Maven Wagon SCP is not able to establish a connection

Question

I am trying to copy resources to another location. I am using maven wagon-ssh plugin to do this. It works fine locally, I am having issues when using Hudson/Jenkins.

Answer 1

This is what we use to populate known_hosts file on jenkins node:

  
    org.codehaus.groovy.maven
    gmaven-plugin
    
      
          check-known-hosts
          initialize
          
            execute
          
          
            
                import com.jcraft.jsch.*;
                import org.apache.maven.wagon.providers.ssh.knownhost.*;

                def keyString = "" // host key - the line from known_hosts after key type (ssh-rsa)

                FileKnownHostsProvider fkhp = new FileKnownHostsProvider();

                JSch sch = new JSch();
                sch.setKnownHosts(new ByteArrayInputStream(fkhp.getContents().getBytes()));

                def host = project.properties.serverAddress // define someserveraddress.com in  

                if (host != null) {
                  HostKeyRepository hkr = sch.getHostKeyRepository();
                  HostKey[] hk = hkr.getHostKey( host , null );

                  StringWriter stringWriter = new StringWriter();

                  String knownHost = host + " " + "ssh-rsa" + " " + keyString;

                  if ( hk != null )
                  {

                    PrintWriter w = new PrintWriter( stringWriter )
                    def containsKey = false;
                    for ( HostKey key : hk )
                    {
                      def toAdd =  key.getHost() + " " + key.getType() + " " + key.getKey();
                      w.println(toAdd)  ;
                      containsKey = knownHost.equals(toAdd);
                    }
                    if (!containsKey) {
                      println "Adding key for " + host + " to known_hosts"
                      w.println(knownHost);
                      fkhp.storeKnownHosts(stringWriter.toString() );
                    } else {
                      println "Key for " + host + " is already present in known_hosts"
                    }
                  }
                }
            
          
      
    
    
      
        org.apache.maven.wagon
        wagon-ssh-common
        2.10
      
      
        com.jcraft
        jsch
        0.1.54
      
    
  

Seems to work pretty well.