Finish consul update

Add more idempotency features to provisioning script. Add Consul configuration file for use with initctl on Ubuntu. Update IP addresses in use. Re-arrange provisioners in Vagrantfile.

consul/Vagrantfile

@@ -2,8 +2,8 @@
 # vi: set ft=ruby :
 
 # Specify Vagrant version, Vagrant API version, and Vagrant clone location
-Vagrant.require_version ">= 1.6.0"
-VAGRANTFILE_API_VERSION = "2"
+Vagrant.require_version '>= 1.6.0'
+VAGRANTFILE_API_VERSION = '2'
 ENV['VAGRANT_VMWARE_CLONE_DIRECTORY'] = '~/.vagrant'
 ENV['VAGRANT_DEFAULT_PROVIDER'] = 'vmware_fusion'
 #ENV['VAGRANT_DEFAULT_PROVIDER'] = 'vmware_appcatalyst'
@@ -23,38 +23,38 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 
   # Iterate through entries in YAML file to create VMs
   servers.each do |server|
-    config.vm.define server["name"] do |srv|
+    config.vm.define server['name'] do |srv|
 
       # Don't check for box updates
       srv.vm.box_check_update = false
 
       # Specify hostname and Vagrant box
-      srv.vm.hostname = server["name"]
-      srv.vm.box = server["box"]
+      srv.vm.hostname = server['name']
+      srv.vm.box = server['box']
 
       # Assign an additional static private network
-      srv.vm.network "private_network", ip: server["priv_ip"]
+      srv.vm.network 'private_network', ip: server['priv_ip']
 
       # Specify default synced folder; requires VMware Tools
-      srv.vm.synced_folder ".", "/vagrant", disabled: true
-
-      # Provision consul to the VMs
-      srv.vm.provision "shell", path: "consul.sh"
+      srv.vm.synced_folder '.', '/vagrant', disabled: true
 
       # Copy in the Consul configuration files
-      srv.vm.provision "file", source: "bootstrap.json", destination: "/etc/consul.d/bootstrap/config.json"
-      srv.vm.provision "file", source: "server.json", destination: "/etc/consul.d/server/config.json"
+      srv.vm.provision 'file', source: 'server.json', destination: '/home/vagrant/config.json'
+      srv.vm.provision 'file', source: 'consul.conf', destination: '/home/vagrant/consul.conf'
+
+      # Provision consul to the VMs
+      srv.vm.provision 'shell', path: 'consul.sh'
 
       # Configure VMs with RAM and CPUs per settings in servers.yml
       srv.vm.provider :vmware_fusion do |vmw|
-        vmw.vmx["memsize"] = server["ram"]
-        vmw.vmx["numvcpus"] = server["vcpu"]
+        vmw.vmx['memsize'] = server['ram']
+        vmw.vmx['numvcpus'] = server['vcpu']
       end # srv.vm.provider vmware_fusion
 
       # Configure VMs with RAM and CPUs per settings in servers.yml
       srv.vm.provider :vmware_appcatalyst do |vmw|
-        vmw.vmx["memsize"] = server["ram"]
-        vmw.vmx["numvcpus"] = server["vcpu"]
+        vmw.vmx['memsize'] = server['ram']
+        vmw.vmx['numvcpus'] = server['vcpu']
       end # srv.vm.provider vmware_appcatalyst
     end # config.vm.define
   end # servers.each

consul/bootstrap.json

@@ -1,8 +0,0 @@
-{
-	"bootstrap": true,
-	"server": true,
-	"datacenter": "dc1",
-	"data_dir": "/tmp",
-	"log_level": "INFO",
-	"enable_syslog": true
-}

consul/consul.conf

@@ -0,0 +1,19 @@
+description "Consul server process"
+
+start on runlevel [2345]
+stop on runlevel [!2345]
+
+respawn
+
+script
+  if [ -f "/etc/service/consul" ]; then
+    . /etc/service/consul
+  fi
+
+export GOMAXPROCS=`nproc`
+
+exec /usr/local/bin/consul agent \
+  -config-dir="/etc/consul.d/server" \
+  ${CONSUL_FLAGS} \
+  >>/var/log/consul.log 2>&1
+end script

consul/consul.sh

@@ -1,11 +1,17 @@
 #!/bin/bash
 
 # Update list of packages
+export DEBIAN_FRONTEND=noninteractive
 sudo apt-get update
 
-# Install unzip package, needed to decompress Consul download
-export DEBIAN_FRONTEND=noninteractive
-sudo apt-get -y install unzip
+# Install packages as needed
+if [[ ! -e /usr/bin/curl ]]; then
+  apt-get -yqq install curl
+fi
+
+if [[ ! -e /usr/bin/unzip ]]; then
+  apt-get -yqq install unzip
+fi
 
 # Download and install Consul binary, if needed
 if [[ ! -e /usr/local/bin/consul ]];then
@@ -21,8 +27,12 @@ if [[ ! -e /usr/local/bin/consul ]];then
   sudo mv consul /usr/local/bin/
 fi
 
-# Create consul user
-useradd -M -d /var/consul -r -s /usr/bin/nologin consul
+# Create consul user, if it doesn't already exist
+if [ -z "$(getent passwd consul)" ]; then
+  useradd -M -d /var/consul -r -s /usr/bin/nologin consul
+ else
+   echo "Consul user already created."
+ fi
 
 # Create and configure Consul working directory
 sudo mkdir -p /var/consul

consul/server.json

@@ -5,5 +5,5 @@
 	"data_dir": "/tmp",
 	"log_level": "INFO",
 	"enable_syslog": true,
-	"start_join": ["192.168.1.101", "192.168.1.102", "192.168.1.103"]
+	"start_join": ["192.168.100.101", "192.168.100.102", "192.168.100.103"]
 }

consul/servers.yml

@@ -3,14 +3,14 @@
   box: "slowe/ubuntu-trusty-x64"
   ram: "512"
   vcpu: "1"
-  priv_ip: 192.168.1.101
+  priv_ip: 192.168.100.101
 - name: "consul-02"
   box: "slowe/ubuntu-trusty-x64"
   ram: "512"
   vcpu: "1"
-  priv_ip: 192.168.1.102
+  priv_ip: 192.168.100.102
 - name: "consul-03"
   box: "slowe/ubuntu-trusty-x64"
   ram: "512"
   vcpu: "1"
-  priv_ip: 192.168.1.103
+  priv_ip: 192.168.100.103