Mariadb overlay network addition

roles/lxc_swarm/tasks/deploy.yml

@@ -10,28 +10,20 @@
 - name: Deploy swarm stack deployment file
   shell: docker stack deploy -c stack.yaml stack
 
+#- pause:
+#    seconds: 30
+
 - name: Update swarm stack service "bnode" with proper environmental variables
   shell: |
-    unset MASTER_ADDR
-    mcontainer_addr=`ssh root@10.0.3.100 "docker ps|xargs -n1|grep -i NAMES -A 1|tail -1"`
+    sleep 60; mcontainer_addr=`ssh root@10.0.3.100 "docker ps|xargs -n1|grep -i NAMES -A 1|tail -1"`
     MASTER_ADDR=`ssh -t root@10.0.3.100 "docker exec -it $mcontainer_addr ip a s|grep -i 10.0|head -1 2>/dev/null" 2>&1 |grep inet|awk '{print $2}'|cut -d "/" -f 1|tr -d ' '`
-    [ -z $MASTER_ADDR ] && echo "Node 1 hasn't yet been initialized" && exit 1
+    [ -z $MASTER_ADDR ] && echo "Node 1 hasn't yet been initialized"
     env MASTER_ADDR="${MASTER_ADDR}" docker stack deploy -c stack.yaml stack
-    env MASTER_ADDR="${MASTER_ADDR}" docker service scale stack_bnode=1
+#    env MASTER_ADDR="${MASTER_ADDR}" docker service scale stack_bnode=1
 #    sleep 30
   args:
     executable: /bin/bash
 
-#- name: Wait for seed container to start
-#  pause:
-#    seconds: 30
-
-#- name: Start mariadb cluster on node1
-#  shell: docker service scale stack_node1=1
-
-#- name: Remove seed container
-#  shell: docker service rm stack_seed
-
 #- name: Wait for nodes[0] container to start
 #  pause:
 #    seconds: 30

roles/lxc_swarm/tasks/swarm.yml

@@ -10,6 +10,11 @@
   register: worker_token
   when: inventory_hostname in groups['manager']
 
+- name: Create 'mariadb' overlay network
+  shell: docker network create -d overlay --subnet=10.0.10.0/24 mariadb
+  ignore_errors: true
+  when: inventory_hostname in groups['manager']
+
 - name: Prepare swarm workers
   docker_swarm:
     state: join

stack.yaml

@@ -1,82 +1,73 @@
-version: '3.4'
+version: '3.8'
 
 services:
-#  seed:
-#    image: colinmollenhour/mariadb-galera-swarm
-#    environment:
-#      - XTRABACKUP_PASSWORD_FILE=/run/secrets/xtrabackup_password
-#      - MYSQL_USER=user
-#      - MYSQL_PASSWORD_FILE=/run/secrets/mysql_password
-#      - MYSQL_DATABASE=database
-#      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/mysql_root_password
-#      - NODE_ADDRESS=^10.0.*.*
-#    networks:
-#      - galera_network
-#    command: seed
-#    deploy:
-#      placement:
-#        # Services must run only on workers with one service per container
-#        constraints:
-#          - node.labels.node1 == true
-#          - node.role == worker
-#    volumes:
-#      - /var/lib/mysql:/var/lib/mysql
-#    secrets:
-#      - xtrabackup_password
-#      - mysql_password
-#      - mysql_root_password
   anode:
     image: colinmollenhour/mariadb-galera-swarm
-#    hostname:
     environment:
       - XTRABACKUP_PASSWORD_FILE=/run/secrets/xtrabackup_password
-      - NODE_ADDRESS=^10.0.*.*
+      - MYSQL_USER=user
+      - MYSQL_PASSWORD_FILE=/run/secrets/mysql_password
+      - MYSQL_DATABASE=database
+      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/mysql_root_password
+      - NODE_ADDRESS=^10.0.10.*
       - HEALTHY_WHILE_BOOTING=1
     networks:
-      - galera_network
+      - mariadb
+    ports:
+     - mode: host
+       target: 4567
+       published: 4567
     command: node tasks.anode,tasks.bnode
     volumes:
       - /var/lib/mysql:/var/lib/mysql
     deploy:
+      resources:
+        limits:
+          cpus: '0.75'
+          memory: 250M
+        reservations:
+          cpus: '0.5'
+          memory: 100M
       # Replicated mode
       mode: replicated
       replicas: 1
-#      restart_policy:
-#        delay: 10s
-#        max_attempts: 10
-#        window: 60s
       placement:
         # Services must run only on workers with one service per container
-        #max_replicas_per_node: 1
+        max_replicas_per_node: 1
         constraints:
           - node.labels.node1 == true
           - node.role == worker
     secrets:
       - xtrabackup_password
+      - mysql_password
+      - mysql_root_password
   bnode:
     image: colinmollenhour/mariadb-galera-swarm
-    #hostname: bnode
     environment:
       - XTRABACKUP_PASSWORD_FILE=/run/secrets/xtrabackup_password
-      - NODE_ADDRESS=^10.0.*.*
+      - NODE_ADDRESS=^10.0.10.*
       - HEALTHY_WHILE_BOOTING=1
       - MASTER_ADDR
     networks:
-      - galera_network
+      - mariadb
     command: node $MASTER_ADDR,tasks.bnode
+#   command: node tasks.anode,tasks.bnode
     volumes:
       - /var/lib/mysql:/var/lib/mysql
     deploy:
+      resources:
+        limits:
+          cpus: '0.75' 
+          memory: 250M
+        reservations:
+          cpus: '0.5'
+          memory: 100M   
       # Replicated mode
       mode: replicated
-      replicas: 0
- #     restart_policy:
- #       delay: 10s
- #       max_attempts: 10
- #       window: 60s
+      replicas: 1
       placement:
         # Services must run only on workers with one service per container
-        #max_replicas_per_node: 1
+        max_replicas_per_node: 1
         constraints:
           - node.labels.node2 == true
           - node.role == worker
@@ -91,7 +82,9 @@ services:
 #    driver: local
 
 networks:
-  galera_network:
+  mariadb:
+    external:
+      name: mariadb
 
 secrets:
   xtrabackup_password:

swarmlab/Makefile

@@ -1,13 +0,0 @@
-all: preautomation provision swarm_deploy
-
-preautomation:
-	/bin/bash ./ansible_install.sh
-
-provision:
-	/bin/bash ./ansible_provisioning.sh
-
-swarm_deploy:
-	/bin/bash ./ansible_swarm_config.sh
-
-clean:
-	/bin/bash ./clean.sh

swarmlab/ansible.cfg

@@ -1,5 +0,0 @@
-[defaults]
-#added parameters for actual management of LXC nodes with ansible because of bridged networking packet loss
-gather_timeout = 30
-timeout = 45
-host_key_checking = False

swarmlab/ansible_install.sh

@@ -1,5 +0,0 @@
-#!/bin/bash
-[ `id -u` -ne 0  ] && exit 1
-echo "deb http://ppa.launchpad.net/ansible/ansible/ubuntu trusty main" >> /etc/apt/sources.list
-apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 93C4A3FD7BB9C367
-apt update && apt install -y ansible

swarmlab/ansible_provisioning.sh

@@ -1,4 +0,0 @@
-#!/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 swarm-galera.yml

swarmlab/ansible_swarm_config.sh

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