relayd
is an open source load balancer which is able to handle protocol layers 3, 4 and 7. It’s the standard “in-house” load-balancing solution of OpenBSD. It can be setup as a forward, reverse or TCP port redirector and/or SSL/TLS ‘terminator’.
Basic commands
Check relayd configuration:
# relayd -n -f /etc/relayd.conf
Show detailed status of hosts and tables:
# relayctl show host
Show detailed status of redirections including the current and average access statistics:
# relayctl show redirects
Show detailed status of relays including the current and average access statistics:
# relayctl show relays
Dump the complete list of running relay sessions:
# relayctl show sessions
Display a list of all relays, redirections, routers, tables, and hosts:
# relayctl show summary
Schedule an immediate check of all hosts:
# relayctl poll
Reloading configuration
You can reload the current configuration file with the command:
# relayctl reload
Beware, this command will flush the current ‘state’ and provoke a short downtime. Also it seems that if you have SSL ressources, reload
make relayd
crash. So instead of using this command you should make a CARP failover “switch” and restart the process like this :
# pkill relayd && sleep 1 && relayd -f /etc/relayd.conf && relayctl poll