iomarian

# Source: https://gist.github.com/4e2fd2696ef7d5ce6a915a2eb2408e17

###################################################################
# How To Manage Production-Grade Kubernetes Clusters With Rancher #
# https://youtu.be/JFALdhtBxR8                                    #
###################################################################

# Additional Info:
# - Rancher: https://rancher.com/products/rancher
# - Rancher Fleet: GitOps Across A Large Number Of Kubernetes Clusters: https://youtu.be/rIH_2CUXmwM

iomarian

# source: http://st-on-it.blogspot.com/2010/01/how-to-move-folders-between-git.html
# First of all you need to have a clean clone of the source repository so we didn't screw the things up.

git clone git://server.com/my-repo1.git

# After that you need to do some preparations on the source repository, nuking all the entries except the folder you need to move. Use the following command

git filter-branch --subdirectory-filter your_dir -- -- all

# This will nuke all the other entries and their history, creating a clean git repository that contains only data and history from the directory you need. If you need to move several folders, you have to collect them in a single directory using the git mv command.

iomarian

#!/usr/bin/env bash

#####
# Script to install postfix
#####


DOMAIN="example.com"
EMAIL="haisum@example.com"
PASSWORD="example.com1*"

iomarian

Email server based on Dovecot, Postfix, MySQL, Rspamd and Debian 9 Stretch

MySQL database setup

Install MariaDB as a database management system DBMS

sudo apt install mariadb-server

Create a new database named srvmail for a mail server:

iomarian

$ apk add --no-cache curl
$ echo "cgroup /sys/fs/cgroup cgroup defaults 0 0" >> /etc/fstab

$ cat > /etc/cgconfig.conf <<EOF
mount {
  cpuacct = /cgroup/cpuacct;
  memory = /cgroup/memory;
  devices = /cgroup/devices;
  freezer = /cgroup/freezer;

iomarian

RHEL 7 Docker Rancher

Install Docker on all of the host machines:

yum upgrade -y
reboot

subscription-manager repos --enable rhel-7-server-extras-rpms
yum install -y docker

iomarian

#!/bin/bash
# blog: https://sysadmins.co.za/mail-server-virtual-users-mysql-postfixadmin-on-centos/

# dependencies
yum update -y
yum --enablerepo=centosplus install postfix mailx mutt -y
yum install dovecot mysql-server dovecot-mysql cyrus-sasl cyrus-sasl-devel -y

# mysql configuration
chkconfig mysqld on