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POMonitoring service with web API and GUI
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copied!<p>I need to do cross platform (Linux/Windows) application, which runs in the background on the server, performs monitoring of the local system via net sockets as well it monitors CPU usage plus it's using some external commands to find out state of the system, starts / stops non-responsive or faulty processes on the same server, reports results to remote mysql cluster as well exposes web API and GUI, so one can see what is happening and configure it. In case this process faults, it needs to auto-restart, send mail confirmation etc. I know it can sound weird, but the app could be designed the way, that it runs e.g. 100 monitoring threads (each as separate thread process), which each one is not blocking another one. This is easier to implement than single thread with all non-blocking stuff. Note that simplicity of implementation is more important than actually philosophy of coding. This is also important because of real-time requirements - each check must be performed every 1 second and act instantly.</p> <p>I have done such an app in C# and it took me only one day to do it. It's using windows specific stuff so it's not portable to Mono at all, but it runs now for 6 months on 40 production systems and it never faulted because it's handling all exceptions properly, that's why I would prefer to do it in a language which has nice try/catch statements like C#, it's just plain effective. This windows app is also using standard winforms / WPF interface for configuring etc, but for Linux I guess I would need to use web based GUI.</p> <p>Now I need to do the same for Linux. but I would do something which runs on Windows too, so both share at least part of the same code.</p> <p>There are some performance requirements - this app receives messages via UDP via 50 ports (it needs to make sure that the server is receiving streams), each at 10Mbit and C# has no problem with handling it. It's really just checking if the streams are on, it's not analyzing these packets.</p> <p>I would like to ask you, what is the best architecture / language to design and implement this kind of app, so it's most optimal? E.g. one can do PHP gui interface and C/C++ backend monitoring (or perl or python), but to run PHP I will need to run apache, which is a bit complexity added.</p> <p>Since these 10Mbit streams must be handled the way, that exactly 1 second of UDP stream not coming in must be detected, I was wondering if Java with garbage collector which likes to pause is a good choice (well, these pauses seems to be proportional to memory usage, which would not be huge in this case), but I guess it could be viable option, but I dont know how to design such an app, so it runs proper background process as well web interface. Do I need to run glassfish or tomcat? Do I need to use any libraries?</p> <p>These servers are having lot's of memory and CPU.</p> <p>It's just mainly for managing availability in the clusters.</p> <p>I used to program java 10 years ago in Eclipse and Netbeans, but I have lot's of time for learning :D I have both installed on my laptop - they are both very nice.</p>

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