java實現Linux(centos) 中docker容器下命令交互的代碼（配置向導）
開發需求: 因系統程序部署時,經常是拆分部署(多臺機器) ,手工部署費時費力,且每次都要手工配置系統參數(系統提供配置向導)。
如下圖所示:
1)進行main容器 -> 2)執行系統配置向導 -> 3)選擇服務器模式 -> 4) 選擇web控制臺….然後進行具體的服務器IP設置。
為瞭解放雙手，用java實現瞭Linux(centos) 下docker 應用程序的命令交互。
具體代碼如下:
import java.io.*;
/**
* @author by dujiajun
* @date 2021/4/29.
*/
public class TestMain extends Thread{
//進入docker main
private static String [] cmds = {"docker","exec","-i","main","bash"};
private Process pro;
//初始化各機器IP信息
private String role = "";
private String webIp = "";
private String redisIp = "";
private String beanstalkdIp = "";
private String pgIp = "";
//main應用重啟
public static String [] cmdRestart = {"/bin/sh","-c","docker restart main"};
public void cmdRun(String[] machines) throws Exception {
//執行xx系統配置向導命令並生成進程
//pro = Runtime.getRuntime().exec(cmds);
ProcessBuilder pb = new ProcessBuilder(cmds);
/* pb.inheritIO();
pb.redirectErrorStream(true);*/
pro = pb.start();
System.out.println("執行前pro1:" + pro.isAlive());
//解析machines信息
if (machines.length > 0) {
for (int i = 0; i < machines.length; i++) {
int strEndIndex = machines[i].indexOf(":");
String str = machines[i].substring(0, strEndIndex);
String content = machines[i].substring(strEndIndex + 1);
switch (str.trim()) {
case "role":
role = content;
break; //web服務器IP
case "webIp":
webIp = content;
break; //redis服務器IP
case "redisIp":
redisIp = content;
break; //redis服務器IP
case "beanstalkdIp":
beanstalkdIp = content;
break; //beanstalkd服務器IP
case "pgIp":
pgIp = content;
break; //beanstalkd服務器IP
default:
break;
}
}
}
new Thread() {
public void run() {
try (BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(pro.getOutputStream()))) {
if (role != null && role.equals("web-server")) {//系統web控制臺
System.out.println("*********進入web控制臺配置向導*********");
//系統配置向導命令集-web
String[] strCmdWeb = {
"python /opt/tools/skylar_cli/bin/skylar_cli.pyc",//系統配置向導
"server-type", //服務器模式
"web-server", //管理服務器:提供管理功能及應用功能
"allow-deploy-api-server 0", //設置是否允許部署應用服務器 1允許 0不允許
"cache-info " + redisIp + ":6379", //緩存服務器
"db-info " + pgIp + ":5432", //設置數據庫信息
"queue-info " + beanstalkdIp + ":11300", //設置隊列信息
"report-server-db-info " + pgIp + ":5432", //設置報表數據庫
"sfmg-db-info " + pgIp + ":5432", //設置軟件管傢數據庫
"web-server-port " + webIp + ":8080",//設置管理服務器端口
"commit",//提交
"exit"
};
//查看進程是否還存活
System.out.println("執行前pro2:" + pro.isAlive());
for (String strWeb : strCmdWeb) {
synchronized (bw) {
bw.write(strWeb.trim());
bw.newLine();
System.out.println("step: " + strWeb);
bw.wait(1000);
}
}
//查看進程是否還存活
System.out.println("pro3:" + pro.isAlive());
bw.flush();//緩存提交
System.out.println("緩存提交!");
bw.close();
System.out.println(" bw.close();");
System.out.println("web配置向導設置成功!");
} else if (role != null && role.equals("api-server")) {//系統app應用
//系統配置向導命令集-APP
System.out.println("*********進入APP服務器控制臺配置向導*********");
String[] strCmdApp = {
"python /opt/tools/skylar_cli/bin/skylar_cli.pyc",//系統配置向導
"server-type", //服務器模式
"api-server", //APP服務器
"cache-info " + redisIp + ":6379", //緩存服務器
"db-info " + pgIp + ":5432", //設置數據庫信息
