Install security plugin for yum

Hello, To see if this is installed and enabled, look under /etc/yum/pluginconf.d/security.conf — it should have a line that reads “enabled=1”. If not, you’ll want to enable that. root@server01[~]#yum install yum-security -y After you install the yum security plugin you will be able to check for only security updates. root@server01[~]#yum –security update Loaded plugins: presto, […]

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Exim : retry time not reached for any host after a long failure period

The issue is because of the corrupted exim db files. Goto /var/spool/exim/db and delete files: retry , retry.lockfile , wait-remote_smtp, wait-remote_smtp.lockfile /etc/init.d/exim restart it should resolve your issue

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How to use MySQLTuner ?

Note : You’d need to be logged in as root user before to run the MySQLTuner script. Step 1 :  Log into your server with a root or sudo user via SSH. Step 2 : Use the below command to download and execute : wget mysqltuner.pl Step 3 : You’d need to assign 775 permissions for the script: chmod 775 mysqltuner.pl Step 4 : […]

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