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Docker开启tcp监听

news 2026/5/11 22:34:57

sudomkdir-p /etc/systemd/system/docker.service.dsudovim/etc/systemd/system/docker.service.d/override.conf

添加下面的内容

[Service]ExecStart=ExecStart=/usr/bin/dockerd -H fd:// -H tcp://0.0.0.0:2375 --containerd=/run/containerd/containerd.sock

创建daemon.json

我也不知道为啥一定要创建这个才行，不创建这个文件它就直接原地爆炸。。。。

sudotee/etc/docker/daemon.json<<'EOF' {} EOF

sudosystemctl daemon-reloadsudosystemctl restartdocker

packagecn.meowrain.aioj.backend.judge.biz;importcom.github.dockerjava.api.DockerClient;importcom.github.dockerjava.api.command.PingCmd;importcom.github.dockerjava.core.DefaultDockerClientConfig;importcom.github.dockerjava.core.DockerClientConfig;importcom.github.dockerjava.core.DockerClientImpl;importcom.github.dockerjava.httpclient5.ApacheDockerHttpClient;importorg.junit.jupiter.api.Test;importorg.springframework.boot.test.context.SpringBootTest;importjava.io.IOException;importjava.time.Duration;importstaticorg.junit.jupiter.api.Assertions.*;/** * Docker 连接测试类 */@SpringBootTestpublicclassDockerConnectionTest{/** * 测试远程 Docker TCP 连接 * 配置在 application.yml 中: judge.sandbox.docker.host */@TestpublicvoidtestDockerConnection(){// 从配置中读取 Docker 主机地址StringdockerHost="tcp://192.168.42.129:2375";// 修改为你的 Linux 服务器 IPSystem.out.println("正在连接 Docker: "+dockerHost);DockerClientConfigconfig=DefaultDockerClientConfig.createDefaultConfigBuilder().withDockerHost(dockerHost).build();ApacheDockerHttpClienthttpClient=newApacheDockerHttpClient.Builder().dockerHost(config.getDockerHost()).sslConfig(config.getSSLConfig()).maxConnections(10).connectionTimeout(Duration.ofSeconds(30)).responseTimeout(Duration.ofSeconds(45)).build();DockerClientdockerClient=DockerClientImpl.getInstance(config,httpClient);try{// 测试连接PingCmdpingCmd=dockerClient.pingCmd();pingCmd.exec();System.out.println("Docker 连接成功!");// 获取 Docker 信息varinfo=dockerClient.infoCmd().exec();System.out.println("Docker 版本: "+info.getServerVersion());System.out.println("操作系统: "+info.getOperatingSystem());System.out.println("容器数量: "+info.getContainers());System.out.println("镜像数量: "+info.getImages());assertNotNull(info);}catch(Exceptione){System.err.println("Docker 连接失败: "+e.getMessage());e.printStackTrace();fail("Docker 连接失败: "+e.getMessage());}finally{try{dockerClient.close();}catch(IOExceptione){System.err.println("关闭 Docker 客户端失败: "+e.getMessage());}}}}