Step 1: Open docker remote API port
My file is centos7 system. The file to be modified is / usr / lib / system D / system / docker. service file.
vim /usr/lib/systemd/system/docker.service
The following is my configuration file, which needs to be added in line 13-17: ExecStart=/usr/bin/dockerd followed by - H tcp://0.0.0:2375-H unix://var/run/docker.sock, after ok: wq, save and exit. Note that 0.0.0.0, you read it correctly, so that the configuration is OK, not their own host ip.
[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify # the default is not to use systemd for cgroups because the delegate issues still # exists and systemd currently does not support the cgroup feature set required # for containers run by docker #start add config ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock #end ExecReload=/bin/kill -s HUP $MAINPID # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity # Uncomment TasksMax if your systemd version supports it. # Only systemd 226 and above support this version. #TasksMax=infinity TimeoutStartSec=0 # set delegate yes so that systemd does not reset the cgroups of docker containers Delegate=yes # kill only the docker process, not all processes in the cgroup KillMode=process # restart the docker process if it exits prematurely Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target
Step 2: Restart the docker daemon and restart the docker
The order is as follows:
systemctl daemon-reload
systemctl restart docker
Enter netstat-anp | grep 2375 to show that docker is listening on port 2375
[root@izjmd5lqoeeowpz ~]# netstat -anp|grep 2375 tcp6 0 0 :::2375 :::* LISTEN 2577/dockerd
Enter curl 127.0.0.1:2375/info to display a large amount of information, proving that the port is open to the public.
{"ID":"5ZCY:OFMV:ZO4J:WMQ2:OW57:76PX:VSF2:YX6W:6NKU:3YK6:5WJX:P7BT","Containers":0,"ContainersRunning":0,"ContainersPaused":0,"ContainersStopped":0,"Images":0,"Driver":"overlay2","DriverStatus":[["Backing Filesystem","extfs"],["Supports d_type","true"],["Native Overlay Diff","false"]],"SystemStatus":null,"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","logentries","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"KernelMemory":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"IPv4Forwarding":true,"BridgeNfIptables":true,"BridgeNfIp6tables":true,"Debug":false,"NFd":24,"OomKillDisable":true,"NGoroutines":44,"SystemTime":"2018-10-01T16:31:00.417378358+08:00","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"3.10.0-514.26.2.el7.x86_64","OperatingSystem":"CentOS Linux 7 (Core)","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"AllowNondistributableArtifactsCIDRs":[],"AllowNondistributableArtifactsHostnames":[],"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":[],"Secure":true,"Official":true}},"Mirrors":[]},"NCPU":1,"MemTotal":1928933376,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"izjmd5lqoeeowpz","Labels":[],"ExperimentalBuild":false,"ServerVersion":"18.06.1-ce","ClusterStore":"","ClusterAdvertise":"","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"468a545b9edcd5932818eb9de8e72413e616e86e","Expected":"468a545b9edcd5932818eb9de8e72413e616e86e"},"RuncCommit":{"ID":"69663f0bd4b60df09991c08812a60108003fa340","Expected":"69663f0bd4b60df09991c08812a60108003fa340"},"InitCommit":{"ID":"fec3683","Expected":"fec3683"},"SecurityOptions":["name=seccomp,profile=default"]}
Step 3: Create a springboot project
Step 4: Add a plug-in docker-maven-plugin
<plugin> <groupId>com.spotify</groupId> <artifactId>docker-maven-plugin</artifactId> <version>1.0.0</version> <configuration> <imageName>${docker.image.prefix}-${project.artifactId}</imageName> <!--<dockerDirectory>src/main/docker</dockerDirectory>--> <baseImage>java</baseImage> <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint> <resources> <resource> <targetPath>/</targetPath> <directory>${project.build.directory}</directory> <include>${project.build.finalName}.jar</include> </resource> </resources> </configuration> </plugin>