获取版本信息
代码语言：javascript复制[root@docker etcd-v2.2.4-linux-amd64]# curl -L http://127.0.0.1:2379/version
{"etcdserver":"2.2.4","etcdcluster":"2.2.0"}[root@docker etcd-v2.2.4-linux-amd64]#
[root@docker etcd-v2.2.4-linux-amd64]# 关键字空间操作
etcd主要在维护一个分层的关键字空间，关键字空间由关键字和目录构成，它们也被称作节点
etcd的绝大部分API都是在对这两类对象进行操作
给关键字赋值
代码语言：javascript复制[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/message -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/message","value":"Hello world","modifiedIndex":8,"createdIndex":8}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/message -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/message","value":"Hello world","modifiedIndex":9,"createdIndex":9},"prevNode":{"key":"/message","value":"Hello world","modifiedIndex":8,"createdIndex":8}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/message -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/message","value":"Hello world","modifiedIndex":10,"createdIndex":10},"prevNode":{"key":"/message","value":"Hello world","modifiedIndex":9,"createdIndex":9}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/message -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/message","value":"Hello world","modifiedIndex":11,"createdIndex":11},"prevNode":{"key":"/message","value":"Hello world","modifiedIndex":10,"createdIndex":10}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/message -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/message","value":"Hello world","modifiedIndex":12,"createdIndex":12},"prevNode":{"key":"/message","value":"Hello world","modifiedIndex":11,"createdIndex":11}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/abc -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/abc","value":"Hello world","modifiedIndex":13,"createdIndex":13}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/abc -XPUT -d value="Hello world"
{"action":"set","node":{"key":"/abc","value":"Hello world","modifiedIndex":14,"createdIndex":14},"prevNode":{"key":"/abc","value":"Hello world","modifiedIndex":13,"createdIndex":13}}
[root@docker etcd-v2.2.4-linux-amd64]# curl http://127.0.0.1:2379/v2/keys/abc -XPUT -d value="abc"
{"action":"set","node":{"key":"/abc","value":"abc","modifiedIndex":15,"createdIndex":15},"prevNode":{"key":"/abc","value":"Hello world","modifiedIndex":14,"createdIndex":14}}
[root@docker etcd-v2.2.4-linux-amd64]#Attribute | Comment |
|---|---|
action | 事件类型 |
node.key | 关键字，etcd使用了文件系统的结构来管理关键字，都以 / 开头 |
node.value | 值 |
node.modifiedIndex | 在有修改操作时会递增 |
node.createdIndex | 有创建操作时会递增 |
