henrik

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

zekefast

#!/bin/bash

# It is probably redundant if you set settings mentioned in https://gist.github.com/zekefast/42273658939724ba7c7a .
# But anyway it will not hurt anybody (sure if you are not putting your production database to RAM :)).
#
# Look for more detailed description in follow articles:
# - http://blog.vergiss-blackjack.de/2011/02/run-postgresql-in-a-ram-disk/
#
# ATTENTION: 
#  DO NOT apply this approach if you store important data in postgresql cluster, because that could cause 

areichman

# Restart rsyslog so it re-opens its file pointer (e.g. during logrotate postrotate script)
# via https://access.redhat.com/solutions/232793
kill -HUP $(cat /var/run/syslogd.pid)

silveraid

# Create a folder for our new root structure
$ export centos_root='/centos_image/rootfs'
$ mkdir -p $centos_root
# initialize rpm database
$ rpm --root $centos_root --initdb
# download and install the centos-release package, it contains our repository sources
$ yum reinstall --downloadonly --downloaddir . centos-release
$ rpm --root $centos_root -ivh centos-release*.rpm
$ rpm --root $centos_root --import  $centos_root/etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
# install yum without docs and install only the english language files during the process

sdorsett

yum install -y epel-release
yum install -y bind-utils unzip jq
cd ~/
wget https://releases.hashicorp.com/consul/1.0.2/consul_1.0.2_linux_amd64.zip
unzip consul_1.0.2_linux_amd64.zip
mv consul /usr/local/bin/
adduser consul
mkdir /etc/consul.d
chown -R consul:consul /etc/consul.d/
mkdir /var/consul

ekreutz

Ansible variable precedence

Source: http://docs.ansible.com/ansible/latest/playbooks_variables.html#variable-precedence-where-should-i-put-a-variable

From least to most important

• command line values (for example, -u my_user, these are not variables)
• role defaults (defined in role/defaults/main.yml)
• inventory file or script group vars
• inventory group_vars/all

vpnwall-services

- hosts: all
  tasks:
  - name: Ansible delete file wildcard
    find:
      paths: /etc/wild_card/example
      patterns: "^he.*.txt"
      use_regex: true
    register: wildcard_files_to_delete

  - name: Ansible remove file wildcard