Wazuh-Indexer SysV Init script fails to start the service

[juliancnn]

Related issues:

• Migration to OpenSearch's Debian scripts #564

Description

On non-systemd (SysV) systems, attempting to start the Wazuh-Indexer service using service wazuh-indexer start does not actually start the process. The service reports it started but immediately shows as not running when checked with service wazuh-indexer status.

Observed Behavior:

# service wazuh-indexer status
 * wazuh-indexer is not running

# service wazuh-indexer start
 * Starting wazuh-indexer

# service wazuh-indexer status
 * wazuh-indexer is not running

# ps -aux | grep -i wazuh
(no wazuh-indexer process found)

This issue appears related to the line in the SysV init script where pidofproc -p $PID_FILE wazuh-indexer is executed. The pidofproc function returns an exit code of 3 (indicating the pid file is not exist), which prevents the $pid variable from being assigned and prematurely terminates the start sequence.

Relevant Code Snippet:

wazuh-indexer/distribution/packages/src/deb/init.d/wazuh-indexer

Lines 85 to 86 in a6476b2

	pid=`pidofproc -p $PID_FILE wazuh-indexer`
	if [ -n "$pid" ] ; then

pid=`pidofproc -p $PID_FILE wazuh-indexer`

If pidofproc returns a non-zero code, the script never assigns $pid, causing the script to fail silently rather than proceeding with the start logic.

Objective

Fix the SysV init script for Wazuh-Indexer so that it properly handles the pidofproc return code, allowing the service to start and run as expected on SysV-based systems.

Acceptance Criteria

• service wazuh-indexer start successfully launches Wazuh-Indexer on SysV init systems.
• service wazuh-indexer status correctly reports the running status after starting.
• service wazuh-indexer stop successfully stop Wazuh-Indexer on SysV init systems.
• No errors or unexpected behavior occur in logs.

[QU3B1M]

Bug fixed with the changes applied on issue #564

• Adapt features from legacy packaging scripts to the current ones  #623

Start wazuh-indexer service

# service wazuh-indexer start
Starting wazuh-indexer...
wazuh-indexer started successfully

# service wazuh-indexer status
wazuh-indexer is running (PID: 2353)

Stop wazuh-indexer service

# service wazuh-indexer stop
Stopping wazuh-indexer... 
wazuh-indexer stopped successfully

# service wazuh-indexer status
wazuh-indexer is not running

Restart a running wazuh-indexer service

# sudo service wazuh-indexer restart
Stopping wazuh-indexer... 
wazuh-indexer stopped successfully
Starting wazuh-indexer...
wazuh-indexer started successfully

Restart a stopped wazuh-indexer service

# service wazuh-indexer stop
Stopping wazuh-indexer... 
wazuh-indexer stopped successfully

# service wazuh-indexer restart
Stopping wazuh-indexer... 
wazuh-indexer is not running
Starting wazuh-indexer...
wazuh-indexer started successfully

Check ps -aux

# ps -aux | grep -I wazuh
root      2640  0.0  0.0   5876   648 pts/0    S+   10:59   0:00 grep -I wazuh