Issue with client IP/FQDN

[Skull0ne]

Hi

From the documentation (http://tsung.erlang-projects.org/user_manual/conf-client-server.html#direct-ip), with tsung v1.7, we should be able to use IP address as host but when I try to run this configuration :

  <clients>
      <client host="54.219.186.232" maxusers="10"/>
      <client host="54.213.110.21" maxusers="10"/>
  </clients>

I get this error :

Starting Tsung
Log directory is: .tsung/log/20190501-1808
ERROR: client config: 'host' attribute must be a hostname, not an IP ! (was "54.219.186.232"). You can use -I <> option.
Config Error, aborting ! {error,badhostname}

Also I tried to configure the XML using FQDN :

  <clients>
      <client host="ec2-54-219-186-232.us-west-1.compute.amazonaws.com" maxusers="10"/>
      <client host="ec2-54-213-110-21.us-west-2.compute.amazonaws.com" maxusers="10"/>
  </clients>

And I get this error :

ssh: Could not resolve hostname ec2-54-213-110-21: Temporary failure in name resolution
ssh: Could not resolve hostname ec2-54-219-186-232: Temporary failure in name resolution

Tsung version :

# tsung -v
Tsung version 1.7.0

For the moment I will define them in the /etc/hosts but if you have a solution for that please

Edit : tsung_controller logs are showing something else (maybe FW issue?) :

=INFO REPORT==== 1-May-2019::18:24:09 ===
    ts_config_server:(0:<0.142.0>) Can't start newbeam on host 'ec2-54-213-110-21.us-west-2.compute.amazonaws.com' (reason: timeout) ! Aborting!

=INFO REPORT==== 1-May-2019::18:24:09 ===
    ts_config_server:(0:<0.143.0>) Can't start newbeam on host 'ec2-54-219-186-232.us-west-1.compute.amazonaws.com' (reason: timeout) ! Aborting!

=ERROR REPORT==== 1-May-2019::18:24:09 ===
** Generic server ts_config_server terminating 
** Last message in was {'$gen_cast',
                           {newbeams,
                               ['ec2-54-213-110-21.us-west-2.compute.amazonaws.com',
                                'ec2-54-219-186-232.us-west-1.compute.amazonaws.com']}}
** When Server state == {state,
                         {config,undefined,0,5,none,text,undefined,
                          [{client,
                            "ec2-54-213-110-21.us-west-2.compute.amazonaws.com",
                            1.0,10,[],undefined},
                           {client,
                            "ec2-54-219-186-232.us-west-1.compute.amazonaws.com",
                            1.0,10,[],undefined}],
                          [{server,"google.ca",443,ts_tcp,1}],
                          undefined,[],
                          [{arrivalphase,1,60000,undefined,0.0005,infinity,0,
                            [],false,1}],
                          undefined,false,[],[],ts_http,
                          [{session,1,100,ts_http,"test",true,false,10000,
                            {proto_opts,negotiate,negotiate,"/http-bind/",
                             false,false,false,"/chat","binary",[],10,3,
                             600000,infinity,infinity,32768,32768,32768,32768,
                             [],true,true},
                            undefined,3,undefined,undefined,undefined,
                            undefined,undefined}],
                          [],#Ref<0.4216070227.3373137921.108521>,false,20,3,
                          3,[],0,10000,
                          {proto_opts,negotiate,negotiate,"/http-bind/",
                           false,false,false,"/chat","binary",[],10,3,600000,
                           infinity,infinity,32768,32768,32768,32768,[],true,
                           true},
                          now,none,none,[],undefined,"d",false,1,undefined,20,
                          []},
                         ".tsung/log/20190501-1823",0,0,[],
                         undefined,1,undefined,'ip-172-31-28-139',0,0,
                         undefined,2.0}
** Reason for termination == 
** {{slave_failure,timeout},
    [{ts_config_server,'-check_remotes_ok/1-fun-0-',1,
                       [{file,"src/tsung_controller/ts_config_server.erl"},
                        {line,910}]},
     {lists,foreach,2,[{file,"lists.erl"},{line,1338}]},
     {ts_config_server,handle_cast,2,
                       [{file,"src/tsung_controller/ts_config_server.erl"},
                        {line,407}]},
     {gen_server,try_dispatch,4,[{file,"gen_server.erl"},{line,616}]},
     {gen_server,handle_msg,6,[{file,"gen_server.erl"},{line,686}]},
     {proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]}

=INFO REPORT==== 1-May-2019::18:24:09 ===
              ts_mon:(0:<0.102.0>) Aborting by request !

=INFO REPORT==== 1-May-2019::18:24:09 ===
              ts_mon:(5:<0.102.0>) stopping monitor (abort)

However in my security groups I allow all traffic (tcp/udp/all ports) from my master IP

Thanks

[Skull0ne]

ok so I found the issue for the timeout/resolution using tcpdump : nodes are using the internal DNS of my master instead of the external IP (ip-172-31-28-139.us-west-2.compute.internal).

I put it in the host file and the erl check is now working :

# erl -rsh ssh -sname foo -setcookie mycookie
Erlang/OTP 20 [erts-9.2] [source] [64-bit] [smp:2:2] [ds:2:2:10] [async-threads:10] [kernel-poll:false]

Eshell V9.2  (abort with ^G)
(foo@ip-172-31-28-139)1> slave:start("ec2-54-213-110-21.us-west-2.compute.amazonaws.com",bar,"-setcookie mycookie").
Warning: Permanently added 'ec2-54-213-110-21,54.213.110.21' (ECDSA) to the list of known hosts.
{ok,'bar@ec2-54-213-110-21'}

But could you check for the host as IP please and the FQDN (not working without configuring master host file)?