SSH access

Profiler uses SSH to log into the remote machine and find all running Java applications. Both applications running with and without the profiler agent can be found and profiled. If necessary, the profiler will upload the agent to the remote machine and attach it to your application.

Advantages

1. Ideal for situations when you have SSH access to the host and want to profile Java application which runs without a profiler agent.
2. No need to configure firewalls and expose ports.
3. Ability to profile applications started without the profiler agent using attach.

Prerequisites

1. Remote host must permit SSH port forwarding. Make sure that AllowTcpForwarding yes is set in remote OpenSSH server config, usually at /etc/ssh/sshd_config on Linux.
2. The remote user must have a home directory, and it must be writable. The profiler uploads the necessary files to the user's home directory on the remote host. If the home directory is missing or not writable, remote profiling via SSH will fail.

Authentication methods

For authentication on the remote host you can use plain password, SSH private key or SSH agent authentication methods.