etcd rest api基本操作
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from: https://segmentfault.com/a/1190000005649865
访问
http://discovery.etcd.io/e77afb997af5a84983baa98fd42cf12f
返回
{ "action": "get", "node": { "key": "/_etcd/registry/e77afb997af5a84983baa98fd42cf12f", "dir": true, "nodes": [ { "key": "/_etcd/registry/e77afb997af5a84983baa98fd42cf12f/4eb2dcba58da982f", "value": "etcd0=http://192.168.99.101:2380", "modifiedIndex": 1113260929, "createdIndex": 1113260929 }, { "key": "/_etcd/registry/e77afb997af5a84983baa98fd42cf12f/aa5569b385caf33b", "value": "etcd2=http://192.168.99.103:2380", "modifiedIndex": 1113261715, "createdIndex": 1113261715 }, { "key": "/_etcd/registry/e77afb997af5a84983baa98fd42cf12f/f84fe4a4e816e778", "value": "etcd1=http://192.168.99.102:2380", "modifiedIndex": 1113261726, "createdIndex": 1113261726 } ], "modifiedIndex": 1113260647, "createdIndex": 1113260647 }}操作
查看版本
curl http://192.168.99.101:2379/version返回
{"etcdserver":"2.3.6","etcdcluster":"2.3.0"}查看键
curl http://192.168.99.101:2379/v2/keys返回
{"action":"get","node":{"dir":true}}创建键值
put方法如果key之前存在，则默认会先删除，再新建一个key。如果想要直接update，则追加 -d prevExist=true，但是加了这个参数，如果key之前不存在会报错。
curl http://192.168.99.101:2379/v2/keys/hello -XPUT -d value="world"返回
{ "action": "set", "node": { "key": "/hello", "value": "world", "modifiedIndex": 8, "createdIndex": 8 }}创建目录
curl http://192.168.99.101:2379/v2/keys/dir -XPUT -d dir=true返回
{ "action": "set", "node": { "key": "/dir", "dir": true, "modifiedIndex": 9, "createdIndex": 9 }}查看键
curl http://192.168.99.101:2379/v2/keys返回
{ "action": "get", "node": { "dir": true, "nodes": [ { "key": "/hello", "value": "world", "modifiedIndex": 8, "createdIndex": 8 }, { "key": "/dir", "dir": true, "modifiedIndex": 9, "createdIndex": 9 } ] }}创建带ttl的键值
单位为秒
curl http://192.168.99.101:2379/v2/keys/ttlvar -XPUT -d value="ttl_value" -d ttl=10 返回
{ "action": "set", "node": { "key": "/ttlvar", "value": "ttl_value", "expiration": "2016-06-04T13:11:00.406180341Z", "ttl": 10, "modifiedIndex": 10, "createdIndex": 10 }}创建有序键值
curl http://192.168.99.101:2379/v2/keys/seqvar -XPOST -d value="seq1"curl http://192.168.99.101:2379/v2/keys/seqvar -XPOST -d value="seq2"curl http://192.168.99.101:2379/v2/keys/seqvar -XPOST -d value="seq3"curl http://192.168.99.101:2379/v2/keys/seqvar返回
{ "action": "get", "node": { "key": "/seqvar", "dir": true, "nodes": [ { "key": "/seqvar/00000000000000000012", "value": "seq1", "modifiedIndex": 12, "createdIndex": 12 }, { "key": "/seqvar/00000000000000000013", "value": "seq2", "modifiedIndex": 13, "createdIndex": 13 }, { "key": "/seqvar/00000000000000000014", "value": "seq3", "modifiedIndex": 14, "createdIndex": 14 } ], "modifiedIndex": 12, "createdIndex": 12 }}删除指定的键
curl http://192.168.99.101:2379/v2/keys/for_delete -XPUT -d value="fordelete"curl http://192.168.99.101:2379/v2/keys/curl http://192.168.99.101:2379/v2/keys/for_delete -XDELETEcurl http://192.168.99.101:2379/v2/keys/返回
{ "action": "delete", "node": { "key": "/for_delete", "modifiedIndex": 16, "createdIndex": 15 }, "prevNode": { "key": "/for_delete", "value": "fordelete", "modifiedIndex": 15, "createdIndex": 15 }}成员管理
列出所有集群成员
curl http://192.168.99.101:2379/v2/members返回
{ "members": [ { "id": "4eb2dcba58da982f", "name": "etcd0", "peerURLs": [ "http://192.168.99.101:2380" ], "clientURLs": [ "http://192.168.99.101:2379", "http://192.168.99.101:4001" ] }, { "id": "aa5569b385caf33b", "name": "etcd2", "peerURLs": [ "http://192.168.99.103:2380" ], "clientURLs": [ "http://192.168.99.103:2379", "http://192.168.99.103:4001" ] }, { "id": "f84fe4a4e816e778", "name": "etcd1", "peerURLs": [ "http://192.168.99.102:2380" ], "clientURLs": [ "http://192.168.99.102:2379", "http://192.168.99.102:4001" ] } ]}统计信息
查看leader
curl http://192.168.99.101:2379/v2/stats/leader返回
{ "leader": "4eb2dcba58da982f", "followers": { "aa5569b385caf33b": { "latency": { "current": 0.001687, "average": 0.0026333315088053265, "standardDeviation": 0.0082522530707236, "minimum": 0.000508, "maximum": 0.184366 }, "counts": { "fail": 0, "success": 8404 } }, "f84fe4a4e816e778": { "latency": { "current": 0.001158, "average": 0.017216567181926247, "standardDeviation": 1.236027691414708, "minimum": 0.000493, "maximum": 113.333953 }, "counts": { "fail": 0, "success": 8410 } } }}节点自身信息
curl http://192.168.99.101:2379/v2/stats/self返回
{ "name": "etcd0", "id": "4eb2dcba58da982f", "state": "StateLeader", "startTime": "2016-06-04T12:51:22.901345036Z", "leaderInfo": { "leader": "4eb2dcba58da982f", "uptime": "28m29.401994375s", "startTime": "2016-06-04T12:51:23.406751734Z" }, "recvAppendRequestCnt": 0, "sendAppendRequestCnt": 17544, "sendPkgRate": 10.52589669646476, "sendBandwidthRate": 746.7071116472099}查看集群运行状态
curl http://192.168.99.101:2379/v2/stats/store返回
{ "getsSuccess": 7, "getsFail": 16, "setsSuccess": 8, "setsFail": 0, "deleteSuccess": 1, "deleteFail": 0, "updateSuccess": 0, "updateFail": 0, "createSuccess": 6, "createFail": 0, "compareAndSwapSuccess": 0, "compareAndSwapFail": 0, "compareAndDeleteSuccess": 0, "compareAndDeleteFail": 0, "expireCount": 1, "watchers": 0}阅读全文
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