iotstack_reload_influxdb

#!/bin/bash

# IOTstack lives here
IOTSTACK="$HOME/IOTstack"

# the backup directory is
BACKUPDIR="$IOTSTACK/backups"

# ensure the backup directory exists
[ -d "$BACKUPDIR" ] || mkdir "$BACKUPDIR"

# backup paths
INFLUXBACKUPOLD="$BACKUPDIR/influxdb/db_old"
INFLUXBACKUPNEW="$BACKUPDIR/influxdb/db"

# the influx data directory is
INFLUXDATA="$IOTSTACK/volumes/influxdb/data"

# move into the correct directory
pushd "$IOTSTACK"

# is influx running?
if [ $(docker ps | grep -c influxdb) -gt 0 ]; then

	# yes! remember, stuff in here needs root permissions

	# prepare the environment
	echo "Moving old influxdb backups if they exist"
	[ -d "$INFLUXBACKUPOLD" ] || sudo mkdir "$INFLUXBACKUPOLD"
	pushd "$INFLUXBACKUPOLD"; sudo rm *; popd
	pushd "$INFLUXBACKUPNEW"; sudo mv * "$INFLUXBACKUPOLD"; popd

	# execute the backup command
	echo "backing up Influx database"
	docker exec influxdb influxd backup -portable /var/lib/influxdb/backup
	echo "influxdb backup complete"
	
	echo "deactivating influxdb"
	docker-compose stop influxdb
	
	echo "removing the running database"
	sudo rm -rf "$INFLUXDATA"
	
	echo "restarting influxdb"
	docker-compose up -d
	
	echo "reloading the influx databases"
	docker exec influxdb influxd restore -portable /var/lib/influxdb/backup
	
	echo "The InfluxDB databases should be good to go"
	
else

	echo influxdb must be running when this command is started
	
fi

# pop out of IOTstack
popd

echo "script completed"