I’m trying to create a daemon in python. I’ve found the following question, which has some good resources in it which I am currently following, but I’m curious as to why a double fork is necessary. I’ve scratched around google and found plenty of resources declaring that one is necessary, but not why. Some mention … Read more
What is the best way to deploy Node.js? I have a Dreamhost VPS (that’s what they call a VM), and I have been able to install Node.js and set up a proxy. This works great as long as I keep the SSH connection that I started node with open. 16 Answers 16
I want to make a move to Docker, so I’ve just started to mess around with it. I’ve installed Docker on a VirtualBox Ubuntu 15.10 (Wily Werewolf) installation and as suggested here I then tried running a basic nginx Docker image: $ docker run –name mynginx1 -P -d nginx Cannot connect to the Docker daemon. … Read more
Searching on Google reveals x2 code snippets. The first result is to this code recipe which has a lot of documentation and explanation, along with some useful discussion underneath. However, another code sample, whilst not containing so much documentation, includes sample code for passing commands such as start, stop and restart. It also creates a … Read more
In the Python documentation it says: A thread can be flagged as a “daemon thread”. The significance of this flag is that the entire Python program exits when only daemon threads are left. The initial value is inherited from the creating thread. Does anyone have a clearer explanation of what that means or a practical … Read more
Let’s assume we have such a trivial daemon written in python: def mainloop(): while True: # 1. do # 2. some # 3. important # 4. job # 5. sleep mainloop() and we daemonize it using start-stop-daemon which by default sends SIGTERM (TERM) signal on –stop. Let’s suppose the current step performed is #2. And … Read more
What’s the best way to run scheduled tasks in a Rails environment? Script/runner? Rake? I would like to run the task every few minutes. 20 Answers 20
I’m trying to port a shell script to the much more readable python version. The original shell script starts several processes (utilities, monitors, etc.) in the background with “&”. How can I achieve the same effect in python? I’d like these processes not to die when the python scripts complete. I am sure it’s related … Read more
Since this post has gotten a lot of attention over the years, I’ve listed the top solutions per platform at the bottom of this post. Original post: I want my node.js server to run in the background, i.e.: when I close my terminal I want my server to keep running. I’ve googled this and came … Read more
