Add healthcheck to docker (#13154)

Dockerfile

@@ -83,7 +83,7 @@ COPY ./deploy/docker/templates/supervisord/ templates/supervisord/
 COPY ./deploy/docker/templates/cron.d /etc/cron.d/
 RUN chmod 0644 /etc/cron.d/*
 
-RUN chmod +x entrypoint.sh renew-certificate.sh
+RUN chmod +x entrypoint.sh renew-certificate.sh healthcheck.sh
 
 # Disable setuid/setgid bits for the files inside container.
 RUN find / \( -path /proc -prune \) -o \( \( -perm -2000 -o -perm -4000 \) -print -exec chmod -s '{}' + \) || true
@@ -94,4 +94,5 @@ ENV PATH /opt/appsmith/utils/node_modules/.bin:$PATH
 EXPOSE 80
 EXPOSE 443
 ENTRYPOINT [ "/opt/appsmith/entrypoint.sh" ]
+HEALTHCHECK --interval=15s --timeout=15s --start-period=45s CMD "/opt/appsmith/healthcheck.sh"
 CMD ["/usr/bin/supervisord", "-n"]

app/client/Dockerfile

@@ -16,4 +16,5 @@ COPY ./docker/templates/nginx-app-https.conf.template /nginx-app-https.conf.temp
 
 # This is the script that is used to start Nginx when the Docker container starts
 COPY ./docker/start-nginx.sh /start-nginx.sh
+HEALTHCHECK --interval=15s --timeout=15s --start-period=15s --retries=3 CMD curl -f http://localhost:80/ || exit 1
 CMD ["/start-nginx.sh"]

app/server/Dockerfile

@@ -30,5 +30,5 @@ RUN chmod +x /entrypoint.sh
 #care of via the cache happens. The following statement would lead to copy because of change in hash value
 COPY ${JAR_FILE} server.jar
 COPY ${PLUGIN_JARS} /plugins/
-
+HEALTHCHECK --interval=15s --timeout=15s --start-period=15s --retries=3 CMD wget --no-verbose --spider http://localhost:8080/api/v1/users/me/ || exit 1
 ENTRYPOINT ["/entrypoint.sh"]

deploy/docker/scripts/healthcheck.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+healthy=true
+while read -r line
+  do
+    line_arr=($line)
+    process=${line_arr[0]}
+    status=${line_arr[1]}
+    if [ $status != "RUNNING" ]; then
+      healthy=false
+      echo "ERROR:- PROCESS: $process - STATUS: $status"
+    else
+      echo "PROCESS: $process - STATUS: $status"
+      if [[ "$process" == 'editor' ]]; then
+        if [[ $(curl -s -w "%{http_code}\n" http://localhost:80/ -o /dev/null) -ne 200 ]]; then
+           echo 'ERROR: Editor is down';
+           healthy=false
+        fi
+      elif [[ "$process" == "server" ]]; then
+        if [[ $(curl -s -w "%{http_code}\n" http://localhost:8080/api/v1/users/me/ -o /dev/null) -ne 200 ]]; then
+           echo 'ERROR: Server is down';
+           healthy=false
+        fi
+      elif [[ "$process" == "rts" ]]; then
+        if [[ $(curl -s -w "%{http_code}\n" http://localhost:8091/ -o /dev/null) -ne 302 ]]; then
+           echo 'ERROR: RTS is down';
+           healthy=false
+        fi
+      elif [[ "$process" == "mongo" ]]; then
+        if [[ $(mongo --eval  'db.runCommand("ping").ok') -ne 1 ]]; then
+            echo 'ERROR: Mongo is down';
+            healthy=false
+        fi
+       elif [[ "$process" == "redis" ]]; then
+        if [[ $(redis-cli ping) != 'PONG' ]]; then
+            echo 'ERROR: Redis is down';
+            healthy=false
+        fi
+      fi
+    fi
+  done <<< $(supervisorctl status all)
+if [ $healthy == true ]; then
+  exit 0
+else
+  exit 1
+fi