Install transmission on Centos 7 Rumi, August 22, 2023 Step 1. First, you need to enable the EPEL repository on your system. yum install epel-release yum -y update Step 2. Installing Transmission on CentOS 7. Just run the following command to install Transmission: yum install transmission-cli transmission-common transmission-daemon Once complete, you can verify Transmission is installed by running the… Continue Reading
Add User to Sudoers on CentOS Rumi, March 21, 2023March 21, 2023 You can do this in 2 methods- however, IMHO method-2 usually works great for me. Method-1 Step 1: Verify the Wheel Group is Enabled Your CentOS 7 installation may or may not have the wheel group enabled. Open the configuration file by entering the command: visudo Scroll through the configuration… Continue Reading
Remove Old Unused Kernels in CentOS Rumi, January 26, 2023 To display the current version of Linux (kernel) running on your system, run this command. # uname -sr Linux 3.10.0-327.10.1.el7.x86_64 List All Installed Kernels on System You can list all kernel images installed on your system like this. # rpm -q kernel kernel-3.10.0-229.el7.x86_64 kernel-3.10.0-229.14.1.el7.x86_64 kernel-3.10.0-327.3.1.el7.x86_64 kernel-3.10.0-327.10.1.el7.x86_64 Removing Old/Unused Kernels on… Continue Reading
CentOS 7 Server Installation with Software RAID Rumi, September 4, 2022 Install the Operating System Boot from the USB flash drive and select Install CentOS 7 When the welcome screen of the CentOS installer appears, choose your language and just click on Continue Continue Reading
Install MySQL 5.7 on CentOS 7 Rumi, August 10, 2022 Preqrequsite: It’s better to have installed development tools and disable NetworkManager for a produciton envrionment. You can optionally follow the steps- Disabling NetworkManager: systemctl stop NetworkManager systemctl disable NetworkManager Install Development Tools: yum group install “Development Tools” Remove MariaDB pre-installed libraries- yum -y remove mariadb-libs Enable MySQL Repository First of… Continue Reading
Postfix SMTP Rotating IP using IPTables Rumi, August 1, 2022 I got 5 Public IPs. i’m Gonna configure them, so Postfix can use multiple interfaces/ips for outgoing smtp connections. First we need creating Interface aliases for those 5 public IPs. In my system, using centos: # cd /etc/sysconfig/network-scripts/ # cp ifcfg-eth0 ifcfg-eth0:1 Edit ifcfg-eth0:1 # vi ifcfg-eth0\:1 DEVICE=eth0 <– default… Continue Reading
Install MariaDB 10 on Centos or Springdale Linux Rumi, June 18, 2022 Step 1: Add MariaDB Yum Repository Start by adding the MariaDB YUM repository file MariaDB.repo for RHEL/CentOS and Fedora systems. # nano /etc/yum.repos.d/MariaDB.repo Now add the following lines to your respective Linux distribution version as shown. [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/10.1/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1 Continue Reading
Disable ipv6 on Linux Machine Rumi, June 18, 2022 Disable on Centos/RHEL system: 1. Append below lines in /etc/sysctl.conf: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 NOTE : To disable IPv6 on a single interface add below lines to /etc/sysctl.conf : net.ipv6.conf.[interface].disable_ipv6 = 1 ### put interface name here [interface] net.ipv6.conf.default.disable_ipv6 = 1 2. To make the settings affective, execute… Continue Reading
Install Development Tool on CentOS and Debian Rumi, June 17, 2022 Well, in my working domain I face these tools to be installed, so that most of the dependent tools or programs that need to be deployed later don’t face much of dependency issue. So here goes the installation process for both the OS. On CentOS/RHEL system use the follwoing command… Continue Reading
Install VirtualBox legacy version 5.x on CentOS 7 Rumi, June 11, 2022 Install Dependencies Install Extra Packages for Enterprise Linux (EPEL) # sudo yum install epel-release wget -y Install Dynamic Kernel Module Support (DKMS) # sudo yum –enablerepo=epel install dkms -y This will install quite a few packages: Install Development Tools # sudo yum groupinstall “Development Tools” -y Continue Reading