服务器存储监控，达到预警值，给我发短信_服务器监控短信提醒-优快云博客

本文链接：https://blog.youkuaiyun.com/fangdengfu123/article/details/85251607

List<Server> servers = new ArrayList(){{
   add(new Server(name, "", ""));
    add(new Server(name, "", ""));
    add(new Server(name, "", ""));
    add(new Server(name, "", ""));
}};
Timer timer = new Timer();
// 延迟1秒，10分钟执行一次
timer.schedule(new TimerTask() {
    @Override
    public void run() {
    servers.parallelStream().forEach(s -> {
        int used = getUsedIO(s);
        s.setPercent(used);
        // 发送短信
    });
    }
}, 1000, 1000 * 10 * 60);

public static int getUsedIO(String name, String pwd, String host) {
   JSchUtils jSchUtils = new JSchUtils();
   try {
       jSchUtils.connect(name, pwd, host, 22);
       String cmd = "df -lh | awk '{print $5}'";

       String res = jSchUtils.execCmd(cmd);
       if ("".equals(res)) {
           System.out.println("ssh 命令执行失败： " + cmd);
           return 0;
       }

       String[] percents = res.split("%");
       for (String p : percents) {
           if (p.matches("\\d+")) {
               Integer integer = Integer.valueOf(p);
               return integer;
           }
       }
       return 0;
   } catch (JSchException e) {
       e.printStackTrace();
       return 0;
   } catch (Exception e) {
       e.printStackTrace();
       return 0;
   } finally {
       jSchUtils.close();
   }
}
	
static class Server{
   String name,pwd,host;
   int percent;

   public Server() {
   }

   public Server(String name, String pwd, String host) {

       this.name = name;
       this.pwd = pwd;
       this.host = host;
   }

   @Override
   public String toString() {
       final StringBuilder sb = new StringBuilder("{");
       sb.append("\"name\":\"")
               .append(name).append('\"');
       sb.append(",\"pwd\":\"")
               .append(pwd).append('\"');
       sb.append(",\"host\":\"")
               .append(host).append('\"');
       sb.append(",\"percent\":")
               .append(percent);
       sb.append('}');
       return sb.toString();
   }
}

public class JSchUtils {

    private JSch jsch;
    private Session session;

    /**
     * 连接到指定的IP
     *
     * @throws JSchException
     */
    public void connect(String user, String passwd, String host, int port) throws JSchException {
        jsch = new JSch();// 创建JSch对象
        session = jsch.getSession(user, host, port);// 根据用户名、主机ip、端口号获取一个Session对象
        session.setPassword(passwd);// 设置密码

        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);// 为Session对象设置properties
        session.setTimeout(1500);// 设置超时
        session.connect();// 通过Session建立连接
    }

    /**
     * 关闭连接
     */
    public void close() {
        session.disconnect();
    }

    /**
     * 执行相关的命令
     *
     * @throws JSchException
     */
    public String execCmd(String command) throws JSchException {
        BufferedReader reader = null;
        Channel channel = null;
        String res = "";
        try {
            if (command != null) {
                channel = session.openChannel("exec");
                ((ChannelExec) channel).setCommand(command);
                // ((ChannelExec) channel).setErrStream(System.err);
                channel.connect();

                InputStream in = channel.getInputStream();
                reader = new BufferedReader(new InputStreamReader(in));

                String buf = null;
                while ((buf = reader.readLine()) != null) {
                    res += buf;
                }
            }
            return res;
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSchException e) {
            e.printStackTrace();
        } finally {
            try {
                reader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            channel.disconnect();
        }
        return "";
    }

    public int exec( String cmd )
            throws Exception{
        ChannelExec channelExec = (ChannelExec)session.openChannel( "exec" );
        channelExec.setCommand( cmd );
        channelExec.setInputStream( null );
        channelExec.setErrStream( System.err );
        InputStream in = channelExec.getInputStream();
        channelExec.connect();
        int res = -1;
        StringBuffer buf = new StringBuffer( 1024 );
        byte[] tmp = new byte[ 1024 ];
        while ( true ) {
            while ( in.available() > 0 ) {
                int i = in.read( tmp, 0, 1024 );
                if ( i < 0 ){ break;}
                buf.append( new String( tmp, 0, i ) );
            }
            if ( channelExec.isClosed() ) {
                res = channelExec.getExitStatus();
                System.out.println(String.format( "Exit-status: %d", res ) );
                break;
            }
//            Wand.waitA( 100 );
        }
        System.out.println( buf.toString() );
        channelExec.disconnect();
        return res;
    }

