cloud_init_worker.yaml

#cloud-config
apt_upgrade: false
apt_update: false
manage_etc_hosts: false
package_update: false
package_upgrade: false

write_files:

- content: |
    {
    "server": false,
    "datacenter": "application",
    "data_dir": "/var/consul",
    "encrypt": "uohStneoKEoVYZIASGp6Nw==",
    "log_level": "INFO",
    "enable_syslog": false,
    "retry_join": ["{{variables.master_host_ip}}"], 
    "rejoin_after_leave": true,
    "services": [{"name":"worker_cluster","port":9100}, {"name":"app_docker_cluster","port":9200}]
    }
  path: /etc/consul/config.json


# set hostname
#- content: |
#    #!/bin/sh
#    if [ $reason = "BOUND" ]; then
#        oldhostname=$(hostname -s)
#        if [ $oldhostname != $new_host_name ]; then
#            # Rename Host
#            echo $new_host_name > /etc/hostname
#            hostname -F /etc/hostname
#            # Update /etc/hosts if needed
#            TMPHOSTS=/etc/hosts.dhcp.new
#            if ! grep "$new_ip_address $new_host_name.$new_domain_name $new_host_name" /etc/hosts; then
#                # Remove the 127.0.1.1 put there by the debian installer
#                grep -v '127\.0\.1\.1 ' < /etc/hosts > $TMPHOSTS
#                # Add the our new ip address and name
#                echo "$new_ip_address $new_host_name.$new_domain_name $new_host_name" >> $TMPHOSTS
#                mv $TMPHOSTS /etc/hosts
#            fi
#            # Recreate SSH2 keys
#            export DEBIAN_FRONTEND=noninteractive 
#            dpkg-reconfigure openssh-server
#        fi
#    fi
#  path: /etc/dhcp/dhclient-exit-hooks.d/sethostname

# set hostname

- content: |
    #!/bin/bash
    echo "Setup NETWORK starts."
    myhost=`hostname`
    ipaddress=`ifconfig | awk '/inet addr/{print substr($2,6)}' | grep -v 127.0.0.1 | head -n 1`
    cp /etc/hosts /etc/hosts.old
    grep -v "$myhost" /etc/hosts.old > /etc/hosts

    echo "IPADDRESS: $ipaddress"
    echo "$ipaddress $myhost" >> /etc/hosts

    rm -rf /etc/resolvconf/*
    echo "Setup NETWORK finished."
  path: /bin/consul-set-network.sh
  permissions: '755'

- path: /etc/resolvconf/resolv.conf.d/base
  content: |
    nameserver 8.8.8.8


runcmd:
  - adduser --disabled-password --gecos "" prometheus
  - /bin/consul-set-network.sh
  #- sudo hostnamectl set-hostname $(date +%s | sha256sum | base64 | head -c 32 ; echo)
# host: ubuntu
  - sudo dhclient
  - oldhostname=$(hostname -s)
  - new_host_name=worker-$(date +%s | sha256sum | base64 | head -c 32 ; echo)
  - echo $new_host_name > /etc/hostname
  - hostname -F /etc/hostname
  - line=127.0.1.1'\t'$new_host_name
  - sed -i "s/$oldhostname/$new_host_name/g" /etc/hosts
  - echo $line >> /etc/hosts
  - export DEBIAN_FRONTEND=noninteractive 
  - dpkg-reconfigure openssh-server
  - resolvconf -u
  - echo nameserver 8.8.8.8 >> /etc/resolv.conf
# Docker
  - apt-get update
  - apt-get install -y --no-install-recommends apt-transport-https ca-certificates curl software-properties-common wget unzip
  - curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
  - add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
  - apt-get update
  - apt-get install -y docker-ce=17.09.1~ce-0~ubuntu
  - systemctl enable docker
# Connect to Swarm
  - wget --retry-connrefused -qO /tmp/swarm_join {{variables.master_host_ip}}:2375/v1.26/swarm
  - export TOKEN=$(grep -Eo 'SWMTKN-[[:alnum:]]*-[[:alnum:]]*-[[:alnum:]]*' /tmp/swarm_join | head -1)
  - docker swarm join --token $TOKEN {{variables.master_host_ip}}:2377

# Infra services start
  - export IP=$(hostname -I | cut -d\  -f1)
  - sudo docker run -d --net=host -e 'CONSUL_LOCAL_CONFIG={"leave_on_terminate":true}' -p 8301:8301 -p 8301:8301/udp -p 8300:8300 -p 8302:8302 -p 8302:8302/udp -p 8400:8400 -p 8500:8500 -p 8600:8600/udp -v /etc/consul/:/etc/consul consul:1.0.0 agent -advertise=$IP -retry-join={{variables.master_host_ip}} -config-file=/etc/consul/config.json 
  - sudo docker run  --volume=/:/rootfs:ro  --volume=/var/run:/var/run:rw  --volume=/sys:/sys:ro  --volume=/var/lib/docker/:/var/lib/docker:ro  --publish=9200:8080  --detach=true  --name=cadvisor google/cadvisor:v0.28.3
  - sudo docker run -d -e "NODE_ID=$(hostname)" --net=jqueuer_network --name jqueuer_agent_$IP -v /var/run/docker.sock:/var/run/docker.sock -v $(which docker):/usr/bin/docker --log-driver syslog --log-opt syslog-address=udp://{{variables.master_host_ip}}:5514 --log-opt tag=$(hostname) jaydes/jqueuer_agent
  - sudo docker run -d -p 9100:9100 prom/node-exporter:v0.15.2