springboot远程执行服务器指令
作者：爱刘温柔的小猪
这篇文章主要介绍了springboot远程执行服务器指令,本例是java远程连接到服务器,去抓取查询kubesphere中的etcd日志,并返回,需要的朋友可以参考下
本例是java远程连接到服务器，去抓取查询kubesphere中的etcd日志，并返回。步骤拆分：
- 连接到服务器
- 执行指令获取pod信息：kubectl get po -n kubesphere-system
- 将pod信息分割，只返回pod名称
- 根据pod名称，执行指令获取pod日志：kubectl logs -n kubesphere-system "+podName + "
- –tail=500
1、在工程中引入下方依赖
<dependency> <groupId>ch.ethz.ganymed</groupId> <artifactId>ganymed-ssh2</artifactId> <version>build210</version> </dependency>
2、编写连接命令工具类KubeSphereSSHUtils
import ch.ethz.ssh2.Connection;
import ch.ethz.ssh2.Session;
import ch.ethz.ssh2.StreamGobbler;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
@Component
public class KubeSphereSSHUtils {
private String hostname;
private String username;
private String password;
public void setHostname(String hostname) {
this.hostname = hostname;
}
public void setUsername(String username) {
this.username = username;
}
public void setPassword(String password) {
this.password = password;
}
private static Logger log = LoggerFactory.getLogger(KubeSphereSSHUtils.class);
public Connection sshConnection() {
Connection sshConn = null;
try {
sshConn = new Connection(hostname);
sshConn.connect();
boolean isAuthenticate = sshConn.authenticateWithPassword(username, password);
if(isAuthenticate == false) {
throw new IOException("连接到指定环境失败");
}
} catch (IOException e) {
e.printStackTrace();
}
return sshConn;
}
//获取发布的日志的容器名
public List<String> getReleasePod(String nameSpaceName, String containName) {
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String str = " kubectl get po -n "+nameSpaceName;
log.info("执行指令："+str);
sess.execCommand(str);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> names = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(StringUtils.isEmpty(line)) {
break;
}
if(line.startsWith(containName)){
names.add(line.split("\\s+")[0]);
}
}
return names;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
conn.close();
sess.close();
reader.close();
inputStreamReader.close();
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
//获取pod内部日志
public List<String> getReleaseLogs(String nameSpaceName,String podName, String deploymentName){
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String execCommand = "kubectl logs -n "+nameSpaceName+" "+podName + " --tail=500";
// String execCommand = "kubectl logs -n "+nameSpaceName+" "+podName + " --tailssss=500";
log.info("执行指令："+execCommand);
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
//获取pod内部日志
public List<String> getKubeletLogs(){
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String execCommand = "systemctl status kubelet";
log.info("执行指令："+execCommand);
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
public List<String> getNodesStatus() {
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String execCommand = "kubectl get nodes";
log.info("执行指令："+execCommand);
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
public List<String> getNoReadyNodeMessage() {
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
// String execCommand = "kubectl get nodes | grep NotReady | awk '{print$1}'";
String execCommand = "kubectl get nodes | grep Ready | awk '{print$1}'";
log.info("执行指令："+execCommand);
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