    /**
     * 上传文件
     *
     * @param directory
     *            上传的目录
     * @param uploadFile
     *            要上传的文件
     * @throws JSchException
     * @throws SftpException
     * @throws FileNotFoundException
     */
    public void upload(String directory, String uploadFile) throws JSchException, FileNotFoundException, SftpException {
        ChannelSftp channelSftp = (ChannelSftp) session.openChannel("sftp");
        channelSftp.cd(directory);
        File file = new File(uploadFile);
        channelSftp.put(new FileInputStream(file), file.getName());
        System.out.println("Upload Success!");
    }

    /**
     * 下载文件
     *
     * @param src
     * @param dst
     * @throws JSchException
     * @throws SftpException
     */
    public void download(String src, String dst) throws JSchException, SftpException {
        // src linux服务器文件地址，dst 本地存放地址
        ChannelSftp channelSftp = (ChannelSftp) session.openChannel("sftp");
        channelSftp.connect();
        channelSftp.get(src, dst);
        channelSftp.quit();
    }

    /**
     * 删除文件
     *
     * @param directory
     *            要删除文件所在目录
     * @param deleteFile
     *            要删除的文件
     * @throws SftpException
     * @throws JSchException
     */
    public void delete(String directory, String deleteFile) throws SftpException, JSchException {
        ChannelSftp channelSftp = (ChannelSftp) session.openChannel("sftp");
        channelSftp.cd(directory);
        channelSftp.rm(deleteFile);
    }

    /**
     * 列出目录下的文件
     *
     * @param directory
     *            要列出的目录
     * @return
     * @throws SftpException
     * @throws JSchException
     */
    @SuppressWarnings("rawtypes")
    public Vector listFiles(String directory) throws JSchException, SftpException {
        ChannelSftp channelSftp = (ChannelSftp) session.openChannel("sftp");
        return channelSftp.ls(directory);
    }

    public static void main(String[] args) {
        JSchUtils jSchUtils = new JSchUtils();
        try {

            // 1.连接到指定的服务器
            jSchUtils.connect("root", "root0314", "192.168.3.94", 22);

            // 2.执行相关的命令
//            getContainersPeer();
//            String res = execCmd("/usr/bin/bash /root/fabric-samples/first-network/createTx.sh test");
//            System.out.println(res);
//            exec("cd /root/fabric-samples/first-network/ && /root/bin/configtxgen -profile TwoOrgsChannel -outputCreateChannelTx ./channel-artifacts/test.tx -channelID test");

            jSchUtils.download("/root/fabric-samples/first-network/channel-artifacts/test.tx", "d:/");


        } catch (JSchException e) {
            e.printStackTrace();
        } catch (SftpException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            // 4.关闭连接
            jSchUtils.close();
        }
    }

    public static void getContainersPeer() throws JSchException {
        JSchUtils jSchUtils = new JSchUtils();
        String res = jSchUtils.execCmd("docker ps -a|grep protocol|awk '{print $2}'");
        System.out.println(res);
        String[] split = res.split("dev-");
        float maxVersion = 0f;
        for (String p : split){
            if ("".equals(p)){
                continue;
            }
            String peer = p.substring(0, p.indexOf("-"));
            p = p.substring(p.indexOf("-") + 1);
            String chaincode = p.substring(0, p.indexOf("-"));
            p = p.substring(p.indexOf("-") + 1);
            Float version = Float.valueOf(p.substring(0, p.indexOf("-")));
            if (version > maxVersion){
                maxVersion = version;
            }
            System.out.println("节点名称： " + peer + "； 链码名称： " + chaincode + "； version： " + version);
        }
        for (String p : split){
            if ("".equals(p)){
                continue;
            }
            String peer = p.substring(0, p.indexOf("-"));
            p = p.substring(p.indexOf("-") + 1);
            String chaincode = p.substring(0, p.indexOf("-"));
            p = p.substring(p.indexOf("-") + 1);
            Float version = Float.valueOf(p.substring(0, p.indexOf("-")));
            if (version == maxVersion){
                continue;
            }
            String id = jSchUtils.execCmd("docker ps -a|grep dev-"+peer+"-"+chaincode+"-"+version+"|awk '{print $1}'");
            if (id.length() > 13){
                continue;
            }
            System.out.println("节点id： " + id + "；节点名称： " + peer + "； 链码名称： " + chaincode + "； version： " + version);
            jSchUtils.execCmd("docker rm " + id);
        }
        jSchUtils.close();
    }


}