How to Install Supervisord on CentOS 7
Supervisor is a program used to monitor and control programs. It can auto startup application on server boot time, and restart if…
Linux
dpkg dependency problems not removing
When removing a package, I got the following error message root@82-165-118-245:/~# dpkg –remove psa-phpmyadmin dpkg: dependency problems prevent removal of psa-phpmyadmin: plesk-core…
dpkg package pre-removal script returned error
On a Plesk server, MySQL somehow went missing. When I tried to remove a package, I get error To fix this, I…
Cpanel find recently logged in users
To Find a list of Cpanel user logins, run cat /usr/local/cpanel/logs/session_log | grep NEW | grep ‘cpaneld’ | awk ‘{print $1″ “$6″…
Resize EC2 file system with lvm
On an EC2 server with an LVM file system, I need to increase the size of the / partition. First, increase the…
Run rsync if not running using cronjob
I want to rsync files from one server to another server every 5 minutes, but only want to start the rsync if…
How to Install memcached on CentOS Plesk Server
Install memcached daemon with command yum install Memcached Enable memcached to start on boot systemctl enable memcached Start memcached systemctl start memcached…
smartmontools
smartmontools is used to check the health of hard disks. To install smartmontools on CentOS, run yum install smartmontools The command line…
How to verify installed packages on Ubuntu/Debian
To verify the integrity of installed packages, you can use debsums utility. First of all install debsums with command apt install -y…
sleep-monitor system is about to suspend
On a remote Linux server running XFCE desktop, the server goes down randomly, on monitoring /var/log/syslog, i found the following message Jan…
View Past Performance Data With sar
sysstat stores past data in the directory /var/log/sa – for RHEL based OS /var/log/sysstat – for Debian based OS Each day log…