Further changes

ansible.cfg

@@ -1,5 +1,4 @@
 [defaults]
-#added parameters for actual management of LXC nodes with ansible because of bridged
+#added parameters for actual management of LXC nodes with ansible because of bridged networking packet loss
-#networking packet loss
 gather_timeout = 30
 timeout = 30

ansible_provisioning.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 [ `id -u` -ne 0 ] && exit 1
 test -f /root/.ssh/id_rsa.pub || ssh-keygen -t rsa -b 4096 -N '' -f /root/.ssh/id_rsa
-ansible-playbook -i inventory/hosts --skip-tags swarm --diff -v stack.yml
+ansible-playbook -i inventory/hosts --skip-tags swarm --diff -v swarm-galera.yml

ansible_swarm_config.sh

@@ -1,3 +1,3 @@
 #!/bin/bash
 [ `id -u` -ne 0 ] && exit 1
-ansible-playbook -i inventory/hosts --tags swarm --diff -v stack.yml
+ansible-playbook -i inventory/hosts --tags swarm --diff -v swarm-galera.yml

roles/lxc_swarm/tasks/Dockerfile.yml

@@ -1,4 +1,7 @@
 ---
+- setup:
+  tags: galera
+
 - name: Copy galera template
   template:
     src: galera.cnf.j2
@@ -7,6 +10,7 @@
     group: root
     mode: '0644'
     remote_src: no
+  tags: galera
 
 - name: Galera template fix
   shell: sed -i "s/  /,/g;s/ 1/1/g;s/ "/"/g" /opt/galera.cnf

roles/lxc_swarm/tasks/lxc_nodes.yml

@@ -48,4 +48,5 @@
     rule: allow
     interface: lxcbr0
     direction: in
+    from_ip: "10.0.3.0/24"
   when: inventory_hostname in groups['manager']   

roles/lxc_swarm/templates/Dockerfile.j2

@@ -6,5 +6,6 @@ RUN add-apt-repository "deb [arch=amd64,arm64,i386,ppc64el] http://mirrors.corei
 RUN apt-get update
 RUN apt install -y rsync mariadb-server-10.4 galera-4 mariadb-client-10.4
 RUN systemctl unmask mariadb
-COPY /galera.cnf /etc/mysql/conf.d/galera.cnf
+COPY /opt/galera.cnf /etc/mysql/conf.d/galera.cnf
+RUN echo "wsrep_node_address=`ip a s eth0|grep inet|head -1|awk '{print $2}'|cut -d "/" -f 1`" >> /etc/mysql/conf.d/galera.cnf
 ENTRYPOINT ["mysqld","{{ extra_docker_options }}"]

roles/lxc_swarm/templates/galera.cnf.j2

@@ -16,5 +16,6 @@ wsrep_cluster_address="gcomm://{% for host in groups['workers'] %} {{hostvars[ho
 wsrep_sst_method=rsync
 
 # Galera Node Configuration
-wsrep_node_address="{{ ansible_default_ipv4.address }}"
+#wsrep_node_address="{{ ansible_default_ipv4.address }}"
-wsrep_node_name="{{ ansible_hostname }}"
+#wsrep_node_name="{{ ansible_hostname }}"
+wsrep_node_name="{{ nodes[0] if ansible_hostname in groups['workers'][0] else nodes[1] }}"

roles/lxc_swarm/vars/main.yml

@@ -4,3 +4,6 @@ workers:
   - "10.0.3.100"
   - "10.0.3.101"
 #  - "10.0.3.102"
+nodes:
+  - "node1"
+  - "node2"

