-- RSSH session credentials (MariaDB). Idempotent ALTERs.
ALTER TABLE remote_access_sessions
    ADD COLUMN IF NOT EXISTS rssh_bastion_host VARCHAR(255) NULL,
    ADD COLUMN IF NOT EXISTS rssh_bastion_port INT UNSIGNED NULL,
    ADD COLUMN IF NOT EXISTS rssh_username VARCHAR(64) NULL,
    ADD COLUMN IF NOT EXISTS rssh_secret VARCHAR(128) NULL,
    ADD COLUMN IF NOT EXISTS rssh_remote_port INT UNSIGNED NULL,
    ADD COLUMN IF NOT EXISTS rssh_local_port INT UNSIGNED NULL DEFAULT 8022;