Manager

Base directory: environments/manager

Ansible configuration

Note

Do not customize the ansible.cfg configuration file. The file will be updated from time to time.

Playbooks

The manager environment environments/manager/ hosts playbooks to perform the initial bootstrap of the manager node. The initial bootstrap installs management commands and configuration files.

Note

These playbooks are updated from time to time. Therefore do not make any changes to them. Custom playbooks can be placed in the custom environment.

Inventory

The manager environment has a dedicated inventory file environments/manager/hosts. Only one host group manager is part of the inventory. All other environments use the global inventory at inventory/hosts.

Script

The manager environment includes a run.sh script. This script is used for the execution of the included playbooks.

Note

Do not customize the run.sh script. The file will be updated from time to time.

Caching

Redis

environments/ansible.cfg
# Fact caching
gathering = smart
fact_caching = redis
fact_caching_timeout = 86400
fact_caching_connection = cache:6379:0

JSON file

environments/manager/configuration.yml
redis_enable: false
environments/ansible.cfg
# Fact caching
gathering = smart
fact_caching = jsonfile
fact_caching_timeout = 86400
fact_caching_connection = /share/facts

Warning

jsonfile fact caching can cause a huge performance impact for compute nodes, due to the large number of virtual network interfaces. Cases of 50MB and above for a single node have been seen. Depending on the number of compute nodes this slows down Ansible quite a lot. If you have issues with that, switch to Redis fact caching.