Benchmark Linux
Some great scripts for stress testing and benchmark tests: Linux benchmark scripts and tools
Administration
How To Install Dig Utility on CentOS and Debian
CentOS For CentOS, the DIG tool is a part of the BIND Utilities so you need to install them. To install the BIND Utilities, type the following: Debian Update Debian Install dnsutils package with the following command: Check dig
Freeing disk space on your Linux server
To find out where disk space is being used: Get to the root of your machine by running Run Note which directories are using a lot of disk space. cd into one of the big directories. Run to see which files are using a lot of space. Delete any you don’t need. Repeat steps to … Read more
Change Windows RDP SSL Cert from Default to Comodo Free SSL
This article describes how to change the SSL cert for you Windows server to match a hostname so that when you remote desktop to a windows server, you don’t get a warning for the identity and the SSL cert. Go to Sectigo (Comodo) and sign up for a free ssl. https://ssl.comodo.com/free-ssl-certificate.php First, generate a CSR. … Read more
Network Throughput Testing with iPerf
iPerf is a command-line tool used in diagnosing network speed issues by measuring the maximum network throughput a server can handle. It is particularly useful when experiencing network speed issues, as you can use iPerf to determine which server is unable to reach maximum throughput. Basic usage: run iperf -s on machine A then go … Read more
Accessing Website with IP NAT Hairpinning
The term hairpinning comes from the fact that the traffic comes from one source into a router or similar devices, makes a U-turn and goes back the same way it came. Visualize this and you see something that looks like a hairpin. Hairpin NAT is a useful technique for accessing an internal server using a … Read more
How to Set or Change Hostname in CentOS 7
Use this information when changing the hostname in centos 7. Ways to show the hostname How to change the hostname. In order to change or set a CentOS 7 machine hostname, use the hostnamectl command as shown in the below command excerpt. In order to apply the new hostname, a system reboot is required, issue … Read more
Setting up cron to remove emails from an utility email
Sometimes you need to add an email to receive alerts and other emails for you system or business. WThen after a while the email account is full of emails. One method to automate this is to set up a cron in cpanel to remove the emails. Here is an example.
Smartmon tools Windows
Some Smartmon tools https://github.com/v-zhuravlev/zbx-smartctl https://share.zabbix.com/storage-devices/smart-monitoring-with-smartmontools-lld https://www.smartmontools.org/wiki/Download#InstalltheWindowspackage
Install Lets encrypt on WHM and cPanel
letsEncrypt is an alternative AutoSSL provider for users who opt to not use the default AutoSSL Powered by cPanel provider. Installing the LetsEncrypt provider is a straightforward process that involves running one command. ProcedureInstallation of the officially supported AutoSSL – Let’s Encrypt provider can be completed by performing the following command via SSH as the … Read more