[root@localhost etcd-v3.3.13-linux-amd64]# ./etcd --listen-client-urls 'http://0.0.0.0:2379' --advertise-client-urls 'htt p://0.0.0.0:2379'

-- ::40.261923 I | etcdmain: etcd Version: 3.3.

-- ::40.262093 I | etcdmain: Git SHA: 98d3084

-- ::40.262107 I | etcdmain: Go Version: go1.10.8

-- ::40.262128 I | etcdmain: Go OS/Arch: linux/amd64

-- ::40.262144 I | etcdmain: setting maximum number of CPUs to , total number of available CPUs is

-- ::40.262176 W | etcdmain: no data-dir provided, using default data-dir ./default.etcd

-- ::40.263503 I | embed: listening for peers on http://localhost:2380

-- ::40.264070 I | embed: listening for client requests on 0.0.0.0:

-- ::40.273565 I | etcdserver: name = default

-- ::40.273598 I | etcdserver: data dir = default.etcd

-- ::40.273607 I | etcdserver: member dir = default.etcd/member

-- ::40.273613 I | etcdserver: heartbeat = 100ms

-- ::40.273618 I | etcdserver: election = 1000ms

-- ::40.273624 I | etcdserver: snapshot count =

-- ::40.273638 I | etcdserver: advertise client URLs = http://0.0.0.0:2379

-- ::40.273646 I | etcdserver: initial advertise peer URLs = http://localhost:2380

-- ::40.273657 I | etcdserver: initial cluster = default=http://localhost:2380

-- ::40.276843 I | etcdserver: starting member 8e9e05c52164694d in cluster cdf818194e3a8c32

-- ::40.276890 I | raft: 8e9e05c52164694d became follower at term

-- ::40.276911 I | raft: newRaft 8e9e05c52164694d [peers: [], term: , commit: , applied: , lastindex: , lastterm: ]

-- ::40.276919 I | raft: 8e9e05c52164694d became follower at term

-- ::40.281968 W | auth: simple token is not cryptographically signed

-- ::40.287898 I | etcdserver: starting server... [version: 3.3., cluster version: to_be_decided]

-- ::40.292469 I | etcdserver: 8e9e05c52164694d as single-node; fast-forwarding  ticks (election ticks )

-- ::40.293629 I | etcdserver/membership: added member 8e9e05c52164694d [http://localhost:2380] to cluster cdf818194e3a8c32

-- ::40.378709 I | raft: 8e9e05c52164694d is starting a new election at term

-- ::40.378779 I | raft: 8e9e05c52164694d became candidate at term

-- ::40.378823 I | raft: 8e9e05c52164694d received MsgVoteResp from 8e9e05c52164694d at term

-- ::40.378855 I | raft: 8e9e05c52164694d became leader at term

-- ::40.378876 I | raft: raft.node: 8e9e05c52164694d elected leader 8e9e05c52164694d at term

-- ::40.399670 I | etcdserver: published {Name:default ClientURLs:[http://0.0.0.0:2379]} to cluster cdf818194e3a8c32

-- ::40.401716 E | etcdmain: forgot to set Type=notify in systemd service file?

-- ::40.401893 I | etcdserver: setting up the initial cluster version to 3.3

-- ::40.403708 N | etcdserver/membership: set the initial cluster version to 3.3

-- ::40.403871 I | etcdserver/api: enabled capabilities for version 3.3

-- ::40.403922 I | embed: ready to serve client requests

-- ::40.406114 N | embed: serving insecure client requests on [::]:, this is strongly discouraged!

[root@localhost etcd-v3.3.13-linux-amd64]# ./etcdctl

NAME:

   etcdctl - A simple command line client for etcd.

WARNING:

   Environment variable ETCDCTL_API is not set; defaults to etcdctl v2.

   Set environment variable ETCDCTL_API= to use v3 API or ETCDCTL_API= to use v2 API.

USAGE:

   etcdctl [global options] command [command options] [arguments...]

VERSION:

   3.3.

