Misc devops scripts.
Roles and playbooks for ansible playbooks.
Rename file inventory-example.yml to inventory.yml
Prepare nodes in your inventory to be managed by ansible.
On all nodes:
- create
ansibleuser with a password of your choosing.
sudo adduser ansible
sudo usermod -aG sudo ansible
echo "ansible ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/ansible
On controller (i.e. your laptop):
Copy ssh key to all nodes. Ansible playbooks will use this key connect to all nodes.
su - ansible; ssh-keygen
ssh-copy-id -i ~/.ssh/id_ansible_rsa ansible
ssh-copy-id -i ~/.ssh/id_ansible_rsa ansible
Download the role to local roles folder. We'll override some values from the downloaded role.
# step 1 - download geerlingguy.postgresql from ansible galaxy
ansible-galaxy install geerlingguy.postgresql -p ./roles
# step 2 - update vars `var/main.yml`. available vars are in `geerlingguy.postgres/defaults/main.yml`
# step 3 - run the postgres playbook
ansible-playbook postgres.yml
# step 4 - connect to postgres in pg1
root@pg1:~# psql --host=localhost --dbname=testdb -U testdb_user
Postgres will not be accessible remotely, only from localhost by default. Enable remote access:
# edit postgresql.conf
find / -name "postgresql.conf"
# change from:
listen_addresses = 'localhost'
# to all as below or put specific IP address list.
listen_addresses = '*'
# update pg_hba.conf
find / -name "pg_hba.conf"
# add these lines to pg_hba.conf
host all all 0.0.0.0/0 md5
host all all ::/0 md5
# restart postgresql server
service postgresql restart
netstat -nlt
Ref: https://blog.bigbinary.com/2016/01/23/configure-postgresql-to-allow-remote-connection.html
Download asdf role to local roles folder.
ansible-galaxy install -p roles cimon-io.asdf
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