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CentOS7x_Install-Docker-playbook.yml
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CentOS7x_Install-Docker-playbook.yml
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---
################################################################################
# description: Installs Docker on CentOS7x
# usage: ansible-playbook CentOS7x_Install-Docker-playbook.yml --extra-vars 'HostOrGroup=YourServerOrGroupNameGoesHere'
# author: Ernest G. Wilson II <ErnestGWilsonII@gmail.com> (https://github.com/ernestgwilsonii)
# license: MIT
################################################################################
# Ansible Playbook options
# REF: http://docs.ansible.com/ansible/playbooks.html
#####################################################
- name: Install Docker on CentOS7x
hosts: "{{ HostOrGroup|default ('FATAL ERROR --> HostOrGroup NOT SET! You must specify either a Host or a Group name!') }}"
serial: "100%"
gather_facts: False
tasks:
# Install or configure repository used on the OS by yum
# REF: https://docs.ansible.com/ansible/yum_repository_module.html
##################################################################
# /etc/yum.repos.d/docker.repo
# https://docs.docker.com/engine/installation/linux/docker-ce/centos/#install-docker-ce
- name: Install repository docker-ce-stable
yum_repository:
name: docker-ce-stable
description: Docker Repository
file: docker
baseurl: https://download.docker.com/linux/centos/7/$basearch/stable
enabled: yes
gpgcheck: yes
gpgkey: https://download.docker.com/linux/centos/gpg
# Old repo
# - name: Install repository dockerrepo
# yum_repository:
# name: dockerrepo
# description: Docker Repository
# file: docker
# baseurl: https://yum.dockerproject.org/repo/main/centos/7
# enabled: yes
# gpgcheck: yes
# gpgkey: https://yum.dockerproject.org/gpg
# Execute command(s)
# REF: http://docs.ansible.com/ansible/command_module.html
##########################################################
- name: Enable IPv4 Forwarding via sysctl -w net.ipv4.ip_forward=1
command: /usr/sbin/sysctl -w net.ipv4.ip_forward=1
- name: Set (increase default) vm.max_map_count via sysctl -w vm.max_map_count=262144
command: /usr/sbin/sysctl -w vm.max_map_count=262144
- name: Set sysctl -w net.bridge.bridge-nf-call-iptables=1
command: /usr/sbin/sysctl -w net.bridge.bridge-nf-call-iptables=1
- name: Set sysctl -w net.bridge.bridge-nf-call-ip6tables=1
command: /usr/sbin/sysctl -w net.bridge.bridge-nf-call-ip6tables=1
# Update various configuration files
# REF: http://docs.ansible.com/ansible/lineinfile_module.html
#############################################################
- name: Populate value in /etc/sysctl.conf with net.ipv4.ip_forward=1
lineinfile:
dest: /etc/sysctl.conf
state: present
create: yes
backup: yes
owner: root
group: root
mode: 0644
line: 'net.ipv4.ip_forward=1'
- name: Populate value in /etc/sysctl.conf with vm.max_map_count=262144
lineinfile:
dest: /etc/sysctl.conf
state: present
create: yes
backup: yes
owner: root
group: root
mode: 0644
line: 'vm.max_map_count=262144'
- name: Populate value in /etc/sysctl.conf with net.bridge.bridge-nf-call-iptables=1
lineinfile:
dest: /etc/sysctl.conf
state: present
create: yes
backup: yes
owner: root
group: root
mode: 0644
line: 'net.bridge.bridge-nf-call-iptables=1'
- name: Populate value in /etc/sysctl.conf with net.bridge.bridge-nf-call-ip6tables=1
lineinfile:
dest: /etc/sysctl.conf
state: present
create: yes
backup: yes
owner: root
group: root
mode: 0644
line: 'net.bridge.bridge-nf-call-ip6tables=1'
# Install yum packages
# REF: http://docs.ansible.com/ansible/yum_module.html
######################################################
- name: Install bind-utils
yum:
name: bind-utils
state: latest
- name: Install bridge-utils
yum:
name: bridge-utils
state: latest
# brctl show
# https://github.com/docker/docker/releases
- name: Install docker-ce
yum:
name: docker-ce
state: latest
- name: Install python-pip
yum:
name: python-pip
state: latest
# Restart firewalld to make sure it is running OK before changing any rules
# REF: http://docs.ansible.com/ansible/service_module.html
##########################################################
# - name: Ensure the firewalld service is enabled and re-started before changing any rules
# service:
# name: firewalld
# enabled: yes
# state: restarted
# Update the firewalld configuration
# REF: http://docs.ansible.com/ansible/firewalld_module.html
############################################################
# - name: Update firewall to allow port TCP 2375 for incoming Docker Cloud connections
# firewalld:
# port: 2375/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port TCP 2376 for incoming docker-machine connections
# firewalld:
# port: 2376/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port TCP 2377 for incoming Docker cluster management connections
# firewalld:
# port: 2377/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port TCP 4789 for incoming Docker overlay network connections
# firewalld:
# port: 4789/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port UDP 4789 for incoming Docker overlay network connections
# firewalld:
# port: 4789/udp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port TCP 6783 for incoming Docker overlay network connections
# firewalld:
# port: 6783/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port UDP 6783 for incoming Docker overlay network connections
# firewalld:
# port: 6783/udp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port TCP 7946 for incoming Docker communication among nodes
# firewalld:
# port: 7946/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow port UDP 7946 for incoming Docker communication among nodes
# firewalld:
# port: 7946/udp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# - name: Update firewall to allow ports TCP 30000-32767 for incoming Docker swarm manager PublishedPort connections
# firewalld:
# port: 30000-32767/tcp
# permanent: true
# immediate: yes
# state: enabled
# zone: public
# iptables - Modify the systems iptables
# REF: http://docs.ansible.com/ansible/latest/iptables_module.html
##################################################################
