I am trying to add a rule for zabbix in my tripleo wallaby setup on top of centos 8 stream.

i followed https://docs.openstack.org/project-deploy-guide/tripleo-docs/latest/features/security_hardening.html 

but got the error message:

 [ERROR]: Failed, module return: {'msg': 'value of action must be one of:
append, insert, got: accept', 'failed': True, 'invocation': {'module_args':
{'state': 'present', 'action': 'accept', 'jump': 'ACCEPT', 'chain': 'INPUT',
'protocol': 'tcp', 'source': '172.25.161.50', 'ctstate': ['NEW'], 'ip_version':
'ipv4', 'comment': '301 allow zabbix ipv4', 'destination_port': '10050',
'table': 'filter', 'match': [], 'syn': 'ignore', 'flush': False}}, 'warnings':
["The value 10050 (type int) in a string field was converted to '10050' (type
string). If this does not look like what you expect, quote the entire value to
ensure it does not change."], '_ansible_parsed': True}
 [ERROR]: Failed, return data: {'stdout': None, 'stderr': None, 'msg': 'value
of action must be one of: append, insert, got: accept', 'cmd': None, 'rc': 0,
'failed': True}
2022-07-21 01:27:33.335477 | 48d539a1-1679-1e80-25fd-000000005aa1 |       TASK | Manage firewall rules
2022-07-21 01:27:33.351515 | 48d539a1-1679-1e80-25fd-000000005542 |      FATAL | Manage firewall rules | overcloud-controller-0 | error={"changed": false, "cmd": null, "msg": "value of action must be one of: append, insert, got: accept", "rc": 0, "stderr": null, "stdout": null}

When i tried the following link:

my script is running fine but rules are not updated in iptables for zabbix.

Can you please suggest a correct approach to open port 10050 in tripleo?

With regards,

Swogat Pradhan