# Suddenly 502 Bad Gateway

**URL:** <https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543>\
**Category:** Community Support\
**Created:** [July 9, 2018, 9:45am UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543 "2018-07-09T09:45:07Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![osmg](https://avatars.discourse-cdn.com/v4/letter/o/ee59a6/32.png) [@osmg](https://forums.rocket.chat/u/osmg)\
**Post date:** [July 9, 2018, 9:45am UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/1 "2018-07-09T09:45:07Z")

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Hi.

Suddenly, at the end of last week, RocketChat stopped working.  
I have no idea why. The status is active (running).

Jul 09 11:38:10 rocketchat systemd[1]: Started Service for snap application rocketchat-server.rocketchat-server.  
Jul 09 11:38:12 rocketchat rocketchat-server.rocketchat-server[1305]: Mongo is not available, can’t start. Waiting 10 seconds and trying again  
Jul 09 11:38:22 rocketchat rocketchat-server.rocketchat-server[1305]: Checking if oplog has been enabled, and enabling if not  
Jul 09 11:38:22 rocketchat rocketchat-server.rocketchat-server[1305]: MongoDB shell version: 3.2.7  
Jul 09 11:38:22 rocketchat rocketchat-server.rocketchat-server[1305]: connecting to: test  
Jul 09 11:38:31 rocketchat rocketchat-server.rocketchat-server[1305]: Will load cache for users  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: 102 records load from users  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: Will load cache for rocketchat\_room  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: 13 records load from rocketchat\_room  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: Will load cache for rocketchat\_subscription  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: 31 records load from rocketchat\_subscription  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: Will load cache for rocketchat\_settings  
Jul 09 11:38:32 rocketchat rocketchat-server.rocketchat-server[1305]: 706 records load from rocketchat\_settings  
Jul 09 11:38:34 rocketchat rocketchat-server.rocketchat-server[1305]: Updating process.env.MAIL\_URL  
Jul 09 11:38:34 rocketchat rocketchat-server.rocketchat-server[1305]: Starting Email Intercepter…  
Jul 09 11:38:35 rocketchat rocketchat-server.rocketchat-server[1305]: Will load cache for rocketchat\_permissions  
Jul 09 11:38:35 rocketchat rocketchat-server.rocketchat-server[1305]: 80 records load from rocketchat\_permissions  
Jul 09 11:38:35 rocketchat rocketchat-server.rocketchat-server[1305]: Will load cache for rocketchat\_roles  
Jul 09 11:38:35 rocketchat rocketchat-server.rocketchat-server[1305]: 11 records load from rocketchat\_roles  
Jul 09 11:38:37 rocketchat rocketchat-server.rocketchat-server[1305]: LocalStore: store created at  
Jul 09 11:38:37 rocketchat rocketchat-server.rocketchat-server[1305]: LocalStore: store created at  
Jul 09 11:38:37 rocketchat rocketchat-server.rocketchat-server[1305]: LocalStore: store created at  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: Warning: connect.session() MemoryStore is not  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: designed for a production environment, as it will leak  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: memory, and will not scale past a single process.  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: Setting default file store to GridFS  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: LocalStore: store created at  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: LocalStore: store created at  
Jul 09 11:38:39 rocketchat rocketchat-server.rocketchat-server[1305]: LocalStore: store created at  
Jul 09 11:38:45 rocketchat rocketchat-server.rocketchat-server[1305]: Mon, 09 Jul 2018 09:38:45 GMT connect deprecated multipart: use parser (multiparty, busboy, formidable) npm module instead at npm/node\_modules/connect/lib/middleware/bodyParser.js:56:20  
Jul 09 11:38:45 rocketchat rocketchat-server.rocketchat-server[1305]: Mon, 09 Jul 2018 09:38:45 GMT connect deprecated limit: Restrict request size at location of read at npm/node\_modules/connect/lib/middleware/multipart.js:86:15  
Jul 09 11:38:45 rocketchat rocketchat-server.rocketchat-server[1305]: {“line”:“160”,“file”:“rocketchat\_migrations.js”,“message”:“Migrations: Not migrating, already at version 129”,“time”:{"$date":1531129125500},“level”:“info”}  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: Using GridFS for custom sounds storage  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: Using FileSystem for custom emoji storage  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: Exception in callback of async function: Error: EROFS: read-only file system, mkdir ‘/data’  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at Object.fs.mkdirSync (fs.js:885:18)  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at sync (/snap/rocketchat-server/1307/programs/server/npm/node\_modules/mkdirp/index.js:71:13)  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at Function.sync (/snap/rocketchat-server/1307/programs/server/npm/node\_modules/mkdirp/index.js:77:24)  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at new RocketChatFile.FileSystem (/snap/rocketchat-server/1307/programs/server/packages/rocketchat\_file.js:223:12)  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at /snap/rocketchat-server/1307/programs/server/packages/rocketchat\_emoji-custom.js:97:44  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at Function.time (/snap/rocketchat-server/1307/programs/server/profile.js:309:28)  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at /snap/rocketchat-server/1307/programs/server/boot.js:427:13  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at /snap/rocketchat-server/1307/programs/server/boot.js:472:5  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at Function.run (/snap/rocketchat-server/1307/programs/server/profile.js:510:12)  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: at /snap/rocketchat-server/1307/programs/server/boot.js:470:11  
Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: Updating process.env.MAIL\_URL

