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Updated Repair MongoDB (markdown)

Lauri Ojansivu 2022-01-26 02:12:25 +02:00
parent 4276750994
commit cda803dea7
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70
Repair-MongoDB.md

@ -1,6 +1,6 @@
Some customer of [WeKan Commercial Support](https://wekan.team/commercial-support/) ordered repair of WeKan MongoDB database at Univention appliance. Docker containers were all the time crashing and restarting. Here are commands that were used while repairing.
Some customer of [WeKan Commercial Support](https://wekan.team/commercial-support/) ordered restore and repair of WeKan MongoDB database at UCS appliance. Docker containers were all the time crashing and restarting. Here are commands that were used while repairing.
1. SSH to Univention as root.
1. SSH to UCS appliance as root:
```
ssh root@192.168.0.100
```
@ -14,7 +14,7 @@ fdisk -l /dev/sdc
fdisk -l /dev/sdd
```
2. If external USB drive has NTFS file format, install NTFS support to Linux:
2. If external USB drive has NTFS file format, and mount complains about not having NTFS support, install NTFS support to Linux:
```
apt install ntfs-3g
```
@ -38,44 +38,71 @@ root@ucs:/mnt/wekan/data/db# locate WiredTiger.wt
/mnt/wekan/data/db/WiredTiger.wt
/var/lib/univention-appcenter/apps/wekan/data/db/WiredTiger.wt
```
6. Find mongod command:
6. Change to newly installed MongoDB data directory:
```
cd /var/lib/univention-appcenter/apps/wekan/data/db/
```
7. Look at directory files owner permissions:
```
ls -lah
```
There could be like this:
```
-rw-r--r-- 1 tss tss 1004 Jan 25 13:09 WiredTiger.turtle
-rw-r--r-- 1 tss tss 392K Jan 25 13:09 WiredTiger.wt
```
8. Move that probably empty newly installed MongoDB data elsewhere:
```
mkdir /root/new-empty-wekan-data
mv * /root/new-empty-wekan-data
```
9. Copy MongoDB raw database files from USB harddrive to docker container directory:
```
root@ucs-bdc:/var/lib/univention-appcenter/apps/wekan/data/db# cp -pR /mnt/wekan/data/db/* .
```
10. Like looked at step 7, change file owner permissions to be correct, and change directory
```
chown -R tss:tss *
cd /root
```
11. Find mongod command:
```
locate /usr/bin/mongod
```
7. Repair Docker WeKan with version of Docker MongoDB that WeKan uses, change mongod path to below. Repairing logged to textfile.
12. Repair Docker WeKan with version of Docker MongoDB that WeKan uses, change mongod path to below. Repairing logged to textfile.
```
root@ucs:~# /var/lib/docker/overlay2/7b58483a16a2f67ee50486c00ec669940f7a95d460ee8188966fee0096e81fa2/diff/usr/bin/mongod --dbpath "/var/lib/univention-appcenter/apps/wekan/data/db" --repair >> repairlog.txt
```
8. Look what containers are running:
13. Look what containers are running:
```
docker ps
```
9. Look what containers are not running:
14. Look what containers are not running:
```
docker ps -a
```
10. Start MongoDB first:
15. Start MongoDB first:
```
docker start wekan-db
```
11. Look what happends at MongoDB container:
16. Look what happends at MongoDB container:
```
docker logs wekan-db
```
12. Start WeKan next.
17. Start WeKan next.
```
docker start wekan-app
```
11. Look what happends at MongoDB container.
18. Look what happends at MongoDB container.
```
docker logs wekan-app
```
12. Check are both wekan-db and wekan-app containers running, and not restarting:
19. Check are both wekan-db and wekan-app containers running, and not restarting:
```
docker ps
```
13. Try to login to WeKan with webbrowser.
14. Backup WeKan database now after repair:
20. Try to login to WeKan with webbrowser.
21. Backup WeKan database now after repair:
```
docker exec -it wekan-db bash
cd /data
@ -87,24 +114,21 @@ zip -r wekan-backup-2022-01-01.zip dump
```
Now backup is at wekan-backup-2022-01-01.zip file.
15. Transfer file to your local computer with scp:
22. At your local computer terminal (not at UCS server), transfer file to your local computer with scp:
```
scp root@192.168.0.100:/root/wekan-backup-2022-01-01.zip .
```
16. Copy backup to external USB harddrive:
23. Copy backup to external USB harddrive, change YEAR-MONTH-DATE-TIME-HERE to current date and time:
```
cp /root/wekan-backup-2022-01-01.zip /mnt/
cp /root/wekan-backup-YEAR-MONTH-DATE-TIME-HERE.zip /mnt/
```
17. Look what drives are mounted:
24. Look what drives are mounted:
```
df -h
```
18. Sync and save unwritted data to disk, and unmount external USB harddrive safely:
25. Sync and save unwritted data to disk, and unmount external USB harddrive safely:
```
sync
umount /mnt
```
19. Remove external USB harddisk from server.
26. Remove external USB harddisk from server.