Cloudera Hadoop Deployment using Cloudera Manager Cookbook [CentOS 6.6]
Deploying an enterprise Apache Hadoop (CDH) cluster across dozens of hosts requires consistent OS-level tuning across every node (kernel parameters, Transpar...
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Chef Workstation Setup on Windows Machine.
Developing and testing Chef cookbooks locally on a Windows workstation requires three core components: the Chef Development Kit (ChefDK) (since superseded by...
Check Port on Remote Server CentOS 6.6/RHEL 6
When troubleshooting network connectivity or firewall rules between servers, you often need to verify whether a specific TCP or UDP port is open on a remote ...
LUKS Disk encryption for CentOS 6.6/RHEL 6
Linux Unified Key Setup (LUKS) is the standard on-disk block encryption format for Linux. Using the kernel’s dm-crypt device-mapper subsystem and the cryptse...
Mysql Database Moving Data Directory to New Location.
When the root or /var partition on a Linux database server runs low on disk space, a common remediation is to relocate MySQL’s data directory (datadir, locat...
Mysql Database Disk Usage.
When a MySQL or MariaDB server runs low on disk space, identifying which schemas and tables consume the most storage is the first step in capacity troublesho...
Installing python 2.7.x on Centos 6.5/6.6
CentOS 6 was distributed with Python 2.6, while some older applications require Python 2.7. This guide describes two historical installation approaches: usin...
Zabbix Database Backup Script for postgres and mysql.
Regular database backups are essential after deploying a Zabbix monitoring server. Depending on your recovery requirements and disk capacity, you can take ei...
Installing Zabbix Version 2.4 Offline (Zabbix Server without Internet).
There might be situations where you have a remote/zabbix server which does not have internet connectivity, due to security or other reasons. So we create a ...
Zabbix Template Creation using CSV file.
In zabbix we dont have a better way to capture snmptraps. we have to manually create an item and corresponfding trigger to handle a trap arriving from the de...