75 lines
2.5 KiB
Bash
75 lines
2.5 KiB
Bash
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#!/bin/bash
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# Check and if needed install/renew certs
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# Note that this script (certbot.sh) is also
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# run weekely from /etc/periodic/weekly/croncert.sh
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#
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# WARNING:
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# Duing the weekly check, if certs are renewed,
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# the mosquitto process is restarted, causing
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# a brief (few second) unavoidable service disruption
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#
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/certbot.sh
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# This script assumes a standard persistent directory and file layout of:
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# /mosquitto/
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# conf/
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# mosquitto.conf - the main configuation file
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# passwd - the password file
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# log/
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#
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# The presense and location of mosquitto.conf isn't optional.
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# (We could allow user definition via environment var, but honestly why bother)
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#
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# The location of the log directory and passwd file can be
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# mapped differently in mosquitto.conf. If so, this script will
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# simply generate warnings, but continue to function.
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#
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if [ ! -d "/mosquitto/log" ]; then
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echo "WARNING: missing /mosquitto/log directory"
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echo "WARNING: ignore if your mosquitto.conf has a non-standard configuration"
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fi
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# create blank passwd if it doesn't exist
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if [ -d "/mosquitto/conf" ]; then
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if [ ! -f "/mosquitto/conf/passwd" ]; then
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echo "Creating blank passwd file at /mosquitto/conf/passwd"
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touch /mosquitto/conf/passwd
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fi
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else
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echo "WARNING: /mosquitto/conf should be mapped to persistent docker volume"
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echo "WARNING: ignore if your mosquitto.conf has a non-standard configuration"
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fi
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# execute any pre-exec scripts, useful for customization of images
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if [ -d "/scripts" ]; then
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echo "Looking for user scripts to execute..."
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for i in /scripts/*sh
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do
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if [ -e "${i}" ]; then
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echo "Found user script - processing $i"
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. "${i}"
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fi
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done
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fi
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echo "Starting mosquitto process (daemon)..."
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if [ -f "/mosquitto/conf/mosquitto.conf" ]; then
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# Note that this method of starting mosquitto results in the process
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# not receiving the SIGTERM signal from Docker on shutdown. This is
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# nessary because mosquitto must be restarted automatically when
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# certificates are renewed. In other words, we need the container to
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# continue running beyond the life of the mosquitto process.
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#
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# A possible enhancement would be to include an "is alive" check
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# for mosquitto to restart it if required or exit the container.
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/usr/sbin/mosquitto -c /mosquitto/conf/mosquitto.conf&
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echo "Going to sleep..."
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# sleep infinity not available, so 9999d should be an acceptable substitute :-)
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sleep 9999d
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else
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echo "ERROR: missing /mosquitto/conf/mosquitto.conf"
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echo "ERROR: check your Docker volume mappings"
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echo "Exiting..."
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fi
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