_SELinux_Policy_Modules_with_audit2allow
away We would greatly appreciate it if you would disable your client's automatic /away functionality while in this namespace. This also includes away nick changes or nick changes indicating status. The nature of IRC makes such status changes irrelevant and just adds to channel noise. Thank you for your understanding.
aws For a list of Amazon AMI ids for CentOS images please see https://www.centos.org/download/aws-images/
backport backports $*
backporting backports $*
backports Please see https://access.redhat.com/security/updates/backporting/ for information on backporting of security fixes and features in CentOS and RHEL. Additionally https://access.redhat.com/solutions/2074 may also be of use.
badadvice Bad advice is bad. It is a disservice to the user and it is an additional support burden for someone to have to clean up after you. Please think about the advice you give and ensure that it is correct before you set someone on the wrong path.
banned If you find yourself banned on any of the #centos channels please see https://wiki.centos.org/irc/banned
bash For links to various resources for the bash shell please see https://mywiki.wooledge.org/
beginners There is a new channel devoted to beginner questions and support issues with Enterprise Linux distributions and where new users may feel more at home. If interested please /join #el-beginners
beta As a general rule the CentOS Project does not issue beta or RC releases for upcoming releases.
board For a list of the current members of the CentOS Board please see https://www.centos.org/about/governance/#current-sitting-board
boothole The updated packages for the recently disclosed BootHole vulnerability are available. Use shim-x64-15-15.el8_2.x86_64.rpm ( EL8 ) / shim-x64-15-8.el7_8.x86_64.rpm ( EL7 ) or newer to avoid systems becoming non-bootable. Also read https://bugs.centos.org/view.php?id=17668 if using TPM . See https://access.redhat.com/solutions/5272311 for details.
bootoptions7 The list of options that can be passed to the CentOS 7 installer are at https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/installation_guide/chap-anaconda-boot-options
botstaff Centbot is owned by the CentOS project with Evolution acting as project sponsor. Day to day management and operation of the bot is provided by Bahhumbug, pj, sixy, TrevorH, wolfy and Zathrus; any of whom may be contacted regarding issues with the bot.
brokenserver Please see https://wiki.centos.org/TipsAndTricks/BrokenVserver for more information on problematic providers and vendors
btrfs btrfs is now fully deprecated in CentOS. The tech preview which is available in CentOS-7 will receive no future updates and btrfs is not available at all in CentOS-8. btrfs was only a tech preview and should not have been used in production services.
bug bugreport $*
bugreport bugs $*
bugs For information on filing bugs against CentOS Linux or CentOS Stream please see https://wiki.centos.org/ReportBugs
bugzilla bz $*
bz bugzilla bug $1
c2eol CentOS-2 went EOL on 30 September, 2009 ([elapsed [ until 2009-09-30 23:23:59 ] ]) and content moved to http://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.
c3eol CentOS-3 went EOL on 31 October, 2010 ([elapsed [ until 2010-10-31 23:23:59 ] ]) and content moved to http://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.
c4eol CentOS-4 went EOL on 29 February, 2012 ([elapsed [ until 2012-02-29 23:23:59 ] ]) and content moved to http://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.
c5eol CentOS-5 went EOL on 31 March, 2017 ([elapsed [ until 2017-03-31 23:23:59 ] ]) and content moved to http://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.
c6eol CentOS-6 went EOL on 30 November, 2020 ([ elapsed [ until 2020-11-30 ] ]) and content moved to http://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.
c79 RHEL 7.9 was released 2020-09-29 and CentOS 7.9 is also released. Run yum update to get it.
c7awshostname For more information on changing hostname on an AWS AMI instance please see https://forums.aws.amazon.com/message.jspa?messageID=560446
c7eol CentOS 7 will go EOL on 30 June, 2024 -- in [ elapsed [ until 2024-06-30 ] ]
c8 centos8 $*
c8content As of January 31st, 2022 CentOS-8 content, including SIG content that was not being built against RHEL, has been removed from the mirror network and moved to https://vault.centos.org - please see https://lists.centos.org/pipermail/centos-devel/2022-January/120120.html for more detailed information.
c8devel If you find you are unable to locate -devel packages after looking in the base, appstream, powertools, and devel repos please open a ticket at https://bugs.centos.org against the CentOS-8 project and _unreleased_devel_pkgs category and mentioning your need for it in the description field.
c8eol CentOS-8 went EOL on 31 December, 2021 ([ elapsed [ until 2021-12-31 ] ]) and content has been moved to https://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.
c8packages CentOS-8 is still new and not many third-party packages are currently available. If you find a package you are accustomed to using in CentOS-7 is not yet available for CentOS-8 you need to ask your packaging source to make it available for CentOS-8; we have no control or influence over external repositories.
c8s noise $*
c8sbugs File tickets against reproducible CentOS Stream bugs at https://bugzilla.redhat.com/enter_bug.cgi?product=Red%20Hat%20Enterprise%20Linux%208&version=CentOS%20Stream
c8seol cs8eol $*
cciss For assistance with getting a HP SmartArray or any other device needing the 'cciss' driver working properly on CentOS-7 please see https://lists.centos.org/pipermail/centos-docs/2015-September/005795.html for more information.
centbot For more information on this instance please see https://wiki.centos.org/irc/Centbot
centos2 CentOS 2 was released in May 2004 and was supported until September 2009. Packages can still be found at http://vault.centos.org however we encourage you to upgrade.
centos3 CentOS 3 was released in March 2004 and was supported until October 2010. Packages can still be found at http://vault.centos.org however we encourage you to upgrade.
centos4 CentOS 4 was released in March 2004 and was supported until February 2012. Packages can still be found at http://vault.centos.org however we encourage you to upgrade.
