I used Docker Compose to install and run changedetection.io and everything’s working nice, but I want to enable Playwright content fetcher so I can specify when I want to be notified, and not just to be notified when there are even changes in the code of the site.
I can toggle an option in the changedetection settings to use WebDriver Chrome/Javascript instead of the default Basic fast Plaintext/HTTP Client, but when I tried to use the Visual Filter Selection within a watched item it tells me that:
Sorry, this functionality only works with Playwright/Chrome enabled watches. Enable the Playwright Chrome fetcher, or alternatively try our very affordable subscription based service. This is because Selenium/WebDriver can not extract full page screenshots reliably.
And honestly I want to try this to myself, not to just pay a subscription and that’s it. So, I keep up and read through their wiki and according to their own wiki while using a docker compose based Change Detection service (as I am) to enable Playwright content fetcher it’s as simple as:
In docker-compose.yml uncomment PLAYWRIGHT_DRIVER_URL under environment, and the playwright-chrome section under services.
I already tried that and toggle the fetching method to WebDriver Chrome/Javascript, but now instead of just not letting me using the Visual Filter Selection because of while trying to fetch any site it gives me this error:
Exception: HTTPConnectionPool(host='browser-chrome', port=4444): Max retries exceeded with url: /wd/hub/session (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fa4d42417e0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution'))
But before of doing these changes I didn’t receive any error message and everything works nice, so possibly I’m doing something wrong… Here is the pastebin of the docker-compose file that I edited, I won’t share it here because the format fucked the whole code.
Bud, if you don’t know how to read and understand your own logs, I can’t step through this entire thing with you. It’s literally telling you exactly what is wrong.
Did you ever find a solution? I’m on mobile, and the Pastebin formatting is a bit off, so I can’t read the compose file very well. However, I suspect the error is related to this line:
Since a colon (‘:’) is used to indicate a volume, it makes sense that the error is about a missing volume. Try wrapping the line in double quotes like this:
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The chrome instance is commented out…
I tried to uncomment it and now I get this message when I try to start the service:
service "changedetection" refers to undefined volume WEBDRIVER_URL=http: invalid compose projectBud, if you don’t know how to read and understand your own logs, I can’t step through this entire thing with you. It’s literally telling you exactly what is wrong.
Sorry, I just started selfhosting and even reading that I don’t understand.
Search for the word “changedetection” in your compose file, then find out why it thinks you have a volume named WEB_DRIVER
I’d assume your formatting is off.
Did you ever find a solution? I’m on mobile, and the Pastebin formatting is a bit off, so I can’t read the compose file very well. However, I suspect the error is related to this line:
Since a colon (‘:’) is used to indicate a volume, it makes sense that the error is about a missing volume. Try wrapping the line in double quotes like this:
to see if that fixes the error.
Ups, you’re right although I think I had already uncommented it without success, in a couple of hours I’ll let you know if that solves it.