Red Hat Killing CentOS Linux, Fight for CentOS clone
RedHat, parent company of CentOS Linux announce it will stop supporting CentOS 8, the latest version of CentOS. CentOS is build from…
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Install PowerMTA
Install the requirments yum install unzip net-tools telnet git gdb -y If you already have a mail server remove it. yum remove…
PowerMTA test using telnet
To test PowerMTA using telnet, run telnet localhost 25 Now paste following content ehlo localhost mail from: admin@smtp1.serverok.in rcpt to: you@your-domain.com data…
PowerMTA IP Rotation
To setup IP rotation in PowerMTA, configure multiple IP on the server. Setup rDNS for each of these IP, point a sub…
Auto Start KVM Virtual Machine
To auto start a KVM Virtual Machine on boot time, use command virsh autostart VMNAME_HERE To disable a VM from auto starting,…
Oracle Linux
How to Install MySQL 5.7 on Oracle Linux 7 How to Migrate CentOS to Oracle Linux How to Install PHP 5.6 on…
Ubuntu Server 20.04 set static IP with netplan
First check if you have file If the file exists, make sure, you have the following content in it. Edit Replace all…
imunify360 find license details
To check if your imunify360 license is valid, run imunify360-agent rstatus Example [root@ldb002 ~]# imunify360-agent rstatus OK [root@ldb002 ~]# To get more…
Stop SSH bruteforce with endlessh
Endlessh is an open source SSH trapit. It send slow random banner string to attacker, wasting their time. Before you install endlessh,…
supervisorctl
supervisorctl is used to control supervisord. To reload all monitored processes, run supervisorctl reload To restart a monitored process, run supervisorctl restart…
pvdisplay
pvdisplay is used to display all physical volumes on a LVM. root@server12:~# pvdisplay — Physical volume — PV Name /dev/sda3 VG Name…