centos5 CentOS 5 was released in April 2007 and was supported until March 2017. Packages can still be found at http://vault.centos.org however we encourage you to upgrade.
centos6 CentOS 6 was released in July 2011 and was supported until November 2020. Packages can still be found at http://vault.centos.org however we encourage you to upgrade.
centos7 CentOS 7 was released in July 2014, and is supported until June 2024
centos8 CentOS 8 was released on 24th Sept 2019 and is supported until the end of 2021
centos9 Really?
centosannounce announcements $*
centoseol The CentOS Project goes EOL on 30 June, 2024 -- in [ elapsed [ until 2024-06-30 ] ]
centoswebpanel The product known as 'CentOS Web Panel' is not associated with the CentOS Project, nor is it recommended for use by this channel or the CentOS Project. Additionally there is a concern of possible Rights Infringement by the non-authorized use of the CentOS Marks. Users are strongly cautioned against the use of the product.
cherrypicking updates $*
choices There are various rebuilds of RHEL 8+ including Rocky - #rockylinux, Alma - #almalinux, and OEL - #oracle-linux. Or RHEL has a 16 instance free developer license. There is also CentOS Stream which isn't a one-for-one rebuild and has support in #centos-stream
cityfan The 'cityfan' repo is known to be problematic and you are _strongly_ discouraged from using it. See https://wiki.centos.org/AdditionalResources/Repositories for more information.
clearos ClearOS is _not_ CentOS and thus can not be supported in this venue. Please seek assistance from their support venues.
cloud We are aware of the delay in the timely release of the various CentOS cloud images. Unfortunately at this time we do not have an accurate ETA on these images being made available.
cloudlinux If you have installed CloudLinux on your CentOS system then it is no longer CentOS and you need to ask the Cloudlinux folks for future support.
clustering For assistance with linux-based clustering you may find you get better results if you ask in either #linuxcluster or #clusterlabs
community #el-community is a channel for those wishing to connect with other people in the Enterprise Linux community. It is open to anyone who identifies with RHEL or any of it's derivative distributions (RHEL, CentOS, CentOS Stream, Rocky Linux, Alma Linux, Oracle Linux, Springdale Linux, etc).
contribute More information for those wishing to contribute to the CentOS Project can be found at https://wiki.centos.org/Contribute
cpan Using CPAN on CentOS is a wonderful way to wreck your system. CPAN does not play nicely with the packaging system. Please use EPEL or other trusted repos to install packaged PERL modules. Please see https://wiki.centos.org/AdditionalResources/Repositories for more information on 3rd-party repos.
cpanel We are not able to support either cpanel or the boxes that it is installed upon here due to the many changes that this application makes to the base OS. Please ask in #cpanel here on freenode (/join #cpanel) or see https://documentation.cpanel.net/display/CKB/How+to+Open+a+Technical+Support+Ticket to open a ticket.
cpaste paste $*
cr For information on the Continuous Release repository please see https://wiki.centos.org/AdditionalResources/Repositories/CR
crb powertools $*
crossposting We would appreciate it if you would not cross-post questions to multiple channels. Many of us are on the other channels you're posting to and it's annoying and you will find many will be less than helpful as a result.
crystal It would help us better assist you if you would explain, in as much detail as necessary, the problem you are trying to solve.
crystalball crystal $*
cs channelstats $*
cs8eol CentOS Stream 8 will go EOL at the end of RHEL8's full support phase on 2024-05-31 -- in [ elapsed [ until 2024-05-31 ] ]
current Current releases are 7.9, 8 Stream & 9 Stream. You can find your current release by running 'rpm -qf /etc/os-release'. Please understand that this channel only supports what is current. If you need support for past releases we urge you to get paid support from Red Hat. Run 'yum update' to get current within a release. Stream-specific assstance can be found in #centos-stream
cve For CVE information please refer to https://access.redhat.com/security/cve/ - for example https://access.redhat.com/security/cve/CVE-2014-0224
cve202010713 boothole $*
cwp centoswebpanel $*
ddg ddg search $*
define google $1
demise Please note that with the recent Red Hat announcement regarding the discontinuation of CentOS Linux 8 and its replacement by CentOS Stream, you have until 2021-12-31 to migrate so there is still quite some time to go yet.
devel c8devel $*
devsub For more information on the free Red Hat Developer subscription please see https://developers.redhat.com/blog/2016/03/31/no-cost-rhel-developer-subscription-now-available/ with instructions for renewal on https://developers.redhat.com/articles/renew-your-red-hat-developer-program-subscription/ and T&C on https://developers.redhat.com/articles/faqs-no-cost-red-hat-enterprise-linux#
digitalocean You can convert a droplet to permit self-managed kernels by following https://www.digitalocean.com/community/tutorials/how-to-update-a-digitalocean-server-s-kernel
directadmin DirectAdmin, like all such products, is not supported in this venue due to the gross changes it makes to the base platform.
disablenm You may remove NetworkManager with yum remove NetworkManager or simply disable it with chkconfig NetworkManager off; chkconfig network on; service NetworkManager stop; service network start. In either case you will need to edit your interface configuration files in /etc/sysconfig/network-scripts/ifcfg-*
docs Except for subscription-manager, Red Hat documentation (https://docs.redhat.com) is applicable for all versions of CentOS. See also errata and installation documentation at https://docs.centos.org . Additional information is also on the CentOS wiki at https://wiki.centos.org
donate For more information on how you can donate to the CentOS Project please see https://wiki.centos.org/Donate
dontaudit By default SELinux uses 'dontaudit' rules to prevent verbose AVC records from going to the audit log. To disable this and see all SELinux messages run semodule -DB, reproduce your problem, and check the audit log. To restore normal logging run semodule -B
drunk Asking for, or providing, assistance while drinking or drunk is a waste of our time and is quite likely to end poorly for all involved.
