Using bash modules

Bash modules in Ansible are no different to any other bash scripts, except in the way that they print the data on stdout. Bash modules can be as straightforward as checking whether a process is running on the remote host, to running some more complex commands.

As previously stated, the general recommendation is to use Python for modules. In my opinion, the second-best choice (only for very easy modules) is the bash module, due to its simplicity and user base.

Let's create a library/kill_java.sh file with the following content:

#!/bin/bash 
source $1 
 
SERVICE=$service_name 
 
JAVA_PIDS=$(/usr/java/default/bin/jps | grep ${SERVICE} | awk '{print $1}') 
 
if [ ${JAVA_PIDS} ]; then 
    for JAVA_PID in ${JAVA_PIDS}; do 
        /usr/bin/kill -9 ${JAVA_PID} 
    done 
    echo "failed=False msg=\"Killed all the orphaned processes for $...