semi/signal

I had a hard time pulling together all the steps needed to import a PostgreSQL database using Ansible. Here’s the Ansible YAML blocks used to import the seed database for Lexiio.

1. Install PostgreSQL - name: Install Postgres
apt: name={{ item }} update_cache=yes cache_valid_time=3600 state=present
sudo: yes
with_items:
- postgresql
- postgresql-contrib
- libpq-dev
- python-psycopg2
tags: packages

2. Create the database (lexiiodb), UTF-8 for encoding and collation

- name: Create lexiiodb database
sudo_user: postgres
postgresql_db: name=lexiiodb encoding='UTF-8' lc_collate='en_US.UTF-8' lc_ctype='en_US.UTF-8' state=present

3. Create a role that will be granted access to the database (password is a variable read from some secret source)

- name: Create lexiio role for database
sudo_user: postgres
postgresql_user: db=lexiiodb user=lexiio password="{{ password }}" priv=ALL state=present

4. Start the PostgreSQL service

- name: Start the Postgresql service
sudo: yes
service:
name: postgresql
state: started
enabled: true

5. Import data into the database (using psql to pull in data from /home/lexiiodb.dump.sql)

- name: Importing lexiiodb data
sudo_user: postgres
shell: psql lexiiodb < /home/lexiiodb.dump.sql

6. For the role created, grant permissions on all schemas in the DB

- name: Grant usage of schema to lexiio role
sudo_user: postgres
postgresql_privs: database=lexiiodb state=present privs=USAGE type=schema roles=lexiio objs=dictionary

7. For the role created, grant permissions on all tables in the DB

- name: Grant table permissions for lexiio role
sudo_user: postgres
postgresql_privs: database=lexiiodb schema=dictionary state=present privs=SELECT,INSERT,UPDATE type=table roles=lexiio grant_option=no objs=ALL_IN_SCHEMA

8. For the role created, grant permissions on all sequences in the DB

- name: Grant sequence permissions for lexiio role
sudo_user: postgres
postgresql_privs: database=lexiiodb schema=dictionary state=present privs=USAGE type=sequence roles=lexiio grant_option=no objs=ALL_IN_SCHEMA

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