public List<String> restartKubelet() {
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String execCommand = "systemctl restart kubelet.service";
log.info("执行指令："+execCommand);
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
public List<String> getNodeIPMessage() {
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String execCommand = "hostname -i";
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
//重启node机器，慎用！！！！！！
public List<String> rebootNode() {
Connection conn = this.sshConnection();
Session sess = null;
InputStream is = null;
InputStreamReader inputStreamReader = null;
BufferedReader reader = null;
try {
sess = conn.openSession();
String execCommand = "systemctl reboot";
sess.execCommand(execCommand);
is = new StreamGobbler(sess.getStdout());
inputStreamReader = new InputStreamReader(is);
reader = new BufferedReader(inputStreamReader);
boolean flg = true;
List<String> logs = new ArrayList<String>();
while(flg) {
String line = reader.readLine();
if(line == null) {
break;
}
logs.add(line);
}
return logs;
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
reader.close();
inputStreamReader.close();
is.close();
conn.close();
sess.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
}3、编写配置连接类
@Component
public class DeployUtil {
private KubeSphereSSHUtils sshUtilsDev;
private KubeSphereSSHUtils sshUtilsRelease;
private KubeSphereSSHUtils sshUtilsProd;
private KubeSphereSSHUtils sshUtilsDev_node1;
private KubeSphereSSHUtils sshUtilsDev_node2;
private KubeSphereSSHUtils sshUtilsDev_node3;
private KubeSphereSSHUtils sshUtilsDev_node4;
private KubeSphereSSHUtils sshUtilsRelease_node1;
private KubeSphereSSHUtils sshUtilsRelease_node2;
private KubeSphereSSHUtils sshUtilsRelease_node3;
private KubeSphereSSHUtils sshUtilsRelease_node4;
private KubeSphereSSHUtils sshUtilsRelease_node5;
private KubeSphereSSHUtils sshUtilsRelease_node6;
@Autowired
K8sEnvConfigBean k8sEnvConfigBean;
@PostConstruct
public void init() {
this.createK8sSSHUtils("dev");
this.createK8sSSHUtils("release");
this.createK8sSSHUtils("prod");
this.createK8sSSHNodeUtils_Dev("dev-node1");
this.createK8sSSHNodeUtils_Dev("dev-node2");
this.createK8sSSHNodeUtils_Dev("dev-node3");
this.createK8sSSHNodeUtils_Dev("dev-node4");
this.createK8sSSHNodeUtils_Release("release-node1");
this.createK8sSSHNodeUtils_Release("release-node2");
this.createK8sSSHNodeUtils_Release("release-node3");
this.createK8sSSHNodeUtils_Release("release-node4");
this.createK8sSSHNodeUtils_Release("release-node5");
this.createK8sSSHNodeUtils_Release("release-node6");
}
//创建三套环境主节点的连接
public void createK8sSSHUtils(String env) {
if(env.equals("dev")) {
sshUtilsDev = new KubeSphereSSHUtils();
sshUtilsDev.setPassword(k8sEnvConfigBean.getDevPassword());
sshUtilsDev.setUsername(k8sEnvConfigBean.getDevUsername());
sshUtilsDev.setHostname(k8sEnvConfigBean.getDevHost());
}else if(env.equals("release")) {
sshUtilsRelease = new KubeSphereSSHUtils();
sshUtilsRelease.setPassword(k8sEnvConfigBean.getReleasePassword());
sshUtilsRelease.setUsername(k8sEnvConfigBean.getReleaseUsername());
sshUtilsRelease.setHostname(k8sEnvConfigBean.getReleaseHost());
}else if(env.equals("prod")) {
sshUtilsProd = new KubeSphereSSHUtils();
