Test SSH connectivity

Setting up SSH connectivity using username and password or SSH keypairs? Let's start by making you aware of how MyST connects via SSH.

SSH Connectivity between Servers

#	Source	Destination
1	MyST	AdminServer
2	AdminServer	AdminServer
3	AdminServer	Managed Server 1
4	AdminServer	Managed Server 2
5	AdminServer	Managed Server ...

Testing Connectivity

When running SSH commands to test connectivity ensure each command does not prompt and is passwordless.

NOTE: You may need to accept the fingerprint the first time. Once accepted, repeat the tests and ensure this time they are passwordless.

SSH Username and Password

1. Test the connection #1 from MyST

   1. ssh oracle@AdminServer

2. Test connection #2 from AdminServer to AdminServer

   1. ssh oracle@AdminServer

3. Test connection #3 from AdminServer to Managed Server 1

   1. ssh oracle@ManagedServer1

4. Test connection # from AdminServer to Managed Server 2

   1. ssh oracle@ManagedServer2

5. And so on...

SSH Keypair

In this example you will need access to the id_rsa public key.

1. Test the connection #1 from MyST

   1. ssh -i id_rsa oracle@AdminServer

2. Test connection #2 from AdminServer to AdminServer

   1. ssh -i id_rsa oracle@AdminServer

3. Test connection #3 from AdminServer to Managed Server 1

   1. ssh -i id_rsa oracle@ManagedServer1

4. Test connection # from AdminServer to Managed Server 2

   1. ssh -i id_rsa oracle@ManagedServer2

5. And so on...

SUDOERS Disable requiretty

If the logs throw errors about the myst remote agent then make sure to disable requiretty for the SSH user that MyST is connecting with.

See here for requiretty settings: https://userguide.mystsoftware.com/infrastructure/providers/hosts/