"queue-info " + beanstalkdIp + ":11300", //設置隊列信息
"web-server-info " + webIp + ":8080", //設置管理服務器端口
"commit",//提交配置
"exit"
};
for (String str : strCmdApp) {
synchronized (bw) {
bw.write(str.trim());
bw.newLine();
System.out.println("step: " + str);
bw.wait(1000);
}
}
//查看進程是否還存活
System.out.println("pro3:" + pro.isAlive());
bw.flush();//緩存提交
System.out.println("緩存提交!");
System.out.println("app配置向導設置成功!");
bw.close();
} else if (role != null && role.equals("log-analyze-server")) {//系統日志分析服務器
//系統配置向導命令集-log-analyze-server
System.out.println("*********進入日志分析服務器控制臺配置向導*********");
String[] strCmdLog = {
"python /opt/tools/skylar_cli/bin/skylar_cli.pyc",//天擎配置向導
"server-type", //服務器模式
"log-analyze-server", //管理服務器:提供管理功能及應用功能
"cache-info " + redisIp + ":6379", //緩存服務器
"db-info " + pgIp + ":5432", //設置數據庫信息
"queue-info " + beanstalkdIp + ":11300", //設置隊列信息
"web-server-info " + webIp + ":8080", //設置管理服務器端口
"sfmg-db-info " + pgIp + ":5432", //設置軟件管傢數據庫
"commit",//提交配置
"exit"
};
//順序執行配置向導命令
for (String str : strCmdLog) {
synchronized (bw) {
bw.write(str.trim());
bw.newLine();
System.out.println("step: " + str);
bw.wait(1000);
}
}
//測試進程是否還存活
System.out.println("pro3:" + pro.isAlive());
bw.flush();//緩存提交
System.out.println("緩存提交!");
System.out.println("日志分析服務器配置向導設置成功!");
bw.close();
}
} catch (IOException | InterruptedException e) {
//pro.destroyForcibly();
e.printStackTrace();
//pro.destroy();
System.out.println("e.getMessage(): " + e.getMessage());
} finally {
try {
Process process = Runtime.getRuntime().exec(cmdRestart);//重啟main
System.out.println("process.isAlive:" + process.isAlive());
System.out.println("重啟main成功!");
} catch (IOException e) {
e.printStackTrace();
}
}
}
}.start();
new Thread(){
public void run(){
BufferedReader br = new BufferedReader(new InputStreamReader(pro.getErrorStream()));
String cmdout = "";
try {
cmdout = br.readLine();
while(cmdout!= null&&(!cmdout.equals("exit"))){
System.out.println(cmdout);
}
} catch (IOException e) {
//System.out.println("br:pro.destroy();");
//pro.destroy();
e.printStackTrace();
System.out.println("e.printStackTrace();");
}
try {
System.out.println(" br.close();");
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
pro.waitFor();//進程等待
}
public static void main(String[] args) throws Exception {
TestMain testMain = new TestMain();
/*
//測試用
String[] machines ={
"role:web-server",
"webIp:xx.xx.xx.110",
"redisIp:xx.xx.xx.211",
"beanstalkdIp:xx.xx.xx.211",
"pgIp:xx.xx.xx.212"
};*/
testMain.cmdRun(args);
/* System.exit(0);
System.out.println("System.exit(0);");*/
}
}
特別註意:
private static String [] cmds = {"docker","exec","-i","main","bash"};
一定要使用 docker exec -i main bash ，不要使用 -it ，否則會報錯 cannot enable tty mode on non tty input。
Usage: docker exec [OPTIONS] CONTAINER COMMAND [ARG...] Run a command in a running container -i, --interactive=false Keep STDIN open even if not attached -t, --tty=false Allocate a pseudo-TTY
打成jar包，執行jar包：
終於看到久違的部署成功界面~
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