sshUtilsProd.setPassword(k8sEnvConfigBean.getProdPassword());
sshUtilsProd.setUsername(k8sEnvConfigBean.getProdUsername());
sshUtilsProd.setHostname(k8sEnvConfigBean.getProdHost());
}
}
//创建dev环境子节点的连接
public void createK8sSSHNodeUtils_Dev(String env) {
switch (env) {
case "dev-node1":
sshUtilsDev_node1 = new KubeSphereSSHUtils();
sshUtilsDev_node1.setPassword(k8sEnvConfigBean.getDev_node1_password());
sshUtilsDev_node1.setUsername(k8sEnvConfigBean.getDev_node1_username());
sshUtilsDev_node1.setHostname(k8sEnvConfigBean.getDev_node1_host());
break;
case "dev-node2":
sshUtilsDev_node2 = new KubeSphereSSHUtils();
sshUtilsDev_node2.setPassword(k8sEnvConfigBean.getDev_node2_password());
sshUtilsDev_node2.setUsername(k8sEnvConfigBean.getDev_node2_username());
sshUtilsDev_node2.setHostname(k8sEnvConfigBean.getDev_node2_host());
break;
case "dev-node3":
sshUtilsDev_node3 = new KubeSphereSSHUtils();
sshUtilsDev_node3.setPassword(k8sEnvConfigBean.getDev_node3_password());
sshUtilsDev_node3.setUsername(k8sEnvConfigBean.getDev_node3_username());
sshUtilsDev_node3.setHostname(k8sEnvConfigBean.getDev_node3_host());
break;
case "dev-node4":
sshUtilsDev_node4 = new KubeSphereSSHUtils();
sshUtilsDev_node4.setPassword(k8sEnvConfigBean.getDev_node4_password());
sshUtilsDev_node4.setUsername(k8sEnvConfigBean.getDev_node4_username());
sshUtilsDev_node4.setHostname(k8sEnvConfigBean.getDev_node4_host());
}
}
//创建release环境子节点连接
public void createK8sSSHNodeUtils_Release(String env) {
switch (env) {
case "release-node1":
sshUtilsRelease_node1 = new KubeSphereSSHUtils();
sshUtilsRelease_node1.setPassword(k8sEnvConfigBean.getRelease_node1_password());
sshUtilsRelease_node1.setUsername(k8sEnvConfigBean.getRelease_node1_username());
sshUtilsRelease_node1.setHostname(k8sEnvConfigBean.getRelease_node1_host());
break;
case "release-node2":
sshUtilsRelease_node2 = new KubeSphereSSHUtils();
sshUtilsRelease_node2.setPassword(k8sEnvConfigBean.getRelease_node2_password());
sshUtilsRelease_node2.setUsername(k8sEnvConfigBean.getRelease_node2_username());
sshUtilsRelease_node2.setHostname(k8sEnvConfigBean.getRelease_node2_host());
break;
case "release-node3":
sshUtilsRelease_node3 = new KubeSphereSSHUtils();
sshUtilsRelease_node3.setPassword(k8sEnvConfigBean.getRelease_node3_password());
sshUtilsRelease_node3.setUsername(k8sEnvConfigBean.getRelease_node3_username());
sshUtilsRelease_node3.setHostname(k8sEnvConfigBean.getRelease_node3_host());
break;
case "release-node4":
sshUtilsRelease_node4 = new KubeSphereSSHUtils();
sshUtilsRelease_node4.setPassword(k8sEnvConfigBean.getRelease_node4_password());
sshUtilsRelease_node4.setUsername(k8sEnvConfigBean.getRelease_node4_username());
sshUtilsRelease_node4.setHostname(k8sEnvConfigBean.getRelease_node4_host());
break;
case "release-node5":
sshUtilsRelease_node5 = new KubeSphereSSHUtils();
sshUtilsRelease_node5.setPassword(k8sEnvConfigBean.getRelease_node5_password());
sshUtilsRelease_node5.setUsername(k8sEnvConfigBean.getRelease_node5_username());
sshUtilsRelease_node5.setHostname(k8sEnvConfigBean.getRelease_node5_host());
case "release-node6":
sshUtilsRelease_node6 = new KubeSphereSSHUtils();
sshUtilsRelease_node6.setPassword(k8sEnvConfigBean.getRelease_node6_password());
sshUtilsRelease_node6.setUsername(k8sEnvConfigBean.getRelease_node6_username());
