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Bug #8168

If syslog service is stopped, it is not restarted automatically by rudder-agent, so agent doesn't report anything

Added by Nicolas CHARLES over 1 year ago. Updated 3 months ago.

Status:
Released
Priority:
2
Category:
Initial promises & sys tech
Target version:
Target version (plugin):
Severity:
Critical - prevents main use of Rudder | no workaround | data loss | security
User visibility:
Operational - other Techniques | Technique editor | Rudder settings
Effort required:
Medium
Priority:
70
Tags: Sponsored, Next minor release

Description

On a sles11, if syslog-ng is stop, running the agent won't restart it
So the node doesn't report a thing, and the node is in the "no answer" state - and won't auto-heal

we should automatically restart the appropriate syslog deamon when none is running

Fails at least on SLES11 rudder 3.1, but most likely on previous version of Rudder


Subtasks

Bug #10949: Agent output contains error because of new syslog service checksReleasedBenoît PECCATTE

Bug #10959: We should only use the "syslog" service on SLES11ReleasedBenoît PECCATTE


Related issues

Related to Rudder - Bug #10758: No report on Debian 8 Rejected

Associated revisions

Revision 048dea24
Added by Benoît PECCATTE 3 months ago

Fixes #8168: If syslog-ng is stopped, it is not restarted automatically by rudder-agent, so agent doesn't report anything

History

#1 Updated by Jonathan CLARKE over 1 year ago

  • Priority changed from 1 to 2

This is easily fixed by adding a call to "service_ensure_running" in the common promises.

#2 Updated by Jonathan CLARKE over 1 year ago

  • Assignee set to Nicolas CHARLES

#3 Updated by Nicolas CHARLES over 1 year ago

  • Target version changed from 3.1.10 to 2.11.21

Actually, this was never implemented :/

#4 Updated by Nicolas CHARLES over 1 year ago

Ha - i'm hitting an unexpected issue: how do I know which syslog service I shall start in priority ?
For instance, if a system is provisionned with ksyslog, and then syslog-ng is installed, how can I detect that syslog-ng has precedence over ksyslog ?

I could service_check_running on each of syslog_ng, rsyslog, syslog, and if any of them is up and running don't do anything, else start the most complex one ? (syslog-ng > rsyslog > syslog)

What do you think of it ?

#5 Updated by Jonathan CLARKE over 1 year ago

  • Assignee changed from Nicolas CHARLES to Alexis MOUSSET

Nicolas CHARLES wrote:

Ha - i'm hitting an unexpected issue: how do I know which syslog service I shall start in priority ?
For instance, if a system is provisionned with ksyslog, and then syslog-ng is installed, how can I detect that syslog-ng has precedence over ksyslog ?

I could service_check_running on each of syslog_ng, rsyslog, syslog, and if any of them is up and running don't do anything, else start the most complex one ? (syslog-ng > rsyslog > syslog)

This order is subjective, so we shouldn't do that.

What do you think of it ?

On SuSE, this is quite easy because there is a config file in /etc that determines which syslog is in use.

#6 Updated by Alexis MOUSSET over 1 year ago

  • Status changed from New to In progress

#7 Updated by Alexis MOUSSET over 1 year ago

Not that easy on SuSE either (with the "syslog" pseudo-service which point to the actual logging service), because service_ensure_running("syslog") ends up greping the name of the service in ps output (and does not find it because syslog is never running), and therefore tries to start it on every run.