dualboot For more information on dual booting with Microsoft Windows you may wish to read through https://www.centos.org/forums/viewtopic.php?t=49200
dud You can find information about ELRepo provided driver update disks on https://elrepoproject.blogspot.com/2019/08/rhel-80-and-support-for-removed-adapters.html
dupes If yum is interrupted in mid-update it can leave lots of duplicate packages behind. For a possible way to fix it, please see https://wiki.centos.org/HowTos/CleaningUpDuplicatePackages - and remember the backups!
dvd7 The difference between the DVD and Everything ISOs is detailed in the C7 Release Notes at http://isoredirect.centos.org/centos/7/isos/x86_64/0_README.txt
eibanc Everything Is Broken And No One Cares [(c) Mike A. Harris]
elcommunity There is a new #el-community channel. A gathering place for anyone who considers themselves part of any EL-related distribution. All are welcome.
elrepo The ELRepo Project is recommended for additional hardware support beyond that provided by the distribution. Please see https://elrepo.org/tiki/tiki-index.php for more information. They also have the #elrepo IRC channel here on Libera.chat.
enter Please do not use your Enter key as punctuation. This is a full-text medium where full sentences expressing the whole of your thoughts will help people assist you faster.
enterkey enter $*
entitlement We are, unfortunately, living in an era of entitlement. Alas, this attitude does not generally go over well in this venue; you are not entitled to support. Support is a privilege, provided by community volunteers on their own time. Expecting support from such volunteers is exceptionally rude and we would greatly appreciate it if you wouldn't do that.
epel EPEL (Extra Packages for Enterprise Linux) is a third party yum repository. You can install EPEL by running 'yum --enablerepo=extras install epel-release' and gain access to several thousand more packages for CentOS/RHEL. Please note that issues with the EPEL repository, packages or mirrors should be reported to #epel. Please note that CentOS has no influence over EPEL.
errata The various announcement types listed on the CentOS-Announce mailing list are as follows: CESA - Security Announcements; CEBA - Bugfix Announcements; CEEA - Enhancement Announcements
esr smartquestions $*
eta The CentOS Project is unable to provide ETAs on pending releases. This is not meant as a means to hinder you in your planning but rather to provide the Project with ample time to produce a quality product. If scheduled releases are important perhaps looking into RHEL would be of benefit to you and your organization.
expectations Please note that this channel is unable to assist you with your expectations as they are not under our control and we have no influence over them. Managing expectations is something that one needs to work at.
faq FAQs are found at https://wiki.centos.org/FAQ
faqs faq $*
feeds The project maintains a set of RSS feeds for package announcements for all supported releases at https://feeds.centos.org
findchannels alis $*
findchans alis $*
firefox Please read https://wiki.centos.org/TipsAndTricks/Firefox38onCentOS for details on adjusting Firefox in the context of sites still in need to use older TLS versions
firefox38 firefox $*
firewalld For more information on firewalld please see https://www.hogarthuk.com/?q=node/9 , https://fedoraproject.org/wiki/FirewallD and https://fedoraproject.org/wiki/Features/FirewalldRichLanguage pages. You can also follow the upstream instructions https://access.redhat.com/articles/1229233 to disable firewalld and use iptables instead.
foreshadow Please read https://access.redhat.com/security/vulnerabilities/L1TF for information on the Foreshadow vulnerabilities.
forums The CentOS project maintains a set of forums which may be accessed at https://www.centos.org/forums/
freepbx Please be aware that the FreePBX product is not CentOS but rather a respin and as such can not be supported in this venue. Please seek support from the FreePBX community at #freepbx on this network or https://www.freepbx.org
g google $*
goal Please describe your goal, not what you believe the solution to be.
governance For a writeup on project governance please see https://www.centos.org/about/governance/ and also https://www.centos.org/about/governance/board-responsibilities/
greetings As a general rule we tend to frown on 'channel greetings' as it causes IRC clients to show channel activity and makes people stop what they are doing and look in.
grsec If your 'uname -a' output has the strings 'grs' or 'grsec' in the kernel version you are running a grsec-enabled kernel. This is not an official CentOS kernel and thus can not be supported in this channel. You are encouraged to seek assistance from your provider.
grub If you are having problems with grub such as new kernels not being detected you should check the symlink exists between /etc/grub.conf -> ../boot/grub/grub.conf
grub2 If you are having problems with grub2 on CentOS 7, such as new kernels not being detected, you should check the symlink exists between /etc/grub2.cfg -> ../boot/grub2/grub.cfg (legacy BIOS) or /etc/grub2-efi.cfg -> ../boot/efi/EFI/centos/grub.cfg (UEFI systems)
harden hardening $*
hardening Please see https://wiki.centos.org/HowTos/#head-ed8017672e89d33d57ffd0ed8148abd139e88421 for information on securing your CentOS system
hop cycle $*
howto howtos $*
howtoforge Howtoforge is _not_ a recommended resource. It offers poor advice that can (and has) lead to security problems. It should not be followed and it should not be recommended in this venue.
howtos CentOS HowTos are located at https://wiki.centos.org/HowTos
hyperscalekey https://www.centos.org/keys/RPM-GPG-KEY-CentOS-SIG-HyperScale
i686 The 32-bit x86 build of CentOS 7 has now been released and you can see the announcement at https://lists.centos.org/pipermail/centos-announce/2015-October/021430.html
ibm The IBM acquisition of Red Hat was finalized July 9th, 2019. More information including supplementary links can be found at https://blog.centos.org/2019/07/ibm-red-hat-and-centos - we ask that discussion regarding this topic, including speculation on the future, be conducted in #centos-social.
