Ideas
We can remotely connect to the host within the container and then operate the host.
Use sshpass (mine is CentOS 7.9 environment)
1.Install sshpass
apt-get update //更新一下
apt-get -y install sshpass //安装
2. Connect to the host and execute the command
sshpass -p '宿主机用户密码' ssh -o StrictHostKeyChecking=no -p 22 用户名@宿主机ip 命令
列如：
注意：这是在容器中运行的，查出了宿主机的ip配置信息。
sshpass -p 'abc@1234' ssh -o StrictHostKeyChecking=no -p 22 [email protected] ifconfig
3. Connect and execute the host script
vim hello.sh //在宿主机建一个脚本文件
脚本内容
#!/bin/bash
echo "hello woshikunkun"
注意：这是在容器中运行的，执行了宿主机的脚本。
sshpass -p 'abc@1234' ssh -o StrictHostKeyChecking=no -p 22 [email protected] sh hello.sh
4. Of course, it can also be automated. For example, the java project is deployed in a docker container, and then the java project executes the host's script or host's command at a certain moment.
Note: You must first install the sshpass command. Dockerfile files can be automatically installed when you deploy the container.
Docker deploys springboot project
Runtime rt = Runtime.getRuntime();
//执行 ifconfig -a 命令，查询宿主机的ip配置
String[] shell = {
"/bin/bash", "-c", "sshpass -p 'abc@1234' ssh -o StrictHostKeyChecking=no -p 22 [email protected] ifconfig -a "};
//执行hello.sh 脚本
String[] shell = {
"/bin/bash", "-c", "sshpass -p 'abc@1234' ssh -o StrictHostKeyChecking=no -p 22 [email protected] sh hello.sh "};
Process exec = Runtime.getRuntime().exec(shell);
BufferedReader in = null;
try {
in = new BufferedReader(new InputStreamReader(p.getInputStream()));
String str = null;
String[] strArray = null;
//逐一对每行内容进行操作
while ((str = in.readLine()) != null) {
System.out.println(str);
}
} catch (Exception e) {
System.out.println(e);
} finally {
in.close();
}