Centbot 是一個連接到 freenode IRC 網絡的 supybot-limnoria 實例,有助支援 CentOS 的 IRC 社群。

Centbot 能辨認某些「關鍵字」,觸發它回答頻道上一些較常出現的提問。

Centbot 運作的方法是監視各個頻道並搜尋這些關鍵字,然後在找到時顯示相關資料。譬如說你想查看 CentOS-6 的支援結束日期,你可以在頻道內發送


然後 centbot 會以結束支援的日期作為答覆,及顯示距離該日子還有多久。


/msg centbot @list alias 

你將會在清單的底倍看見 more messages 這些字間;這意味著該 bot 有更多資訊要告訢你,並在聽候你的吩咐。你可以這樣做:

/msg centbot @more 



/msg centbot @c6eol 


/msg centbot @botstaff 


現有的 Centbot 關鍵字清單

Known Centbot Aliases As Of December 13, 2018


Resulting Output


For a more in-depth description of both CentOS the product and CentOS the project please see http://www.centos.org/about/ and http://wiki.centos.org/FAQ/General


For more information on the Automatic Bug Reporting Tool (abrt) please see https://wiki.centos.org/TipsAndTricks/ABRT


For assistance with finding channels on freenode you can go ask alis. /msg alis help for more information.


The product that Amazon sells as Amazon Linux is _not_ CentOS and thus is unsupportable in this channel. You will need to contact Amazon for all support matters on that server.


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 http://wiki.centos.org/GettingHelp/ListInfo for more information on this and other mailing lists.


The various announcement types listed on the CentOS-Announce mailing list are as follows: CESA - Security Announcements; CEBA - Bugfix Announcements; CEEA - Enhancement Announcements


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.


The #centos-arm channel exists for people interested in the CentOS ARM platform.


ifconfig $*


Instead of asking to ask, just state your problem clearly and concisely. If someone is available to assist you they will.


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.


The atrpms repository is effectively abandoned and should _not_ be used. Use alternative package sources such as epel, nux-dextop, etc. Please see http://wiki.centos.org/AdditionalResources/Repositories for a list of community vetted repositories.


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 '@'.


We would greatly appreciate it if you would disable your client's automatic /away functionality while in the CentOS IRC channels. This also includes away nick changes. To be blunt no one cares if you are present or away and /away messages and nick changes only amount to channel noise. Thank you.


Please see https://access.redhat.com/security/updates/backporting/ for information on backporting of security fixes and features in CentOS and RHEL


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.


It's a good thing you have a robust backup policy in place with regularly scheduled tests of those backups. We find that many people come here without such good practices and it proves quite harmful.


Yummy, scrumptious BACON


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.


If you find yourself banned on any of the #centos channels please see https://wiki.centos.org/irc/banned


Blame Bahhumbug - everyone else does.


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.html


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, phibs, pj, TrevorH, wolfy and Zathrus; any of whom may be contacted regarding issues with the bot.


Everything is broken.


Please see http://wiki.centos.org/TipsAndTricks/BrokenVserver for more information on problematic providers and vendors


The issue with the CentOS wiki is known and being worked on. There is no ETA on service restoration.


Do note that RHEL has officially deprecated its use of the btrfs filesystem. It will receive no significant updates and it will not be present in the next release of RHEL/CentOS. As it was never more than a tech preview people really should never have been using it in the first place.


bugs $*


For CentOS-specific issues one may open a trouble ticket via http://bugs.centos.org. If the issue is not specific to CentOS one should open both a CentOS ticket at the previous URL and also a ticket at our upstream at https://bugzilla.redhat.com and use the provided field to link the CentOS ticket #. Please ensure that the issues being reported are reproducible.


If you think you have a bug then report it on http://bugs.centos.org - look for similar issues there with possible workarounds. If nothing found then open a new ticket. If you think this is an issue that's also in RHEL of the same version then do the same at https://bugzilla.redhat.com and link the CentOS ticket to the BZ ticket in the field provided.


bz $*




bugzilla bug $1


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.


