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Restic backup application - commands cheatsheet

Installation & config

1. add Retic repo
2. yum install restic

add a Restic credential file to root

vim /root/.restic

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ISPConfig Migration
====================

Danke: http://i-dyllen.dk/wordpress/?p=244

Vorbereitungen:
 - Aktualisieren den alten Server auf die neueste Version von ISPConfig 3
 - Installiere den neuen Server mit der neuesten Version von ISPConfig 3
   (gleiche Pakete wie die Ursprungsserver und dieselben speziellen Konfigurationen von Apache Modulen etc.)
 - apt-get install rsync (auf beiden Systemen)

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#!/bin/bash
RANCHERENDPOINT=https://your_rancher_endpoint/v3
# The name of the cluster where the user needs to be added
CLUSTERNAME=your_cluster_name
# Username, password and realname of the user
USERNAME=username
PASSWORD=password
REALNAME=myrealname
# Role of the user
GLOBALROLE=user

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ansible -i [inventory] -m shell -a 'fdisk -l' --become -K -l [host|group] all

### APT

## Update all packages

$ ansible -m apt -a 'upgrade=yes update_cache=yes cache_valid_time=86400  force_apt_get=yes' --become -K -l [host|group] all

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$ wget https://github.com/grafana/loki/releases/download/v2.4.1/promtail-linux-amd64.zip
$ unzip promtail-linux-amd64.zip
$ mv promtail-linux-amd64 /usr/local/bin/
$ ln -s /usr/local/bin/promtail-linux-amd64 /usr/local/bin/promtail

$ useradd --system promtail
$ gpasswd -a promtail adm
$ nano /etc/systemd/system/promtail.service
$ systemctl daemon-reload
$ systemctl start promtail.service

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sudo apt-get install debian-archive-keyring
sudo sh -c "echo 'deb http://deb.debian.org/debian buster-backports main' >> /etc/apt/sources.list"
sudo apt-get update
sudo apt-get -y -t buster-backports install libseccomp2
sudo sh -c "echo 'deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list"
wget -nv https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable/Debian_10/Release.key -O Release.key
sudo apt-key add - < Release.key
sudo apt-get update -qq
sudo apt-get -qq -y install podman
sudo mkdir -p /etc/containers

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Copy this formula into an Excel cell to generate a random 9-character password. Then
Copy & Paste Special (as value) in place in order to avoid the cell being continuosly
re-evaluated. Formula taken from:
http://ficility.net/2013/04/26/easy-excel-based-password-generator/.

=CHAR(RANDBETWEEN(65;90))&CHAR(RANDBETWEEN(97;122))&CHAR(RANDBETWEEN(97;122))&CHAR(RANDBETWEEN(65;90))&RANDBETWEEN(1000;9999)&CHAR(RANDBETWEEN(42;43))

>>> If it does not work, try like this (commas instead of semicolons):

=CHAR(RANDBETWEEN(65,90))&CHAR(RANDBETWEEN(97,122))&CHAR(RANDBETWEEN(97,122))&CHAR(RANDBETWEEN(65,90))&RANDBETWEEN(1000,9999)&CHAR(RANDBETWEEN(42,43))

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Create NFS Volumes:

Creating the NFS Volume:

$ docker volume create --driver local \
  --opt type=nfs \
  --opt o=addr=192.168.1.115,uid=1000,gid=1000,rw \
  --opt device=:/mnt/volumes/mysql-test \
  mysql-test-1

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#!/bin/bash
# Proof of concept of running playbooks in AWX and recording them in ARA
# From a vanilla CentOS8 image: https://cloud.centos.org/centos/8/x86_64/images/CentOS-8-GenericCloud-8.1.1911-20200113.3.x86_64.qcow2

# Add local bin directory to PATH so we can use things installed with "pip install --user"
export PATH=$PATH:~/.local/bin

dnf -y update

# Install Ansible and Python3

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Install Prerequisites on ALL (Worker and Master) Nodes

Let's remove any old versions of Docker if they exist:

sudo yum remove docker \
                  docker-common \
                  docker-selinux \
                  docker-engine