etcd man page

--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.

--listen-metrics-urls
     List of URLs to listen on for the metrics and health endpoints.

--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.

--initial-election-tick-advance true
     Whether to fast-forward initial election ticks on boot for faster election.

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

--backend-batch-interval 0s
     BackendBatchInterval is the maximum time before commit the backend transaction.

--backend-batch-limit 0
     BackendBatchLimit is the maximum operations before commit the backend transaction.

--max-txn-ops 128
     Maximum number of operations permitted in a transaction.

--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.

--discovery-srv-name
     Service name to query when using DNS discovery.

--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.

--pre-vote false
     Enable to run an additional Raft election phase.

--proxy off
     Valid values include ["off" "on" "readonly"]

--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.

--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.

--client-crl-file
     Path to the client certificate revocation list file.

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

--auto-tls false
     Client TLS using generated certificates

--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

--peer-crl-file
     Path to the peer certificate revocation list file.

--peer-cert-allowed-cn
     Allowed CN for inter peer authentication.

--cipher-suites
     Comma-separated list of supported TLS cipher suites between client/server and peers (empty will be auto-populated by Go).

--cors *
     Comma-separated white list of origins for CORS, or cross-origin resource sharing, (empty or * means allow all)

--host-whitelist *
     Comma-separated acceptable hostnames from HTTP client requests, if server is not secure (empty means allow all).

--logger capnslog
     Specify 'zap' for structured logging or 'capnslog'.

--log-output default
     DEPRECATED: use '--log-outputs'.

--log-outputs default
     Specify 'stdout' or 'stderr' to skip journald logging even when running under systemd, or list of comma separated output targets.

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

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

--version false
     Print the version and exit.

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

--auto-compaction-mode periodic
     interpret 'auto-compaction-retention' one of: periodic|revision. 'periodic' for duration based retention, defaulting to hours if no time unit is provided (e.g. '5m'). 'revision' for revision number based retention.

--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.

--bcrypt-cost 10
     Specify bcrypt algorithm cost factor for auth password hashing.

--enable-grpc-gateway true
     Enable GRPC gateway.

--experimental-initial-corrupt-check false
     Enable to check data corruption before serving any client/peer traffic.

--experimental-corrupt-check-time 0s
     Duration of time between cluster corruption check passes.

--experimental-enable-v2v3
     v3 prefix for serving emulated v2 state.

--experimental-backend-bbolt-freelist-type
     ExperimentalBackendFreelistType specifies the type of freelist that boltdb backend uses(array and map are supported types)

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