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.


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.


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.


CentOS 6 entered Production Phase 3 on May 10th 2017 and now only receives critical updates. It will go EOL on 30 Nov, 2020 -- in [ elapsed [ until 2020-11-30 ] ]


RHEL 7.5 was released 2018-04-10. CentOS 7.5.1804 was released 2018-05-09 and is now available on the mirror network. Please read the release notes on https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7 for important info


RHEL 7.6 was released on 2018/10/30 and is being rebuilt for CentOS. There is no ETA other than ASAP. It will go into the CR repo first and isos will be released later.


For more information on changing hostname on an AWS AMI instance please see https://forums.aws.amazon.com/message.jspa?messageID=560446


CentOS 7 will go EOL on 30 June, 2024 -- in [ elapsed [ until 2024-06-30 ] ]


Getting a little ahead of yourself there, aren't you?


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.


For more information on this instance please see http://wiki.centos.org/irc/Centbot


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.


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.


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.


CentOS 5 was released in April 2007 and is supported until March 2017. Packages can still be found at http://vault.centos.org however we encourage you to upgrade.


CentOS 6 was released in July 2011, and is supported until November 2020


Centos 7\.5\.1804 is being worked on and will be shipped when ready. Keep an eye on the 7.4/CR repo and/or the CentOS announce mailing list.


CentOS 7 was released in July 2014, and is supported until June 2024


No, there is no estimate as to when CentOS-8 will be released. As upstream does not, ever, publish release timelines we can only say that CentOS-8 will follow RHEL-8 by some amount of time. So far, there hasn't even been a RHEL8 public beta.


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.


updates $*


Crispy scrumptious bacon smothered in dark chocolate... yummy!


Creamy, delicious CHOCOLATE


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 is _not_ CentOS and thus can not be supported in this venue. Please seek assistance from their support venues.


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.


For assistance with linux-based clustering you may find you get better results if you ask in either #linuxcluster or #clusterlabs


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 http://wiki.centos.org/AdditionalResources/Repositories for more information on 3rd-party repos.


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 the semi-official #cpanel channel here on Freenode (/join #cpanel) or you may alternatively open a free ticket up via http://tickets.cpanel.net/submit


For information on the Continuous Release repository please see http://wiki.centos.org/AdditionalResources/Repositories/CR


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 $*


I would consult my crystal ball but it is in the shop getting repaired. How about you explain, in as much detail as necessary, your problem so we can better assist you?


channelstats $*


Current releases are 6.10 and 7.5 (1804). You can determine your current release by running 'rpm -q centos-release'. Please understand that this channel is only able to support what is current. If you need support for past releases we urge you to get paid support for such from Red Hat. Run 'yum update' to get current within your release.


Both CentOS 6 and 7 have kernel updates available that fix CVE-2018-5390. Run yum update to get kernel-2.6.32-754.3.5.el6.x86_64 or kernel-3.10.0-862.11.6.el7.x86_64


For CVE information please refer to http://access.redhat.com/security/cve/ - for example https://access.redhat.com/security/cve/CVE-2014-0224


centoswebpanel $*


ddg search $*


google $1


For more information on the free Red Hat Developer subscription please see http://developers.redhat.com/blog/2016/03/31/no-cost-rhel-developer-subscription-now-available/


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, like all such products, is not supported in this venue due to the gross changes it makes to the base platform.


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-*


The versions of yum and rpm shipped in the base distribution are the only officially supported package management tools for CentOS. Please note that while dnf is available elsewhere it is not supported in this venue.


With the exception of RHN and Subscription Manager, Red Hat documentation is applicable for CentOS-6 and CentOS-7 and can be found at http://docs.redhat.com. Additional information can also be found on the CentOS wiki at http://wiki.centos.org.


