etcd man page

--cors
     Comma-separated white list of origins for CORS (cross-origin resource sharing).

--data-dir
     Path to the data directory.

--wal-dir
     Path to the dedicated wal directory.

--listen-peer-urls http://localhost:2380
     List of URLs to listen on for peer traffic.

--listen-client-urls http://localhost:2379
     List of URLs to listen on for client traffic.

--max-snapshots 5
     Maximum number of snapshot files to retain (0 is unlimited).

--max-wals 5
     Maximum number of wal files to retain (0 is unlimited).

--name default
     Human-readable name for this member.

--snapshot-count 100000
     Number of committed transactions to trigger a snapshot to disk.

--heartbeat-interval 100
     Time (in milliseconds) of a heartbeat interval.

--election-timeout 1000
     Time (in milliseconds) for an election to timeout.

--quota-backend-bytes 0
     Raise alarms when backend size exceeds the given quota. 0 means use the default quota.

--max-request-bytes 1572864
     Maximum client request size in bytes the server will accept.

--grpc-keepalive-min-time 5s
     Minimum interval duration that a client should wait before pinging server.

--grpc-keepalive-interval 2h0m0s
     Frequency duration of server-to-client ping to check if a connection is alive (0 to disable).

--grpc-keepalive-timeout 20s
     Additional duration of wait before closing a non-responsive connection (0 to disable).

--initial-advertise-peer-urls http://localhost:2380
     List of this member's peer URLs to advertise to the rest of the cluster.

--advertise-client-urls http://localhost:2379
     List of this member's client URLs to advertise to the public.

--discovery
     Discovery URL used to bootstrap the cluster.

--discovery-fallback proxy
     Valid values include exit, proxy

--discovery-proxy
     HTTP proxy to use for traffic to discovery service.

--discovery-srv
     DNS domain used to bootstrap initial cluster.

--initial-cluster default=http://localhost:2380
     Initial cluster configuration for bootstrapping.

--initial-cluster-token etcd-cluster
     Initial cluster token for the etcd cluster during bootstrap.

--initial-cluster-state new
     Initial cluster state ('new' or 'existing').

--strict-reconfig-check true
     Reject reconfiguration requests that would cause quorum loss.

--enable-v2 true
     Accept etcd V2 client requests.

--proxy off
     Valid values include off, readonly, on

--proxy-failure-wait 5000
     Time (in milliseconds) an endpoint will be held in a failed state.

--proxy-refresh-interval 30000
     Time (in milliseconds) of the endpoints refresh interval.

--proxy-dial-timeout 1000
     Time (in milliseconds) for a dial to timeout.

--proxy-write-timeout 5000
     Time (in milliseconds) for a write to timeout.

--proxy-read-timeout 0
     Time (in milliseconds) for a read to timeout.

--ca-file
     DEPRECATED: Path to the client server TLS CA file.

--cert-file
     Path to the client server TLS cert file.

--key-file
     Path to the client server TLS key file.

--client-cert-auth false
     Enable client cert authentication.

--trusted-ca-file
     Path to the client server TLS trusted CA key file.

--auto-tls false
     Client TLS using generated certificates

--peer-ca-file
     DEPRECATED: Path to the peer server TLS CA file.

--peer-cert-file
     Path to the peer server TLS cert file.

--peer-key-file
     Path to the peer server TLS key file.

--peer-client-cert-auth false
     Enable peer client cert authentication.

--peer-trusted-ca-file
     Path to the peer server TLS trusted CA file.

--peer-auto-tls false
     Peer TLS using generated certificates

--debug false
     Enable debug-level logging for etcd.

--log-package-levels
     Specify a particular log level for each etcd package (eg: 'etcdmain=CRITICAL,etcdserver=DEBUG').

--log-output default
     Specify 'stdout' or 'stderr' to skip journald logging even when running under systemd.

--force-new-cluster false
     Force to create a new one member cluster.

--version false
     Print the version and exit.

--auto-compaction-retention 0
     Auto compaction retention for mvcc key value store in hour. 0 means disable auto compaction.

--enable-pprof false
     Enable runtime profiling data via HTTP server. Address is at client URL + "/debug/pprof/"

--metrics basic
     Set level of detail for exported metrics, specify 'extensive' to include histogram metrics

--auth-token simple
     Specify auth token specific options.