notes/session-27.txt at main · daws-88s/notes · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
code and configuration
1. not confidential -> URL, variables
2. confidential -> username, passwords

mongodb-dev.daws88s.online

DRY

Ansible Roles
===============
Ansible role is property directory structure of creating, managing and reusing playbooks. we can breakdown playbooks into multiple components like tasks, handlers, vars, meta, templates, files, etc. by default ansible loads main.yaml in these directories

ansible configuration
================
1. ANSIBLE_CONFIG
2. PWD ansible.cfg
3. user home directory .ansible.cfg
4. /etc/ansible/ansible.cfg

/home/ec2-user/ansible-roboshop-roles/roles/mongodb/files/mongo.repo
/home/ec2-user/ansible-roboshop-roles/roles/mongodb/mongo.repo
/home/ec2-user/ansible-roboshop-roles/roles/mongodb/tasks/files/mongo.repo
/home/ec2-user/ansible-roboshop-roles/roles/mongodb/tasks/mongo.repo
/home/ec2-user/ansible-roboshop-roles/files/mongo.repo
/home/ec2-user/ansible-roboshop-roles/mongo.repo

nodejs_setup -> enable install nodejs install dependencies
app_setup -> create directory, create system user, download code, unarchieve code
system_setup


1. load catalogue role
2. ansible finds meta directory and main.yaml
3. it depends on common role
4. ansible executes main.yaml in common/tasks folder
5. now ansible starts executing catalogue/tasks/main.yaml
6. we extracted common code into common/app-setup.yaml
7. ansible imports this into catalogue/tasks/main