Hello everyone 🙌 I'm having a problem with scheduling flows, all of my flows did not schedule automatically overnight and I can't activate them through the interactive API (When I try to

set_schedule_active

I always get

"success": false

). When I try to manually toggle the flow through the GUI the entire server hangs until I manually kill the GraphQL process on the server. Can anyone help or provide some insight? I'm acting as an interpreter for the tech team so I have to do some back and forth with my questions.

Hey @Gonzalo, that’s weird. It seems to be performance related on the GraphQL pod? This is Prefect Server right? Are all of your pods healthy? Is the db running out of memory?

Hey Kevin, yes, it is indeed Prefect Server. We're using Fargate Agent, not Kubernetes, so we're not sure what to answer regarding pods. The tech team says they're not sure what you mean when you refer to a db running out of memory.

@Gonzalo it looks like they're trying to start Prefect Server but port 5432 is already allocated, so Postgres is unable to start

Understood, I'll relay the information and I hope that solves it, thanks for the heads up!

The agent not spinning up makes sense if server doesn’t spin up. Did all of the containers spin up healthy when you did

prefect server start

? Still seems like something may have not spin up right

They're checking the logs right now

This is when starting an agent right? Are you able to access the UI/dashboard?

Yes, and yes I can access the dashboard

Can you try

query { hello }

in the interactive API?

It returns

{
  "data": {
    "hello": "👋"
  }
}

And when you query for flows, you see stuff?

query {flow {
  id
}}

I see several IDs

What kind of agent are you starting? Is that a docker agent?

It's a Fargate agent

Can you show me your config toml? just omit sensitive info

One second

Can you try adding

/graphql

after endpoint?

That's the server's file, they're telling me the agent has no .toml

Is the server on the same machine as the agent?

The server is on an EC2 instance and the agent is on an ECS machine

So with this walkthrough, you want

[server]
  [server.ui]
    apollo_url = "<http://YOUR_MACHINES_PUBLIC_IP:4200/graphql>"

on the server and

[server]
endpoint = "YOUR_MACHINES_PUBLIC_IP:4200/graphql"

for the agent. and also

prefect backend server

of course. Really weird if your agent has no config.toml cuz it looks like it’s hitting a nearly correct endpoint there.

I think we're not really understanding the config.toml as far as the agent goes, we only have one for the server (we tried adding "/graphql" to the end of the endpoint url to no avail).

You can make a

config.toml

for the agent also in that same

.prefect

directory

I think we found something, is GraphQL all on port 4200 by default? Some of our environment variables (such as GRAPHQL_SERVICE_PORT) point to 4201 instead

Not inside your working directory. Inside the

.prefect

directory where the

backend.toml

is? You already have a config? GraphQL on port 4201 looks good. But your endpoint will be on 4200

Yeah, there's already a

config.toml

there

@Gonzalo are you able to edit the existing

.prefect/config.toml

file on the agent ECS machine to include Kevin's addition?

[server]
endpoint = "YOUR_MACHINES_PUBLIC_IP:4200/graphql"