Fix initialization of dockerized services (closes #182)

Author: oguzhanunlu

provisioning/resources/init/snowplow_mini

@@ -1,96 +1,53 @@
 #!/bin/sh
+
 ### BEGIN INIT INFO
 # Provides:
-# Required-Start:    $remote_fs $syslog
-# Required-Stop:     $remote_fs $syslog
-# Default-Start:     2 3 4 5
-# Default-Stop:      0 1 6
-# Short-Description: Start daemon at boot time
-# Description:       Enable service provided by daemon.
+# Required-Start:	$docker
+# Required-Stop:	$docker
+# Default-Start:	2 3 4 5
+# Default-Stop:        0 1 6
+# Short-Description:	Snowplow Mini Services
 ### END INIT INFO
 
-cmd="docker-compose -f /home/ubuntu/snowplow/docker-compose.yml up -d && sleep 20"
-user="ubuntu"
+set -e
+
+YAMLFILE=/home/ubuntu/snowplow/docker-compose.yml
+OPTS="-f $YAMLFILE"
+UPOPTS="-d --no-recreate"
+
+up_cmd="cd /home/ubuntu/snowplow && sudo docker-compose up $UPOPTS"
+stop_cmd="cd /home/ubuntu/snowplow && sudo docker-compose stop"
+down_cmd="cd /home/ubuntu/snowplow && sudo docker-compose down"
 
 name="snowplow_mini"
 pid_file="/var/run/$name.pid"
 stdout_log="/var/log/$name.log"
 stderr_log="/var/log/$name.err"
 
-get_pid() {
-    cat "$pid_file"
-}
-
-is_running() {
-    [ -f "$pid_file" ] && ps `get_pid` > /dev/null 2>&1
-}
-
 case "$1" in
     start)
-    if is_running; then
-        echo "Already started"
-    else
-        echo "Starting $name"
-        if [ -z "$user" ]; then
-            sudo $cmd >> "$stdout_log" 2>> "$stderr_log" &
-        else
-            sudo -u "$user" $cmd >> "$stdout_log" 2>> "$stderr_log" &
-        fi
-        echo $! > "$pid_file"
-        if ! is_running; then
-            echo "Unable to start, see $stdout_log and $stderr_log"
-            exit 1
-        fi
-    fi
-    ;;
-    stop)
-    if is_running; then
-        echo -n "Stopping $name.."
-        kill `get_pid`
-        for i in {1..10}
-        do
-            if ! is_running; then
-                break
-            fi
+        echo -n "Starting Snowplow Mini..."
+        $up_cmd >> "$stdout_log" 2>> "$stderr_log" &
+        echo "done"
+        ;;
 
-            echo -n "."
-            sleep 1
-        done
-        echo
+    stop)
+        echo -n "Stopping Snowplow Mini..."
+        $stop_cmd >> "$stdout_log" 2>> "$stderr_log" &
+        echo "done"
+        ;;
 
-        if is_running; then
-            echo "Not stopped; may still be shutting down or shutdown may have failed"
-            exit 1
-        else
-            echo "Stopped"
-            if [ -f "$pid_file" ]; then
-                rm "$pid_file"
-            fi
-        fi
-    else
-        echo "Not running"
-    fi
-    ;;
     restart)
-    $0 stop
-    if is_running; then
-        echo "Unable to stop, will not attempt to start"
-        exit 1
-    fi
-    $0 start
-    ;;
-    status)
-    if is_running; then
-        echo "Running"
-    else
-        echo "Stopped"
-        exit 1
-    fi
-    ;;
+        echo -n "Restarting Snowplow Mini..."
+        $down_cmd >> "$stdout_log" 2>> "$stderr_log" &
+        $up_cmd >> "$stdout_log" 2>> "$stderr_log" &
+        echo "done"
+        ;;
+
     *)
-    echo "Usage: $0 {start|stop|restart|status}"
-    exit 1
-    ;;
+        echo "Usage: /etc/init.d/snowplow_mini {start|stop|restart|status}"
+        exit 1
+        ;;
 esac
 
-exit 0
+exit 0

provisioning/roles/docker/files/docker-compose.yml

@@ -32,8 +32,6 @@ services:
     image: docker.elastic.co/kibana/kibana-oss:6.3.1
     container_name: kibana
     restart: always
-    environment:
-      - /Users/oguzhanunlu/work/snowplow-mini/provisioning/resources/elasticsearch/config/kibana.yml:/usr/share/kibana/config/kibana.yml
     ports:
       - "5601:5601"
     depends_on:

provisioning/roles/docker/tasks/main.yml

@@ -32,6 +32,10 @@
   become: yes
   shell: cd {{main_dir}} && docker-compose up -d && sleep 20
 
+- name: Increase mmap count to recommended 262144 for Elasticsearch
+  become: yes
+  shell: echo "vm.max_map_count=262144" >> /etc/sysctl.conf && service procps restart
+
 - name: Wait for Elasticsearch port 9200 to become open on the host, don't start checking for 10 seconds
   wait_for:
     port: 9200

provisioning/roles/sp_mini_7_setup_init/tasks/main.yml

@@ -29,10 +29,6 @@
   become: yes
   shell: systemctl start snowplow_mini_control_plane_api
 
-- name: Increase mmap count to recommended 262144 for Elasticsearch
-  become: yes
-  shell: echo "vm.max_map_count=262144" >> /etc/sysctl.conf && service procps start
-
 - cron:
     name: "Add cronjob to crop ES good index's docs older than a week"
     special_time: weekly