docker命令就不解释了，从官网上copy下来的，都是一些内部的配置信息
需要挂载和端口暴露的docker基础
单机单实例
安装命令
docker run \
-d \
--name etcd \
-p 2379:2379 \
-p 2380:2380 \
--volume=/var/etcd:/etcd-data \
quay.io/coreos/etcd:v3.3.13 \
/usr/local/bin/etcd \
--name my-etcd-1 \
--data-dir /etcd-data \
--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 \
--initial-advertise-peer-urls http://0.0.0.0:2380 \
--initial-cluster my-etcd-1=http://0.0.0.0:2380 \
--initial-cluster-token my-etcd-token \
--initial-cluster-state new \
--auto-compaction-retention 1 \
--auto-compaction-mode periodic
etcdctl 工具 先进入容器
~ # etcdctl set name cfd
cfd
~ # etcdctl get name
cfd
~ # etcdctl --endpoints http://localhost:2379 set name cfd
cfd
~ # etcdctl --endpoints http://localhost:2379 get name
cfd
单机多实例
默认使用：
- 2379 - 服务接口
- 2380 - 通信监听端口
多实例配置端口如下，按照上面的 docker 安装命令修改 将192.168.159.128配置为本机ip，0.0.0.0不变 如果出错了需要重新配置，需要停止容器并删除，再把挂载的目录也删掉，运行命令
| 12379 | 12380 |
|---|---|
| 22379 | 22380 |
| 32379 | 32380 |
docker run \
-d \
--name my-etcd-2 \
-p 12379:12379 \
-p 12380:12380 \
--volume=/home/cfd/env/etcd/2:/etcd-data \
quay.io/coreos/etcd:v3.3.13 \
/usr/local/bin/etcd \
--name my-etcd-2 \
--data-dir /etcd-data \
--listen-client-urls http://0.0.0.0:12379 \
--advertise-client-urls http://192.168.159.128:12379 \
--listen-peer-urls http://0.0.0.0:12380 \
--initial-advertise-peer-urls http://192.168.159.128:12380 \
--initial-cluster 'my-etcd-2=http://192.168.159.128:12380,my-etcd-3=http://192.168.159.128:22380,my-etcd-4=http://192.168.159.128:32380' \
--initial-cluster-token my-etcd-token \
--initial-cluster-state new \
--auto-compaction-retention 1 \
--auto-compaction-mode periodic
docker run \
-d \
--name my-etcd-3 \
-p 22379:22379 \
-p 22380:22380 \
--volume=/home/cfd/env/etcd/3:/etcd-data \
quay.io/coreos/etcd:v3.3.13 \
/usr/local/bin/etcd \
--name my-etcd-3 \
--data-dir /etcd-data \
--listen-client-urls http://0.0.0.0:22379 \
--advertise-client-urls http://192.168.159.128:22379 \
--listen-peer-urls http://0.0.0.0:22380 \
--initial-advertise-peer-urls http://192.168.159.128:22380 \
--initial-cluster 'my-etcd-2=http://192.168.159.128:12380,my-etcd-3=http://192.168.159.128:22380,my-etcd-4=http://192.168.159.128:32380' \
--initial-cluster-token my-etcd-token \
--initial-cluster-state new \
--auto-compaction-retention 1 \
--auto-compaction-mode periodic
docker run \
-d \
--name my-etcd-4 \
-p 32379:32379 \
-p 32380:32380 \
--volume=/home/cfd/env/etcd/4:/etcd-data \
quay.io/coreos/etcd:v3.3.13 \
/usr/local/bin/etcd \
--name my-etcd-4 \
--data-dir /etcd-data \
--listen-client-urls http://0.0.0.0:32379 \
--advertise-client-urls http://192.168.159.128:32379 \
--listen-peer-urls http://0.0.0.0:32380 \
--initial-advertise-peer-urls http://192.168.159.128:32380 \
--initial-cluster 'my-etcd-2=http://192.168.159.128:12380,my-etcd-3=http://192.168.159.128:22380,my-etcd-4=http://192.168.159.128:32380' \
--initial-cluster-token my-etcd-token \
--initial-cluster-state new \
--auto-compaction-retention 1 \
--auto-compaction-mode periodic
etcd关键参数说明
进入容器后查看连接列表
# docker exec -it my-etcd-2 /bin/sh
# etcdctl --endpoints=192.168.159.128:12379 member list
parse 192.168.159.128:12379: first path segment in URL cannot contain colon
# etcdctl --endpoints=http://192.168.159.128:12379 member list
731ef0275af38ce7: name=my-etcd-3 peerURLs=http://192.168.159.128:22380 clientURLs=http://192.168.159.128:22379 isLeader=false
7f396b01e384c118: name=my-etcd-4 peerURLs=http://192.168.159.128:32380 clientURLs=http://192.168.159.128:32379 isLeader=false
fccae47c7ce36cc6: name=my-etcd-2 peerURLs=http://192.168.159.128:12380 clientURLs=http://192.168.159.128:12379 isLeader=true
# 三号节点是leader
简单使用etcdctl
[root@iZ2vcd6bealyr76cgiidyvZ var]# docker exec -it my-etcd-2 /bin/sh
/ # etcdctl --endpoints=http://172.27.3.40:12379 set name cfd
cfd
/ # etcdctl --endpoints=http://172.27.3.40:12379 get name
cfd
