CoreOS Setup

cloud-config

#cloud-config

coreos:
  etcd:
    discovery: https://discovery.etcd.io/660d695900f203da9f9819cf42775896
    addr: $public_ipv4:4001
    peer-addr: $public_ipv4:7001
  fleet:
    public-ip: $public_ipv4   # used for fleetctl ssh command
  units:
    - name: etcd.service
      command: start
    - name: fleet.service
      command: start

haproxy.cfg

global
  log 127.0.0.1 local0
  log 127.0.0.1 local1 notice
  maxconn 4096
  daemon

defaults
  log global
  mode http
  option httplog
  option dontlognull
  option forwardfor
  option http-server-close
  stats enable
  stats auth admin:password
  stats uri /stats

frontend http-in
  bind *:80
  
  acl jenkins_subdomain hdr(host) -i jenkins.brandonraa.be
  
  use_backend jenkins_host if jenkins_subdomain
  
backend jenkins_host
  option httpclose
  option forwardfor
  server jenkins.brandonraa.be 127.0.0.1:8080 check

haproxy.service

[Unit]
Description=HAProxy
After=docker.service
After=etcdctl.service

[Service]
TimeoutStartSec=0
ExecStartPre=-/usr/bin/docker kill haproxy
ExecStartPre=-/usr/bin/docker rm haproxy
ExecStartPre=/usr/bin/docker pull haproxy
ExecStart=/usr/bin/docker run --name haproxy -p 80:80 -v /home/core/services/haproxy:/usr/local/etc/haproxy haproxy haproxy -db -f /usr/local/etc/haproxy/haproxy.cfg
ExecStop=/usr/bin/docker stop haproxy

jenkins.service

[Unit]
Description=Jenkins
After=docker.service
After=etcdctl.service

[Service]
TimeoutStartSec=0
ExecStartPre=-/usr/bin/docker kill jenkins
ExecStartPre=-/usr/bin/docker rm jenkins
ExecStartPre=/usr/bin/docker pull jenkins
ExecStart=/usr/bin/docker run --name jenkins -p 8080:8080 -v /home/core/services/jenkins:/var/jenkins_home jenkins
ExecStop=/usr/bin/docker stop jenkins

setup.sh

for svc in jenkins haproxy; do
  mkdir -p /home/core/services/${svc}
  docker pull $svc
  touch services/${svc}.service
done

fleetctl load jenkins.service
fleetctl start jenkins.service