Covering tips that I find usefull
Debian 11 uses Joe for visudo how to exit and how to change it to vi.
I have never used joe as an editor so when I ran visudo on a fresh install of Debian 11 I got stuck. I didn’t […]
Linux Admin
Preventing emails going out from your development environment.
This is just a short one. In /etc/postfix/main.cf Add the following line at the bottom. virtual_alias_maps = static:<your_username> Then in Thunderbird you can collect local […]
Extend the life of your Rasberry Pi SD card.
This is a simple one. Continuously writing logs to a Pi SD card will reduce it’s life span. Simply add these lines to your /etc/fstab […]
Attacked by an Amazon EC2 hosted botnet (Part 2) DNS server under attack.
So earlier this evening things started to slow down again and upon investigation discovered the attackers were now hitting my DNS servers. I applied the […]
Attacked by an Amazon EC2 hosted botnet.
One of my servers was struck by a password brute forcing attack from hundreds of IPs. This was initially mitigated by adding a new fail2ban […]
Replace IP address across multiple SPF records in a MySQL server.
Just had to do this for a PowerDNS server. UPDATE `records` SET `content` = replace(content, ‘old_ip’, ‘new_ip’);
Install and Automate LetsEncrypt SSL on your Plesk Login
When you use the LetsEncrypt module it handles the renewals of your encrypted domains without any issue. However it doesn’t appear to have any method […]
Unable to find backend willing to host … for potential supermaster
Fixing the “Unable to find backend willing to host hostname for potential supermaster” Error. I had set up many PowerDNS master slave nameserver clusters before […]
Bash Scripting Random Numbers
I needed to create a script that would pick a random line from a file. The $RANDOM variable isn’t the easiest to use as it […]
My Site is now encrypted using letsencrypt ssl cert on plesk 12.5 and Centos 6.7.
This server is now running a Free SSL Certificate from LetsEncrypt. I am running this server on Centos 6.7 and have plesk 12.5 installed. Now […]