We should be able to redirect master and slave logs to systemd journal on the systems where it's available.
Default configuration of google logging
Add either log rotation or capped-size logging (for tasks)
This should also include individual task stdout/stderr, syslog messages being logged to the systemd journal (although those are more bits of this as an epic). Right now for long-running tasks, the stdout and stderr just grow forever. The systemd journal makes it so the stdout/stderr can be capped size, and administrative policies can be set per app if desired.