ifcfg You can find a list of the parameters used by ifcfg-$interface files in /usr/share/doc/initscripts-*/sysconfig.txt
ifconfig The 'ifconfig', 'netstat', 'arp' and 'route' commands have been deprecated for over a decade now and have been removed from the default CentOS 7 and CentOS 8 installs. You are strongly encouraged to learn to use the 'ip' and 'ss' commands instead. If you really need the old tools they are available via 'yum install net-tools'.
illegal Discussion of activities which violate criminal or civil law, either in the US or internationally, are not welcome in this channel and such discussions must immediately move elsewhere.
iptables If you need assistance with iptables rules we ask that you place the output of 'iptables-save -c' on https://paste.centos.org and then post the resulting url to the channel to best aid you in troubleshooting your problem.
irc Please see https://wiki.centos.org/irc for information about this and other CentOS channels on freenode. Also, please read the topic by typing /topic in your client.
isorebuild Rebuilding the CentOS supplied isos is too complicated a subject for an IRC channel and is thus off topic. You can use the upstream doc on https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/anaconda_customization_guide/sect-iso-images as a starting point but there is no support for that process here.
itsdead CentOS-6 is now End-Of-Life and all support has now ended. There will be no more updates and the repos will soon be moved from the mirrors to vault.centos.org. If your business requirements call for continued use of EL6 you will need to contact Redhat about their ELS offerings for RHEL6.
itsover The freenode network's services database is now in the hands of a third party. The network as you know it no longer exists. Please see https://fuchsnet.ch/freenode-resign-letter.txt for more information. Also of interest are https://gist.github.com/joepie91/df80d8d36cd9d1bde46ba018af497409/ and https://gist.github.com/shadowcat-mst/998cea12794768bdb3da2daeff31baad
ius A trusted source for newer versions of php, mariadb, and more is the IUS repo. For more information please see https://ius.io and the #ius channel on this network.
java Please see https://wiki.centos.org/HowTos/JavaRuntimeEnvironment for assistance with Java on CentOS.
jdksupport For more information on the Life Cycle and Support policy for OpenJDK please see https://access.redhat.com/articles/1299013. Note that CentOS follows the upstream support model.
jobads This channel is not a jobs board. We would greatly appreciate you not advertising job offers in this channel. Thank you for your understanding.
justask ask $*
kernel Custom kernels are not supported. Please see https://wiki.centos.org/HowTos/Custom_Kernel for related information though.
kerneldev To properly satisfy dependencies for the kernel-devel package you _MUST_ make sure that the version of the running kernel matches the version of kernel-devel exactly. Reboot into a newer updated kernel if necessary.
keys CentOS GPG Keys - https://www.centos.org/keys/
kickstart You can find the documentation for kickstart syntax and options on https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-kickstart-syntax.html (EL7) or https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/performing_an_advanced_rhel_installation/kickstart-commands-and-options-reference_installing-rhel-as-an-experienced-user (EL8)
ks kickstart $*
ksource Need the kernel source for some reason? Please read https://wiki.centos.org/HowTos/I_need_the_Kernel_Source
language The only way we have to judge you is by how you write and how you present yourself. To this end we ask that you keep in mind that IRC is a full-text medium and we would appreciate it if you would communicate in full sentences; leaving such language usage as 'u', 'ur', 'u r' and other similar travesties to twitter, texting and IM. Thank you for your understanding.
le letsencrypt $*
legacynames If you want to continue to use legacy naming conventions for network interfaces please see https://wiki.centos.org/FAQ/CentOS7#head-31ebc6642958a0df12304d6aab9a49034a3b7802
letsencrypt If you're having problems with expired SSL certs on CentOS 7 you should run yum update to get the latest ca-certificates package
licensing The CentOS Project and the distribution as a whole are licensed under the GPLv2 license while the components within the distribution are covered under a variety of licensing. We are unable to provide definitive answers with regards to licensing and your requirements; you are urged to have your legal counsel review licensing issues. See also https://www.centos.org/legal
lifecycle We follow the product lifecycles as documented at https://access.redhat.com/support/policy/updates/errata with the exception that we are unable to provide extended support.
lifecycles lifecycle $*
limits For minimal and recommended requirements and maximal limits of the supported releases please see https://access.redhat.com/articles/rhel-limits
linux101 This channel is unable to provide basic linux support, nor answer basic shell scripting questions. You are better off asking in ##linux or #bash or similar channels.
listaliases aka list --keys
listinfo mailinglists $*
lists mailinglists $*
localmirror For information on how to go about setting up a local CentOS mirror please see https://wiki.centos.org/HowTos/CreateLocalMirror
log4j As per https://access.redhat.com/security/cve/CVE-2021-44228 CentOS 7/8 are not affected by the log4shell exploit against the log4j packages.
mailinglists Mailing List information: https://wiki.centos.org/GettingHelp/ListInfo
manindexes To populate the indexes for the man command you can run /etc/cron.daily/makewhatis.cron on CentOS-5 and CentOS-6 or /etc/cron.daily/man-db.cron on CentOS-7 or you may wait for cron to run nightly.
manners While it is not always possible to get along with everyone all the time it is possible to treat people with a modicum of respect. We would appreciate it if you would keep this in mind while in the CentOS IRC channels. Thank you.
mantis mantis bug $1
mboxdown The issue with the koji.mbox.centos.org / mbs.mbox.centos.org instances is known; trouble ticket: https://pagure.io/centos-infra/issue/322
meltdown See https://access.redhat.com/security/vulnerabilities/speculativeexecution for details and https://www.redhat.com/en/blog/what-are-meltdown-and-spectre-heres-what-you-need-know for an overview of the problems. Kernel/libvirt/qemu-kvm updates are now released, run yum update. New microcode MUST be downloaded from hardware vendors though this is not necessarily recommended.
