They're alive!!! But now the questions about recovering from power outages come. Two of these nodes are also going to host Pi-hole servers. They're on an UPS but I'd prefer not to have to field questions on how to get the internet back after a power outage that last more than an hour if I happen to be put of town. Is there a way to have the BMC remember the state and have them power back up when power is restored?Does this require the RTC battery or something?

Not for now. I don't know about the new firmware that the Team is developing, but the Community Edition of the firmware is going to gain this ability in some near future

Does BMC have Cron or will I need to do it on another machine that does come back after an outage?

If you go to

/etc/init.d/S99hello.sh

, you could add

tpi

commands there I guess, although maybe with some delay to let the

bmc

process start

That might work. The script to start them would be pretty small.

I mean you edit the script I mentioned and add the commands there

This is my basic init.d script that turns on Node 4 only, as well as syncing the clock. #! /bin/sh echoLog(){ tee -a /tmp/startupLog.txt} diagnosticsPrint(){echo "[Attempt $webAttempts, $(date +%H:%M:%S)] "} startupRoutine(){ echo "########## Executing custom items ##########" | echoLog echo "==> Setting date from hw clock:" | echoLog hwclock -s && date | echoLog echo "==> Attempting to start Node 4" | echoLog webAttempts=1 until $(curl --output /dev/null --silent --head --fail http://localhost); do webAttempts=$(( $webAttempts + 1 )) echo "$(diagnosticsPrint) Waiting for webserver start. " | echoLog sleep 1 done echo "$(diagnosticsPrint) Webserver online - starting nodes" | echoLog curl -s "http://localhost/api/bmc?opt=set&type=power&node4=1" | echoLog } case "$1" in start) startupRoutine ;; stop) ;; restart) startupRoutine ;; status) # code to check status of app comes here # example: status program_name ;; *) echo "Usage: $0 {start|stop|status|restart}" esac echo "" exit 0