Railway•3mo ago

Can't connect to redis internal but can over ipv4 addr

I am trying to use the railway internal network for a Redis store in a NodeJS server but I can only connect using the external ipv4 address. Here is the JS connection logic:

const redisClient = createClient({ url: process.env.REDIS_URL });
await redisClient.connect();

const redisClient = createClient({ url: process.env.REDIS_URL });
await redisClient.connect();

REDIS_URL is a service variable defined in the NodeJS service. ipv4 address: redis://default:(password here)@viaduct.proxy.rlwy.net:27261 ipv6 address: redis://default:(password here)@redis.railway.internal:6379 I have also tried redis://default:(password here)@redis:6379 as this is valid schema. Error Log:

node:internal/process/promises:289

triggerUncaughtException(err, true /* fromPromise */);

^

Error: getaddrinfo ENOTFOUND redis

at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:118:26)

Emitted 'error' event on Commander instance at:

at RedisSocket.<anonymous> (/usr/src/app/node_modules/@redis/client/dist/lib/client/index.js:412:14)

at RedisSocket.emit (node:events:519:28)

at RedisSocket._RedisSocket_connect (/usr/src/app/node_modules/@redis/client/dist/lib/client/socket.js:166:18)

at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

at async Commander.connect (/usr/src/app/node_modules/@redis/client/dist/lib/client/index.js:185:9)

at async /usr/src/app/index.js:38:3 {

errno: -3008,

code: 'ENOTFOUND',

syscall: 'getaddrinfo',

hostname: 'redis'

}

Node.js v21.7.1

node:internal/process/promises:289

triggerUncaughtException(err, true /* fromPromise */);

^

Error: getaddrinfo ENOTFOUND redis

at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:118:26)

Emitted 'error' event on Commander instance at:

at RedisSocket.<anonymous> (/usr/src/app/node_modules/@redis/client/dist/lib/client/index.js:412:14)

at RedisSocket.emit (node:events:519:28)

at RedisSocket._RedisSocket_connect (/usr/src/app/node_modules/@redis/client/dist/lib/client/socket.js:166:18)

at process.processTicksAndRejections (node:internal/process/task_queues:95:5)

at async Commander.connect (/usr/src/app/node_modules/@redis/client/dist/lib/client/index.js:185:9)

at async /usr/src/app/index.js:38:3 {

errno: -3008,

code: 'ENOTFOUND',

syscall: 'getaddrinfo',

hostname: 'redis'

}

Node.js v21.7.1

Solution:

https://docs.railway.app/guides/private-networking#initialization-time

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5 Replies

Percy•3mo ago

Project ID: b88cd4f4-3e33-4c82-8bb1-90877719ae87

Nafi•3mo ago

b88cd4f4-3e33-4c82-8bb1-90877719ae87 @Brody any ideas?

Brody•3mo ago

do you have a 3 second sleep?

Nafi•3mo ago

I do not could you elaborate I only connect to redis via a specific endpoint, its not instant so the delayed internal start isnt the issue here (probably)

Solution

Brody•3mo ago

https://docs.railway.app/guides/private-networking#initialization-time

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Can't connect to redis internal but can over ipv4 addr