memory ram $*
migrate7 For changes and considerations to take into account when moving from CentOS-6 to CentOS-7 please see https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Migration_Planning_Guide/index.html
minimal8 At this time there is no minimal ISO available for CentOS-8.
minimalrpm While it is best to properly build rpms from source to achieve appropriate binary packages this is not always possible. If you need to build an rpm from an existing binary please see https://meinit.nl/creating-rpm-some-binary and https://stackoverflow.com/questions/880227/what-is-the-minimum-i-have-to-do-to-create-an-rpm-file for a quick-n-dirty method.
mirrorlist mirrors $*
mirrors The mirror list for CentOS can be found here: https://www.centos.org/download/mirrors/ Mirrors with direct dvd access are available if you are unable to use bittorrent. For best results, please select a mirror closest to you. Please note that source rpms for all releases are on http://vault.centos.org
ml mailinglists $*
mock A good way to build packages for CentOS is the 'mock' utility which is available from the EPEL repository. Please see https://fedoraproject.org/wiki/Using_Mock_to_test_package_builds for assistance with the utility.
moduleoverride To override RPMs provided as part of a module please see https://wiki.centos.org/TipsAndTricks/3pModules
moduleoverrides moduleoverride $*
monodevelop For assistance with installing monodevelop on CentOS-7 please see https://www.mono-project.com/docs/getting-started/install/linux/#centos-fedora-and-derivatives and see https://www.mono-project.com/community/help/irc/ or ##mono on this network for possible assistance with CentOS-6.
multimedia For multimedia desktop support it is recommended that you look at the rpmfusion repo. Please see https://wiki.centos.org/AdditionalResources for more information.
netdiag To aid in diagnosing network problems, please use https://pastebin.centos.org to show us copies of your /etc/sysconfig/network and all files in /etc/sysconfig/network-scripts that start with ifcfg* or route* or rule*
netstat ifconfig $*
networkmanager For some additional information on NetworkManager please see https://www.hogarthuk.com/?q=node/18
networkmangler service NetworkManager stop && chkconfig NetworkManager off && vi /etc/sysconfig/network-scripts/ifcfg-eth0 (make it sane including disabling NetworkManager by setting NM_CONTROLLED to no) && chkconfig network on && service network start
networkmangler7 systemctl stop NetworkManager && systemctl disable NetworkManager && vi /etc/sysconfig/network-scripts/ifcfg-XXX (make it sane including disabling NetworkManager by setting NM_CONTROLLED to no) && systemctl enable network && systemctl start network
newapps For a non-biased write-up of various methods to get newer packages on CentOS please see https://wiki.centos.org/HowTos/NewerApps
newerapps newapps $*
newerpackages newapps $*
nm networkmanager $*
nm7 networkmangler7 $*
nmwifi In 7.1 the NetworkManager package was broken into multiple sub-packages. One of these is NetworkManager-wifi which is necessary for wireless under 7.1. If you are having wifi problems please make sure you have this package installed.
noise Conversation regarding the recent announcement of CentOS Stream is directed to the #centos-stream channel in an attempt to consolidate all conversation in a single topical and central location to ease participation and to clear our other channels for normal support matters. Thank you for your understanding.
nomore clearmores $*
noprivacy There is no privacy. There is no security. When people realize and accept this life becomes easier. (c) Bahhumbug
nosupport For support with CentOS Linux you want to /join #centos and ask there; this is our community social channel and we don't provide support here.
novz This channel is unable to support openvz as either a host or a guest. The kernel is limited in functionality which places undue hardship on users. Please seek assistance from your hosting provider. Alternatively find alternative hosting that uses kvm or similar virtualization technology.
ntfs For help with NTFS on CentOS, please see https://wiki.centos.org/TipsAndTricks/NTFS
ntp Information on setting up NTP can be found at: https://kbase.redhat.com/faq/docs/DOC-2148
offtopic social $*
openvz novz $*
openwave perforce $*
ot social $*
otherspins You are not running CentOS! Please read https://wiki.centos.org/AdditionalResources/OtherSpins for more information and ask your provider to give you real CentOS.
othervenues There are other venues available for you to continue this conversation. You can /msg alis list *topic* to find channels with similar interests; move to private messages via /query otherparty; or even create your own channel via /join ##newchannel but at this time we ask you to pick one of those as your conversation is no longer topical to this venue. Thank you.
ovh Support issues with OVH provisioned boxes, using their images, need to be addressed by OVH themselves.
packageupdates The CentOS project endeavors to make package updates available as soon as possible. But there is not, nor can be, any estimations of when any individual update will be released. _Typically_ it is within a few hours of upstream release but this may be delayed for any number of reasons. We ask that you remain patient.
packaging rpmbuild $*
packagingguide For a good writeup on RPM packaging please see https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/rpm_packaging_guide/ and https://rpm-packaging-guide.github.io/
panels Due to the gross changes that panels make to the underlying OS we are unable to support such boxes in this channel as they are effectively no longer running CentOS but rather a mixture of CentOS and the parts that they have replaced. You are encouraged to contact your hosting provider or panel vendor for further assistance.
partnership relationship $*
paste Please do not paste more than 3 lines in the CentOS IRC channels. We ask that you use https://paste.centos.org for anything over three lines. You may 'yum --enablerepo=extras install cpaste' for a command line client. Please note that other pastebins may be ignored by channel users.
pastebin paste $*
pb paste $*
pci You will see many false positive results from PCI scans of CentOS machines as they base their recommendations on banner version numbers and these do not accurately reflect the status of vulnerabilties due to Red Hat's backporting policies. If you're having problems with PCI compliance please refer to @backports, @cve and rpm -q --changelog packagename.
