feat: Add KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME

The variable `KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME` allows for
alternative key names to be used instead of the hardcoded `id_rsa.`

Note: It defaults to `id_rsa` to prevent any breaking changes.

README.md

@@ -56,6 +56,8 @@ Use the examples in examples/\* for inspiration.
 
 `KAYOBE_AUTOMATION_SSH_PRIVATE_KEY`: Private key used to login to kayobe managed hosts
 
+`KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME` Name of private key used to login to kayobe managed hosts. Defaults to id_rsa.
+
 `KAYOBE_AUTOMATION_LOG_LEVEL`: Verbosity of logging. Choose one of: `debug`, `info`, `warn`, `error`
 
 `KAYOBE_VAULT_PASSWORD`: Kayobe vault password.

functions

@@ -551,10 +551,10 @@ function setup_ssh_agent {
 function inject_ssh_keys {
     # These are read when generating kolla passwords
     if [ ! -z ${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY:+x} ]; then
-        echo "${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY}" >~/.ssh/id_rsa
-        chmod 600 ~/.ssh/id_rsa
-        ssh-keygen -y -f ~/.ssh/id_rsa >~/.ssh/id_rsa.pub
-        chmod 600 ~/.ssh/id_rsa.pub
+        echo "${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY}" >"~/.ssh/${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME:-id_rsa}"
+        chmod 600 "~/.ssh/${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME:-id_rsa}"
+        ssh-keygen -y -f "~/.ssh/${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME:-id_rsa}" >"~/.ssh/${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME:-id_rsa}.pub"
+        chmod 600 "~/.ssh/${KAYOBE_AUTOMATION_SSH_PRIVATE_KEY_NAME:-id_rsa}.pub"
     fi
 }