config_example

# applies to all hosts and ensures our sessions stay alive
Host *
  TCPKeepAlive yes
  ServerAliveInterval 30
  ConnectTimeout 10

############################
# other ssh config below
############################

# example configs
Host bastion.client1
  Hostname bastion.client1.host.com.au
  User root

Host web1.client1
  Hostname web1.client1.host.com.au
  User root
  ProxyJump bastion1.client1

############################
# ssm-tool/ssh-over-ssm config below
############################

# applies if our executed command returns an exit code of 0.
# we use grep to check if the host is present in config generated
# by ssm-tool. if true, parse all the config; else continue.
Match exec "grep -qs '^Host.*%n' %d/.ssh/ssmtool-*"
  Include ssmtool-*

# applies to all hosts matching the target hostname. most directives
# are self-explanatory. the identityfile directive is not strict and
# is included for cases where ssh-ssm.sh generates SSH keys.
Match host i-*
  ProxyCommand ssh-ssm.sh %h %r
  IdentityFile ~/.ssh/ssm-ssh-tmp
  StrictHostKeyChecking no
  PasswordAuthentication no
  ChallengeResponseAuthentication no