PHP-FPM uses a daemon to manage the multiple PHP versions on a single server. Together we can use Apache and PHP-FPM to host multiple PHP web sites, each using a different versions of PHP at the same time. This is useful because different applications may require different versions of PHP. HP-FPM…
If you ever find that you need to send out email from your server via a relay, as you cannot send them out directly from your server’s IP (eg its been black listed). Relaying the mail via Mailgun is a good option. To do this you will need to setup…
While I fully understand the security implications of running these legacy and unsupported versions of PHP and MySQL. I had an application that had these dependancies, but I wanted to move to a supported LTS version of Ubuntu. Once you have Ubuntu 18.04 installed with Apache 2, you can use…
One common configuration issue with Nagios 3 running on Ubuntu is getting the Service Commands menu to work correctly in the web portal. By default, it is visible in the UI, but disabled on the server backend. In Ubuntu, you will recieve the cryptic error Could not stat() command file pointing to /var/lib/nagios3/rw/nagios.cmd. This can…
There is a known error when your Nagios Monitoring Server is running Ubuntu 16.04 and you are trying to monitor a server with a newer version of Ubuntu like Ubuntu 18.04. In Ubuntu 18.04, NRPE uses a 2048 bit DH key, but in earlier versions of NRPE use a 512…
I had an issue today where a Linux VM’s file system was read only after a SAN issue. When a Linux server like Ubuntu looses access to its disks, the file system can go into read only to protect it from corruption. To resolve this you will need to run the following command:…
While generating a PDF from a dynamically created HTML file, I found that the PDF generation failed as there were non UTF-8 characters in the HTML file. To try and find these characters, I used the strings command with the -n 8 switch to remove any non UTF characters: I was…
Logging To setup logging in Bind 9 you will need to complete the following: First configure logging in your named.conf.options file Add this at the bottom of the file: Now create a directory for the logs. Unless you edit your /etc/apparmor.d/usr.sbin.named, you will have to use the default directory of…
On the master server install bind server and bind utilities: Once bind has been installed, you need to setup the zones you will be hosting. In this example, domain.com is your domain name, 60.60.20.15 is the IP address or your slave server, and 50.50.20.15 is the IP address of your…
I was recently looking for a way of encrypting files with a salted encryption algruthum, and found this can be done using OpenSSL. It’s really easy and much more secure that using a zip product. You do this by using the following syntax: openssl des3 -salt -in /path/FileToBeEncrypted -out /path/EncryptedFileName…
