Railway•11mo ago

Deployment order

Is there a way to configure a deployment order so that service A only starts when service B has started and is healthy?

15 Replies

Percy•11mo ago

Project ID: 120b5ec5-59d8-4087-84ae-4e0b3d934aa7

johns•11mo ago

120b5ec5-59d8-4087-84ae-4e0b3d934aa7 Pretty standard k8 feature but I couldn't find it

Brody•11mo ago

there is not, railway also does not use k8s

johns•11mo ago

I see

Brody•11mo ago

you would need to have your app wait for the other service to come online

johns•11mo ago

With a start script or something right? I see

Brody•11mo ago

what kind of service do you need to be online first?

johns•11mo ago

The Datadog client

Brody•11mo ago

you can just wait on a dial conn then once that connects you start your app

johns•11mo ago

It would be nice if there's a util function that takes the internal host name as argument and checks for that I mean I'll have to write it but if it was provided somewhere haha It's just annoying to keep track of the correct api for IPV6 UDP

Brody•11mo ago

there definitely exists such a thing

johns•11mo ago

So for us it's datadog.railway.internal - is there a cli command that loops to check if it exists

Brody•11mo ago

thats a google question

johns•11mo ago

while true; do
    ping6 -c 1 datadog.railway.internal &> /dev/null
    if [ $? -eq 0 ]; then
        echo "Successfully connected!"
        break
    else
        echo "Attempting to connect..."
        sleep 5   # Sleep for 5 seconds before retrying
    fi
done

while true; do
    ping6 -c 1 datadog.railway.internal &> /dev/null
    if [ $? -eq 0 ]; then
        echo "Successfully connected!"
        break
    else
        echo "Attempting to connect..."
        sleep 5   # Sleep for 5 seconds before retrying
    fi
done

Brody•11mo ago

looks like it does what you want

Gaming

Programming

Deployment order