For more information on how you can donate to the CentOS Project please see http://wiki.centos.org/Donate


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


Asking for, or providing, assistance while drinking or drunk is a waste of our time and is quite likely to end poorly for those involved.


For more information on dual booting with Microsoft Windows you may wish to read through https://www.centos.org/forums/viewtopic.php?t=49200


Please see https://wiki.centos.org/HowTos/CleaningUpDuplicatePackages for a possible way to recover if your system has many duplicate packages as a result of a failed yum update. Please note that these instructions are a work in progress and may contain errors or cause unexpected problems. Backup first.


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


Everything Is Broken And No One Cares [(c) Mike A. Harris]


The ELRepo Project is recommended for additional hardware support beyond that provided by the distribution. Please see http://elrepo.org/tiki/tiki-index.php for more information. They also have the #elrepo IRC channel here on freenode.


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.


$1: Hi. Your Enter key appears to be broken as it looks to be randomly pressing itself. A good way to fix this is to type complete sentences and not treat IRC as twitter. It greatly helps to get your point across without annoying people.


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.


Do note that the CentOS project has no control over EPEL. If you have issues with epel please direct your questions to #epel. Thank you.


EPEL 5 support ended on 31 March, 2017 - [ elapsed [ until 2017-03-31 ] ]


EPEL 6 will end support on 30 November, 2020 - in [ elapsed [ until 2020-11-30 ] ]


EPEL 7 will end support on 30 June, 2024 - in [ elapsed [ until 2024-06-30 ] ]


Patience, young grasshopper.


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


smartquestions $*


FAQs are found at http://wiki.centos.org/FAQ


faq $*


alis $*


firefox $*


Please read http://wiki.centos.org/TipsAndTricks/Firefox38onCentOS for details on adjusting Firefox in the context of sites still in need to use older TLS versions


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.


The Freenode web gateway is banned in the main CentOS IRC channel due to repeat abuse incidents; if you wish to join that channel you will need to have a registered Freenode account and use a dedicated client or one of the alternative web-based gateways. Please see http://freenode.net/faq.shtml#nicksetup for more information.


webgateway $*


Please read https://access.redhat.com/security/vulnerabilities/L1TF for information on the Foreshadow vulnerabilities.


The CentOS project maintains a set of forums which may be accessed at http://www.centos.org/forums/


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 http://www.freepbx.org


webgateway $*


webgateway $*


google $*


Please describe your goal, not what you believe the solution to be.


ddg search $*


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.


If your 'uname -a' output has the strings 'grs' or 'grsec' in the kernel version you are running a grsec-enabled kernel. This is fully unsupported and you are asked to seek assistance from your provider.


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)


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


google how to google


hardening $*


Please see http://wiki.centos.org/HowTos/#head-ed8017672e89d33d57ffd0ed8148abd139e88421 for information on securing your CentOS system


hastebin.com and similar services that require active content be enabled in the browser are frowned upon and generally ignored by the regular members of this channel. You are strongly encouraged to use http://pastebin.centos.org or http://fpaste.org instead.


cve-2017-2636 $*


cycle $*


CentOS HowTos are located at http://wiki.centos.org/HowTos


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.


CentOS HowTos are located at http://wiki.centos.org/HowTos


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


While we are well aware of the news of Red Hat's acquisition by IBM it is too early to speculate on what this means for anything within the Red Hat ecosystem. We ask that people refrain from discussing it in #centos and instead use #centos-social or another venue. Thank you for your understanding.


You can find a list of the parameters used by ifcfg-$interface files in /usr/share/doc/initscripts-*/sysconfig.txt


The 'ifconfig', 'netstat', 'arp' and 'route' commands have been deprecated for over a decade now and have been removed from the default CentOS 7 install. 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'.


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 move elsewhere.


For information on the ImageMagick issues and methods to mitigate impact please see https://access.redhat.com/security/vulnerabilities/2296071


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.


Please see http://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.


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.




