Merge pull request #309 from geerlingguy/221-orchestration-tests

Issue #221: Add tests for current multi-server ad-hoc orchestration examples.

Author: geerlingguy

.travis.yml

@@ -80,9 +80,7 @@ env:
   - playbook: nodejs-role.yml
     distro: centos7
 
-  # TODO: Not easy to test in CI at this time.
-  # - playbook: orchestration.yml
-  #   distro: ubuntu2004
+  - shell_script: orchestration.sh
 
   - playbook: security.yml
     distro: centos8

orchestration/README.md

@@ -4,7 +4,7 @@ Ansible playbooks are flexible and powerful. But sometimes, you just need to run
 
 Just like the device in Ender's Game, the `ansible` command allows you to run commands or call Ansible modules immediately on one or one hundred of servers.
 
-This simple Vagrantfile configures three Virtual Machines using Vagrant and VirtualBox: `app1`, `app2`, and `db`, to emulate a small-scale real-world infrastructure (two application servers and a database server), so you can practice running `ansible` commands across them, and work on a flexible Ansible inventory.
+This project configures three Virtual Machines using Vagrant and VirtualBox: `app1`, `app2`, and `db`, to emulate a small-scale real-world infrastructure (two application servers and a database server), so you can practice running `ansible` commands across them, and work on a flexible Ansible inventory.
 
 ## Quick Start Guide
 

orchestration/Vagrantfile

@@ -5,7 +5,7 @@ VAGRANTFILE_API_VERSION = "2"
 
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   # General Vagrant VM configuration.
-  config.vm.box = "geerlingguy/centos7"
+  config.vm.box = "geerlingguy/centos8"
   config.ssh.insert_key = false
   config.vm.synced_folder ".", "/vagrant", disabled: true
   config.vm.provider :virtualbox do |v|

orchestration/scripts/ansible.cfg

@@ -0,0 +1,3 @@
+[defaults]
+inventory = hosts.ini
+nocows = True

orchestration/scripts/app.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+#
+# App server orchestration ad-hoc tasks.
+set -e
+
+# Configure Django on app server.
+ansible app -b -m yum -a "name=python3-pip state=present"
+ansible app -b -m pip -a "name=django<4 state=present"
+
+# Check Django version.
+ansible app -a "python3 -m django --version"
+
+# Other commands from the book.
+# ansible app -b -a "systemctl status chronyd"
+ansible app -b -m group -a "name=admin state=present"
+ansible app -b -m user -a "name=johndoe group=admin createhome=yes"
+ansible app -b -m user -a "name=johndoe state=absent remove=yes"
+ansible app -b -m package -a "name=git state=present"

orchestration/scripts/db.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+#
+# Database server orchestration ad-hoc tasks.
+set -e
+
+# Configure MySQL (MariaDB) server.
+ansible db -b -m yum -a "name=mariadb-server state=present"
+ansible db -b -m service -a "name=mariadb state=started enabled=yes"
+
+# Configure firewalld.
+ansible db -b -m yum -a "name=firewalld state=present"
+ansible db -b -m service -a "name=firewalld state=started enabled=yes"
+ansible db -b -m firewalld -a "zone=database state=present permanent=yes"
+ansible db -b -m firewalld -a "source=192.168.60.0/24 zone=database state=enabled permanent=yes"
+ansible db -b -m firewalld -a "port=3306/tcp zone=database state=enabled permanent=yes"
+
+# Configure DB user for Django.
+ansible db -b -m yum -a "name=python3-PyMySQL state=present"
+ansible db -b -m mysql_user -a "name=django host=% password=12345 priv=*.*:ALL state=present"

orchestration/scripts/hosts.ini

@@ -0,0 +1,6 @@
+[multi]
+app
+db
+
+[multi:vars]
+ansible_connection=docker

orchestration/scripts/multi.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+#
+# Multi-server tests for the orchestration example.
+set -e
+
+# Other commands from the book.
+ansible multi -b -m yum -a "name=chrony state=present"
+ansible multi -m stat -a "path=/etc/environment"
+ansible multi -m copy -a "src=/etc/hosts dest=/tmp/hosts"
+ansible multi -b -m fetch -a "src=/etc/hosts dest=/tmp"
+ansible multi -m file -a "dest=/tmp/test mode=644 state=directory"
+ansible multi -m file -a "dest=/tmp/test state=absent"
+ansible multi -b -B 3600 -P 0 -a "yum -y update"

tests/orchestration.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+#
+# Orchestration tests.
+set -e
+
+# Make sure pip3 is available.
+sudo apt-get update
+sudo apt-get install -y python3-pip python3-setuptools
+pip3 install --upgrade setuptools pip
+
+# Install dependencies.
+sudo pip3 install ansible
+
+cd orchestration/scripts
+
+# Test Django app installation.
+docker run -d --name app -p 80:80 --privileged -v /sys/fs/cgroup:/sys/fs/cgroup:ro geerlingguy/docker-centos8-ansible
+./app.sh
+
+# Test Django db installation.
+docker run -d --name db -p 3360:3360 --privileged -v /sys/fs/cgroup:/sys/fs/cgroup:ro geerlingguy/docker-centos8-ansible
+./db.sh
+
+# Other tests from the book.
+./multi.sh