Merge pull request #1 from vshn/develop

Initial docker image

Author: knudsenTaunus

Dockerfile

@@ -0,0 +1,14 @@
+FROM haproxy:2.0-alpine
+
+LABEL maintainer="soufiane.benali@vshn.ch"
+
+COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg
+
+USER 1001
+
+ENV DB1_ADDRESS= \
+  DB2_ADDRESS= \
+  DB3_ADDRESS= \
+  DB1_PORT=3306 \
+  DB2_PORT=3306 \
+  DB3_PORT=3306 

README.md

@@ -1,2 +1,29 @@
 # galera-haproxy
 HAProxy docker image with custom configuration
+
+Dockerized HAProxy with default config file for a multi node galera cluster. To ovveride the default configuration it's possible using the environemnt variables.
+
+## Run
+You need to specify the addresses for DB1 through DB3 as well as passwords for service and monitoring users:
+```
+docker run -e DB1_ADDRESS=127.0.0.1 -e DB2_ADDRESS=127.0.0.2 -e DB3_ADDRESS=127.0.0.3 haproxy-mysql
+```
+
+## Configuration
+Config is done through env vars:
+
+| Name                          | Default value       | Description                             |
+|-------------------------------|---------------------|-----------------------------------------|
+| `DB1_ADDRESS`                 |                     | Address for DB1                 |
+| `DB1_PORT`                    | `3306`              | Port for DB1                    |
+| `DB2_ADDRESS`                 |                     | Address for DB2                 |
+| `DB2_PORT`                    | `3306`              | Port for DB2                    |
+| `DB3_ADDRESS`                 |                     | Address for DB3                 |
+| `DB3_PORT`                    | `3306`              | Port for DB3                    |
+
+
+## Build
+```
+docker build --rm -t vshn/galera-haproxy:1.0.0 .
+docker push vshn/galera-haproxy:1.0.0
+```

haproxy.cfg

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+global
+  log stdout local0
+
+defaults
+  log global
+
+  option dontlognull
+  timeout connect 5000
+  timeout client 10000
+  timeout server 10000
+
+listen stats
+  bind 0.0.0.0:8070
+  mode http
+  option httplog
+  stats enable
+  stats uri /
+
+listen galera
+  bind 0.0.0.0:3306
+  mode tcp
+  option mysql-check
+  server mysql-1 ${DB1_ADDRESS}:${DB1_PORT} check
+  server mysql-2 ${DB3_ADDRESS}:${DB2_PORT} check backup
+  server mysql-3 ${DB2_ADDRESS}:${DB3_PORT} check backup