8cef47d732d4acff: name=etcd-node1 peerURLs=http://172.62.0.10:2380 clientURLs=http://172.62.0.10:2379 isLeader=false c93af917b643516f: name=etcd-node3 peerURLs=http://172.62.0.12:2380 clientURLs=http://172.62.0.12:2379 isLeader=false cdee7114ad135065: name=etcd-node2 peerURLs=http:/...
{ID:3fbbbed942c51f7b RaftAttributes:{PeerURLs:[https://192.168.26.100:2380] IsLearner:false}...
核心算法示例代码如下所示: go func(c *Client) Election(ctx context.Context, id string) bool { c.Leader = c.leader() err := c.election.Campaign(ctx, id) if err != nil { log.WithError(err).WithField("id", id).Error("Campaign error") return false } c.IsLeader = true return tru...
c.IsLeader =true returntrue } 核心是利用`Campaign`API[2], 这里面有etcd的事务,源码值得一看, 对应到原始的etcdctl操作:etcdctl put ‐‐lease=41ce93a9f806a53b /merc/leader/41ce93a9f806a53b 127.0.0.1:8686注意:key= /merc/leader/41ce93a9f806a53b, value= 127.0.0.1:8686, 租约是41ce93a9f806a53b...
fd422379fda50e48: name=infra3 peerURLs=http://127.0.0.1:32380 clientURLs=http://127.0.0.1:32379 isLeader=false 存储数据 export ETCDCTL_API=3 //就在在当前终端的情况下,默认就是这个版本 $ ./bin/etcdctl put foo "Hello World!" ...
Leader执行ReadIndex大致的流程如下: 1、记录当前的commit index,称为ReadIndex; 所有的请求都会交给leader,如果follower收到读请求,会将请求forward给leader 2、向 Follower 发起一次心跳,如果大多数节点回复了,那就能确定现在仍然是Leader; 确认当前leader的状态,避免当前节点状态切换,数据不能及时被同步更新 ...
692a38059558446:name=etcd03 peerURLs=http://192.168.122.53:2380clientURLs=http://192.168.122.53:2379isLeader=true 1b1ca7d3774cbbb9:name=etcd02 peerURLs=http://192.168.122.52:2380clientURLs=http://192.168.122.52:2379isLeader=false cb75efb850ec8c2a:name=etcd01 peerURLs=http://192.168.122.51...
bfc28be8765b503e: name=etcd03 peerURLs=http://192.168.200.26:2380 clientURLs=http://192.168.200.26:2379,http://192.168.200.26:4001 isLeader=false 可以看到集群的节点情况,并能看出哪个是leader节点 我们在etcd01上设置一个key/value root@etcd1:~# etcdctl set api_server http://192.168.5.44:8080...
| ENDPOINT | ID | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS | +---+---+---+---+---+---+---+---+---+---+ | 0.0.0.0:2380 | 8e9e05c52164694d | 3.5.7 | 2.1 GB | false | false | 9 | 33 | 33 | |...
[root@k8s-02 sysctl.d]# docker info Client: Debug Mode: false Server: Containers: 0 Running: 0 Paused: 0 Stopped: 0 Images: 0 Server Version: 19.03.10 Storage Driver: overlay2 Backing Filesystem: xfs Supports d_type: true Native Overlay Diff: true Logging Driver: json-file Cgroup Drive...