Setup mail server on centos 7 using postfix and dovecot Rumi, March 30, 2021 Installing packages Step 1 » Assign hostname for the server using the below command. [root@krizna ~]# hostnamectl set-hostname mail.krizna.com Step 2 » Make a host entry with your IP in /etc/hosts file. 172.27.0.51 mail.krizna.com Step 3 » Now start installing packages. [root@krizna ~]# yum -y install postfix dovecot After package… Continue Reading
Sectigo SSL certificate installation on Zimbra Rumi, March 30, 2021 1. Login to your Zimbra Admin Console using a browser. 2. In the left navigation pane under Home click Configure. Click Certificate. 3. On the right of the Zimbra Admin console click on the settings icon and select Install Certificate. 4. The Certificate Installation Wizard will pop up. 5. Under… Continue Reading
Install LAMP with PHP 7.4 on FastCGI/CGI configuration on CentOS 7 Rumi, March 24, 2021 Step 1 – Setup Yum Repository In the first step install all the required yum repositories in your system used in the remaining tutorial for various installations. You are adding REMI, EPEL, Webtatic & MySQL community server repositories in your system. CentOS / RHEL 7 yum install epel-release rpm -Uvh… Continue Reading
How to enable Proxy Settings for Yum Command on RHEL / CentOS Servers Rumi, March 24, 2021 This can be easily achieved with yum config file “/etc/yum.conf“. Under main section define the proxy settings like below: ……………… proxy=http://<Proxy-Server-IP-Address>:<Proxy_Port> proxy_username=<Proxy-User-Name> proxy_password=<Proxy-Password> ……………… Save and exit the file and start using the yum command. Sample yum Config file with proxy settings is shown below : Continue Reading
enable SNMP on Xen (XCP-NG) hypervisors Rumi, March 5, 2021 There are six steps to correctly configuring SNMP on your Citrix Xen hypervisor. These steps don’t require a system restart and are non-service affecting. To start, we assume you’re running Xen v6.x or v7.x, and are logged into the Xen CLI as root. 1. Enable the SNMP daemon Enable the… Continue Reading
Install Rainloop on PHP 5.6 on Debian 8 LAMP Rumi, February 12, 2021 Step-1: Install LAMP on Debian I’ve used a bash script to install LAMP. You may find it useful. #!/bin/bash ######################################################## ### This script is created by Hasn T. Emdad Rumi <h.t.emdad@gmail.com>. ### Released under GPL 2.0 licensing ### Date: 12-Aug-2016 ######################################################## echo “Updating Debian Repository…” apt-get install debian-keyring debian-archive-keyring -y… Continue Reading
E: Release file for http://archive.debian.org/debian/dists/jessie-backports/InRelease is expired (invalid since 715d 18h 14min 9s). Updates for this repository will not be applied Update Wheezy or Jessie Repo Rumi, February 6, 2021 Wheezy and jessie both has gone EOL and repos too. archive repo doesn’t seem to usually work either. So here’s a little trick that worked for me. Below is my repo.list file- deb http://archive.debian.org/debian jessie main deb http://archive.debian.org/debian-archive/debian-security/ jessie updates/ma$ #deb http://security.debian.org/ jessie/updates non-free contrib main #deb http://mirrors.ocf.berkeley.edu/debian/ jessie-updates main… Continue Reading
Updating Webmin Logo Rumi, January 21, 2021January 21, 2021 On a default installation, your Webmin login page looks like below: To suppress both the Webmin logo and the “Webmin” text from the login page, add below to Webmin > Webmin Configuration > Webmin Themes > Theme Extensions: Continue Reading
Wget, Apt and Git behind proxy Rumi, December 22, 2020 For Wget Add/Comment out below line(s) in file ~/.wgetrc or /etc/wgetrc: http_proxy = http://[Proxy_Server]:[port] https_proxy = http://[Proxy_Server]:[port] ftp_proxy = http://[Proxy_Server]:[port] For Apt Create a new configuration file named proxy.conf.sudo touch /etc/apt/apt.conf.d/proxy.conf Open the proxy.conf file in a text editor.sudo vi /etc/apt/apt.conf.d/proxy.conf Paste it as following: Acquire { HTTP::proxy “http://127.0.0.1:8080”; HTTPS::proxy… Continue Reading
How to fix CentOS 5 or 6 error: YumRepo Error: All mirror URLs are not using ftp, http[s] or file Rumi, December 6, 2020July 9, 2021 The error looks like- And here goes the resolution (please carefully update/use the exact CentOS version you are using, in my case it was CentOS 6.9) 1. Go to /etc/yum.repos.d/ directory: # cd /etc/yum.repos.d/ 2. Make copy of original file: # cp CentOS-Base.repo CentOS-Base.repo.old 3. Open and edit file with… Continue Reading