pingud98 · August 2, 2024 22:29
diff --git a/gistfile1.txt b/gistfile1.txt
 The situation: I have built some cosmic ray detectors that store the data in influxdb on device, using a Raspberry Pi with SD Card. The SD cards died en route as a result of power cycling. So the expedition crew changed them periodically. Also we got some data in real time via Starlink, but only for a couple of hours a day. 
 The result: I have my online influxdb, which has all events received via starlink. I have three SD cards with varying degrees of 'offline' data, in the format of raw influxdb files (shards, not portable etc.)
 I was getting failures with the following errors in the influxd status:
 août 03 00:15:53 beast influxd[4142]: ts=2024-08-02T22:15:53.720580Z lvl=info msg="Failed to open>
 This is due to incorrect permissions to /var/lib/influx, the fix is below.
 The solution:
 1) Copy the files off the SD cards. This requires a linux instance, mounting the cards and then modifying the permissions (sudo chmod -R 777 /var/lib/influx/ and then sudo chown user:user /var/lib/influx/) and copying the files to a safe place (sudo cp -r /var/lib/influx/ ~/Documents/influx_backup_number_etc)
 2) install influxd on the host machine (sudo apt-get install influxdb)
 3) copy the files back to the /var/lib/influx directory
 4) Reset the permissions as here https://docs.influxdata.com/influxdb/v1/introduction/install/
 (sudo chmod -R 755 /var/lib/influxdb/ and sudo chmod -R 700 /var/lib/influxdb/wal/ and sudo chown -R influxdb:influxdb /var/lib/influxdb/)
 5) Restart the local influxd (sudo systemctl restart influxd)
 6) Create a portable backup in a new safe place (influxd backup -portable ~/Documents/influx_2_portable_bak)
 7) next step - follow the instructions here to merge everything into a master dataset: https://community.home-assistant.io/t/influxdb-and-merging-multiple-backups/515602

 Useful sources:
 https://community.influxdata.com/t/recovering-data-after-a-disk-failure/3590
 https://docs.influxdata.com/influxdb/v1/tools/influx_inspect/
	The situation: I have built some cosmic ray detectors that store the data in influxdb on device, using a Raspberry Pi with SD Card. The SD cards died en route as a result of power cycling. So the expedition crew changed them periodically. Also we got some data in real time via Starlink, but only for a couple of hours a day.
	The result: I have my online influxdb, which has all events received via starlink. I have three SD cards with varying degrees of 'offline' data, in the format of raw influxdb files (shards, not portable etc.)
	I was getting failures with the following errors in the influxd status:
	août 03 00:15:53 beast influxd[4142]: ts=2024-08-02T22:15:53.720580Z lvl=info msg="Failed to open>
	This is due to incorrect permissions to /var/lib/influx, the fix is below.
	The solution:
	1) Copy the files off the SD cards. This requires a linux instance, mounting the cards and then modifying the permissions (sudo chmod -R 777 /var/lib/influx/ and then sudo chown user:user /var/lib/influx/) and copying the files to a safe place (sudo cp -r /var/lib/influx/ ~/Documents/influx_backup_number_etc)
	2) install influxd on the host machine (sudo apt-get install influxdb)
	3) copy the files back to the /var/lib/influx directory
	4) Reset the permissions as here https://docs.influxdata.com/influxdb/v1/introduction/install/
	(sudo chmod -R 755 /var/lib/influxdb/ and sudo chmod -R 700 /var/lib/influxdb/wal/ and sudo chown -R influxdb:influxdb /var/lib/influxdb/)
	5) Restart the local influxd (sudo systemctl restart influxd)
	6) Create a portable backup in a new safe place (influxd backup -portable ~/Documents/influx_2_portable_bak)
	7) next step - follow the instructions here to merge everything into a master dataset: https://community.home-assistant.io/t/influxdb-and-merging-multiple-backups/515602

	Useful sources:
	https://community.influxdata.com/t/recovering-data-after-a-disk-failure/3590
	https://docs.influxdata.com/influxdb/v1/tools/influx_inspect/