I tried to revert with snap, but still 502 Bad Gateway.  
Maybe someone can help me.

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**Author:** ![aaron.ogle](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/aaron.ogle/32/15_2.png) [@aaron.ogle](https://forums.rocket.chat/u/aaron.ogle)\
**Post date:** [July 10, 2018, 4:48pm UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/2 "2018-07-10T16:48:53Z")

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> [@osmg](#):
>
> Jul 09 11:38:46 rocketchat rocketchat-server.rocketchat-server[1305]: Exception in callback of async function: Error: EROFS: read-only file system, mkdir ‘/data’

It appears you set your file upload to `/data` which is a directory not writable by snaps.

Snaps are only allowed to write to certain directories.

Directories writable would be something like:

- /var/snap/rocketchat-server/common (this is the default)
- /var/snap/rocketchat-server/current (this folder is versioned. Will be copied every single upgrade.)

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**Author:** ![osmg](https://avatars.discourse-cdn.com/v4/letter/o/ee59a6/32.png) [@osmg](https://forums.rocket.chat/u/osmg)\
**Post date:** [July 11, 2018, 6:59am UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/3 "2018-07-11T06:59:54Z")

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Thanks for looking into it. Now that I’m not able to connect, how can I change the directory back?

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<div class="post-metadata">

**Author:** ![osmg](https://avatars.discourse-cdn.com/v4/letter/o/ee59a6/32.png) [@osmg](https://forums.rocket.chat/u/osmg)\
**Post date:** [July 11, 2018, 1:28pm UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/4 "2018-07-11T13:28:48Z")

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I found a solution by myself. If someone lands here an don’t know what to do:  
db.rocketchat\_settings.update ({\_id: “EmojiUpload\_Storage\_Type”}, {$set: {“value”:“GridFS”}}, false, true);

Again thanks for investigation. Keep up.

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<div class="post-metadata">

**Author:** ![aaron.ogle](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/aaron.ogle/32/15_2.png) [@aaron.ogle](https://forums.rocket.chat/u/aaron.ogle)\
**Post date:** [July 11, 2018, 10:51pm UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/5 "2018-07-11T22:51:28Z")

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Thanks for following up with the solution. Yes it really depended on which was using file upload. Looks like you found it 🙂

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<div class="post-metadata">

**Author:** ![ugintl](https://avatars.discourse-cdn.com/v4/letter/u/ecb155/32.png) [@ugintl](https://forums.rocket.chat/u/ugintl)\
**Post date:** [January 14, 2020, 5:20pm UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/6 "2020-01-14T17:20:12Z")

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@osmg Can you please tell me how to apply this solution?

Note: I did not install rocket chat using snap

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**Author:** ![gstlouis](https://avatars.discourse-cdn.com/v4/letter/g/e36b37/32.png) [@gstlouis](https://forums.rocket.chat/u/gstlouis)\
**Post date:** [June 8, 2021, 12:37pm UTC](https://forums.rocket.chat/t/suddenly-502-bad-gateway/1543/7 "2021-06-08T12:37:21Z")

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you might want to try just rebooting the service  
ex. systemctl restart rocketchat

worked for me, not using snap