perforce Please note that Perforce (aka Open Logic aka Rogue Wave) are not affiliated with the CentOS Project in any manner and the support they offer has not been vetted by the CentOS Project.
performance There is a known issue with tuned performance profiles under CentOS; tuned defaults to a low-performance profile. For more information and simple directions on how to increase performace please see http://jperrin.org/centos/boosting-centos-server-performance/
pkgsrc The packages that are available from pkgsrc.joyent.com are not supported in this venue. Please seek assistance from joyent.com
plesk Neither Plesk nor the machines it is installed on are supported here due to the large number of changes they make. Please ask for support in ##plesk
pm Many people on freenode dislike being sent private messages without the sender first asking if it is ok to do so. This is a matter of politeness and not meant to offend. freenode even offers user modes to prevent such private messages. Please be respectful and ask before sending.
politics As a means to keep this channel a bit more sane and to help reduce channel temperature we now have a #centos-politics channel for the discussion of current political events.
poll polls $*
polls Polls of the channel are generally pointless. If you have a specific question to ask you are better off just asking it rather than asking the channel 'Does anyone use foo?'
postfix For information on setting up postfix on CentOS, please see https://wiki.centos.org/HowTos/postfix
powertools On CentOS-8 the development libraries, compilers and other development-related tooling is contained in the powertools repo which is disabled by default (dnf config-manager --enable powertools). This is the CentOS equivalent of Red Hat's CodeReadyBuilder repo
ppc The #centos-ppc channel exists for people interested in the CentOS PowerPC platform.
privacy noprivacy $*
psychology $1: Your amateur attempts at psychology are unlikely to get you far. Please cease this line of conversation, thank you.
pubmirror For information on setting up a public mirror please see https://wiki.centos.org/HowTos/CreatePublicMirrors
pullingteeth Please understand that the members of this channel can not be expected to extract, like pulling teeth, information necessary to the resolution of your issues. We ask that you provide necessary information up front, utilizing https://pastebin.centos.org if more than 3 lines of text, to aid us in assisting you.
puphpet If you use the product 'puphpet' then you'll need to ask for support from them for any problems you experience. Please join #puphpet and ask there
pwnkit polkit updates addressing the polkit pkexec security issue are released for both CentOS-7 and CentOS 8 Stream; run 'yum update' to update. CentOS Stream 9 updates are expected soon but for now you can grab directly from https://kojihub.stream.centos.org/koji/buildinfo?buildID=16593
pwrecover For assistance with recovering a lost or forgotten root password please see https://wiki.centos.org/TipsAndTricks/ResetRootPassword
pxe For more information on PXE and CentOS please refer to https://wiki.centos.org/HowTos/PXE/PXE_Setup
python You may find newer versions of the Python packages in both the EPEL and IUS repositories. Please see https://wiki.centos.org/AdditionalResources/Repositories for additional information. These versions install side-by-side with the system python so as not to cause problems.
raid For a good resource on Linux Software RAID please see both https://www.tldp.org/HOWTO/Software-RAID-HOWTO.html and also https://raid.wiki.kernel.org/index.php/Linux_Raid for a more recent set of documentation.
raid2 For more information on RAID technology please see the wiki articles https://en.wikipedia.org/wiki/RAID and https://en.wikipedia.org/wiki/Standard_RAID_levels - additionally https://en.wikipedia.org/wiki/Non-standard_RAID_levels may be of interest.
raidisnotabackup RAID is not a backup solution. You are strongly encouraged to put in place a solid and robust backup plan and to test it regularly.
ram Linux reports ram usage differently than you might expect. Please see https://www.linuxatemyram.com/ for a detailed explanation
randomness For one method of addressing the issue of lack of entropy on virtual or cloud instances please see https://www.digitalocean.com/community/tutorials/how-to-setup-additional-entropy-for-cloud-servers-using-haveged
registering You need to be using a nick that has been registered with freenode services in order to join our namespace. Information for which can be found at https://freenode.net/kb/answer/registration
relationship For more information on the CentOS / Red Hat relationship you are encouraged to read https://community.redhat.com/centos-faq/
releasenotes Release notes for CentOS are available at https://wiki.centos.org/Manuals/ReleaseNotes You may also be interested in the Red Hat release notes which can be found at https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/ - please note that all release notes up to the current release are applicable (ie. for 7.8 you need to read the notes for 7.0, 7.1 ... 7.8)
releases For detailed information on release dates of the various versions and point releases please see https://en.wikipedia.org/wiki/CentOS#CentOS_releases (click 'show' to expand the list).
remi You can find support for Remi's packages in the #remirepo channel here on freenode.
remind scheduler add [apply seconds $1] "echo $nick: REMINDER - $2"
reminder remind $*
repoforge rpmforge $*
reporename CentOS 8.3 has changed the name of the centos-release and centos-repos packages and calls them centos-linux-*. All repo names have changed and are now lowercase . You will need to manually sync any changes you made to the old CentOS-xxxx.repo files to the new CentOS-Linux-xxxx.repo files as they have been backed out for you.
reportbugs bugs $*
repos Additional packages are often in 3rd party repos. Information on additional CentOS repos is available at https://wiki.centos.org/AdditionalResources/Repositories Pay attention to the reference on yum-priorities.
rhel Questions about RHEL are better asked directly in #rhel
rn releasenotes $*
roguewave perforce $*
root There are several ways to become root on a Linux system. See https://wiki.centos.org/TipsAndTricks/BecomingRoot for more information
rootpass pwrecover $*
rootpw pwrecover $*
route ifconfig $*
rpmbuild packagingguide $*
rpmforge rpmforge/repoforge should not be used. It has not received updates in years, numerous mirrors are now broken, and using it is DANGEROUS. Please find alternative package sources such as EPEL or other trusted repos at https://wiki.centos.org/AdditionalResources/Repositories
rpmfusion Support for and discussion regarding rpmfusion is best addressed by #rpmfusion.
