Hello I am testing prefect setup using

Question

Hello I am testing prefect setup using <https kind sigs k8s io docs user quick start |KIND> Basically there is no difference between kind and kubernetes I am facing to connect to graphql api Have anybody had similar problem

nicholas · Answer

Hi < Rafal> can you confirm the API is available at that address and port from elsewhere

nicholas · Answer

perhaps a cURL request or just visiting the URL in question

Rafal · Answer

so after visiting I can see statement `GET query missing`

nicholas · Answer

Ok great that s what you d expect if it was available

nicholas · Answer

You visited that exact URL that s displayed in the UI right

Rafal · Answer

That s right

nicholas · Answer

Hm that s interesting Are you able to remove the existing UI image and spin up server again or just the UI image at least

Rafal · Answer

ok I deployed UI once again The same result thinking face

nicholas · Answer

That s very odd Is that endpoint open to all external traffic Or are there some VPC rules attached

Rafal · Answer

What do you mean by saying extarnal There are no VPC rules behind it in kind kubernetes nodes are simulated by containerds

nicholas · Answer

Ah I hadn t noticed that was a 172 IP my fault I think I see the issue though try adding the protocol to your config `<http 172 18 0 2 32000 graphql>` and then removing the UI image and restarting

Rafal · Answer

I ve already added it in UI deployment `env ` ` name PREFECT SERVER GRAPHQL URL` `value 172 18 0 2 32000 graphql `

nicholas · Answer

Yes you re missing the protocol `http`

Rafal · Answer

< nicholas> now all is green Seems like working But there is another question how to register flow I guess it comes to start agent thinking face

nicholas · Answer

To register a flow you ll want to add this to your local Prefect `~ prefect config toml` ``` server endpoint = 172 18 0 2 32000 graphql ```

nicholas · Answer

Then you can call `prefect backend server` and any `prefect register ` calls will send requests to your API container

Rafal · Answer

Ok I ve added ` name PREFECT SERVER ENDPOINT` `value 172 18 0 2 32000 graphql ` to prefecthq server image Error ```requests exceptions ConnectionError HTTPConnectionPool host= localhost port=4200 Max retries exceeded with url graphql alpha Caused by NewConnectionError lt urllib3 connection HTTPConnection object at 0x7ff77c2d35b0 gt Failed to establish a new connection Errno 111 Connection refused ``` thinking face

nicholas · Answer

When s that error happening < Rafal>

nicholas · Answer

Are you registering flows running your flow scripts from within a docker container

Rafal · Answer

No should I When I am trying to register flow Do I miss something How to register flow when prefect is running on local cluster

Rafal · Answer

< nicholas> should I run prefect agent as a docker container No idea how to setup it correctly

nicholas · Answer

No just checking The endpoint variable needs to be set in the environment you re registering flows from i e your local machine You can do so easily with the `~ prefect config toml` configuration file

nicholas · Answer

No < Rafal> no need to run the agent in a container but you do need to point your local prefect at your cluster

Rafal · Answer

Ok but all of prefect s components are running on cluster What should run on my localhost excactly I need some port forwarding I do not use confi toml just notation from docs `PREFECT and two underscores `

nicholas · Answer

Understood when you re writing registering flows on your computer Prefect needs to know where your server is running if it s not localhost or <http cloud prefect io|Cloud>

Rafal · Answer

So maybe one of the solution is to add volume with flows to `prefecthq server` image and register it directly from there as localhost Is there another option besides Cloud solution

nicholas · Answer

There s no need for that you just need to set the local config that I mentioned then whenever you register a flow locally it will register with your cluster

Rafal · Answer

OK So I needed to create `~ prefect config toml` and after providing config which you suggested I ve got ```raise InvalidSchema No connection adapters were found for r format url requests exceptions InvalidSchema No connection adapters were found for 172 18 0 2 32000 graphql graphql alpha ```

nicholas · Answer

Which version of Prefect Core do you have locally I think updating your version should fix that

Rafal · Answer

```0 11 5``` I will try with update

nicholas · Answer

Hm let me check then

nicholas · Answer

< Rafal> can you try adding the protocol `http` to that as well

nicholas · Answer

Ah nevermind the config should look like this ``` server endpoint = 172 18 0 2 32000 ``` sorry about that

Rafal · Answer

< nicholas> next step closer to solution wink It was registered but two things wich I am worry about `Flow ` still localhost Second one tasks can t run Some strange monit about Late runs Does it mean that scheduler is not working properly

nicholas · Answer

I think setting ``` server host = <http 172 18 0 2> ``` will fix that flow register output but it s not impacting the registration at all Do you have an agent running That ll be needed to pick up runs

Rafal · Answer

< nicholas> prefect works perfectly fine Seems like agent need to run all the time to keep flows up to date Should I keep agent running in container on cluster for example Sometimes I need to turn off my local computer wink

nicholas · Answer

Yes an agent will need to be running to pick up any flow runs I d recommend taking a look at <https docs prefect io orchestration tutorial multiple html install a supervised agent> for some supervised agent info