COMMANDS:

     backup          backup an etcd directory

     cluster-health  check the health of the etcd cluster

     mk              make a new key with a given value

     mkdir           make a new directory

     rm              remove a key or a directory

     rmdir           removes the key if it is an empty directory or a key-value pair

     get             retrieve the value of a key

     ls              retrieve a directory

     set             set the value of a key

     setdir          create a new directory or update an existing directory TTL

     update          update an existing key with a given value

     updatedir       update an existing directory

     watch           watch a key for changes

     exec-watch      watch a key for changes and exec an executable

     member          member add, remove and list subcommands

     user            user add, grant and revoke subcommands

     role            role add, grant and revoke subcommands

     auth            overall auth controls

     help, h         Shows a list of commands or help for one command

GLOBAL OPTIONS:

   --debug                          output cURL commands which can be used to reproduce the request

   --no-sync                        don't synchronize cluster information before sending request

   --output simple, -o simple       output response in the given format (simple, `extended` or `json`) (default: "simple")

   --discovery-srv value, -D value  domain name to query for SRV records describing cluster endpoints

   --insecure-discovery             accept insecure SRV records describing cluster endpoints

   --peers value, -C value          DEPRECATED - "--endpoints" should be used instead

   --endpoint value                 DEPRECATED - "--endpoints" should be used instead

   --endpoints value                a comma-delimited list of machine addresses in the cluster (default: 

"http://127.0.0.1:2379,http://127.0.0.1:4001")

   --cert-file value                identify HTTPS client using this SSL certificate file

   --key-file value                 identify HTTPS client using this SSL key file

   --ca-file value                  verify certificates of HTTPS-enabled servers using this CA bundle

   --username value, -u value       provide username[:password] and prompt if password is not supplied.

   --timeout value                  connection timeout per request (default: 2s)

   --total-timeout value            timeout for the command execution (except watch) (default: 5s)

   --help, -h                       show help

   --version, -v                    print the version

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl

NAME:

        etcdctl - A simple command line client for etcd3.

USAGE:

        etcdctl

VERSION:

        3.3.

API VERSION:

        3.3

COMMANDS:

        get                     Gets the key or a range of keys

        put                     Puts the given key into the store

        del                     Removes the specified key or range of keys [key, range_end)

        txn                     Txn processes all the requests in one transaction

        compaction              Compacts the event history in etcd

        alarm disarm            Disarms all alarms

        alarm list              Lists all alarms

        defrag                  Defragments the storage of the etcd members with given endpoints

        endpoint health         Checks the healthiness of endpoints specified in `--endpoints` flag

        endpoint status         Prints out the status of endpoints specified in `--endpoints` flag

        endpoint hashkv         Prints the KV history hash for each endpoint in --endpoints

        move-leader             Transfers leadership to another etcd cluster member.

        watch                   Watches events stream on keys or prefixes

        version                 Prints the version of etcdctl

        lease grant             Creates leases

        lease revoke            Revokes leases

        lease timetolive        Get lease information

        lease list              List all active leases

        lease keep-alive        Keeps leases alive (renew)

        member add              Adds a member into the cluster

        member remove           Removes a member from the cluster

        member update           Updates a member in the cluster

        member list             Lists all members in the cluster

        snapshot save           Stores an etcd node backend snapshot to a given file

        snapshot restore        Restores an etcd member snapshot to an etcd directory

        snapshot status         Gets backend snapshot status of a given file

        make-mirror             Makes a mirror at the destination etcd cluster

        migrate                 Migrates keys in a v2 store to a mvcc store

        lock                    Acquires a named lock

        elect                   Observes and participates in leader election

        auth enable             Enables authentication

        auth disable            Disables authentication

        user add                Adds a new user

        user delete             Deletes a user

        user get                Gets detailed information of a user

        user list               Lists all users

        user passwd             Changes password of user

        user grant-role         Grants a role to a user

        user revoke-role        Revokes a role from a user

        role add                Adds a new role

        role delete             Deletes a role

        role get                Gets detailed information of a role

        role list               Lists all roles

        role grant-permission   Grants a key to a role

        role revoke-permission  Revokes a key from a role

        check perf              Check the performance of the etcd cluster

        help                    Help about any command

OPTIONS:

