In a service which monitor a 1+1 chain, is it possible to generate an alarm if both chains are in alarm at the same time? Generally speaking, is it to derivate an alarm from logical combination of other alarms?
Hi Dominique,
I believe there are probably two possible approaches to tackle this problem.
First of all, a basic service is just grouping elements together with potentially some dynamic behavior and some other goodies, but it cannot generate a new alarm. Which is basically what you want in your scenario.
Therefore, you could 'upgrade' the service to an enhanced service. This means that the service will also have a service definition (=similar like a connector), and with that you can take information from the elements, bring it to the service level and do things with it there. So, you can take the severity of the elements of both chains and make a AND combination of them in the enhanced service. Then you can alarm on such service parameter. This means that you can generate a service alarm if both chains are in alarm. I believe a standard service definition might not be sufficient, but we can easily customize those. Don't hesitate to reach out to us if you need help with that.
An alternative approach would be to create a correlation rule which detects that both chains go into alarm and then generate a new alarm to report this situation.
Bert
Thank you Bert,
So is there a tutorial how to create an enhanced Service where we can apply logical operator such as AND between several alarms? For me this seems to be a good solution.