Ansible

1. Ansibleのおはなし 2016/2/13 @pyonnuka

2. Agenda ・本セッションの目的・Ansible Ansible ・Ansible ・似たようなツールとの違いは？ Ansible ・Ansible

4. Who am I ? ・カウモ株式会社・城大学工学部情報工学科 @pyonnuka

6. 本セッションの目的 Ansible Ansible

7. Ansibleってなんぞ “App deployment, conﬁguration management and orchestration - all from one system.”

8. Ansibleってなんぞ

9. Ansibleってなんぞ・手作業によるミスが防げる・構築が簡単なので破壊も躊躇しない・・・開発環境ではうまくいってたのにーっていうのが

11. Ansibleの特徴・何度実行しても同じ結果になる OpenSSH ・サーバーサイドに何もインストールする必要がない YAML

12. 類似ツールとの比較 Chef Puppet Ansible Ruby, Erlang Ruby Python DSL YAML

13. Ansibleを使うための準備・Python >= 2.6 easy_install ansible Mac OS X brew install ansible ・Python >= 2.4 CentOS 6.7 Python 2.6.6

15. ディレクトリの構成 http://docs.ansible.com/ansible/playbooks_best_practices.html production # inventory file for production servers staging # inventory file for staging environment group_vars/ group1 # here we assign variables to particular groups group2 # "" host_vars/ hostname1 # if systems need specific variables, put them here hostname2 # "" library/ # if any custom modules, put them here (optional) filter_plugins/ # if any custom filter plugins, put them here (optional) site.yml # master playbook webservers.yml # playbook for webserver tier dbservers.yml # playbook for dbserver tier roles/ common/ # this hierarchy represents a "role" tasks/ # main.yml # <-- tasks file can include smaller files if warranted handlers/ # main.yml # <-- handlers file templates/ # <-- files for use with the template resource ntp.conf.j2 # <------- templates end in .j2 files/ # bar.txt # <-- files for use with the copy resource foo.sh # <-- script files for use with the script resource vars/ # main.yml # <-- variables associated with this role defaults/ # main.yml # <-- default lower priority variables for this role meta/ # main.yml # <-- role dependencies webtier/ # same kind of structure as "common" was above, done for the webtier role monitoring/ # "" fooapp/ # ""

16. ディレクトリの構成 http://docs.ansible.com/ansible/playbooks_best_practices.html production # inventory file for production servers staging # inventory file for staging environment group_vars/ group1 # here we assign variables to particular groups group2 # "" host_vars/ hostname1 # if systems need specific variables, put them here hostname2 # "" library/ # if any custom modules, put them here (optional) filter_plugins/ # if any custom filter plugins, put them here (optional) site.yml # master playbook webservers.yml # playbook for webserver tier dbservers.yml # playbook for dbserver tier roles/ common/ # this hierarchy represents a "role" tasks/ # main.yml # <-- tasks file can include smaller files if warranted handlers/ # main.yml # <-- handlers file templates/ # <-- files for use with the template resource ntp.conf.j2 # <------- templates end in .j2 files/ # bar.txt # <-- files for use with the copy resource foo.sh # <-- script files for use with the script resource vars/ # main.yml # <-- variables associated with this role defaults/ # main.yml # <-- default lower priority variables for this role meta/ # main.yml # <-- role dependencies webtier/ # same kind of structure as "common" was above, done for the webtier role monitoring/ # "" fooapp/ # ""

17. ディレクトリの構成（簡易版） hosts # site.yml # roles/ common/ # common role tasks/ main.yml # templates/ ntp.conf.j2 # Jinja2

19. インベントリファイル [webservers] kaumo.jp ansible.kaumo.jp [dbservers] 192.168.33.10 192.168.33.11 [webservers:vars] worker_process = 8

21. インベントリファイル [webservers] kaumo.jp ansible.kaumo.jp [dbservers] 192.168.33.10 192.168.33.11 [webservers:vars] worker_process = 8 IP

24. Roles roles/ common/ # common role tasks/ main.yml # nginx/ # nginx role tasks/ main.yml templates/ nginx.conf.j2

25. Roles tasks YAML roles/ common/ tasks/ main.yml nginx/ tasks/ main.yml templates/ nginx.conf.j2 —- - name: install git # yum: name=git # yum sudo: true

26. Roles tasks YAML roles/ common/ tasks/ main.yml nginx/ tasks/ main.yml templates/ nginx.conf.j2 --- - name: Install nginx yum: name=nginx state=present - name: Copy nginx conf ﬁle template: src=nginx.conf dest=/etc/nginx/conf.d/default.conf - name: restart nginx service: name=nginx state=restarted enabled=yes

27. Roles Jinja2 roles/ common/ tasks/ main.yml nginx/ tasks/ main.yml templates/ nginx.conf.j2 worker_processes {{ worker_process }}; server { listen 80; server_name example.org; location / { root /var/www/example.org; index index.html index.htm; } } templates template

28. Roles Jinja2 roles/ common/ tasks/ main.yml nginx/ tasks/ main.yml templates/ nginx.conf.j2 worker_processes {{ worker_process }}; server { listen 80; server_name example.org; location / { root /var/www/example.org; index index.html index.htm; } } templates template {{ var }}

29. ディレクトリの構成（簡易版） hosts # site.yml # roles/ common/ # common role tasks/ main.yml # templates/ # ntp.conf.j2 # Jinja2

30. プレイブック host role YAML - hosts: webservers roles: - common - nginx vars: ruby_version: 2.1.1

31. https://github.com/pyonnuka/ansible-sample おわりに

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