- name: Update iptables to allow port TCP 2375 for incoming Docker Cloud connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: tcp
match: tcp
destination_port: 2375
comment: Allow port TCP 2375 for incoming Docker Cloud connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port TCP 2376 for incoming docker-machine connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: tcp
match: tcp
destination_port: 2376
comment: Allow port TCP 2376 for incoming docker-machine connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port TCP 2377 for incoming Docker cluster management connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: tcp
match: tcp
destination_port: 2377
comment: Allow port TCP 2377 for incoming Docker cluster management connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port TCP 4789 for incoming Docker overlay network connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: tcp
match: tcp
destination_port: 4789
comment: Allow port TCP 4789 for incoming Docker overlay network connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port UDP 4789 for incoming Docker overlay network connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: udp
match: udp
destination_port: 4789
comment: Allow port UDP 4789 for incoming Docker overlay network connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port TCP 6783 for incoming Docker overlay network connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: tcp
match: tcp
destination_port: 6783
comment: Allow port TCP 6783 for incoming Docker overlay network connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port UDP 6783 for incoming Docker overlay network connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: udp
match: udp
destination_port: 6783
comment: Allow port UDP 6783 for incoming Docker overlay network connections
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port TCP 7946 for incoming Docker communication among nodes
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: tcp
match: tcp
destination_port: 7946
comment: Allow port TCP 7946 for incoming Docker communication among nodes
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow port UDP 7946 for incoming Docker communication among nodes
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: udp
match: udp
destination_port: 7946
comment: Allow port UDP 7946 for incoming Docker communication among nodes
jump: ACCEPT
state: present
become: yes
- name: Update iptables to allow ports TCP 30000-32767 for incoming Docker swarm manager published port connections
iptables:
chain: INPUT
ctstate: NEW,ESTABLISHED,RELATED
protocol: udp
match: udp
destination_port: 30000:32767
comment: Allow ports TCP 30000-32767 for incoming Docker swarm manager published port connections
jump: ACCEPT
state: present
become: yes
# Execute command(s)
# REF: http://docs.ansible.com/ansible/command_module.html
##########################################################
- name: iptables -D INPUT -j REJECT --reject-with icmp-host-prohibited
command: iptables -D INPUT -j REJECT --reject-with icmp-host-prohibited
ignore_errors: true
- name: iptables -D FORWARD -j REJECT --reject-with icmp-host-prohibited
command: iptables -D FORWARD -j REJECT --reject-with icmp-host-prohibited
ignore_errors: true
- name: /usr/libexec/iptables/iptables.init save
command: /usr/libexec/iptables/iptables.init save
# cat /etc/sysconfig/iptables
# Use the copy module to copy various files into place
# REF: http://docs.ansible.com/ansible/copy_module.html
#######################################################
# /etc/docker/daemon.json
- name: Copy Docker configuration file daemon.json from Ansible files/Docker/etc_docker_daemon.json to Docker remote /etc/docker/daemon.json
copy:
src=files/Docker/etc_docker_daemon.json
dest=/etc/docker/daemon.json
owner=root
group=root
mode=0444
# Enable and start docker
# REF: http://docs.ansible.com/ansible/service_module.html
##########################################################
- name: Enable and start (or restart) the docker service
service:
name: docker
enabled: yes
state: restarted
# Note: Verify docker via SSH command line:
# systemctl status docker
# docker run hello-world
#
# More advanced verification:
# docker run -it ubuntu bash
# cat /etc/lsb-release
#
# To run docker as a normal user, add that user to the docker group:
# usermod -aG docker your_username
# get_url - Downloads files from HTTP, HTTPS, or FTP to node
# REF: http://docs.ansible.com/ansible/get_url_module.html
############################################################
# https://github.com/docker/machine/releases
- name: Download and install docker-machine
get_url:
url: https://github.com/docker/machine/releases/download/v0.13.0/docker-machine-Linux-x86_64
dest: /usr/local/bin/docker-machine
mode: 777
force: yes
# https://github.com/docker/compose/releases
- name: Download and install docker-compose
get_url:
url: https://github.com/docker/compose/releases/download/1.18.0/docker-compose-Linux-x86_64
dest: /usr/local/bin/docker-compose
mode: 777
force: yes
# Execute command(s)
# REF: http://docs.ansible.com/ansible/command_module.html
##########################################################
- name: Use pip to update and ensure pip is at the latest version
command: /usr/bin/pip install --upgrade pip
# Use pip to install and manage Python dependencies
# REF: http://docs.ansible.com/ansible/pip_module.html
######################################################
- name: Use pip to install docker-cloud
pip:
name: docker-cloud
- name: Use pip to install docker-py
pip:
name: docker-py