Bug 661982

Summary:	net-misc/kafka-bin: Service fails to stop
Product:	Gentoo Linux	Reporter:	Michael Seifert <m.seifert>
Component:	Current packages	Assignee:	Patrick Lauer <patrick>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	hydrapolic, jstein
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Michael Seifert 2018-07-24 15:24:15 UTC

When Kafka is stopped via its init.d script, it sometimes fails.

When the user calls "/etc/init.d/kafka stop", start-stop-daemon sends SIGTERM to Kafka. Kafka then performs a graceful shutdown which may take some time. If the shutdown was not successful within 5 seconds, start-stop-daemon errors out, claiming that the process refused to stop. The service status is "crashed", although Kafka was shut down properly.

The fact that the service "crashes" is just an annoyance, but things get worse when configuration management tools like Ansible are involved.

I suggest that the init.d script explicitly implements the stop() command and retries for a longer time period. The init script of fail2ban was adjusted in a similar fashion due to the same behavior:
https://github.com/fail2ban/fail2ban/pull/1648

Any other suggestions how to approach this?

Reproducible: Sometimes

Steps to Reproduce:
1. /etc/init.d/kafka stop

Actual Results:  
 * Stopping kafka ...
 * start-stop-daemon: 1 process refused to stop
 * Failed to stop kafka                                                                                                                                                                                                                                                  
 * ERROR: kafka failed to stop

Expected Results:  
Service stops successfully