Help Switching to JSON Redis Stack

AnonymousTRIAL

a year ago

Hello there, I'm trying to use a version of Redis on railway with the JSON extension. I came across Brody's answer here and started to follow along:
https://www.answeroverflow.com/m/1154090266093953065. Only issue is that the env variables didn't seem to carry over well. I had to change around some ports to get it to connect again but now it's not reading from the attached volume. All online help talks about changing the docker start command but the Build section is missing from the settings panel. How can I get it to connect to our existing volume?

0 Replies

AnonymousTRIAL

a year ago

684aa05b-448a-4194-93fb-fa5a9fc97cc4


a year ago

first off, can you please confirm if the start command field is missing from the service settings? not that I think you would need it, but that's an issue worth tackling first


AnonymousTRIAL

a year ago

No the start command is visible


AnonymousTRIAL

a year ago

Just build is missing


AnonymousTRIAL

a year ago

So should I set the start command to:
docker run -v /local-data/:/data redis/redis-stack:latest


AnonymousTRIAL

a year ago

And change my mount path to /local-data


a year ago

oh okay sorry I misread your message a tad, build command would not be applicable for docker images so it is not shown in the UI


a year ago

you can not change the docker run command railway uses like that


AnonymousTRIAL

a year ago

Yeah sorry I was just confused because I deploy a docker image for another service on railway and the build section is present for that one


a year ago

you have linked my previous thread that worked for them, I will try my method that I gave in that thread and let you know if it still works


AnonymousTRIAL

a year ago

Great. To be clear my main issue is it connecting to a persistent volume. Pref one that already exists


a year ago

did you have data in it?


AnonymousTRIAL

a year ago

yes


AnonymousTRIAL

a year ago

I can see the data is still there by looking at the data usage metric on the attached volume. I just don't think the redis instance is connected to it


a year ago

how much disk is in use?


AnonymousTRIAL

a year ago

~170mb


a year ago

could just be the base amount of disk usage


a year ago

redis is mostly an in memory store after all


AnonymousTRIAL

a year ago

Pretty sure it's our data. I'm quite positive the default railway redis deploy uses persistence


AnonymousTRIAL

a year ago

A brand new deploy is around 140mb


a year ago

okay sounds good, I will first check the default redis database for data persistence, and then check if my original solution still works when back at my computer


AnonymousTRIAL

a year ago

Yes please do because we low key just fried this database


a year ago

you could always swap the volume itself back over to a regular redis database deployment in the mean time?


AnonymousTRIAL

a year ago

How can I move volumes?


a year ago

unmount and remount


a year ago

if I get this working would you be interested in adding me to your project so I can make sure your redis database is setup correctly as it sounds like you may have made some unsavoury changes to it


AnonymousTRIAL

a year ago

I can confirm by switching the image back to bitnami/redis:latest and then changing the mount point on the volume back to /bitnami I was able to restore my db back to what it was before the attempted change to one with JSON


AnonymousTRIAL

a year ago

But this further proves that the main Redis image uses persistence


a year ago

oh thats awesome, okay delete the redis json service then please as I'll provide instructions from scratch


AnonymousTRIAL

a year ago

Sounds good


a year ago

hey @Marc its not going to be possible to swap the volume from bitnami's redis to redis stack, they use a different file structure.

so instead, would you mind adding me to your project so i can get a new redis stack deployed for you, then i will set you up with a set of commands that will copy the data over!


AnonymousTRIAL

a year ago

Sure how can I go about adding you?


a year ago

my email is brodyover@gmail.com
add me via the members tab of your project


AnonymousTRIAL

a year ago

Done


a year ago

do you want to run the commands, or would you like me to?


AnonymousTRIAL

a year ago

You can give it a shot


a year ago

will do


a year ago

data has been replicated, do i have your permission to switch the linkedIn-api service over to redis stack?


AnonymousTRIAL

a year ago

I can probably take it from here. I don't want to keep taking up your time. You've been super helpful!


a year ago

i would need to stop replication after its been switched over, thats why i asked if it was okay if i could switch it over


AnonymousTRIAL

a year ago

AHH


AnonymousTRIAL

a year ago

then yes


a year ago

okay its redeploying now


a year ago

can i take the Cache service offline? (this wouldnt remove any data)


AnonymousTRIAL

a year ago

yup


a year ago

okay you should be good to go now, let me know if everything works as it should


AnonymousTRIAL

a year ago

Okay I'll test it rn


AnonymousTRIAL

a year ago

Seemingly we're all good! Thank you so much for your help!


a year ago

no problem, happy to help!


a year ago

feel free to remove me from the project!


AnonymousTRIAL

a year ago

Yup just did


Help Switching to JSON Redis Stack - Railway Help Station