etcd

README

ETCD

1.安装

• 普通安装
  • 源码下载解压(https://github.com/etcd-io/etcd/releases)
  • 将可执行文件复制进$GOPATH/bin(mv etcd* /$GOPATH/bin)
  • 配置环境变量并生效(设置使用api3的命令 echo 'export ETCDCTL_API=3' >> /etc/profile)(source /etc/profile)
  • 启动(nohup ./etcd &)(若想通过机器IP访问则需要在启动时指定IP nohup ./etcd --listen-client-urls http://0.0.0.0:2379 --advertise-client-urls http://0.0.0.0:2379 --listen-peer-urls http://0.0.0.0:2380 > /tmp/etcd.log 2>&1 &)
• docker安装
  • 查找镜像(docker search etcd)
  • 拉取镜像(此处选择v3镜像 docker pull xieyanze/etcd3)
  • 运行节点0(docker run -d -p 2380:2380 -p 2379:2379 --name etcd xieyanze/etcd3 -name etcd -advertise-client-urls http://172.16.16.114:2379 -listen-client-urls http://0.0.0.0:2379 -initial-advertise-peer-urls http://172.16.16.114:2380 -listen-peer-urls http://0.0.0.0:2380 -initial-cluster-token etcd-cluster-1 -initial-cluster "etcd=http://172.16.16.114:2380" -initial-cluster-state new 当启动报错时,重启docker即可 /etc/init.d/docker restart)
  • 验证(curl -L http://172.16.16.114:2479/v2/members 或 etcdctl --endpoints="http://172.16.16.114:2379" get foo)

2.API

• 键值相关
  • Put 存
  • Get 取
  • Delete 删
  • Compact 压缩
  • Do 执行(Put/Get/Delete也基于Do)
  • Txn 事务,仅支持If/Then/Else/Commit
• Watch
  • Watch 监听key的变化
  • Close 关闭
• 租约相关
  • Grant 分配
  • Revoke 释放
  • TimeToLive 获取剩余TTL时间
  • Leases 获取所有租约
  • KeepAlive 续约
  • KeepAliveOnce 仅续约一次
  • Close 关闭
• 集群相关
  • MemberList 获取集群所有成员
  • MemberAdd 添加成员
  • MemberRemove 移除成员
  • MemberUpdate 更新成员
• 锁
  • Lock 获取锁
  • Unlock 释放锁

Documentation

Index

• func EtcdInit()
• func Monitor(ser *etcd.Service)
• func NewClient(endpoints []string) (*etcd.Client, error)
• func NewService(endpoints []string, ttl int64) (*etcd.Service, error)
• func RegisterStart()

Functions

func EtcdInit

func EtcdInit()

func Monitor

func Monitor(ser *etcd.Service)

func NewClient

func NewClient(endpoints []string) (*etcd.Client, error)

func NewService

func NewService(endpoints []string, ttl int64) (*etcd.Service, error)

func RegisterStart

func RegisterStart()