tonydm
commented
4 years ago Hi Leondro,
I believe to use the "external_master" option you need to have an established SSH connection outside of the Probe's execution and establishing ssh connections. Try setting up your /etc/ssh/config file like below. SSH into your router. In a separate terminal verify multiplexing is working. Make sure your probe specifies the external_master => 1 and that you define the ControlPath (ctl_path). Note: I'm not sure you need the master_opts. Then watch the smokeping log and router's ssh connections.
Disclaimer: I run smokeping in a Docker container so I am working on some issues with ssh in the container and no master control mode being established when I ssh into a host. But the steps I've referenced, according to the documentation, should work if I understand correctly.
Host 10.10.0.1
ControlMaster auto
ControlPath /tmp/ssh-%r@%h:%p
ControlPersist yesssh -O check smokeping@10.10.0.1# Define some output files for stdout and stderr so we can monitor
open my $stderr_fh, '>>', '/tmp/openssh.err' || warn;
open my $stdout_fh, '>>', '/tmp/openssh.std' || warn;
my $ssh = Net::OpenSSH->new(
$source,
$login ? ( user => $login ) : (),
$password ? ( password => $password ) : (),
port => $port,
timeout => 60,
strict_mode => 0,
kill_ssh_on_timeout => 1,
ctl_dir => "/tmp/.libnet-openssh-perl",
ctl_path => "/tmp/ssh-%r@%h:%p",
external_master => 1,
# master_opts => ["-oStrictHostKeyChecking=no", "-oControlMaster=auto", "-oControlPath=/tmp/ssh-%r@%h:%p", "-vvv"],
master_stderr_fh => $stderr_fh,
master_stdout_fh => $stdout_fh,
ssh_cmd => $ssh_cmd
);
leostereo
Hello dear Tony. I would like to modify your module so we can reuse ssh connections (master mode). After reading Net::OpenSSH documentation tryed to tweat OpenSSH objects parameters but can not get them reuse connections. This is what I have so far:
Im playing with ctl_path , master_opts and external_master values , but it is not working Please take a look to following perlmonk node as well: https://www.perlmonks.org/?node_id=11122369 I will try to make more tests today and let you know if have some improvement. Leandro.