DEV-380: added haproxy stuff to be ready for communication in case of M-M-replication for mariadb

group_vars/all/plain.yml

@@ -217,3 +217,5 @@ selfsigned_ca_private_key_passphrase: '{{ selfsigned_ca_private_key_passphrase_v
   
 prometheus_alert_diskspaceusage_warning: 85
 prometheus_alert_pg_replication_lag: 120
+
+wordpress_haproxy_admin_password: "{{ wordpress_haproxy_admin_password_vault | default('haproxy-admin') }}"

group_vars/connect_wordpress/main.yml

@@ -1,6 +1,6 @@
 ---
 
-connect_wordpress_maria_host: "{{ shared_service_maria_hostname }}"
+connect_wordpress_maria_host: "mariaproxy"
 connect_wordpress_maria_database: "{{ stage }}_{{ tenant_id }}_{{ cluster_name }}_connect_wordpress"
 connect_wordpress_maria_username: "{{ connect_wordpress_maria_database }}"
 connect_wordpress_maria_password: "connect-wordpress-maria-admin"

group_vars/stage_dev/plain.yml

@@ -58,12 +58,18 @@ shared_service_pg_slave_ip: "{{ stage_server_infos
   | list
   | first
   | default('-') }}"
-shared_service_maria_ip: "{{ stage_server_infos
+shared_service_maria_1st_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-maria-01' )
   | map(attribute='private_ip')
   | list
   | first
   | default('-') }}"
+shared_service_maria_2nd_ip: "{{ stage_server_infos
+  | selectattr('name', 'match', stage + '-maria-02' )
+  | map(attribute='private_ip')
+  | list
+  | first
+  | default('-') }}"
 shared_service_keycloak_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-keycloak-01' )
   | map(attribute='private_ip')
@@ -139,7 +145,8 @@ shared_service_management_ip: "{{ stage_server_infos
 
 shared_service_kube_ip: "{{ stage_private_ingress_loadbalancer_ip | default('-') }}"
 
-shared_service_maria_hostname: "{{ stage }}-maria-01"
+shared_service_maria_1st_hostname: "{{ stage }}-maria-01"
+shared_service_maria_2nd_hostname: "{{ stage }}-maria-02"
 shared_service_postgres_01_hostname: "{{ stage }}-postgres-01"
 shared_service_elastic_stack_01_hostname: "{{ stage }}-elastic-stack-elastic-01"
 shared_service_elastic_stack_02_hostname: "{{ stage }}-elastic-stack-elastic-02"
@@ -193,8 +200,12 @@ shared_service_hosts: [
     name: "{{ shared_service_elastic_stack_logstash_01_hostname }}"
   },
   {
-    ip: "{{ shared_service_maria_ip }}",
+    ip: "{{ shared_service_maria_1st_ip }}",
-    name: "{{ shared_service_maria_hostname }}"
+    name: "{{ shared_service_maria_1st_hostname }}"
+  },
+  {
+    ip: "{{ shared_service_maria_2nd_ip }}",
+    name: "{{ shared_service_maria_2nd_hostname }}"
   },
   {
     ip: "{{ shared_service_pg_master_ip }}",

group_vars/stage_prodnso/plain.yml

@@ -58,12 +58,18 @@ shared_service_pg_slave_ip: "{{ stage_server_infos
   | list
   | first
   | default('-') }}"
-shared_service_maria_ip: "{{ stage_server_infos
+shared_service_maria_1st_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-maria-01' )
   | map(attribute='private_ip')
   | list
   | first
   | default('-') }}"
+shared_service_maria_2nd_ip: "{{ stage_server_infos
+  | selectattr('name', 'match', stage + '-maria-02' )
+  | map(attribute='private_ip')
+  | list
+  | first
+  | default('-') }}"
 shared_service_keycloak_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-keycloak-01' )
   | map(attribute='private_ip')
@@ -139,7 +145,8 @@ shared_service_management_ip: "{{ stage_server_infos
 
 shared_service_kube_ip: "{{ stage_private_ingress_loadbalancer_ip | default('-') }}"
 