stack.yaml

@@ -0,0 +1,91 @@
+version: '3.2'
+
+services:
+
+  db_cluster_node1:
+
+    image: ubuntu:galera-node-worker1
+    
+#    environment:
+#     - NODENAME={{.Node.Hostname}}
+#     - NODEID={{.Node.ID}}
+#     - SERVICEID={{.Service.ID}}
+#     - SERVICENAME={{.Service.Name}}
+#     - TASKID={{.Task.ID}}
+#     - TASKNAME={{.Task.Name}}
+#     - TASKREPID={{.Task.Slot}}
+    hostname: node1
+
+    volumes:
+
+      - /var/container_data/mysql:/var/lib/mysql
+    
+    networks:
+      galera_net:
+
+    deploy:
+      replicas: 1
+      restart_policy:
+        delay: 10s
+        max_attempts: 10
+        window: 60s
+      placement:
+        constraints:
+          - node.labels.node1 == true
+          - node.role == worker
+          #- node.group == galera
+    ports:
+     - mode: host
+      # target: 3306
+      # published: 3306
+       target: 4567
+       published: 4567
+      # target: 4568
+      # published: 4568
+      # target: 4568
+      # published: 4568
+
+      #- "10.0.3.100:3306:3306"
+      #- "10.0.3.100:4567:4567"
+      #- "10.0.3.100:4568:4568"
+      #- "10.0.3.100:4444:4444"
+
+  db_cluster_node2:
+
+    image: ubuntu:galera-node-worker2
+
+    hostname: node2
+
+    volumes:
+
+      - /var/container_data/mysql:/var/lib/mysql
+
+    networks:
+      galera_net:
+
+    deploy:
+      replicas: 1
+      restart_policy:
+        delay: 10s
+        max_attempts: 10
+        window: 60s
+      placement:
+        constraints:
+          - node.labels.node2 == true
+          - node.role == worker
+#          - node.group == galera
+    depends_on:
+      - db_cluster_node1
+    ports:
+      - mode: host
+        target: 4567
+        published: 4567
+#      - "10.0.3.101:3306:3306"      
+#      - "10.0.3.101:4567:4567"
+#      - "10.0.3.101:4568:4568"
+#      - "10.0.3.101:4444:4444"
+
+
+networks:
+  galera_net:
+

stack.yml

@@ -1,5 +0,0 @@
----
-- hosts: all
-  gather_facts: no
-  roles:
-    - lxc_swarm

swarm-galera.yml

@@ -1,88 +1,5 @@
-version: '3.2'
+---
-
+- hosts: all
-services:
+  gather_facts: no
-
+  roles:
-  db_cluster_node1:
+    - lxc_swarm
-
-    image: ubuntu:galera-node-worker1
-    
-#    environment:
-#     - NODENAME={{.Node.Hostname}}
-#     - NODEID={{.Node.ID}}
-#     - SERVICEID={{.Service.ID}}
-#     - SERVICENAME={{.Service.Name}}
-#     - TASKID={{.Task.ID}}
-#     - TASKNAME={{.Task.Name}}
-#     - TASKREPID={{.Task.Slot}}
-
-    volumes:
-
-      - /var/container_data/mysql:/var/lib/mysql
-    
-    networks:
-      galera_net:
-
-    deploy:
-      replicas: 1
-      restart_policy:
-        delay: 10s
-        max_attempts: 10
-        window: 60s
-      placement:
-        constraints:
-          - node.labels.node1 == true
-          - node.role == worker
-          #- node.group == galera
-    ports:
-     - mode: host
-      # target: 3306
-      # published: 3306
-       target: 4567
-       published: 4567
-      # target: 4568
-      # published: 4568
-      # target: 4568
-      # published: 4568
-
-      #- "10.0.3.100:3306:3306"
-      #- "10.0.3.100:4567:4567"
-      #- "10.0.3.100:4568:4568"
-      #- "10.0.3.100:4444:4444"
-
-  db_cluster_node2:
-
-    image: ubuntu:galera-node-worker2
-
-    volumes:
-
-      - /var/container_data/mysql:/var/lib/mysql
-
-    networks:
-      galera_net:
-
-    deploy:
-      replicas: 1
-      restart_policy:
-        delay: 10s
-        max_attempts: 10
-        window: 60s
-      placement:
-        constraints:
-          - node.labels.node2 == true
-          - node.role == worker
-#          - node.group == galera
-    depends_on:
-      - db_cluster_node1
-    ports:
-      - mode: host
-        target: 4567
-        published: 4567
-#      - "10.0.3.101:3306:3306"      
-#      - "10.0.3.101:4567:4567"
-#      - "10.0.3.101:4568:4568"
-#      - "10.0.3.101:4444:4444"
-
-
-networks:
-  galera_net:
-