Restore backup from manual installation to snap installation

Community Support
1

Hi there,

I’m on the following situation : I would like to migrate my server (same Rocket Chat version) from a manual installation :

Rocket.Chat Version: 3.5.2
NodeJS Version: 12.18.3 - x64
MongoDB Version: 4.0.19
MongoDB Engine: mmapv1
Platform: linux
Process Port: 3000
Site URL: https://rocket.domain.com:64000/

To a SNAP installation (new url rocketchat .domain instead of rocket .domain):

Rocket.Chat Version: 3.5.2
NodeJS Version: 12.16.1 - x64
MongoDB Version: 3.6.14
MongoDB Engine: wiredTiger
Platform: linux
Process Port: 3000
Site URL: https://rocketchat.domain.com:64000/

I tried to play with the defirent “knows” issues seen on documentation/forum/issues like:

  • Changing db from rocketchat to parties (and vice versa)
oldserver$ mongodump --db=rocketchat --out=/tmp/
oldserver$ mv /tmp/rocketchat /tmp/dump/rocketchat
oldserver$ tar cvzf rocketchat_dump.tar.gz /tmp/dump
oldserver$ mv /tmp/dump/rocketchat /tmp/dump/parties
oldserver$ tar cvzf parties_dump.tar.gz /tmp/dump

newserver$ sudo snap run rocketchat-server.restoredb /var/snap/rocketchat-server/common/backup/parties_dump.tar.gz
newserver$ sudo snap run rocketchat-server.restoredb /var/snap/rocketchat-server/common/backup/rocketchat_dump.tar.gz
  • Editing the SITE URL within mongo / snap
$ mongo
$ use rocketchat # use parties
$ db.rocketchat_settings.update({"_id" : "Site_Url"},{$set:{value:"https://rocketchat.domain.com:64000"}})

sudo snap set rocketchat-server caddy-url=https://rocketchat.domain.com

I’m ending up always with either errors (related to localstorage from the oldserver directory location) :
LocalStore: cannot create store at /opt/Rocket.Chat/upload (EROFS: read-only file system, mkdir '/opt/Rocket.Chat')
or a bad gateway 502 or a clean/empty installation (the wizard is showing)

Could you tell me what’s the good process (if there is one) to re-import a DB from a manual install and make sure to make it work with a snap ?

So far, I’ve manager to “only” make my wildcard certificate to work, using the following caddyfile :

https://rocketchat.domain.com:64000
  tls domain.com.crt domain.com.key
  proxy / localhost:3000 {
    websocket
    transparent
  }
2

As suggested by @sing.li on the #ubuntu-snap channel, I tried to downgrade my manual installation to mongo 3.6 (successfully) in order to avoid having different DB version.

So far, it doesn’t change anything, except that I realised that the Bad Gateway error I got, was only when rocketchat was starting (and not yet available).

So back the issue, with probably one less steps.

I guess this part of the log may indicate that the install dir is still my old (manual) directory “/opt/Rocket.chat” instead of pointing to the snap one (/var/snap/rocketchat-server/common):

LocalStore: cannot create store at /opt/Rocket.Chat/upload (EROFS: read-only file system, mkdir ‘/opt/Rocket.Chat’)

How may I change it ?

3

I’ve managed to get trhoug the setup wizzard by doing (in order):

  1. Install rocket chat via snap
  2. finish the setup wizzard
  3. Restore the backup (into the db parties)

My current issue is for the Upload files, from the log during an avatar upload :

rocketchat-server.rocketchat-server[3356]: ufs: cannot write file "DwCDfqTi4w9w9YwLx" (ENOENT: no such file or directory, open '/opt/Rocket.Chat/upload/DwCDfqTi4w9w9YwLx') [Error: ENOENT: no such file or directory, open '/opt/Rocket.Chat/upload/DwCDfqTi4w9w9YwLx'] {
rocketchat-server.rocketchat-server[3356]:   errno: -2,
rocketchat-server.rocketchat-server[3356]:   code: 'ENOENT',
rocketchat-server.rocketchat-server[3356]:   syscall: 'open',
rocketchat-server.rocketchat-server[3356]:   path: '/opt/Rocket.Chat/upload/DwCDfqTi4w9w9YwLx'
rocketchat-server.rocketchat-server[3356]: }
rocketchat-server.rocketchat-server[3356]: Exception in setTimeout callback: TypeError: Cannot read property 'etag' of undefined
rocketchat-server.rocketchat-server[3356]:     at app/lib/server/functions/setUserAvatar.js:66:50
rocketchat-server.rocketchat-server[3356]:     at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1234:12)
rocketchat-server.rocketchat-server[3356]:     at packages/meteor.js:550:25
rocketchat-server.rocketchat-server[3356]:     at runWithEnvironment (packages/meteor.js:1286:24)

I tried to create the folder /opt/Rocket.Chat/upload/ but still getting the same error.

4

I finally succeed to get rid of most of my issues by putting the “upload files” on the same location as the previous server. It’s quite dirty, but it works