新建租約
新建一個過期時間為120s的租約
# etcdctl lease grant 120 lease 018f6d7bb11aba0d granted with TTL(120s)
查看新建的租約信息
# etcdctl lease list found 1 leases 018f6d7bb11aba0d
# etcdctl lease timetolive 018f6d7bb11aba0d --keys
lease 018f6d7bb11aba0d granted with TTL(120s), remaining(99s), attached keys([])
新建key，並為該key指定租約
# etcdctl put name alice --lease="018f6d7bb11aba0d" OK # etcdctl put name1 tina --lease="018f6d7bb11aba0d" OK
# etcdctl lease timetolive 018f6d7bb11aba0d --keys
lease 018f6d7bb11aba0d granted with TTL(120s), remaining(60s), attached keys([name name1])
# etcdctl get --prefix ""
name
alice
name1
tina
等到租約過期后，再次查看租約已經過期，對應的key也已經被自動刪除
# etcdctl lease timetolive 018f6d7bb11aba0d --keys
lease 018f6d7bb11aba0d already expired
續約
新建租約並賦予key值
# etcdctl lease grant 30 lease 018f6d7bd032c117 granted with TTL(30s) # etcdctl put name alice --lease=018f6d7bd032c117 OK
在租約即將過期時進行續約，命令不會自動結束，會一直顯示該窗口
# etcdctl lease keep-alive 018f6d7bd032c117 lease 018f6d7bd032c117 keepalived with TTL(30) lease 018f6d7bd032c117 keepalived with TTL(30) lease 018f6d7bd032c117 keepalived with TTL(30) ......
重新打開一個窗口，查看該租約續約信息，可以看到該租約會自動續約，相應key值也不會被刪除
# etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(23s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(22s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(21s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(20s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(29s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(28s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(27s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(27s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(26s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(25s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(25s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(24s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(23s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(22s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(22s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(20s), attached keys([name]) # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 granted with TTL(30s), remaining(29s), attached keys([name])
回收租約
回收租約會自動刪除與該租約關聯的key
# etcdctl lease revoke 018f6d7bd032c117 lease 018f6d7bd032c117 revoked # etcdctl lease timetolive 018f6d7bd032c117 --keys lease 018f6d7bd032c117 already expired # etcdctl get name