#8 Updated by Jonathan CLARKE over 1 year ago

  • Tags changed from Sponsored to Sponsored, Quick and important, Next minor release

#9 Updated by Vincent MEMBRÉ over 1 year ago

  • Target version changed from 2.11.21 to 2.11.22

#10 Updated by Vincent MEMBRÉ over 1 year ago

  • Target version changed from 2.11.22 to 2.11.23

#11 Updated by Vincent MEMBRÉ about 1 year ago

  • Target version changed from 2.11.23 to 2.11.24

#12 Updated by Vincent MEMBRÉ about 1 year ago

  • Target version changed from 2.11.24 to 308

#13 Updated by Vincent MEMBRÉ about 1 year ago

  • Target version changed from 308 to 3.1.14

#14 Updated by Vincent MEMBRÉ 12 months ago

  • Target version changed from 3.1.14 to 3.1.15

#15 Updated by Vincent MEMBRÉ 12 months ago

  • Target version changed from 3.1.15 to 3.1.16

#16 Updated by Vincent MEMBRÉ 11 months ago

  • Target version changed from 3.1.16 to 3.1.17

#17 Updated by Vincent MEMBRÉ 10 months ago

  • Target version changed from 3.1.17 to 3.1.18

#18 Updated by Vincent MEMBRÉ 7 months ago

  • Target version changed from 3.1.18 to 3.1.19

#19 Updated by Alexis MOUSSET 7 months ago

  • Status changed from In progress to New

#20 Updated by Jonathan CLARKE 7 months ago

  • Severity set to Major - prevents use of part of Rudder | no simple workaround

#21 Updated by François ARMAND 6 months ago

  • Severity changed from Major - prevents use of part of Rudder | no simple workaround to Critical - prevents main use of Rudder | no workaround | data loss | security
  • User visibility set to Operational - other Techniques | Technique editor | Rudder settings

We are setting it to "critical" because data are lost (no reports during the period).

#22 Updated by Benoît PECCATTE 6 months ago

  • Priority set to 71

#23 Updated by Alexis MOUSSET 6 months ago

The only easy fix is for SLES11 (syslog pseudo-service) on Rudder 4.1 (because of the new service methods). All other cases require some more thinking about the issue.

#24 Updated by Vincent MEMBRÉ 5 months ago

  • Target version changed from 3.1.19 to 3.1.20

#25 Updated by Jonathan CLARKE 5 months ago

  • Assignee deleted (Alexis MOUSSET)

#26 Updated by Alexis MOUSSET 5 months ago

  • Effort required set to Medium
  • Priority changed from 71 to 70

This is a medium issue because we do not know how to properly detect the service to start in the general case.

#27 Updated by Vincent MEMBRÉ 4 months ago

  • Target version changed from 3.1.20 to 3.1.21

#28 Updated by François ARMAND 4 months ago

  • Related to Bug #10758: No report on Debian 8 added

#29 Updated by Jonathan CLARKE 4 months ago

  • Tags changed from Sponsored, Quick and important, Next minor release to Sponsored, Next minor release

#30 Updated by Benoît PECCATTE 4 months ago

  • Assignee set to Benoît PECCATTE

#31 Updated by Benoît PECCATTE 4 months ago

  • Target version changed from 3.1.21 to 4.1.4

Let's ensure running all syslog services present.

This will work in all the cases except when someone installs 2 syslog services and doesn't configure them to work together.

#32 Updated by Benoît PECCATTE 4 months ago

  • Status changed from New to In progress

#33 Updated by Benoît PECCATTE 4 months ago

  • Status changed from In progress to Pending technical review
  • Assignee changed from Benoît PECCATTE to Alexis MOUSSET
  • Pull Request set to https://github.com/Normation/rudder-techniques/pull/1150

#34 Updated by Benoît PECCATTE 3 months ago

  • Status changed from Pending technical review to Pending release

#35 Updated by Alexis MOUSSET 3 months ago

  • Subject changed from If syslog-ng is stopped, it is not restarted automatically by rudder-agent, so agent doesn't report anything to If syslog service is stopped, it is not restarted automatically by rudder-agent, so agent doesn't report anything

#36 Updated by Alexis MOUSSET 3 months ago

  • Status changed from Pending release to Released

This bug has been fixed in Rudder 4.1.4 which was not released (see changelog for details), and is available in Rudder 4.1.5.

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