Install Zabbix 5.x Monitoring Server on Ubuntu 20.04 Rumi, June 24, 2023 Zabbix is a free, open-source, and high-performance monitoring tool for servers, applications, and network devices. It uses agents to collect system metrics. It also monitors standard services such as SMTP or HTTP services and supports host monitoring via SNMP, TCP, and ICMP checks. It is designed for real-time monitoring of… Continue Reading
Getting started with Xen Virtualization On CentOS 7.x Rumi, June 24, 2023 Welcome to Getting started with Xen Virtualization On CentOS 7.x. Xen is an open-source bare-metal hypervisor which allows you to run different operating systems in parallel on a single host machine. This type of hypervisor is normally referred to as a hypervisortype 1 in Virtualization world. Meltdown and Spectre Mitigation on Xen 6.5 and… Continue Reading
Install Zabbix Agent on Ubuntu 20.04 Rumi, June 21, 2023 Zabbix agent is installed on the remote host (target) to monitor the hard drive, memory processor, etc. The agent collects data and sends back to Zabbix Server. Zabbix agents can use passive or active checks to pass information. In passive check, Zabbix server (poller) requests an agent for certain information, and the agent sends back a… Continue Reading
Virtualmin create a catch-all email account Rumi, June 21, 2023 This tutorial will cover how to setup a catch-all email account. Once finished, it will be the default destination for any email arriving at your domain, unless overridden by another email account or alias. It assumes you have logged into Virtualmin as the root user. You can make any email… Continue Reading
How to MERGE or JOIN multiple videos without re-encoding | With FREE tool Rumi, June 15, 2023 I must vouch this tool- it’s pretty cool and free/open source. It saved my work a lot! Continue Reading
Implementing DKIM in Zentyal MTA with SoGO Rumi, June 14, 2023 To implement this authentication mechanism, you can use a third party software called OpenDKIM. These are the steps you have to follow to deploy DKIM. 1. Install the necessary packages: sudo apt-get install -y opendkim opendkim-tools 2. Create the folder for the DKIM keys: sudo mkdir -vp /etc/opendkim/keys 3. Generate the DKIM keys: sudo… Continue Reading
OCI Object storage connect using WinSCP Rumi, May 31, 2023 Click New Session: Select File Protocol S3: Enter the previous generated connection details and Press Save and give it a name: Continue Reading
Mounting OCI bucket on CentOS 7 Linux Rumi, May 30, 2023June 14, 2023 Install s3fs-fuse In order to use this you have to enable EPEL Repository- sudo yum install epel-release sudo yum install s3fs-fuse [opc@linux8 ~]$ sudo yum install s3fs-fuse Last metadata expiration check: 0:00:41 ago on Sun 15 May 2022 05:40:13 PM CST. Dependencies resolved. ================================================================================================================================= Package Architecture Version Repository Size =================================================================================================================================… Continue Reading
Nginx Reverse Proxy with Sub Directory Mapping Rumi, May 30, 2023May 30, 2023 Setup Note: My web application has a sub-directory, 192.168.1.8:8088/messages, that I want to expose to the outside world as messages.mysite.com. I’ve gotten half way there but I seem to be stuck. My requirements are as follows Redirect the site from HTTP to HTTPS. As I cannot edit the links the… Continue Reading
Rsync upload local files without replacing remote files Rumi, May 27, 2023May 27, 2023 Disclaimer: This is basically one way sync- use at your own risk and dry run before any production deployment. Suppose you have a list of files on a remote host, some of which already exist locally. What you want is to transfer only those files that are not found locally…. Continue Reading