{"id":6916,"date":"2020-09-17T16:51:13","date_gmt":"2020-09-17T14:51:13","guid":{"rendered":"https:\/\/blog.via-internet.de\/?p=6916"},"modified":"2020-09-17T16:51:13","modified_gmt":"2020-09-17T14:51:13","slug":"ansible-getting-started","status":"publish","type":"post","link":"https:\/\/via-internet.de\/blog\/2020\/09\/17\/ansible-getting-started\/","title":{"rendered":"Ansible | Getting Started"},"content":{"rendered":"\n

Installation<\/h2>\n\n\n\n

Install Python 3<\/h3>\n\n\n\n

Install Ansible<\/h3>\n\n\n\n
pip install ansible<\/pre>\n\n\n\n
Setup virtual machines<\/h2>\n\n\n\n
In this example, we use Vagrant. But using docker is also a good choice<\/p>\n\n\n\n
Create Vagrantfile<\/h3>\n\n\n\n
Change IP Address and Hostname for each virtual machine<\/p>\n\n\n\n
Vagrant.configure(\"2\") do |config|\n  config.vm.box = \"hashicorp\/bionic64\"\n  config.vm.network \"public_network\", ip: \"172.16.2.191\", bridge: \"en0: Ethernet\"\n\n  config.vm.synced_folder \".\/data\", \"\/DATA\"\n  config.vm.hostname = \"host1\"\nend<\/pre>\n\n\n\n
Start virtual machine<\/h3>\n\n\n\n
vagrant up\nvagrant ssh<\/pre>\n\n\n\n
Configure virtual machine<\/h3>\n\n\n\n
Install required programm sshpass for running ansible commands as root on target machines.<\/p>\n\n\n\n
sudo apt-get install sshpass<\/pre>\n\n\n\n
Setup SSH permissions<\/h2>\n\n\n\n
Create ssh key<\/h3>\n\n\n\n
ssh-keygen -t rsa<\/pre>\n\n\n\n
Add id_rsa_<user>.pub<\/code> to virtual machines into $HOME\/.ssh<\/code>\/authorized_keys<\/h3>\n\n\n\n
<\/p>\n\n\n\n
Setup config files<\/h2>\n\n\n\n
etc\/ansible\/hosts<\/h4>\n\n\n\n
ansible1\nansible2\nansible3<\/pre>\n\n\n\n
etc\/ansible\/ansible.cfg<\/h4>\n\n\n\n
Create Ansible configuration file in current directory with this content:<\/p>\n\n\n\n
[defaults]\ninterpreter_python = auto<\/pre>\n\n\n\n
Ansible searches for configuration files in the following order, processing the first file it finds and ignoring the rest:<\/p>\n\n\n\n
  1. $ANSIBLE_CONFIG<\/code> if the environment variable is set.<\/li>
  2. ansible.cfg<\/code> if it\u2019s in the current directory.<\/li>
  3. ~\/.ansible.cfg<\/code> if it\u2019s in the user\u2019s home directory.<\/li>
  4. \/etc\/ansible\/ansible.cfg<\/code>, the default config file.<\/li><\/ol>\n\n\n\n
    First Test<\/h2>\n\n\n\n
     ansible -i etc\/ansible\/hosts all -m ping -u vagrant<\/pre>\n\n\n\n
    Set default Python version on Ubuntu<\/p>\n\n\n\n
    update-alternatives --install \/usr\/bin\/python python \/usr\/bin\/python3.6 1\n<\/pre>\n\n\n\n
    Working with Playbooks<\/h2>\n\n\n\n
    Create simple playbook<\/h3>\n\n\n\n
    Create file httpd.yaml<\/code><\/p>\n\n\n\n
    ---\n- hosts: webservers\n  remote_user: ansible\n  tasks:\n  - name: Ensure apache is installed and updated\n    yum:\n      name: httpd\n      state: latest\n    become: yes<\/pre>\n\n\n\n
    Run playbook<\/h3>\n\n\n\n
    ansible-playbook -i etc\/ansible\/hosts  httpd.yaml -kK<\/pre>\n\n\n\n
    Troubleshooting<\/h2>\n\n\n\n
    Allow SSH root login<\/h3>\n\n\n\n
    $ sudo sed -i 's\/#PermitRootLogin prohibit-password\/PermitRootLogin yes\/' \/etc\/ssh\/sshd_config<\/pre>\n","protected":false},"excerpt":{"rendered":"
    Installation Install Python 3 Install Ansible Setup virtual machines In this example, we use Vagrant. But using docker is also a good choice Create Vagrantfile Change IP Address and Hostname for each virtual machine Start virtual machine Configure virtual machine Install required programm sshpass for running ansible commands as root on target machines. Setup SSH permissions Create ssh key Add id_rsa_<user>.pub to virtual machines into $HOME\/.ssh\/authorized_keys Setup config files etc\/ansible\/hosts etc\/ansible\/ansible.cfg Create Ansible configuration file in current directory with this content: Ansible searches for configuration files in the following order, processing the first file it finds and ignoring the rest: $ANSIBLE_CONFIG if […]<\/p>\n","protected":false},"author":1,"featured_media":6918,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[79],"tags":[],"class_list":["post-6916","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/posts\/6916","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/comments?post=6916"}],"version-history":[{"count":0,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/posts\/6916\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/media?parent=6916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/categories?post=6916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/via-internet.de\/blog\/wp-json\/wp\/v2\/tags?post=6916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}