BootstrapExpect is set to 1; this is the same as Bootstrap mode.
bootstrap = true: do not enable unless necessary
==> Starting Consul agent...
==> Consul agent running!
           Version: 'v1.0.6'
           Node ID: '397bd6ef-dc01-9104-0087-537c1351531c'
         Node name: 'dev-aaf-aaf-sms-vault-0'
        Datacenter: 'dc1' (Segment: '<all>')
            Server: true (Bootstrap: true)
       Client Addr: [0.0.0.0] (HTTP: 8500, HTTPS: -1, DNS: 8600)
      Cluster Addr: 10.42.5.2 (LAN: 8301, WAN: 8302)
           Encrypt: Gossip: false, TLS-Outgoing: false, TLS-Incoming: false

==> Log data will now stream in as it occurs:

    2019/06/17 19:51:41 [INFO] raft: Initial configuration (index=1): [{Suffrage:Voter ID:397bd6ef-dc01-9104-0087-537c1351531c Address:10.42.5.2:8300}]
    2019/06/17 19:51:41 [INFO] raft: Node at 10.42.5.2:8300 [Follower] entering Follower state (Leader: "")
    2019/06/17 19:51:41 [INFO] serf: EventMemberJoin: dev-aaf-aaf-sms-vault-0.dc1 10.42.5.2
    2019/06/17 19:51:41 [INFO] serf: EventMemberJoin: dev-aaf-aaf-sms-vault-0 10.42.5.2
    2019/06/17 19:51:41 [INFO] consul: Adding LAN server dev-aaf-aaf-sms-vault-0 (Addr: tcp/10.42.5.2:8300) (DC: dc1)
    2019/06/17 19:51:41 [INFO] consul: Handled member-join event for server "dev-aaf-aaf-sms-vault-0.dc1" in area "wan"
    2019/06/17 19:51:41 [INFO] agent: Started DNS server 0.0.0.0:8600 (udp)
    2019/06/17 19:51:41 [INFO] agent: Started DNS server 0.0.0.0:8600 (tcp)
    2019/06/17 19:51:41 [INFO] agent: Started HTTP server on [::]:8500 (tcp)
    2019/06/17 19:51:41 [INFO] agent: started state syncer
==> Failed to check for updates: Get https://checkpoint-api.hashicorp.com/v1/check/consul?arch=amd64&os=linux&signature=f82dda76-2382-aca7-471d-e050cd83674d&version=1.0.6: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
    2019/06/17 19:51:48 [ERR] agent: failed to sync remote state: No cluster leader
    2019/06/17 19:51:50 [WARN] raft: Heartbeat timeout from "" reached, starting election
    2019/06/17 19:51:50 [INFO] raft: Node at 10.42.5.2:8300 [Candidate] entering Candidate state in term 2
    2019/06/17 19:51:50 [INFO] raft: Election won. Tally: 1
    2019/06/17 19:51:50 [INFO] raft: Node at 10.42.5.2:8300 [Leader] entering Leader state
    2019/06/17 19:51:50 [INFO] consul: cluster leadership acquired
    2019/06/17 19:51:50 [INFO] consul: New leader elected: dev-aaf-aaf-sms-vault-0
    2019/06/17 19:51:50 [INFO] consul: member 'dev-aaf-aaf-sms-vault-0' joined, marking health alive
    2019/06/17 19:51:51 [INFO] agent: Synced node info
    2019/06/17 19:51:52 [INFO] agent: Synced service "vault:10.42.5.2:8200"
    2019/06/17 19:51:52 [INFO] agent: Synced check "vault:10.42.5.2:8200:vault-sealed-check"
    2019/06/17 19:54:30 [INFO] agent: Synced check "vault:10.42.5.2:8200:vault-sealed-check"