How to install Python 2.7.6 on CentOS 6.3

How to install Python 2.7.6 on CentOS 6.3

(6.2 and 6.4 okay too, probably others)

CentOS 6.2 ships with Python 2.6.6 and depends on that specific version. Be careful not to replace it or bad things will happen. If you need access to a newer version of Python you must compile it yourself and install it side-by-side with the system version.

Here are the steps necessary to install Python 2.7.6. Execute all the commands below as root. Either log in as root temporarily or use sudo.

[Read more…]

Installing workstation for managing Chef server

A workstation is a computer that is configured to run knife, to synchronize with the chef-repo, and interact with a single Chef server. The workstation is the location from which most users will do most of their work.

We need ti install on our workstation:

  • knife
  • chef-sdk
  • chef-repo
  • ruby


[Read more…]

Installing Chef on Centos 6

Today we will install chef server in our home lab based on proxmox 3.4.6. So we have installed server 2cpu, 2Gb memory, Centos 6.7

First of all I switched off selinux, and configured hostname of server in /etc/sysconfig/network and /etc/hosts

Let's go on:


# rpm -Uvh chef-server-core-12.1.2-1.el6.x86_64.rpm

# chef-server-ctl reconfigure

[Read more…]

How to monitor sql queries with zabbix

If you want to monitor some parameters in mysql database,  you can do it with ODBC monitoring in Zabbix.

ODBC monitoring corresponds to the Database monitor item type in the Zabbix frontend.

ODBC is a C programming language middle-ware API for accessing database management systems (DBMS). The ODBC concept was developed by Microsoft and later ported to other platforms.

[Read more…]

Free SSL certificate for 3 years and up to 100 domains

 More and more people reconfigured their sites to ssl connection. So I decided to use ssl certificate and secure connection on my blogs too.

The Chinese CA WoSign offers free SSL certificates which are valid for 2 years and may contain up to 100 domains each (multi-domain/SAN/UCC) which is very useful to host various domains on one single IP address (Better option than SNI if you still have Windows XP clients). Before you stop reading because you don't trust a Chinese company for your website encryption please keep in mind that you don't have to trust them at all! You generate the SSL key on your server and only send them the CSR (certificate signing request) which doesn't contain any private information.

[Read more…]