Localhost 5432 is not working

Original message was deleted

kapa.ai•1/5/25, 11:00 AM

Hi @Xuban. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

kapa.ai•1/5/25, 11:00 AM

----------------------
Based on the knowledge sources provided, it appears that you're encountering an issue with connecting to a PostgreSQL database on localhost:5432. This is a common problem when working with Wasp and its database functionality. Here's what you need to know:

The URL http://localhost:5432/ is not the correct way to connect to a PostgreSQL database. PostgreSQL uses a different protocol, not HTTP.
The error you're seeing is likely related to a database connection issue. This could be because:
- The database is not running
- There's a conflict with the port 5432
- There might be an IPv4 vs IPv6 connectivity issue

To resolve this, try the following steps:

Make sure you have a PostgreSQL database running on port 5432. You can start a managed dev database using the command:

   wasp start db

   wasp start db

Wasp Documentation provides more information on this.

If you're still having issues, try changing
```
localhost
```
```
localhost
```
to
```
127.0.0.1
```
```
127.0.0.1
```
in your database connection string. This forces the app to use an IPv4 connection to the DB.
If the problem persists, you can try running a PostgreSQL database using Docker directly, instead of using
```
wasp start db
```
```
wasp start db
```
. Here's an example command:

   docker run --name mydb -p 5432:5432 -v mydb:/var/lib/postgresql/data -e POSTGRES_PASSWORD=postgresWaspDevPass -e POSTGRES_USER=postgresWaspDevUser -e POSTGRES_DB=mydb --rm postgres:16

   docker run --name mydb -p 5432:5432 -v mydb:/var/lib/postgresql/data -e POSTGRES_PASSWORD=postgresWaspDevPass -e POSTGRES_USER=postgresWaspDevUser -e POSTGRES_DB=mydb --rm postgres:16

Then, set your

DATABASE_URL

DATABASE_URL

environment variable to use

127.0.0.1

127.0.0.1

instead of

localhost

localhost

Make sure no other processes are using port 5432. You can check this on most systems using:

   lsof -i tcp:5432

   lsof -i tcp:5432

kapa.ai•1/5/25, 11:00 AM

Remember, when working with Wasp and PostgreSQL, you don't directly access the database through a web browser. Instead, your Wasp application interacts with the database using the connection details you provide.

If you continue to have issues, you may need to investigate further into your specific setup, as the exact cause can vary depending on your environment and configuration.

Github Issue #460 and Github Issue #1605 provide some additional context on similar issues that other users have encountered.
----------------------
Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
----------------------

kapa.ai•1/5/25, 11:00 AM

Sorry @Xuban, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist:

Perhaps try again in 15mins?

Xuban•1/5/25, 11:02 AM

~/documents/yawningstudio/app$ wasp db start

Starting a PostgreSQL dev database (based on your Wasp config)

Additional info:

Connection URL, in case you might want to connect with external tools:
postgresql://postgresWaspDevUser:postgresWaspDevPass@localhost:5432/OpenSaaS-f930d62e57

wasp-dev-db-OpenSaaS-f930d62e57

...

PostgreSQL Database directory appears to contain a database; Skipping initialization

2025-01-05 10:59:06.721 UTC [1] LOG: starting PostgreSQL 17.2 (Debian 17.2-1.pgdg120+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 12.2.0-14) 12.2.0, 64-bit
2025-01-05 10:59:06.721 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
2025-01-05 10:59:06.722 UTC [1] LOG: listening on IPv6 address "::", port 5432
2025-01-05 10:59:06.729 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
2025-01-05 10:59:06.740 UTC [29] LOG: database system was interrupted; last known up at 2025-01-05 10:56:36 UTC
2025-01-05 10:59:07.015 UTC [29] LOG: database system was not properly shut down; automatic recovery in progress
2025-01-05 10:59:07.021 UTC [29] LOG: redo starts at 0/8C226F0
2025-01-05 10:59:07.021 UTC [29] LOG: invalid record length at 0/8C22728: expected at least 24, got 0
2025-01-05 10:59:07.021 UTC [29] LOG: redo done at 0/8C226F0 system usage: CPU: user: 0.00 s, system: 0.00 s, elapsed: 0.00 s
2025-01-05 10:59:07.032 UTC [27] LOG: checkpoint starting: end-of-recovery immediate wait
2025-01-05 10:59:07.055 UTC [27] LOG: checkpoint complete: wrote 3 buffers (0.0%); 0 WAL file(s) added, 0 removed, 0 recycled; write=0.007 s, sync=0.003 s, total=0.027 s; sync files=2, longest=0.002 s, average=0.002 s; distance=0 kB, estimate=0 kB; lsn=0/8C22728, redo lsn=0/8C22728
2025-01-05 10:59:07.072 UTC [1] LOG: database system is ready to accept connections
2025-01-05 10:59:15.583 UTC [33] LOG: invalid length of startup packet

Are this errors ?

Xuban•1/5/25, 11:02 AM

@kapa.ai

kapa.ai•1/5/25, 11:02 AM

Let me check the knowledge base for you again. One moment! :books:

kapa.ai•1/5/25, 11:02 AM

Sorry @Xuban, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist:

Perhaps try again in 15mins?

Localhost 5432 is not working

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