Keep it Simple

Will configure one single EC2 instance as a Victoria Metrics server to be used as Promethues storage. The access to VM(victoria metrics) i...

Locks in postgres Find locks select pid, state, usename, query, query_start from pg_stat_activity where pid in ( select pid from pg_l...

Enable stats Reporting is provided if you enable stats into its config. The setting is described at https://cbonte.github.io/haproxy-dcon...

There are times when I want to see the security groups on an AWS region. Nothing special really you can always use the aws cli :) But wait...

This post shows how you can inspect docker containers traffic with tcpdump on linux. First find the docker names and the mac addresses....

Ansible provides a convenient solution to encrypt sensitive data such as passwords, secrets, etc. - Ansible Vault . This post shows how to ...

There are times when you want to try a specific revision of a package that is under a specific git revision. The general syntax is pip...

How to send emails trough a smart relay that uses SASL and TLS I used: CentOS Linux release 7.3.1611 postfix-2.10.1-6.el7.x86_64...

Zabbix server under Selinux (CentOS 7) When running zabbix server under Selinux out of the box when you start systemctl st...

From time to time I found in MongoDB collections that have characters that get interpreted by the mongo shell in a different way and you ca...

In case you need it ... Obtain access to the database for read/write (for mysql this is what you need) update zabbix.users set passwd=...

Netcat is a very versatile program used for network communications - the place to find it is . Often I need to test different programs wi...

Dropbox is a very popular service for file storage, the way the service works will synchronize by default all your files across your devic...

On a newer editors (compared with Vim or Emacs) is Sublime Text . Has many useful features and is quite popular these days, combined with ...

Vagrant doesn't have an official provider for libvirt but there is a plugin that allows to run via libvirt KVM on Linux. First you wo...

The program supervisor written in python is used to supervise long running processes. In case that a long running process will stop (crash...

I was trying to make a simple bash pre-receive hook into Gitlab and got one of this # pre-receive hook #!/bin/bash `knife node show` ...

Vim is the editor for anybody using the cli on daily bases. One useful feature it has is the find/grep into files. Obviously you can exit or...

I've started programming seriously Chef cookbooks by a while but always felts is something missing ... Well I didn't have jump t...

AWS replaced their java based tool with a neat python package for linux (didn't try the windows based ones yet ...). Why are these tools...