From ec2fe4cb48da71dd97074aae6b22f757afb45494 Mon Sep 17 00:00:00 2001
From: Wayne Schneider <wayne@indexdata.com>
Date: Mon, 15 Aug 2016 15:09:13 -0500
Subject: [PATCH] Update to use Docker networking instead of links.

---
 docker/docker-deploy.yml |   77 +++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 66 insertions(+), 11 deletions(-)

diff --git a/docker/docker-deploy.yml b/docker/docker-deploy.yml
index 9acbd96..20578b5 100644
--- a/docker/docker-deploy.yml
+++ b/docker/docker-deploy.yml
@@ -43,16 +43,17 @@
       become: yes
       service: name=docker enabled=yes state=started
 
-    - name: Build ZooKeeper links for Solr containers
-      set_fact:
-        zk_links: []
-        zk_solr: []
+    - name: Discover Docker networks
+      become: yes
+      command: docker network ls
+      register: docker_nets
+      changed_when: false
+
+    - name: Create luinet network
+      become: yes
+      command: docker network create luinet
+      when: docker_nets.stdout.find('luinet') == -1
 
-    - set_fact:
-        zk_links: "{{ zk_links + ['zk'+item+':ZK'+item] }}"
-        zk_solr: "{{ zk_solr + ['$ZK'+item+'_PORT_2181_TCP_ADDR:$ZK'+item+'_PORT_2181_TCP_PORT/solr'] }}"
-      with_sequence: start=1 end={{ num_zk_servers }}
-      
     - name: Launch ZooKeeper containers
       become: yes
       docker_container:
@@ -60,6 +61,25 @@
         image: jplock/zookeeper
       with_sequence: start=1 end={{ num_zk_servers }}
 
+    - name: Get ZooKeeper container networks
+      become: yes
+      command: docker inspect --format={% raw %}'{{json .NetworkSettings.Networks}}'{% endraw %} zk{{ item }}
+      register: zk_net
+      with_sequence: start=1 end={{ num_zk_servers }}
+      changed_when: false
+
+    - name: Connect ZooKeeper containers to luinet network
+      become: yes 
+      command: docker network connect luinet zk{{ item }}
+      with_sequence: start=1 end={{ num_zk_servers }}
+      when: (zk_net.results[item|int-1].stdout|from_json).luinet is not defined
+
+    - name: Disconnect ZooKeeper containers from bridge network
+      become: yes 
+      command: docker network disconnect bridge zk{{ item }}
+      with_sequence: start=1 end={{ num_zk_servers }}
+      when: (zk_net.results[item|int-1].stdout|from_json).bridge is defined
+
     - name: Get contents of /solr path in ZooKeeper
       become: yes
       command: docker exec -t zk1 bin/zkCli.sh get /solr
@@ -75,6 +95,16 @@
       become: yes
       docker_image: name=lui-solr path={{ docker_image_path }}
 
+    - name: Build ZooKeeper links for Solr containers
+      set_fact:
+    #     zk_links: []
+        zk_solr: []
+
+    - set_fact:
+    #     zk_links: "{{ zk_links + ['zk'+item+':ZK'+item] }}"
+        zk_solr: "{{ zk_solr + ['zk'+item+':2181'] }}"
+      with_sequence: start=1 end={{ num_zk_servers }}
+
     - name: Launch Solr containers
       become: yes
       docker_container:
@@ -82,9 +112,34 @@
         image: lui-solr
         tty: yes
         published_ports: "{{ 8983+item|int-1 }}:8983"
-        links: "{{ zk_links }}"
-        command: bash -c '/opt/solr/bin/solr start -f -z {{ zk_solr|join(",") }}'
+        command: bash -c '/opt/solr/bin/solr start -f -z {{ zk_solr|join(",") }}/solr'
+      with_sequence: start=1 end={{ num_solr_servers }}
+
+    - name: Get Solr container networks
+      become: yes
+      command: docker inspect --format={% raw %}'{{json .NetworkSettings.Networks}}'{% endraw %} solr{{ item }}
+      register: solr_net
+      with_sequence: start=1 end={{ num_solr_servers }}
+      changed_when: false
+
+    - name: Connect Solr containers to luinet network
+      become: yes 
+      command: docker network connect luinet solr{{ item }}
+      with_sequence: start=1 end={{ num_solr_servers }}
+      register: solr_luinet
+      when: (solr_net.results[item|int-1].stdout|from_json).luinet is not defined
+
+    - name: Disconnect Solr containers from bridge network
+      become: yes 
+      command: docker network disconnect bridge solr{{ item }}
+      with_sequence: start=1 end={{ num_solr_servers }}
+      when: (solr_net.results[item|int-1].stdout|from_json).bridge is defined
+
+    - name: Restart solr on network change
+      become: yes
+      command: docker restart solr{{ item }}
       with_sequence: start=1 end={{ num_solr_servers }}
+      when: solr_luinet.results[item|int-1]|changed
 
     - name: Wait for ZooKeeper to see Solr
       become: yes
-- 
1.7.10.4