WSO2 Depsync with rsync and incron

Setup password less authentication for ubuntu

1. create a private/pub key in master server (use empty passprase)

ssh-keygen

2. Copy the new key to your worker server:

ssh-copy-id worker_username@worker_host

Setup rsync and incron

1. install rsync

sudo apt-get install rsync

2. install incron

sudo apt-get install incron

3. Allow incron

vim /etc/incron.allow

add rootuser username in this file, save and close

4. Create a push_artifacts.sh file with following content in  APIM-HOME directory

#!/bin/bash

# push_artifacts.sh - Push artifact changes to the worker nodes.

master_artifact_path=/apps/wso2/wso2am-1.10.0/repository/deployment/server

worker_artifact_path=/apps/wso2/wso2am-1.10.0/repository/deployment/

worker_nodes=(worker1 worker2 worker3)

while [ -f /tmp/.rsync.lock ]

do

  echo -e ";[WARNING] Another rsync is in progress, waiting...";

  sleep 2

done

mkdir /tmp/.rsync.lock

if [ $? = "1" ]; then

echo ";[ERROR] : can not create rsync lock";

exit 1

else

echo ";INFO : created rsync lock";

fi

for i in ${worker_nodes[@]}; do

echo ";===== Beginning artifact sync for $i =====";

rsync -avzx --delete -e ssh $master_artifact_path rootuser@$i:$worker_artifact_path

if [ $? = "1" ]; then

echo ";[ERROR] : rsync failed for $i";

exit 1

fi

echo ";===== Completed rsync for $i =====";

done

rm -rf /tmp/.rsync.lock

echo ";[SUCCESS] : Artifact synchronization completed successfully";

6. Give it executable rights

chmod +x push_artifacts.sh

7. Execute below command to configure icron.

incrontab -e

8. Add the below text in the prompt opened by above step.

/apps/wso2/wso2am-1.10.0/repository/deployment/server IN_MODIFY,IN_CREATE,IN_DELETE /apps/wso2/wso2am-1.10.0/push_artifacts.sh

9. Test

Add a file in master node /apps/wso2/wso2am-1.10.0/repository/deployment/server  and check in worker node, that same file has been copied there

10. Further you can check the log to see the incron logs 

tail /var/log/syslog