A trusted source for more modern mysql, php and python is the IUS repo. For more information please see https://ius.io and the #ius channel on this network. Additionally you may also be interested in https://ius.io/IUSvsSCL/ and https://www.hogarthuk.com/?q=node/15 which discuss the pros and cons of SCL and IUS


Please see http://wiki.centos.org/HowTos/JavaRuntimeEnvironment for assistance with Java on CentOS.


This channel is not a jobs board. We would greatly appreciate you not advertising job offers in this channel. Thank you for your understanding.


CentOS-5 went EOL on 31 March, 2017 ([elapsed [ until 2017-03-31 23:23:59 ] ] ago) and content moved to http://vault.centos.org NOTE: There will be NO UPDATES to this release and it SHOULD NOT BE USED.


ask $*


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.


Custom kernels are not supported. Please see http://wiki.centos.org/HowTos/Custom_Kernel for related information though.


CentOS GPG Keys - https://www.centos.org/keys/


For a list of known issues with the 7.4 release please refer to https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7#head-281c090cc4fbc6bb5c7d4cd82a266fce807eee7c


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


Sure. You first.


kickstart $*


Need the kernel source for some reason? Please read http://wiki.centos.org/HowTos/I_need_the_Kernel_Source


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.


If you want to continue to use legacy naming conventions for network interfaces please see http://wiki.centos.org/FAQ/CentOS7#head-31ebc6642958a0df12304d6aab9a49034a3b7802


For those too lazy to read the rest of the release notes, here is a direct link to the relevant section - https://wiki.centos.org/Manuals/ReleaseNotes/CentOS7#head-281c090cc4fbc6bb5c7d4cd82a266fce807eee7c


Updated libuser packages addressing RHSA-2015-1482 / (CVE-2015-3245 and CVE-2015-3246) are available in the 'updates' repo for C7 and in the 'cr' repo (http://wiki.centos.org/AdditionalResources/Repositories/CR) for C6. See https://access.redhat.com/articles/1537873 for more information, including mitigation steps for C5.


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 http://www.centos.org/legal


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.


lifecycle $*


For minimal and recommended requirements and maximal limits of the supported releases please see https://access.redhat.com/articles/rhel-limits


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.


If you have general linux questions, you are probably better off asking in ##linux


mailinglists $*


Mailing List information: http://wiki.centos.org/GettingHelp/ListInfo


For information on how to go about setting up a local CentOS mirror please see https://wiki.centos.org/HowTos/CreateLocalMirror


Mailing List information: http://wiki.centos.org/GettingHelp/ListInfo


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.


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 bug $1


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.


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


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 http://meinit.nl/creating-rpm-some-binary and http://stackoverflow.com/questions/880227/what-is-the-minimum-i-have-to-do-to-create-an-rpm-file for a quick-n-dirty method.


mirrors $*


The mirror list for CentOS can be found here: http://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


mailinglists $*


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.


For assistance with installing monodevelop on CentOS-7 please see http://www.mono-project.com/docs/getting-started/install/linux/#centos-fedora-and-derivatives and see http://www.mono-project.com/community/help/irc/ or ##mono on this network for possible assistance with CentOS-6.


Asking questions in multiple places is bad because people in the other channel(s) won't see what you've been told here and vice versa. It wastes their time and ours. You're essentially communicating that you think your time is more valuable than the time of those trying to help you.


For multimedia desktop support on CentOS-6 and CentOS-7 it is recommended that you look at the nux-dextop repo. It is maintained by a known community member and is trusted. Please see http://wiki.centos.org/AdditionalResources/Repositories for links to that repo.


To aid in diagnosing network problems, please use http://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*


ifconfig $*


For some additional information on NetworkManager please see https://www.hogarthuk.com/?q=node/18


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


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


newerpackages $*


newerpackages $*


For a non-biased write-up of various methods to get newer packages on CentOS please see https://www.hogarthuk.com/?q=node/15


networkmangler7 $*


networkmanager $*


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.


