Created
March 29, 2023 05:54
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OpenWrt DDNS service watchdog. Auto restart service when it exited unexpectedly.
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| #!/bin/sh | |
| # Run this script from cron every 10 minutes: | |
| # echo '*/10 * * * * /path/to/ddns_watchdog.sh' >> /etc/crontabs/root | |
| . /lib/functions.sh | |
| handle_ddns_service() { | |
| local cfg="$1" | |
| local enabled | |
| config_get enabled "${cfg}" enabled | |
| [ $enabled != "1" ] && return 0; | |
| pid=`cat /tmp/run/ddns/$cfg.pid` | |
| [ -n "$(ps | awk '{print $1}' | grep $pid)" ] && return 0; | |
| logger -t "ddns_monitor" "service $cfg not running. launching..." | |
| /bin/sh /usr/lib/ddns/dynamic_dns_updater.sh -v 0 -S $cfg -- start & | |
| } | |
| config_load ddns | |
| config_foreach handle_ddns_service service |
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