docker部署etcd实践过程
<div id="navCategory"><h5 class="catalogue">目录</h5><ul class="first_class_ul"><li><a href="#_label0">第 1 步：创建网络</a></li><li><a href="#_label1">第 2 步：启动 Etcd 服务器实例</a></li><li><a href="#_label2">第 3 步：启动您的 Etcd 客户端实例</a></li><ul class="second_class_ul"><li><a href="#_lab2_2_0">查询</a></li><li><a href="#_lab2_2_1">etcd存取</a></li></ul><li><a href="#_label3">总结</a></li><ul class="second_class_ul"></ul></ul></div><p class="maodian"><a name="_label0"></a></p><h2>第 1 步：创建网络</h2><div class="jb51code"><pre class="brush:bash;"> docker network create app-tier --driver bridge
</pre></div>
<p class="maodian"><a name="_label1"></a></p><h2>第 2 步：启动 Etcd 服务器实例</h2>
<p>使用命令的–network app-tier参数docker run将 Etcd 容器附加到app-tier网络</p>
<div class="jb51code"><pre class="brush:bash;"> docker run -d --name Etcd-server \
--network app-tier \
--publish 2379:2379 \
--publish 2380:2380 \
--env ALLOW_NONE_AUTHENTICATION=yes \
--env ETCD_ADVERTISE_CLIENT_URLS=http://etcd-server:2379 \
bitnami/etcd:latest
</pre></div>
<p class="maodian"><a name="_label2"></a></p><h2>第 3 步：启动您的 Etcd 客户端实例</h2>
<div class="jb51code"><pre class="brush:bash;">docker run -it --rm \
--network app-tier \
--env ALLOW_NONE_AUTHENTICATION=yes \
bitnami/etcd:latest etcdctl --endpoints http://etcd-server:2379 put /message Hello
</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202512/2025120510573410.png" /></p>
<div class="jb51code"><pre class="brush:bash;">docker run -it --rm --network app-tier --env ALLOW_NONE_AUTHENTICATION=yes bitnami/etcd:latest etcdctl --endpoints http://etcd-server:2379 get/message Hello</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202512/2025120510573456.png" /></p>
<p class="maodian"><a name="_lab2_2_0"></a></p><h3>查询</h3>
<div class="jb51code"><pre class="brush:bash;">package main
import (
"context"
"fmt"
"time"
"github.com/coreos/etcd/clientv3"
)
func main() {
/*
DialTimeout time.Duration `json:"dial-timeout"`
Endpoints []string `json:"endpoints"`
*/
cli, err := clientv3.New(clientv3.Config{
Endpoints: []string{"192.168.8.111:2379"},
DialTimeout: 5 * time.Second,
})
if err != nil {
fmt.Println("connect failed, err:", err)
return
}
fmt.Println("连接成功")
defer cli.Close()
//---------------------------------
//设置1秒超时，访问etcd有超时控制
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
cancel()
//取值，设置超时为1秒
ctx, cancel = context.WithTimeout(context.Background(), time.Second)
resp, err := cli.Get(ctx, "/message")
cancel()
if err != nil {
fmt.Println("get failed, err:", err)
return
}
for _, ev := range resp.Kvs {
fmt.Printf("%s : %s\n", ev.Key, ev.Value)
}
}
</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202512/2025120510573476.png" /></p>
<p class="maodian"><a name="_lab2_2_1"></a></p><h3>etcd存取</h3>
<div class="jb51code"><pre class="brush:bash;">package main
import (
"context"
"fmt"
"github.com/coreos/etcd/clientv3"
"time"
)
func main() {
cli, err := clientv3.New(clientv3.Config{
Endpoints: []string{"localhost:2379", "localhost:22379", "localhost:32379"},
DialTimeout: 5 * time.Second,
})
if err != nil {
fmt.Println("connect failed, err:", err)
return
}
fmt.Println("连接成功")
defer cli.Close()
//设置1秒超时，访问etcd有超时控制
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
//操作etcd
_, err = cli.Put(ctx, "/test/conf/", "sample_value")
//操作完毕，取消etcd
cancel()
if err != nil {
fmt.Println("put failed, err:", err)
return
}
//取值，设置超时为1秒
ctx, cancel = context.WithTimeout(context.Background(), time.Second)
resp, err := cli.Get(ctx, "/test/conf/")
cancel()
if err != nil {
fmt.Println("get failed, err:", err)
return
}
for _, ev := range resp.Kvs {
fmt.Printf("%s : %s\n", ev.Key, ev.Value)
}
}
</pre></div>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202512/2025120510573478.png" /></p>
<p>官网文档：</p>
<div class="jb51code"><pre class="brush:bash;">https://etcd.io/docs/v3.5/dev-guide/interacting_v3/
</pre></div>
<p class="maodian"><a name="_label3"></a></p><h2>总结</h2>
<p>以上为个人经验，希望能给大家一个参考，也希望大家多多支持琼殿技术社区。</p>
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