Ansible and Scala Projects

Transcript

1. Ansible for Scala projects José Miguel 0pt1mates | @jm2dev 1 / 39
2. Introducción ▶ Who am I? ▶ What do I do? 0pt1mates | @jm2dev 2 / 39
3. What do I want Make everything as simpler as possible, but not simpler. Albert Einstein 0pt1mates | @jm2dev 3 / 39
4. Motivation ▶ Don’t repeat yourself ▶ Knwoledge sharing 0pt1mates | @jm2dev 4 / 39
5. A definition Automated provisioning, also called self-service provision- ing, is the ability to deploy an information technology or telecommunications service by using predefined proce- dures that are carried out electronically without requiring human intervention. 0pt1mates | @jm2dev 5 / 39
6. Options ▶ ansible ▶ cfengine ▶ chef ▶ puppet ▶ salt 0pt1mates | @jm2dev 6 / 39
7. Ansible ▶ Simple requisites ▶ ssh ▶ python ▶ Simple language ▶ yaml 0pt1mates | @jm2dev 7 / 39
8. Setup ▶ python 3 with virtualenv mkdir proyecto cd proyecto python3 -m venv venv 0pt1mates | @jm2dev 8 / 39
9. cat requirements.txt ansible 0pt1mates | @jm2dev 9 / 39
10. Inventario: cat hosts [local] 127.0.0.1 0pt1mates | @jm2dev 10 / 39
11. Tasks for a dev ▶ software installation ▶ copy files ▶ etc Our requirements for a Scala project: ▶ git ▶ openjdk ▶ sbt 0pt1mates | @jm2dev 11 / 39
12. Role ▶ Group tasks. mkdir -p roles/programador/tasks touch roles/programador/tasks/main.yml 0pt1mates | @jm2dev 12 / 39
13. cat programador/tasks/main.yml --- - name: Update pacman cache become: true pacman: update_cache: yes - name: Install packages become: true pacman: name: "{{ item }}" state: present 0pt1mates | @jm2dev 13 / 39
14. cat programador.yml --- - name: Preparacion proyecto X hosts: local connection: local roles: - programador 0pt1mates | @jm2dev 14 / 39
15. Does it work? cd proyecto source venv/bin/activate pip install -r requirements.txt ansible-playbook -i hosts programador.yml 0pt1mates | @jm2dev 15 / 39
16. Role per project ▶ barebone project ▶ more things to automate? 0pt1mates | @jm2dev 16 / 39
17. Tasks version 2 Let’s clean in it a bit mv roles/programador/tasks/main.yml \ roles/programador/tasks/paquetes.yml 0pt1mates | @jm2dev 17 / 39
18. cat roles/programador/tasks/sbt.yml --- - name: SBT config plugins directory file: path: "{{ home_dir }}/.sbt/1.0/plugins" recurse: yes state: directory mode: 0755 - name: SBT Global plugins copy: src: files/plugins.sbt 0pt1mates | @jm2dev 18 / 39
19. Those variables touch group_vars/all --- home_dir: "{{ lookup('env', 'HOME') }}" 0pt1mates | @jm2dev 19 / 39
20. Configuring SBT (II) mkdir -p roles/programador/files touch roles/programador/files/plugins.sbt touch roles/programador/files/repositories.sbt 0pt1mates | @jm2dev 20 / 39
21. cat roles/programador/files/plugins.sbt addSbtPlugin("org.ensime" % "sbt-ensime" % "2.1.0") addSbtPlugin("io.get-coursier" % "sbt-coursier" % "1.1.0-M1 addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.5.1") 0pt1mates | @jm2dev 21 / 39
22. cat roles/programador/files/repositories.sbt [repositories] local my-ivy-proxy-releases: https://nexus.proyecto.xyz/content [organization]/[module]/(scala_[scalaVersion]/)(sbt_[sb my-maven-proxy-releases: https://nexus.proyecto.xyz/conte 0pt1mates | @jm2dev 22 / 39
23. cat roles/programador/tasks/git.yml --- - name: Git config directory file: path: "{{ home_dir }}/.config/git" state: directory mode: 0755 - name: Git setup template: src: templates/git_config.j2 dest: "{{ home_dir }}/.config/git/config" 0pt1mates | @jm2dev 23 / 39
24. Configuring GIT (II) What are templates? mkdir -p roles/programador/templates touch roles/programador/templates/git_config.j2 0pt1mates | @jm2dev 24 / 39
25. cat roles/programador/templates/gitconfig .j2 [user] name = {{ git_username }} email = {{ git_email }} [color] ui = auto [push] default = simple [core] 0pt1mates | @jm2dev 25 / 39
26. Configuring GIT (IV) And those are … variables? mkdir -p roles/programador/vars touch roles/programador/vars/main.yml 0pt1mates | @jm2dev 26 / 39
27. cat roles/programador/vars/main.yml --- git_username: Jose Miguel Martinez Carrasco git_email: jm@0pt1mates.com 0pt1mates | @jm2dev 27 / 39
28. Developer tasks (II) And the new main.yml version: --- - import_tasks: paquetes.yml - import_tasks: git.yml - import_tasks: sbt.yml 0pt1mates | @jm2dev 28 / 39
29. Porject X role ▶ simple & functional setup ▶ extensible 0pt1mates | @jm2dev 29 / 39
30. Tasks mkdir -p roles/proyectoX/tasks touch roles/proyectoX/tasks/main.yml touch roles/proyectoX/tasks/database.yml --- - import_tasks: database.yml 0pt1mates | @jm2dev 30 / 39
31. A database --- - name: Update pacman cache become: true pacman: update_cache: yes - name: Install postgresql become: true pacman: name: "{{ item }}" state: present 0pt1mates | @jm2dev 31 / 39
32. Fatjar ▶ package our service as a fatjar ▶ run it locally as a service so we can ▶ run integration/acceptance tests 0pt1mates | @jm2dev 32 / 39
33. Systemd unit mkdir -p roles/fatjar/{tasks,templates,vars} touch roles/fatjar/tasks/main.yml touch roles/fatjar/templates/fatjar.service.j2 touch roles/fatjar/vars/all 0pt1mates | @jm2dev 33 / 39
34. cat roles/fatjar/vars/all service_user: "hello" service_name: "Hello" service_install_dir: "/opt/{{ service_name }}" bin_location: "{{ service_install_dir }}/bin/server" 0pt1mates | @jm2dev 34 / 39
35. cat roles/fatjar/templates/fatjar.service.j2 [Unit] Description={{ service_name }} After=syslog.target [Service] ExecStart={{ bin_location }} User={{ service_user }} [Install] WantedBy=multi-user.target 0pt1mates | @jm2dev 35 / 39
36. cat roles/fatjar/tasks/main.yml - name: Create systemd directory file: path: "{{ service_install }}" state: directory mode: 0755 - name: Install fatjar service copy: src: "item" dest: "{{ service_install }}" with_items: 0pt1mates | @jm2dev 36 / 39
37. Playbook --- - name: Preparacion proyecto X hosts: local connection: local roles: - programador - proyectoX - fatjar 0pt1mates | @jm2dev 37 / 39
38. Finally curl localhost:8080/hello/scalaInTheCity { "message": "Hello, Scala in the City" } 0pt1mates | @jm2dev 38 / 39
39. Contact @jm2dev 0pt1mates | @jm2dev 39 / 39