How to Disable Network Manager on CentOS 7 Rumi, May 2, 2022 1. To disable the Network Manager service, perform the following steps: Disable Network Manager with the following commands: CentOS 6, CloudLinux 6, Red Hat Enterprise Linux 6 (RHEL), or Amazon Linux: service NetworkManager stop chkconfig NetworkManager off CentOS 7, CloudLinux 7, or RHEL 7: systemctl stop NetworkManager systemctl disable NetworkManager… Continue Reading
Fixing Vesta CP Exim Email Incoming error with T=local_delivery defer (-1): Malformed value “0MM” Rumi, December 24, 2021December 25, 2021 ******** Applicable for vesta cp 1.0.0-5 version) ******** If you lately encounter an issue with mail incoming with vesta cp after an auto update took place, your /var/log/exim/main.log shows something similar below- 2021-12-19 03:39:42 1mxheU-000374-0o == mail@domain.com R=localuser T=local_delivery defer (-1): Malformed value “0MM” (expansion of “${extract{6}{:}{${lookup{$l$…. Step-1 Finding vesta… 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
Configuring SpamAssassin for Postfix on CentOS Rumi, May 23, 2020 In the process of receiving email, spamassassin will stand between the outside world and the email services running on your server itself. If it finds, according to its definition rules and configuration, that an incoming message is spam, it will rewrite the subject line to clearly identify it as such…. Continue Reading
Install ClamAV on CentOS 6 Rumi, May 23, 2020 Step 1. First add yum repository your system. The EPEL repo is enabled by simply installing an RPM. Please use the command below to install the EPEL repository on your CentOS server. #CentOS 6 – 32-bit rpm -Uvh http://mirror.overthewire.com.au/pub/epel/6/i386/epel-release-6-8.noarch.rpm #CentOS 6 – 64-bit rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm Step 2. Install required ClamAV packages…. Continue Reading
Install SNMP and Configure the Community String For CentOS Rumi, April 23, 2020 Install SNMP Install the SNMPD service by running the following command: yum install net-snmp net-snmp-utils Once the service is installed, verify that it is set to start at startup by running: CentOS 6: chkconfig snmpd on CentOS 7: systemctl enable snmpd Continue Reading
Squid as Transparent Proxy on CentOs 6.4 Rumi, March 6, 2020 In this tutorial I am going to configure squid acting as transparent proxy what does it means? It means we have no part of configurations on the client end, just to setup squid in transparent proxy mode so it will sits between client and internet. And redirect their port 80 requests to 3128 port which is… Continue Reading
Install VirtualBox on Centos 6 / 7 Rumi, September 6, 2019 Step 1 – Add Required Yum Repositories Firstly you are required to add VirtualBox yum repository in your system. Download repository file from its official site and place it under at /etc/yum.repos.d/virtualbox.repo .First navigate to /etc/yum.repos.d/ directory and use one of below commands as per your operating system. cd /etc/yum.repos.d/ wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo… Continue Reading
Install webmin on centos 6 Rumi, August 8, 2019 Step 1 » Create a new file webmin.repo in /etc/yum.d/ and add the below code. [Webmin] name=Webmin Distribution Neutral #baseurl=http://download.webmin.com/download/yum mirrorlist=http://download.webmin.com/download/yum/mirrorlist enabled=1 Step 2 » Install webmin GPG key using below command. Continue Reading
Configure iSCSI Initiator (client) in CentOS / RHEL 6 Rumi, October 30, 2018 To use RHEL/CentOS 6 system as an iSCSI initiator or client, you must have iscsi-initiator-utils package installed. You can verify that this is installed on your system using the rpm command, as shown in the following example: $ rpm -qa | grep iscsi-initiator-utils Install the package if its not already… Continue Reading