rt You can find kernel-rt packages on https://buildlogs.centos.org/c7-rt/ - These are built by the CentOS team but are used at your own risk and may not match the latest CentOS kernels.
rtfm While members of this channel are always happy to assist others we do ask that people do a modicum of reading and researching their issues first. Many answers are available in the documentation and via google.
rute tutorial $*
sack kernels 2.6.32-754.15.3.el6 and 3.10.0-957.21.3.el7 that address the TCP SACK issues are released and on their way to mirrors. Please see https://access.redhat.com/security/vulnerabilities/tcpsack for mitigation steps
sanity Time til the US regains its collective sanity: [ elapsed [ until 2020-11-04 ] ]
sb sourcebuilds $*
scl For more information on the CentOS SCL (Software Collections) initiative please see https://wiki.centos.org/AdditionalResources/Repositories/SCL
sclsupport sigsupport $*
sebook selinuxbook $*
selbook sebook $*
selcheck Please paste the single line of output from the following command into the channel: /usr/sbin/sestatus | head -1
selinux Useful resources for SELinux: https://wiki.centos.org/HowTos/SELinux | https://wiki.centos.org/TipsAndTricks/SelinuxBooleans | https://docs.fedoraproject.org/en-US/Fedora/13/html/Security-Enhanced_Linux/ | https://www.youtube.com/watch?v=bQqX3RWn0Yw | https://opensource.com/business/13/11/selinux-policy-guide | http://freecomputerbooks.com/The-SELinux-Notebook-The-Foundations.html
selinuxbook For a basic and fun introduction to selinux type enforcement please take a look at https://github.com/mairin/selinux-coloring-book
shiny No. CentOS isn't shiny. It's not engineered to be all shiny. We don't _want_ it to be all shiny. CentOS is based on Red Hat Enterprise Linux which is all about _stability_ over cutting edge and shiny. If you want shiny you might want to investigate other distros. If you want stable, you're in the right place.
sigs For more information on the various CentOS Special Interest Groups please take a look at https://wiki.centos.org/SpecialInterestGroup
sigsupport Support for any of the SIG projects or SCLs is better handled via the centos-devel mailing list as they are the best suited for assisting their users. For more information please see https://wiki.centos.org/GettingHelp/ListInfo or register at https://lists.centos.org/mailman/listinfo/centos-devel
smartquestions You are encouraged to read http://www.catb.org/~esr/faqs/smart-questions.html to understand how to properly phrase a question so you can best receive the assistance you need. We additionally recommend that you read http://xyproblem.info/ regarding the classical 'X-Y' problem.
social The #centos-social channel is available for general chit-chat and topics that are not directly related to CentOS or which are off-topic in #centos. We appreciate your assistance in keeping the main #centos channel as topical as possible.
somethingnew Hi. As the world and society are currently burning let's all try to be a *bit* more flexible in our interactions with users. Let's assume people have what they see as a true need to be asking the questions they're asking. Let's try to be a bit more accomodating if we can. Thank you.
sourcebuild sourcebuilds $*
sourcebuilds This venue is unable to provide assistance with building from source or with such software that has been installed from source. You are strongly encouraged to learn how to create proper packages that can be installed via rpm/yum. Please see https://rpm-packaging-guide.github.io/ for information on building packages.
sources You can find the source rpms for CentOS at http://vault.centos.org. Additionally you may read https://wiki.centos.org/Sources to learn about the git repository setup at https://git.centos.org and how to best make use of it.
spoonfeeding Please take a look at https://wiki.centos.org/SpoonFeed for our views on spoonfeeding.
stab openvz $*
startx11boot To start an instance booting into a graphic environment run systemctl set-default graphic.target and then either reboot or run systemctl isolate graphic.target
stopit There is, in the general case, no reason to disable integral security layers such as selinux or the host-based firewall. Both services are installed and enabled by default for good reason. Spending the time necessary in learning how to properly manage these security layers is in your best interests.
stopx11boot To stop an instance from booting into a graphic environment run: systemctl set-default multi-user.target and then reboot or run systemctl isolate multi-user.target
stream The CentOS stream release is supported in the #centos-stream channel. For additional information on this release please see https://wiki.centos.org/Manuals/ReleaseNotes/CentOSStream and https://www.centos.org/centos-stream
streamcves If timely CVE updates are important to you and your organization you may wish to reconsider the use of the CentOS Stream releases. Such updates *purposely* lag those of their upstream counterparts; often by a large amount of time.
streamfaq For answers to Frequently Asked Questions about CentOS Stream please see https://wiki.centos.org/FAQ/CentOSStream
streamoops There is a bug in all Stream installs that means that centos-release-stream is not even installed and you need to install it yourself
su root $*
sudo In order to ensure sanity of the configuration you are _strongly_ advised to only edit /etc/sudoers by using the visudo" utility. man visudo for more information.
support If you require an SLA or a service contract you are strongly encouraged to make use of the commercial offerings from Red Hat. There is no official support for CentOS, only that which the community chooses to provide on a strictly volunteer basis.
swearing We would appreciate it if you would maintain a sense of professionalism while in this channel. We specifically ask that you do not swear here.
systemd For systemd documentation please see http://0pointer.de/blog/projects/systemd-for-admins-1.html . A SysVInit to systemd crib sheet is at https://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet and other info on https://linoxide.com/linux-command/linux-systemd-commands/ Additionally https://access.redhat.com/articles/systemd-cheat-sheet may be of use as well.
