Haproxy configuration

config/public

@@ -9,6 +9,11 @@ DB_PORT="testdb"
 DB_NAME="testdb"
 
 # Port Mapping
+## Frontend Port will be used by frontend container to expose itself
 FRONTEND_PORT="30381"
+## Backend Port will be used by bachend container to expose itself
 BACKEND_PORT="30382"
+## Haproxy Port will be used by haproxy container to expose webserver & backends based on uri
 HAPROXY_PORT="80"
+## Haproxy Stats Port will display haproxy stats interface
+HAPROXY_STATS_PORT="81"

haproxy/config/haproxy.cfg

@@ -1,26 +0,0 @@
-global
-  stats socket /var/run/api.sock user haproxy group haproxy mode 660 level admin expose-fd listeners
-  log stdout format raw local0 info
-
-defaults
-  mode http
-  timeout client 10s
-  timeout connect 5s
-  timeout server 10s
-  timeout http-request 10s
-  log global
-
-frontend stats
-  bind *:8404
-  stats enable
-  stats uri /
-  stats refresh 10s
-
-frontend myfrontend
-  bind :80
-  default_backend webservers
-
-backend webservers
-  server s1 web1:8080 check
-  server s2 web2:8080 check
-  server s3 web3:8080 check

haproxy/config/haproxy.cfg.b2

@@ -0,0 +1,29 @@
+global
+    log stdout format raw local0 info
+
+defaults
+    mode http
+    timeout client 10s
+    timeout connect 5s
+    timeout server 10s
+    timeout http-request 10s
+    log global
+
+frontend stats
+    bind *:HAPROXY_STATS_PORT
+    stats enable
+    stats uri /
+    stats refresh 10s
+
+frontend web
+    bind :HAPROXY_PORT
+    default_backend webui
+
+    acl uri_api path_beg /api
+    use_backend api if uri_api
+
+backend webui
+    server webui H_LOCAL_IP:FRONTEND_PORT check
+
+backend api
+    server api H_LOCAL_IP:BACKEND_PORT check

haproxy/haproxy-compose.yaml

@@ -1,8 +0,0 @@
-version: 3
-services:
-  haproxy:
-    image: haproxy:alpine
-    ports:
-    - "80:80"
-    voluems:
-    - ./config/haproxy.cfg:/usr/local/etc/haproxy:ro

haproxy/haproxy-compose.yaml.b2

@@ -0,0 +1,12 @@
+version: "3"
+services:
+  haproxy:
+    image: haproxy:alpine
+    ports:
+    - "HAPROXY_PORT:HAPROXY_PORT"
+    - "HAPROXY_STATS_PORT:HAPROXY_STATS_PORT"
+    volumes:
+    - ./config/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro
+networks:
+  proxy:
+    external: true

haproxy/reconfigure-haproxy.sh

@@ -3,12 +3,36 @@
 # Variables
 
 # Funcitons
+## Load config from file
 function loadconfig {
     source config/public
     source config/private
 }
+## Load variables from host
+function hostconfig {
+    H_LOCAL_IP=$(hostname -i | cut -d ' ' -f 1)
+}
+
+function copytemplates {
+    cp ./haproxy/config/haproxy.cfg.b2 ./haproxy/config/haproxy.cfg
+    cp ./haproxy/haproxy-compose.yaml.b2 ./haproxy/haproxy-compose.yaml
+}
+
+## Bajia Tempalting (Bash & Jinja) 
+function b2templating {
+    ### HAPROXY config
+    sed -i "s/H_LOCAL_IP/$H_LOCAL_IP/g" ./haproxy/config/haproxy.cfg
+    sed -i "s/FRONTEND_PORT/$FRONTEND_PORT/g" ./haproxy/config/haproxy.cfg
+    sed -i "s/BACKEND_PORT/$BACKEND_PORT/g" ./haproxy/config/haproxy.cfg
+    sed -i "s/HAPROXY_STATS_PORT/$HAPROXY_STATS_PORT/g" ./haproxy/config/haproxy.cfg
+    sed -i "s/HAPROXY_PORT/$HAPROXY_PORT/g" ./haproxy/config/haproxy.cfg
+    ### Docker Compose
+    sed -i "s/HAPROXY_PORT/$HAPROXY_PORT/g" ./haproxy/haproxy-compose.yaml
+    sed -i "s/HAPROXY_STATS_PORT/$HAPROXY_STATS_PORT/g" ./haproxy/haproxy-compose.yaml
+}
 
 # Main Script
 loadconfig
-
-echo $BACKEND_PORT
+hostconfig
+copytemplates
+b2templating

makefile

@@ -40,12 +40,12 @@ frontend-image-push:
 
 # Haproxy - Only used for local
 
-haproxy:
+haproxy: reconfigure-haproxy haproxy-restart
 
 haproxy-stop:
-
+	docker-compose -f haproxy/haproxy-compose.yaml down
 haproxy-start:
-
+	docker-compose -f haproxy/haproxy-compose.yaml up -d
 haproxy-restart: haproxy-stop haproxy-start
 
 # Config Templating - Only used for local