First commit

ansible/roles/consul/templates/config.json

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+{
+  "log_level": "INFO",
+  "node_name": "{{ ansible_hostname }}",
+  "domain": "{{ consul_domain }}",
+  "server": true,
+  "key_file": "{{ consul_key_file }}",
+  "cert_file": "{{ consul_cert_file }}",
+  "ca_file": "{{ consul_ca_file }}",
+  "verify_incoming": true,
+  "verify_outgoing": true,
+  "verify_server_hostname": true,
+  "encrypt": "{{ consul_secret_key }}",
+  "ui": true,
+  "leave_on_terminate": true,
+  "data_dir": "/opt/consul",
+  "datacenter": "{{ consul_datacenter | mandatory }}",
+  "client_addr": "{{ consul_client_addr }}",
+  "bind_addr": "{{ consul_bind_addr }}",
+  "advertise_addr": "{{ consul_advertise_addr }}",
+  "bootstrap_expect": {{ consul_nodes | length }},
+  "retry_join": ["{{ consul_nodes | join('", "') }}"],
+  "enable_syslog": true,
+  "performance": {
+    "raft_multiplier": 1
+  }
+}

ansible/roles/consul/templates/consul.service

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+[Unit]
+Description="HashiCorp Consul - A service mesh solution"
+Documentation=https://www.consul.io/
+Requires=network-online.target
+After=network-online.target
+ConditionFileNotEmpty=/etc/consul/config.json
+
+[Service]
+Type=notify
+User=consul
+Group=consul
+ExecStart=/usr/local/bin/consul agent -config-file=/etc/consul/config.json
+ExecReload=/usr/local/bin/consul reload
+KillMode=process
+Restart=on-failure
+LimitNOFILE=65536
+
+[Install]
+WantedBy=multi-user.target