[英]jsch-->Not able to connect from unix jump server to another unix servers using java
我無法將安全服務器的一個unix服務器連接到另一個unix服務器。通過ssh從putty我可以輕松連接但是當我從jsch connet時我正在下面的錯誤。
成功的putty步驟 - >在putty中連接server1->在成功 - >使用“ssh user @ ip”連接server2
jsch步驟 - >
連接session1 - >一台服務器連接//注釋 - >在服務器1上運行命令以連接其他服務器
錯誤: -由於stdin不是終端,因此不會分配偽終端。 許可被拒絕,請再試一次。 許可被拒絕,請再試一次。 權限被拒絕(公鑰,密碼,鍵盤交互)。 ksh:changeme:未找到退出狀態:127
Jsch示例程序 - >
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
JSch jsch = new JSch();
jsch.setKnownHosts("C://known_hosts.txt");
session=jsch.getSession(user1, server1, 22);
session.setPassword(password1);
session.setConfig(config);
session.connect();
System.out.println("Connected session1");
String command ="ssh"+" "+"user@ip;"+"password" ;
channel=session.openChannel("exec");
((ChannelExec)channel).setCommand(command);
channel.setInputStream(null);
InputStream in=channel.getInputStream();
((ChannelExec)channel).setErrStream(System.err);
channel.connect();
byte[] tmp=new byte[1024];
while(true){
while(in.available()>0){
int i=in.read(tmp, 0, 1024);
if(i<0)break;
System.out.print("server 1"+new String(tmp, 0, i));
}
if(channel.isClosed()){
System.out.println("exit-status: "+channel.getExitStatus());
break;
}
try{Thread.sleep(1000);}catch(Exception ee){}
channel.disconnect();
session.disconnect();
我正在補充說明的重要部分: -
JSch jsch = new JSch();
jsch.setKnownHosts("C:/My Program Files/eclipse/workspace/StatusTracker/known_hosts.txt");
// jsch.setKnownHosts(knownHostLoc);
//Jump server connection session started
jumpServerSession = jsch.getSession(userid, jump server ip/hostname, 22);
jumpServerSession.setPassword(jump server password);
java.util.Properties config = new java.util.Properties();
config.put("StrictHostKeyChecking", "no");
jumpServerSession.setConfig(config);
jumpServerSession.connect();
System.out.println("The session has been established to "+jump server userid+"@"+jump server name);
int assinged_port = jumpServerSession.setPortForwardingL(0, other server ip, 22);
System.out.println("portforwarding: "+
"localhost:"+assinged_port+" -> "+other server ip+":"+22);
//Main server connection session started
targetServerSession = jsch.getSession(fileBO.getServerUserId(), "127.0.0.1", assinged_port);
targetServerSession.setHostKeyAlias(other server ip);
targetServerSession.setPassword(other server password);
java.util.Properties config1 = new java.util.Properties();
config1.put("StrictHostKeyChecking", "no");
targetServerSession.setConfig(config1);
targetServerSession.connect();
channel = targetServerSession.openChannel("sftp");
channel = targetServerSession.openChannel("exec");
//command want to execute on dest server
((ChannelExec)channel).setCommand("pwd");
channel.setInputStream(null);
InputStream in11=channel.getInputStream();
((ChannelExec)channel).setErrStream(System.err);
channel.connect();
byte[] tmp1=new byte[1024];
while(true){
while(in11.available()>0){
int i1=in11.read(tmp1, 0, 1024);
if(i1<0)break;
System.out.print(new String(tmp1, 0, i1));
}
if(channel.isClosed()){
System.out.println("exit-status: "+channel.getExitStatus());
break;
}
try{Thread.sleep(1000);}catch(Exception ee){}
}
} catch (final JSchException e) {
LOGGER.error(e.getMessage());
}
您可以在連接之前使用channel.setPty(true),而不是進行端口轉發。 在此之后,您可以使用outPutStream提供密碼。
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