reconstructed/example

reconstructed example

The example in this directory generates a graph of hosts, organised based on the contents of a variable called inv__data associated to each host statically in the inventory/00-data.yml file. The main reconstructed script, located in inventory/01-test-reconstructed.yml, is executed once for each host. It creates the various groups at the appropriate locations, defines additional facts, and adds hosts to the groups.

The example can be executed using :

ansible-galaxy collection install .. -p ./collections
ansible-inventory --playbook-dir . --graph

When executed, localhost will be skipped as it doesn't have the inv__data fact.

Two hosts in there, evil-vm and evil-but-nicer-vm, are meant to illustrate the fail action as well as error recovery.

The rest of the hosts correspond to two instances of a LDAP cluster, in which two hosts are used as the frontend, two hosts as the read-only replicas, and the last one as the master. Groups are generated based on the environment, network, and failover stack, as well as service, components of the service, and instances of a service.

Below is the output that should be obtained.

[WARNING]: reconstructed - error on host evil-vm: evil-vm is obviously evil,
skipping.
@all:
  |--@managed:
  |  |--@by_environment:
  |  |  |--@env_dev:
  |  |  |  |--vm00
  |  |  |  |--vm01
  |  |  |  |--vm02
  |  |  |  |--vm03
  |  |  |  |--vm04
  |  |  |  |--vm09
  |  |  |--@env_prod:
  |  |  |  |--vm05
  |  |  |  |--vm06
  |  |  |  |--vm07
  |  |  |  |--vm08
  |  |--@by_failover_stack:
  |  |  |--@fostack_1:
  |  |  |  |--vm00
  |  |  |  |--vm02
  |  |  |  |--vm05
  |  |  |  |--vm07
  |  |  |--@fostack_2:
  |  |  |  |--vm01
  |  |  |  |--vm03
  |  |  |  |--vm06
  |  |  |  |--vm08
  |  |  |--@no_failover:
  |  |  |  |--vm04
  |  |  |  |--vm09
  |  |--@by_network:
  |  |  |--@net_dev:
  |  |  |  |--vm00
  |  |  |  |--vm01
  |  |  |  |--vm02
  |  |  |  |--vm03
  |  |  |  |--vm04
  |  |  |--@net_infra:
  |  |  |  |--vm05
  |  |  |  |--vm06
  |  |  |  |--vm07
  |  |  |  |--vm08
  |  |  |  |--vm09
  |  |--@by_service:
  |  |  |--@svc_ldap:
  |  |  |  |--@svcm_ldap_back:
  |  |  |  |  |--@svcm_ldap_ro:
  |  |  |  |  |  |--vm02
  |  |  |  |  |  |--vm03
  |  |  |  |  |  |--vm07
  |  |  |  |  |  |--vm08
  |  |  |  |  |--@svcm_ldap_rw:
  |  |  |  |  |  |--vm04
  |  |  |  |  |  |--vm09
  |  |  |  |--@svcm_ldap_front:
  |  |  |  |  |--vm00
  |  |  |  |  |--vm01
  |  |  |  |  |--vm05
  |  |  |  |  |--vm06
  |--@reedmably_evil:
  |  |--evil-but-nicer-vm
  |--@ungrouped:
  |  |--evil-vm
  |  |--localhost