There are some excellent instructions for hand editing the network scripts.
Transparent Huge Pages (THP) was introduced in RHEL 6. However, it wasn't turned on by default until RHEL 7.
RHEL/CentOS/Scientific Linux 7 has stopped using iptables and start now using firewalld which provides a dynamically managed firewall.
To convert a ppk file to something ssh can use.
Simple and straight forward.
# dig +short myip.opendns.com @resolver1.opendns.com
This is based on some excellent information from http://serverfault.com/questions/286159/how-to-disabled-password-authentication-for-specific-users-in-sshd
I wrote the original article based on Zabbix 1.8.4 and the template was missing some steps so I am updating the template adding some triggers to the template.
Some useful bash commands to parser Postfix logs.
Something I want to keep track of as it looks usful for servers that do more then Apache on them.
I am switching over to Zabbix it just works better then Zenoss for me. During the process I added in templates for postfix. Those are outlined here.