      --cacert=""                               verify certificates of TLS-enabled secure servers using this CA bundle

      --cert=""                                 identify secure client using this TLS certificate file

      --command-timeout=5s                      timeout for short running command (excluding dial timeout)

      --debug[=false]                           enable client-side debug logging

      --dial-timeout=2s                         dial timeout for client connections

  -d, --discovery-srv=""                        domain name to query for SRV records describing cluster endpoints

      --endpoints=[127.0.0.1:]              gRPC endpoints

  -h, --help[=false]                            help for etcdctl

      --hex[=false]                             print byte strings as hex encoded strings

      --insecure-discovery[=true]               accept insecure SRV records describing cluster endpoints

      --insecure-skip-tls-verify[=false]        skip server certificate verification

      --insecure-transport[=true]               disable transport security for client connections

      --keepalive-time=2s                       keepalive time for client connections

      --keepalive-timeout=6s                    keepalive timeout for client connections

      --key=""                                  identify secure client using this TLS key file

      --user=""                                 username[:password] for authentication (prompt if password is not supplied)

  -w, --write-out="simple"                      set the output format (fields, json, protobuf, simple, table)

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  put "name" "sunlong"

OK

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  delete "name" "sunlong"

Error: unknown command "delete" for "etcdctl"

Run 'etcdctl --help' for usage.

Error: unknown command "delete" for "etcdctl"

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  del "name" "sunlong"

[root@localhost etcd-v3.3.13-linux-amd64]#

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  get "name"

name

sunlong

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  get "name"

name

sunlong

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  get "name"

NAME:

        get - Gets the key or a range of keys

USAGE:

        etcdctl get [options] <key> [range_end]

OPTIONS:

      --consistency="l"                 Linearizable(l) or Serializable(s)

      --from-key[=false]                Get keys that are greater than or equal to the given key using byte compare

      --keys-only[=false]               Get only the keys

      --limit=                         Maximum number of results

      --order=""                        Order of results; ASCEND or DESCEND (ASCEND by default)

      --prefix[=false]                  Get keys with matching prefix

      --print-value-only[=false]        Only write values when using the "simple" output format

      --rev=                           Specify the kv revision

      --sort-by=""                      Sort target; CREATE, KEY, MODIFY, VALUE, or VERSION

GLOBAL OPTIONS:

      --cacert=""                               verify certificates of TLS-enabled secure servers using this CA bundle

      --cert=""                                 identify secure client using this TLS certificate file

      --command-timeout=5s                      timeout for short running command (excluding dial timeout)

      --debug[=false]                           enable client-side debug logging

      --dial-timeout=2s                         dial timeout for client connections

  -d, --discovery-srv=""                        domain name to query for SRV records describing cluster endpoints

      --endpoints=[127.0.0.1:]              gRPC endpoints

      --hex[=false]                             print byte strings as hex encoded strings

      --insecure-discovery[=true]               accept insecure SRV records describing cluster endpoints

      --insecure-skip-tls-verify[=false]        skip server certificate verification

      --insecure-transport[=true]               disable transport security for client connections

      --keepalive-time=2s                       keepalive time for client connections

      --keepalive-timeout=6s                    keepalive timeout for client connections

      --key=""                                  identify secure client using this TLS key file

      --user=""                                 username[:password] for authentication (prompt if password is not supplied)

  -w, --write-out="simple"                      set the output format (fields, json, protobuf, simple, table)

[root@localhost etcd-v3.3.13-linux-amd64]#

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  put "/cron/jobs/job1"  "{...job1}"

OK

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  put "/cron/jobs/job2"  "{...job2}"

OK

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  get "/cron/jobs/" --prefix

/cron/jobs/job1

{...job1}

/cron/jobs/job2

{...job2}

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  put "/cron/jobs/job2"  "{...job2...111}"

OK

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  del "/cron/jobs/job2"

[root@localhost etcd-v3.3.13-linux-amd64]# ETCDCTL_API= ./etcdctl  watch "/cron/jobs/" --prefix

PUT

/cron/jobs/job2

{...job2...}

DELETE

/cron/jobs/job2