There is no privacy. There is no security. When people realize and accept this life becomes easier. (c) Bahhumbug


Release Notes for CentOS are available at http://wiki.centos.org/Manuals/ReleaseNotes . You may also wish to read the RHEL release notes at http://www.redhat.com/security/updates/notes/


For help with NTFS on CentOS, please see http://wiki.centos.org/TipsAndTricks/NTFS


Information on setting up NTP can be found at: http://kbase.redhat.com/faq/docs/DOC-2148


multimedia $*


social $*


Fixes for CVE-2016-3115 and CVE-2015-5600 for openssh are available via yum update on CentOS 6 and 7. The fix for CentOS 5 is to disable X11Forwarding


OpenSSL-1.0.2 is tentatively planned for EL7.4. It's not yet available. It won't be available until CentOS-7.4 is released at the earliest. Please do not ask as we don't know more than this. See https://bugzilla.redhat.com/show_bug.cgi?id=1276310 for more information.


Openvz systems are not supported here. OpenVZ kernels (uname -r output contains 'stab') do not have access to hardware resources, cannot load kernel modules needed for some firewall options, selinux, TUN/TAP support, ability to modify server time among other functions. You need to contact your provider for more assistance.


Evolution Bahhumbug pj phibs wolfy TrevorH Zathrus hughesjr range arrfab kbsingh


Thank you for your report $nick, ops have been notified. [say #centos-ops alert from $nick in $channel: @1] [say #centos-ops [ops-nicks]]


You are not running CentOS! Please read http://wiki.centos.org/AdditionalResources/OtherSpins for more information and ask your provider to give you real CentOS.


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.


social $*


Support issues with OVH provisioned boxes, using their images, need to be addressed by OVH themselves.


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.


In CentOS the packaging format is known as 'rpm' and the package management system is known as 'yum'; alternate package management systems, while available, are not supported in this venue and are not recommended.


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/


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.


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.


Please be patient after asking a support question. It often times takes a while to get an answer as the people that can assist you may not be watching IRC at the time.


paste $*


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 Redhat's backporting policies. If you're having problems with PCI compliance please refer to @backports, @cve and rpm -q --changelog packagename.


PHP 5.3 is available in the CentOS 5 tree as the php53 package. If you wish to upgrade from the php 5.1.6 packages, you will need to remove them first as they conflict with the newer php53 packages. This is by design.


The IUS project has php70u packages available. See https://ius.io or #iuscommunity for more information.




The packages that are available from pkgsrc.joyent.com are not supported in this venue. Please seek assistance from joyent.com


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


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.


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?'


For information on setting up postfix on CentOS, please see http://wiki.centos.org/HowTos/postfix


The #centos-ppc channel exists for people interested in the CentOS PowerPC platform.


There is no security. There is no privacy. People suck. When everyone realizes this life becomes easier. - (c) Bahhumbug


$1: Your amateur attempts at psychology are unlikely to get you far. Please cease this line of conversation, thank you.


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 http://pastebin.centos.org if more than 3 lines of text, to aid us in assisting you.


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


For assistance with recovering a lost or forgotten root password please see http://wiki.centos.org/TipsAndTricks/ResetRootPassword


For more information on PXE and CentOS please refer to http://wiki.centos.org/HowTos/PXE/PXE_Setup


You may find newer versions of the Python packages in both the EPEL and IUS repositories. Please see http://wiki.centos.org/AdditionalResources/Repositories for additional information. These versions install side-by-side with the system python so as not to cause problems.


For more information on RAID technology please see the wiki articles http://en.wikipedia.org/wiki/RAID and http://en.wikipedia.org/wiki/Standard_RAID_levels - additionally http://en.wikipedia.org/wiki/Non-standard_RAID_levels may be of interest.


For a good resource on Linux Software RAID please see both http://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.


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.


Linux reports ram usage differently than you might expect. Please see http://www.linuxatemyram.com/ for a detailed explanation


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


It will be ready when it's ready and not a day sooner. Repeatedly asking about a release date has a tendency to push that release back a few days.


