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Joined 12 days ago
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Cake day: December 4th, 2025

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  • How do you notify yourself about the status of a container?

    I usually notice if a container or application is down because that usually results in something in my house not working. Sounds stupid, but I’m not hosting a hyper available cluster at home.

    Is there a “quick” way to know if a container has healthcheck as a feature.

    Check the documentation

    Does healthcheck feature simply depend on the developer of each app, or the person building the container?

    If the developer adds a healthcheck feature, you should use that. If there is none, you can always build one yourself. If it’s a web app, a simple HTTP request does the trick, just validate the returned HTML - if the status code is 200 and the output contains a certain string, it seems to be up. If it’s not a web app, like a database, a simple SELECT 1 on the database could tell you if it’s reachable or not.

    Is it better to simply monitor the http(s) request to each service? (I believe this in my case would make Caddy a single point of failure for this kind of monitor).

    If you only run a bunch of web services that you use on demand, monitoring the HTTP requests to each service is more than enough. Caddy being a single point of failure is not a problem because your caddy being dead still results in the service being unusable. And you will immediately know if caddy died or the service behind it because the error message looks different. If the upstream is dead, caddy returns a 502, if caddy is dead, you’ll get a “Connection timed out”





  • That isn’t entirely true. While a phone without a SIM can still listen to broadcasts, it never registers as a subscriber because It’s missing a IMSI. So no, without a SIM you are indeed invisible to carriers. It’s a bit like screaming into the woods - someone might hear you if you do that, but if he doesn’t scream back, you have no idea he’s there.

    The only exception to this if you’re actively calling emergency services - in that case, your phone will attempt an emergency attach to any network it can find, which is the point where the carrier of that network could see your IMEI. However, apart from that, you are indeed completely invisible without a SIM card.


  • Not having a SIM-Card in your phone is like having a tank without a main gun - it drives, but it can’t really do what it’s supposed to do. I don’t think that it’s a good idea. Also, not having a SIM-Card doesn’t make you invisible - only airplane mode really does that. Without some kind of network connectivity, you have an expensive, glorified brick that can make photos, play games and lets you listen to offline music.

    Also, I’m wondering what exactly you’re trying to achive. Get a private OS like graphene, don’t install any google services, have anti-tracking protection installed into the browser (or use a safe and sane browser by default) and you’re good.

    Not having a SIM doesn’t do anything for you except hiding from your carrier, however, if your threat model involves you being worried by being tracked by your carrier (and by extension, the feds), you’re in really hot water already and you’re probably better off with detaching yourself from the modern world.