systemd2 There is also https://fedoramagazine.org/what-is-an-init-system/ as a general systemd overview.
t $1: [$2]
thedate The US will find out if it has a future to speak of in [ elapsed [ until 2020-11-03 ] ]
toast After much deliberation it is our expert opinion that your server is now a heap of useless metal and silicon and should be re-installed.
topical The #centos channel is meant for the support of the CentOS linux distribution, specifically for installation issues. The channel may try to support non-CentOS issues from time to time but it's not the channel's primary object. You may try the mailing lists (https://wiki.centos.org/GettingHelp/ListInfo) or the forums (https://www.centos.org/forums/) for additional help.
triggers For a list of triggers that centbot is aware of please see https://wiki.centos.org/irc/Centbot#head-78af71a2afa5a6782ee3b606ad1944dcde99c200
tst boom: [ elapsed [ until 2020-12-01 ] ]
tuned Please see http://jperrin.org/centos/boosting-centos-server-performance/ for more information on potential performance increases using tuned.
tutorial An excellent guide for users that are new to Linux can be found at https://rute.gerdesas.com - while this is not official project documentation it is a well-regarded general introduction to Linux and may be of help. For an introduction to the bash shell take a look at http://linuxcommand.org/lc3_learning_the_shell.php
ud urbandictionary $*
uname Please paste the single line of output from the 'uname -a' command run on the machine in question to the channel. We request this information to better assist you. If you are worried about your privacy or security we ask that you _only_ obfuscate the hostname and leave all other information intact.
updates Please be aware that when updating you must install _all_ updates. Cherry picking updates can lead to corner-case and difficult to diagnose issues and is not supported.
upgrade There is no supported method to perform an in-place upgrade between major versions of CentOS. Please backup your data, reinstall with the newer major release and then restore your data. If in-place upgrades are important to you we suggest looking into RHEL.
upgrades upgrade $*
usbinstall Information on USB key based installs can be found at https://wiki.centos.org/HowTos/InstallFromUSBkey
vampire A support vampire is one that considers himself or herself entitled to support, often at the expense of others. A support vampire is a selfish person that does not care to understand that support is granted on a purely volunteer basis and no one is _entitled_ to such.
vault If you REALLY need an old version of CentOS that is no longer available on the mirrors, then they are available at http://vault.centos.org
vdo Virtual Data Optimizer (VDO) is a device-mapper target that was introduced in RHEL-7.5. VDO provides inline data reduction for Linux in the form of deduplication, compression, and thin provisioning. VDO is currently delivered as two packages: kmod-kvdo (kernel modules), and vdo (user-space utilities). Additional information can be found at https://tinyurl.com/vdodocs
versions To determine what versions of packages are available please browse a nearby mirror. For a list of mirrors please see https://www.centos.org/download/mirrors/
volunteers The people providing support in this channel are volunteers and may be pulled away for real life matters at any time or be otherwise engaged. Please treat them with patience and respect and remember that support is a privilege, not a right.
vps You are not running CentOS. Please read https://wiki.centos.org/AdditionalResources/OtherSpins and please ask your provider for further assistance.
vzhostnode Any and all support issues with boxes that are running, or have been running, the openvz kernels (also known as the VZ host node) are unsupportable in this venue. Please contact your hosting provider for more assistance or contact OpenVZ support directly.
weather weather is now available using &^weather
webmin The webmin, usermin and virtualmin web management interfaces are not supported in this venue. Please seek assistance from their channels (#webmin / #virtualmin) or other support venues.
wemoved The CentOS Project, like so very many other projects that used to call freenode home, have migrated to another platform. You can now find us on ircs://libera.chat in the same named channels as you are familiar with on freenode. We greatly apologize for the inconvenience but this is being caused by circumstances beyond our control. Thank you.
wg wireguard $*
whatisit about $*
whatweship This venue is only able to support what the CentOS project ships. If you install a package from a source other than the CentOS project you will need to seek assistance with that package from whence you received it.
wiki The CentOS wiki is located at https://wiki.centos.org
winmd5 To validate ISO MD5 checksums from windows please see https://support.microsoft.com/en-us/kb/841290 and follow directions on that page.
wireguard For information on wireguard installation for CentOS please see https://www.wireguard.com/install/ and scroll down to the sections for CentOS
x86 i686 $*
xen Support for Xen on CentOS is best found in the #centos-virt channel or on the mailing list of the same name; see https://lists.centos.org/mailman/listinfo/centos-virt for more information.
xen4centos Please see https://wiki.centos.org/Manuals/ReleaseNotes/Xen4-01 for more information on the Xen4CentOS project
xy It sounds like you may be trying to solve an XY problem where you think you want to do Y in order to achieve X and it would help if we knew what your end goal (i.e X) actually is - http://xyproblem.info/
yum yumerror $*
yumerror If having trouble with yum please add -d9 -v to your problematic yum command line and then place _ALL_ output from yum on https://paste.centos.org/ - include the command prompt where you enter the command right through to where it returns.
yumsecurity The official position of the CentOS project on the yum-plugin-security is that the project does not test for CVE closure on updates so does not publish the necessary metadata for the security plugin to function. If you require such validation you are encouraged to use RHEL.
zfs ZFS support is available from the 3rd-party zfsonlinux kernel module available from https://zfsonlinux.org/. Please note that we cannot support ZFS or the systems that run it. For support please visit #zfsonlinux
zodbot If you wish to find out the maintainer for an EPEL package please take a look at https://fedoraproject.org/wiki/Zodbot - you will want to read up on the 'whoowns' and 'fasinfo' commands. Please '/query zodbot' to ask it questions.

2023-09-11 07:23