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pinglamb/Dockerfile

Created August 8, 2016 17:39
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  1. pinglamb created this gist Aug 8, 2016.
    8 changes: 8 additions & 0 deletions Dockerfile
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    FROM haproxy:latest

    RUN apt-get update
    RUN apt-get install -y netcat-openbsd

    COPY haproxy.cfg /usr/local/etc/haproxy/haproxy.cfg

    EXPOSE 80
    31 changes: 31 additions & 0 deletions haproxy.conf
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    global
    log 127.0.0.1 local0 notice
    maxconn 2000
    stats socket /var/run/haproxy.sock mode 600 level admin

    defaults
    log global
    mode http
    option httplog
    option dontlognull
    retries 3
    option redispatch
    timeout connect 5000
    timeout client 10000
    timeout server 10000

    frontend gitlab
    bind *:8888
    mode http
    stats enable
    stats refresh 30s
    stats uri /haproxy?stats
    default_backend gitlab

    backend gitlab
    balance roundrobin
    mode http
    option httpchk GET /
    http-check expect ! rstatus ^5
    server gitlab1 192.168.99.100:10080 check
    server gitlab2 192.168.99.100:10081 check
    39 changes: 39 additions & 0 deletions run.sh
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    #!/bin/bash

    SLOT1='gitlab1'
    SLOT2='gitlab2'

    SLOT=`docker exec -it gitlab-haproxy bash -c 'echo "show stat" | nc -U /var/run/haproxy.sock' | grep DOWN | cut -f2 -d',' | head -n 1`
    if [ -z "$SLOT" ]; then
    echo 'No slot is available for docker-compose up'
    exit
    fi

    cd $SLOT
    docker-compose up -d

    echo "Waiting the new server to go up ..."
    CURRENT=0
    TIMEOUT=60
    RETRY_EVERY=5
    DOWN=$SLOT
    while [ $CURRENT -lt $TIMEOUT ] && [ -n "$DOWN" ];
    do
    CURRENT=$(($CURRENT+$RETRY_EVERY))
    sleep $RETRY_EVERY
    DOWN=`docker exec -it gitlab-haproxy bash -c 'echo "show stat" | nc -U /var/run/haproxy.sock' | grep $SLOT | grep DOWN | cut -f2 -d',' | head -n 1`

    echo $CURRENT
    echo $DOWN
    done

    if [ -n "$DOWN" ]; then
    echo 'Timeout. Failed to stop the old server.'
    else
    if [ $SLOT1 == $SLOT ]; then
    cd ../$SLOT2
    else
    cd ../$SLOT1
    fi
    docker-compose stop
    fi