sshUtilsRelease_node6.setHostname(k8sEnvConfigBean.getRelease_node6_host());
}
}
//获取相应环境的某台机器的连接
public KubeSphereSSHUtils getK8sSSHUtils(String env) {
KubeSphereSSHUtils result = null;
if(env.equals("dev")) {
if (this.sshUtilsDev == null) {
this.createK8sSSHUtils(env);
}
result = sshUtilsDev;
}else if(env.equals("release")) {
if (this.sshUtilsRelease == null) {
this.createK8sSSHUtils(env);
}
result = sshUtilsRelease;
}else if(env.equals("prod")) {
if (this.sshUtilsProd == null) {
this.createK8sSSHUtils(env);
}
result = sshUtilsProd;
}
//新增操作dev节点的逻辑
else if(env.equals("dev-node1")) {
if (this.sshUtilsDev_node1 == null) {
this.createK8sSSHNodeUtils_Dev(env);
}
result = sshUtilsDev_node1;
}else if(env.equals("dev-node2")) {
if (this.sshUtilsDev_node2 == null) {
this.createK8sSSHNodeUtils_Dev(env);
}
result = sshUtilsDev_node2;
}else if(env.equals("dev-node3")) {
if (this.sshUtilsDev_node3 == null) {
this.createK8sSSHNodeUtils_Dev(env);
}
result = sshUtilsDev_node3;
}else if(env.equals("dev-node4")) {
if (this.sshUtilsDev_node4 == null) {
this.createK8sSSHNodeUtils_Dev(env);
}
result = sshUtilsDev_node4;
}
//新增操作release节点的逻辑
else if(env.equals("release-node1")) {
if (this.sshUtilsRelease_node1 == null) {
this.createK8sSSHNodeUtils_Release(env);
}
result = sshUtilsRelease_node1;
}else if(env.equals("release-node2")) {
if (this.sshUtilsRelease_node2 == null) {
this.createK8sSSHNodeUtils_Release(env);
}
result = sshUtilsRelease_node2;
}else if(env.equals("release-node3")) {
if (this.sshUtilsRelease_node3 == null) {
this.createK8sSSHNodeUtils_Release(env);
}
result = sshUtilsRelease_node3;
}else if(env.equals("release-node4")) {
if (this.sshUtilsRelease_node4 == null) {
this.createK8sSSHNodeUtils_Release(env);
}
result = sshUtilsRelease_node4;
}else if(env.equals("release-node5")) {
if (this.sshUtilsRelease_node5 == null) {
this.createK8sSSHNodeUtils_Release(env);
}
result = sshUtilsRelease_node5;
}else if(env.equals("release-node6")) {
if (this.sshUtilsRelease_node6 == null) {
this.createK8sSSHNodeUtils_Release(env);
}
result = sshUtilsRelease_node6;
}
return result;
}
//寻找环境下的某一个子节点物理机，便于重启该机器
public String getNodeEnvType(String nodeName,String env) {
String k8sEnv = null;
if(Objects.equals(env,"dev")){ //dev环境机器匹配，不匹配主节点
switch (nodeName) {
case "node1":
k8sEnv = "dev-node1";
break;
case "node2":
k8sEnv = "dev-node2";
break;
case "node3":
k8sEnv = "dev-node3";
break;
case "node4":
k8sEnv = "dev-node4";
break;
}
} else if(Objects.equals(env,"release")) { //release环境机器匹配，不匹配主节点
switch (nodeName) {
case "node1":
k8sEnv = "release-node1";
break;
case "node2":
k8sEnv = "release-node2";
break;
case "node3":
k8sEnv = "release-node3";
break;
case "node4":
k8sEnv = "release-node4";
break;
case "node5":
k8sEnv = "release-node5";
break;
case "node6":
k8sEnv = "release-node6";
break;
}
}
//prod环境机器暂时不开启自动重启功能
return k8sEnv;
}
}4、调用时的代码如下：
KubeSphereSSHUtils sshUtils = deployUtils.getK8sSSHUtils(env);//连接到指令环境 List<String> podNames = sshUtils.getReleasePod(KUBESPHERE_NAMESPACE, KUBESPHERE_ETCD_CONTAINNAME); //获取pod名称 List<String> logs = sshUtils.getReleaseLogs(KUBESPHERE_NAMESPACE, podName, KUBESPHERE_ETCD_CONTAINNAME);//获取日志
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