You need to be using a nick that has been registered with Freenode services in order to join #centos and #centos-social. Information for which can be found at http://freenode.net/faq.shtml#nicksetup


For more information on the CentOS / Red Hat relationship you are encouraged to read http://community.redhat.com/centos-faq/


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/


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).


remind $*


scheduler add [apply seconds $1] "echo $nick: REMINDER - $2"


rpmforge $*


Additional packages are often in 3rd party repos. Information on additional CentOS repos is available at http://wiki.centos.org/AdditionalResources/Repositories Pay attention to the reference on yum-priorities.


RHEL 7.5 BETA Release Notes are available at https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7-beta/html/7.5_release_notes/index


Questions about RHEL are off topic in the #centos channels, please ask on #rhel instead


releasenotes $*


Please note that Rogue Wave Software is not associated with the CentOS Project in any manner.


There are several ways to become root on a Linux system. See http://wiki.centos.org/TipsAndTricks/BecomingRoot for more information


You can find information about how to reset a forgotten root password in the wiki http://wiki.centos.org/TipsAndTricks/ResetRootPassword


ifconfig $*


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 http://wiki.centos.org/AdditionalResources/Repositories


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.


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.


tutorial $*


sourcebuilds $*


For more information on the CentOS SCL (Software Collections) initiative please see https://wiki.centos.org/AdditionalResources/Repositories/SCL - Additionally you may also be interested in https://ius.io/IUSvsSCL/ and https://www.hogarthuk.com/?q=node/15 which discuss the pros and cons of SCL and IUS


selinuxbook $*


sebook $*


Please paste the single line of output from the following command into the channel: /usr/sbin/sestatus | head -1


For a basic and fun introduction to selinux type enforcement please take a look at https://github.com/mairin/selinux-coloring-book


Useful resources for SELinux: http://wiki.centos.org/HowTos/SELinux | http://wiki.centos.org/TipsAndTricks/SelinuxBooleans | http://docs.fedoraproject.org/en-US/Fedora/13/html/Security-Enhanced_Linux/ | http://www.youtube.com/watch?v=bQqX3RWn0Yw | http://opensource.com/business/13/11/selinux-policy-guide | http://freecomputerbooks.com/The-SELinux-Notebook-The-Foundations.html


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.


centoswebpanel $*


Illegal instruction errors on CentOS 6.8 are a known issue and seem to be with xen guests. There were packages released 2016/07/12 that should fix this problem - use NSS_DISABLE_HW_AES=1 yum update nss-softokn\* to get a version >= 3.14.3-23.3.el6_8 for the fix


For more information on the various CentOS Special Interest Groups please take a look at https://wiki.centos.org/SpecialInterestGroup


Support for any of the SIG projects is better handled via the centos-devel mailing list as they are the best suited for assisting their users. For more information please see http://wiki.centos.org/GettingHelp/ListInfo or register at https://lists.centos.org/mailman/listinfo/centos-devel


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.


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.


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.


You can find the source rpms for CentOS at http://vault.centos.org. Additionally you may read http://wiki.centos.org/Sources to learn about the git repository setup at http://git.centos.org and how to best make use of it.


There is a known issue with the current mod_spdy module for httpd. It is linked against a vulnerable openssl-1.0.1c and if you have it in use on your server you are still vulnerable to CVE-2014-0160. Please disable the module and restart httpd until they can release an update of their own.


Please take a look at http://wiki.centos.org/SpoonFeed for our views on spoonfeeding.


https://bugzilla.redhat.com/show_bug.cgi?id=1202858 is NOT applicable to CentOS. If you'll notice the Version is marked as 6.7 - there is no CentOS-6.7, nor is there a public release of RHEL-6.7. It's BETA.