-shared_service_maria_hostname: "{{ stage }}-maria-01"
+shared_service_maria_1st_hostname: "{{ stage }}-maria-01"
+shared_service_maria_2nd_hostname: "{{ stage }}-maria-02"
 shared_service_postgres_01_hostname: "{{ stage }}-postgres-01"
 shared_service_elastic_stack_01_hostname: "{{ stage }}-elastic-stack-elastic-01"
 shared_service_elastic_stack_02_hostname: "{{ stage }}-elastic-stack-elastic-02"
@@ -193,8 +200,12 @@ shared_service_hosts: [
     name: "{{ shared_service_elastic_stack_logstash_01_hostname }}"
   },
   {
-    ip: "{{ shared_service_maria_ip }}",
+    ip: "{{ shared_service_maria_1st_ip }}",
-    name: "{{ shared_service_maria_hostname }}"
+    name: "{{ shared_service_maria_1st_hostname }}"
+  },
+  {
+    ip: "{{ shared_service_maria_2nd_ip }}",
+    name: "{{ shared_service_maria_2nd_hostname }}"
   },
   {
     ip: "{{ shared_service_pg_master_ip }}",

group_vars/stage_qa/plain.yml

@@ -58,12 +58,18 @@ shared_service_pg_slave_ip: "{{ stage_server_infos
   | list
   | first
   | default('-') }}"
-shared_service_maria_ip: "{{ stage_server_infos
+shared_service_maria_1st_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-maria-01' )
   | map(attribute='private_ip')
   | list
   | first
   | default('-') }}"
+shared_service_maria_2nd_ip: "{{ stage_server_infos
+  | selectattr('name', 'match', stage + '-maria-02' )
+  | map(attribute='private_ip')
+  | list
+  | first
+  | default('-') }}"
 shared_service_keycloak_ip: "{{ stage_server_infos
   | selectattr('name', 'match', stage + '-keycloak-01' )
   | map(attribute='private_ip')
@@ -139,7 +145,8 @@ shared_service_management_ip: "{{ stage_server_infos
 
 shared_service_kube_ip: "{{ stage_private_ingress_loadbalancer_ip | default('-') }}"
 
-shared_service_maria_hostname: "{{ stage }}-maria-01"
+shared_service_maria_1st_hostname: "{{ stage }}-maria-01"
+shared_service_maria_2nd_hostname: "{{ stage }}-maria-02"
 shared_service_postgres_01_hostname: "{{ stage }}-postgres-01"
 shared_service_elastic_stack_01_hostname: "{{ stage }}-elastic-stack-elastic-01"
 shared_service_elastic_stack_02_hostname: "{{ stage }}-elastic-stack-elastic-02"
@@ -193,8 +200,12 @@ shared_service_hosts: [
     name: "{{ shared_service_elastic_stack_logstash_01_hostname }}"
   },
   {
-    ip: "{{ shared_service_maria_ip }}",
+    ip: "{{ shared_service_maria_1st_ip }}",
-    name: "{{ shared_service_maria_hostname }}"
+    name: "{{ shared_service_maria_1st_hostname }}"
+  },
+  {
+    ip: "{{ shared_service_maria_2nd_ip }}",
+    name: "{{ shared_service_maria_2nd_hostname }}"
   },
   {
     ip: "{{ shared_service_pg_master_ip }}",

roles/connect_wordpress/vars/main.yml

@@ -27,6 +27,23 @@ wordpress_docker: {
     },
   ],
   services: [
+    {
+      name: "mariaproxy",
+      image_name: "haproxytech/haproxy-alpine",
+      image_version: "2.2.24",
+      ports: [
+        {
+          "external": "16666",
+          "internal": "6666",
+        },
+      ],
+      volumes: [
+        '"./config/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro"',
+      ],
+      networks: [
+        '"back-tier"',
+      ],
+    },
     {
       name: "{{ wordpress_id }}",
       image_name: "{{ wordpress_image_name }}",

templates/wordpress/config/haproxy.cfg.j2

@@ -0,0 +1,31 @@
+global
+        user haproxy
+        group haproxy
+        daemon
+        maxconn 4096
+
+defaults
+        mode    tcp
+        balance roundrobin
+        timeout client      30000ms
+        timeout server      30000ms
+        timeout connect      3000ms
+        retries 3
+
+frontend stats
+        bind *:6666
+        mode http
+        stats enable
+        stats uri /haproxystats
+        stats show-node
+        stats auth {{ wordpress_haproxy_admin_username | default('haproxy-admin') }}:{{ wordpress_haproxy_admin_password }}
+        stats refresh 10s
+
+frontend wordpress_backend
+        bind 0.0.0.0:3306
+        default_backend mariadb_servers
+
+backend mariadb_servers
+        option tcp-check
+        server maria-01 {{ shared_service_maria_1st_hostname }}:3306 maxconn 2048 check
+#        server maria-02 {{ shared_service_maria_2nd_hostname }}:3306 maxconn 2048 check