Ansible fails with runuser: command not found - postgresql

Question

I am trying to provision a PostgreSQL server using role galaxyproject.postgresql. Using Vagrant box generic/centos7 this role fails with message
TASK [galaxyproject.postgresql : Initialize database (RedHat >= 7)] ************
fatal: [postgresql]: FAILED! => {"changed": true, "cmd": ["/usr/pgsql-9.6/bin/postgresql96-setup", "initdb"], "delta": "0:00:00.181409", "end": "2019-10-16 01:45:59.495713", "msg": "non-zero return code", "rc": 1, "start": "2019-10-16 01:45:59.314304", "stderr": "", "stderr_lines": [], "stdout": "Initializing database ... failed, see /var/lib/pgsql/9.6/initdb.log", "stdout_lines": ["Initializing database ... failed, see /var/lib/pgsql/9.6/initdb.log"]}
The file /var/lib/pgsql/9.6/initdb.log has the following message
/usr/pgsql-9.6/bin/postgresql96-setup: line 143: runuser: command not found
On the target node runuser is available
[root#postgresql ~]# which runuser
/sbin/runuser
So the problem seems to be that /sbin is not on the PATH when Ansible runs on target nodes.
How can I make runuser command available to Ansible? I don't want to change the external role galaxyproject.postgresql of course.
When I output PATH using Ansible debug it shows that PATH does not include sbin.
TASK [galaxyproject.postgresql : debug] ****************************************
ok: [postgresql] => {
"PATH": {
"changed": true,
"cmd": "echo $PATH",
"delta": "0:00:00.010478",
"end": "2019-10-16 02:12:14.882341",
"failed": false,
"rc": 0,
"start": "2019-10-16 02:12:14.871863",
"stderr": "",
"stderr_lines": [],
"stdout": "/usr/local/bin:/usr/bin",
"stdout_lines": [
"/usr/local/bin:/usr/bin"
]
}
}

Answer 1

If you need to add something into PATH, you can try to set environment for this module. I hadn't tried this for postgres module, but it should work:
- postgres_user: # or other module name you are using
user: foo # and other normal arguments
environment:
PATH: '$PATH:/sbin'
See also: https://docs.ansible.com/ansible/latest/user_guide/playbooks_environment.html