adds consul configuration files

ansible/templates/consul-server.hcl.j2

@@ -10,5 +10,9 @@ addresses {
 }
 
 ports {
-  grpc  = 8502
+  grpc_tls  = 8502
+}
+
+ui_config {
+  enabled = true
 } 

ansible/templates/consul.hcl.j2

@@ -4,7 +4,7 @@ encrypt = "{{ consul_generated_encrypt_key }}"
 verify_incoming = true
 verify_outgoing = true
 verify_server_hostname = true
-bind_addr = "{{ GetPrivateInterfaces | include \"network\" \"10.10.0.0/24\" | attr \"address\" }}"
+bind_addr = "{% raw %}{{ GetPrivateInterfaces | include \"network\" \"10.10.0.0/24\" | attr \"address\" }}{% endraw %}"
 client_addr = "0.0.0.0"
 
 ca_file = "/etc/consul.d/consul-agent-ca.pem"
@@ -15,8 +15,9 @@ auto_encrypt {
   allow_tls = true
 }
 
-# TODO: add jinja template to add all except destination host address here
-retry_join = []
+# This ugly line is to get the IP addresses of the other consul servers, excluding the current host.
+# Consul cannot join itself, so we need to exclude the current host.
+retry_join = ["{{ groups.nomad|difference([inventory_hostname])| map('extract', hostvars, ['ansible_host'])|join('","') }}"]
 
 acl {
   enabled = false

ansible/templates/consul.service

@@ -0,0 +1,20 @@
+[Unit]
+Description="HashiCorp Consul - A service mesh solution"
+Documentation=https://www.consul.io/
+Requires=network-online.target
+After=network-online.target
+ConditionFileNotEmpty=/etc/consul.d/consul.hcl
+
+[Service]
+EnvironmentFile=-/etc/consul.d/consul.env
+User=consul
+Group=consul
+ExecStart=/usr/bin/consul agent -config-dir=/etc/consul.d/
+ExecReload=/bin/kill --signal HUP $MAINPID
+KillMode=process
+KillSignal=SIGTERM
+Restart=on-failure
+LimitNOFILE=65536
+
+[Install]
+WantedBy=multi-user.target