Bug #22857: Service enabled test doesn't seem to work for service iptables on Debian 11 - Rudder - Issue Tracker

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Bug #22857

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Service enabled test doesn't seem to work for service iptables on Debian 11

Added by Michel BOUISSOU over 1 year ago. Updated 6 months ago.

Status:

Discussion

Priority:

N/A

Assignee:

Alexis Mousset

Category:

Generic methods

Target version:

7.3.17

Pull Request:

Severity:

UX impact:

User visibility:

Operational - other Techniques | Rudder settings | Plugins

Effort required:

Priority:

Name check:

To do

Fix check:

To do

Regression:

Description

Hello,

Both methods : “Service enabled at boot” and “Service action” with the “is-enabled” action seem to return “success” for service “iptables” (which loads iptables rules previously saved into /etc/iptables) on Debian 11, even though the service has been manually disabled.

After disabling the service and rebooting the machine, iptables rules will not be restored (which is expected), but Rudder still believes the service is enabled.

root@lab_test_1_agent1:/# systemctl disable iptables
Removed

root@lab_test_1_agent1:/# rudder agent run -I

2023-06-08T08:33:49+00:00 R: [INFO] Executing is-enabled on iptables using the systemctl method
A| compliant iptables_basic Enable iptables service iptables Ensure service iptables is enabled at boot was correct

Please also see attached image and relevant parts of a Rudder agent run log.

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Screenshot_20230608_103308.png (57.6 KB) Screenshot_20230608_103308.png	iptables service is disabled	Michel BOUISSOU, 2023-06-08 10:39
runlog.txt (87 KB) runlog.txt	Relevant parts of verbose agent execution log	Michel BOUISSOU, 2023-06-08 10:41
clipboard-202307061635-xtez2.png (187 KB) clipboard-202307061635-xtez2.png		Alexis Mousset, 2023-07-06 16:35

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Updated by Vincent MEMBRÉ over 1 year ago

Target version changed from 7.3.3 to 7.3.4

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Updated by Alexis Mousset over 1 year ago

Status changed from New to In progress
Assignee set to Alexis Mousset

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Updated by Alexis Mousset over 1 year ago

# systemctl is-active iptables
active
# systemctl is-enabled iptables
alias

our service manager manager does not know about aliases.

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Updated by Alexis Mousset over 1 year ago

File clipboard-202307061635-xtez2.png clipboard-202307061635-xtez2.png added

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Updated by Alexis Mousset over 1 year ago

We want to be able to detect is a service is actually enabled.

The current behavior is just to run is-enabled and to check the return code, which means aliases units are always considered enabled.

The right answer is to resolve the alias name but it is actually not trivial. A temporary workaround could be to make is-enabled on aliases considered a failure, with a message instructing the user to use the actual unit name...

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Updated by Alexis Mousset over 1 year ago

Status changed from In progress to Discussion

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Updated by Michel BOUISSOU over 1 year ago

More complexity is added by the fact that a given service may be an actual service on some distros or versions of distros, and an alias on others.

Asking the user to use the real service name rather than resolving it ourselves might create the need for the user to create more different groups of machines or write complex techniques depending upon the nodes os and version.

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