For more information on the SSLv3 issue please see https://access.redhat.com/security/cve/CVE-2014-3566 and the knowledge base article linked from there.


openvz $*


New kernels for CentOS 6 (2.6.32-696.3.2.el6) and CentOS 7 (3.10.0-514.21.2.el7) have been built and published. You'll want to update glibc too so just yum update


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.


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.


There are several ways to become root on a Linux system. See http://wiki.centos.org/TipsAndTricks/BecomingRoot for more information


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.


There is also https://fedoramagazine.org/what-is-an-init-system/ as a general systemd overview.


For systemd documentation please see http://0pointer.de/blog/projects/systemd-for-admins-1.html . A SysVInit to systemd crib sheet is at http://fedoraproject.org/wiki/SysVinit_to_Systemd_Cheatsheet and other info on http://linoxide.com/linux-command/linux-systemd-commands/ Additionally https://access.redhat.com/articles/systemd-cheat-sheet may be of use as well.


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.


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 (http://wiki.centos.org/GettingHelp/ListInfo) or the forums (http://www.centos.org/forums/) for additional help.


For a list of triggers that centbot is aware of please see https://wiki.centos.org/irc/Centbot#head-78af71a2afa5a6782ee3b606ad1944dcde99c200


Please see http://jperrin.org/centos/boosting-centos-server-performance/ for more information on potential performance increases using tuned.


An excellent guide for users that are new to Linux can be found at http://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


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.


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.


There is no method to upgrade from CentOS-6 to CentOS-7 as the tool is currently broken and will almost certainly kill your system. There is no ETA on a fixed version being made available. Please see http://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool for more information. Please understand that this tool is currently BROKEN.


Information on USB key based installs can be found at http://wiki.centos.org/HowTos/InstallFromUSBkey


uselesspipe $*


You have been charged one community demerit point for the extraneous and useless use of 'cat' in a pipeline. You have made DMR cry.


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.


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


To determine what versions of packages are available please browse a nearby mirror. For a list of mirrors please see http://www.centos.org/download/mirrors/


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.


You are not running CentOS. Please read http://wiki.centos.org/AdditionalResources/OtherSpins and please ask your provider for further assistance.


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.


wunderground $*


The freenode web gateway is banned in #centos due to rampant abuse. Either install a real client or use an alternate gateway such as irccloud or kiwiirc if, for whatever reason, you can't install a real client. In either case you will need a registered nick to join the channel as well.


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.


A workaround for the wget symlink issue referenced in CVE-2014-4877 for CentOS-5 hosts is to add 'retr-symlinks=on' to /etc/wgetrc; for CentOS-6 and CentOS-7 you should run 'yum update'


For a more in-depth description of both CentOS the product and CentOS the project please see http://www.centos.org/about/ and http://wiki.centos.org/FAQ/General


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.


Repeatedly complaining about something that you got for free will very likely end up with you being unable to speak in the channel


The CentOS wiki is located at http://wiki.centos.org


As an interim solution until EPEL makes their wine packages available you may get wine for CentOS-7 from http://arrfab.net/attic/RPMS/7/x86_64/ = please do note that these packages are not signed, however they are being made available by a CentOS project member.


To validate ISO MD5 checksums from windows please see https://support.microsoft.com/en-us/kb/841290 and follow directions on that page.


worldtime $*


worldtime $*


i686 $*


Please see http://wiki.centos.org/Manuals/ReleaseNotes/Xen4-01 for more information on the Xen4CentOS project


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://mywiki.wooledge.org/XyProblem


Please put the _entire_ output from the yum command that is being problematic on http://pastebin.centos.org/ - include the command prompt where you enter the command right through to where it returns


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.


yumerror $*


ZFS support is available from the 3rd-party zfsonlinux kernel module available from http://zfsonlinux.org/. Please note that we cannot support ZFS or the systems that run it. For support please visit #zfsonlinux


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.

Translation of revision 22

zh-tw/irc/Centbot (last edited 2018-09-14 12:13:27 by TimothyLee)