Tag: Linux
Set Up Postfix With Mailgun as SMTP Relay
Installing PHP 5 and MySQL 5.5 on Ubuntu 18.04
Fixing Nagios “error: Could not stat() command file”
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…
Nagios Error – CHECK_NRPE: (ssl_err != 5) Error – Could not complete SSL handshake
Fix Ubuntu Read Only File System
Removing non UTF-8 Characters
Setup Bind 9 DNS Logging and Statistics
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…
Installing master and slave DNS Servers using Bind 9 on Ubuntu
Encrypt and decrypt a file with OpenSSL
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…
Set Up Postfix With Mailgun as SMTP Relay
Installing PHP 5 and MySQL 5.5 on Ubuntu 18.04
Fixing Nagios “error: Could not stat() command file”

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…
Nagios Error – CHECK_NRPE: (ssl_err != 5) Error – Could not complete SSL handshake
Fix Ubuntu Read Only File System
Removing non UTF-8 Characters
Setup Bind 9 DNS Logging and Statistics

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…
Installing master and slave DNS Servers using Bind 9 on Ubuntu
Encrypt and decrypt a file with OpenSSL
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…