Question

我已经在Tomcat容器中向Jelastic部署了一个简单的Clojure Web应用程序。 Clojure应用程序在端口7001上启动REPL。我已设置并运行Jelastic SSH Gate。我通过在本地计算机上的终端（其中XXX是数字）中运行该命令，通过端口转发将SSH连入tomcat节点：

ssh -L 7001:localhost:7001 XXXXX-XXXX@gate.paas.massivegrid.com -p 3022 -N -vv

然后在我运行的本地计算机上

lein repl :connect 7001

在本地计算机上，我看到：

Connecting to nREPL at 127.0.0.1:7001
ConnectException Connection refused (Connection refused)

我在tomcat节点终端窗口上看到

debug1: Connection to port 7001 forwarding to localhost port 7001 requested.
debug2: fd 10 setting TCP_NODELAY
debug1: channel 2: new [direct-tcpip]
channel 2: open failed: connect failed: Connection refused
debug2: channel 2: zombie
debug2: channel 2: garbage collecting
debug1: channel 2: free: direct-tcpip: listening port 7001 for localhost port 7001, connect from 127.0.0.1 port 57311 to 127.0.0.1 port 7001, nchannels 3

我在做什么错？这与Jelastic管理港口的方式有关吗？

====================

编辑：实际上端口转发工作正常

问题出在应用程序上。

作为参考，这是检查端口转发在Jelastic上是否起作用的方法。 Jelastic节点未安装netcat，因此您不能仅运行netcat -l 7001。但是，它确实安装了perl，因此您可以编写一个perl脚本来创建侦听器套接字，然后在Jelastic服务器上运行该脚本：（编辑2019_04_06：不用下面的perl脚本，只需使用python -m SimpleHTTPServer 7001-查看注释）

use IO::Socket::INET;

# auto-flush on socket
$| = 1;

# creating a listening socket
my $socket = new IO::Socket::INET (
    LocalHost => '0.0.0.0',
    LocalPort => '7001',
    Proto => 'tcp',
    Listen => 5,
    Reuse => 1
);
die "cannot create socket $!\n" unless $socket;
print "server waiting for client connection on port 7777\n";

while(1)
{
    # waiting for a new client connection
    my $client_socket = $socket->accept();

    # get information about a newly connected client
    my $client_address = $client_socket->peerhost();
    my $client_port = $client_socket->peerport();
    print "connection from $client_address:$client_port\n";

    # read up to 1024 characters from the connected client
    my $data = "";
    $client_socket->recv($data, 1024);
    print "received data: $data\n";

    # write response data to the connected client
    $data = "ok";
    $client_socket->send($data);

    # notify client that response has been sent
    shutdown($client_socket, 1);
}

$socket->close();

（here中的脚本）。使用nano将上述内容写入Jelastic节点上的脚本listener.pl中，然后在该节点上运行perl listener.pl。

在您的本地计算机上运行

ssh -L 7001:localhost:7001 XXXXX-XXXX@gate.paas.massivegrid.com -p 3022

然后在本地计算机上尝试curl localhost:7001，在Jelastic节点的终端中，您应该看到类似

received data: GET / HTTP/1.1
Host: localhost:7777
User-Agent: curl/7.54.0
Accept: */*

如何使端口转发与Jelastic一起工作以连接到正在运行的Clojure Web应用程序的REPL？

编辑：实际上端口转发工作正常

0 个答案: