[root@k8s-dbg-master-1 etcd]# etcdctl --help NAME: etcdctl - A simple command line client for etcd3.
USAGE: etcdctl
VERSION: 3.3.4
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 historyin 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 historyhashfor 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 timeoutfor short running command (excluding dial timeout) --debug[=false] enable client-side debug logging --dial-timeout=2s dial timeoutfor client connections -d, --discovery-srv="" domain name to query for SRV records describing cluster endpoints --endpoints=[127.0.0.1:2379] 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 timeoutfor 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)
10.240.0.17:2379 is healthy: successfully committed proposal: took = 3.345431ms 10.240.0.19:2379 is healthy: successfully committed proposal: took = 3.767967ms 10.240.0.18:2379 is healthy: successfully committed proposal: took = 4.025451ms
3.4. 集群成员
跟集群成员相关的命令如下：
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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
例如 etcdctl member list列出集群成员的命令。
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etcdctl --endpoints=http://172.16.5.4:12379 member list -w table
+-----------------+---------+-------+------------------------+-----------------------------------------------+ | ID | STATUS | NAME | PEER ADDRS | CLIENT ADDRS | +-----------------+---------+-------+------------------------+-----------------------------------------------+ | c856d92a82ba66a | started | etcd0 | http://172.16.5.4:2380 | http://172.16.5.4:2379,http://172.16.5.4:4001 | +-----------------+---------+-------+------------------------+-----------------------------------------------+
# etcdctl get --help 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=0 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=0 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 timeoutfor short running command (excluding dial timeout) --debug[=false] enable client-side debug logging --dial-timeout=2s dial timeoutfor client connections --endpoints=[127.0.0.1:2379] gRPC endpoints --hex[=false] print byte strings as hex encoded strings --insecure-skip-tls-verify[=false] skip server certificate verification --insecure-transport[=true] disable transport security 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)