Using terminal, specifically on Mac OSX, it often leads to messages like:
# ssh my.server.cxm -bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory # perl perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_CTYPE = "UTF-8", LANG = (unset) are supported and installed on your system. perl: warning: Falling back to the standard locale ("C").
to fix, add the following two lines:
to either /etc/sysconfig/i18n (CentOS 6) or /etc/locale.conf (CentOS 7)
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Install (missing) packages
E.g. zip package which is missing in default distribution (however unzip is included). See first package name, then used exact name to install.
# yum list zip # yum install zip.i386
In order to keep the system up-to-date with security patches and bug fixes it's advisable to enable automated updates.
# service yum-cron status
# yum install yum-cron # service yum-cron start # chkconfig yum-cron on
Configure: Enable the apply_updates parameter, we may also tweak some other value like random_sleep, which I effectively disable with value 1, because anacron already features a random delay.
# vi /etc/yum/yum-cron.conf ... apply_updates = yes ... random_sleep = 1 ...
# vi /etc/sysconfig/yum-cron ... DOWNLOAD_ONLY=no ... RANDOMWAIT="1" ...
Eventually adjust some parameters in /etc/anacrontab (since CentOS 6 anacron is the default for managing daily/weekly/monthly cron jobs and prevent several of them from running at the same time).
Transaction Check Error: file /etc/aliases from install of setup-2.5.58-9.el5.noarch conflicts with file from package da_exim-4.67-1.i386
file /etc/aliases from install of setup-2.5.58-9.el5.noarch conflicts with file from package da_exim-4.67-1.i386
(first update ends with error)
mv /etc/aliases /etc/aliases.bak yum clean all yum update rpm -Fvh --replacefiles /var/cache/yum/base/packages/setup-2.5.58-7.el5.noarch.rpm yum update mv /etc/aliases.bak /etc/aliases
Install EPEL repository
yum repolist yum install epel-release yum repolist
By default CentOS comes with SELinux enabled, which is good but quite a pain to administer so one may prefer to disable it.
# vi /etc/sysconfig/selinux SELINUX=disabled # reboot ... # sestatus SELinux status: disabled ...