How to monitor REDHAT cluster and report its capacity

[dlukinski]

Hello NAGIOS XI team

Please advice what is the best way to monitor REDHAT 6.x enterprise clusters and get their performance/capacity reported "as one", not as break-down per node?

Thank you

[rkennedy]

Have you searched our Exchange, for a plugin that does this? There seem to be a couple towards the bottom of this page, https://exchange.nagios.org/index.php?o ... rd=cluster

Are any of these what you're looking for?

[dlukinski]

Have you searched our Exchange, for a plugin that does this? There seem to be a couple towards the bottom of this page, https://exchange.nagios.org/index.php?o ... rd=cluster

Are any of these what you're looking for?

I am more and more worried that our move towards NAGIOX XI was a mistake to begin with:
- your general approach to clusters is a simple nodes health plus services running, but not components; while we need something that Zabbix does: representation of cluster as a single entity and thus proper capacity/performance reporting.

Is there anything like this Nagios XI could offer? (really same goes for Windows clusters too)

[tmcdonald]

your general approach to clusters is a simple nodes health plus services running, but not components

The issue with this statement is that, strictly speaking, Nagios XI doesn't really *have* an approach - we can monitor anything as long as there is a plugin for it. If there is a plugin that considers the cluster as a whole then we can absolutely do that. There may well be a plugin on our Exchange that does in fact monitor the cluster as you describe. Otherwise...

we need [...] representation of cluster as a single entity and thus proper capacity/performance reporting.

If a plugin does not currently exist for this, you can use something like BPI (Business Process Intelligence) to logically group hosts/services together into a "meta-group" so to speak, such that if X number of the members are in a non-OK state you can alert based off of that instead of any individual member's status.

https://assets.nagios.com/downloads/nag ... _Addon.pdf

Over the years I have found that Nagios XI monitors about 90% of what people typically need out of the box, another 9% can be monitored using plugins available on our Exchange (or elsewhere), and for about 1% of things there is not a plugin readily-available. I don't know of any software out there that can monitor 100% of things without some extra configuration, but we give people the ability to do just that with a little work.

[dlukinski]

your general approach to clusters is a simple nodes health plus services running, but not components

The issue with this statement is that, strictly speaking, Nagios XI doesn't really *have* an approach - we can monitor anything as long as there is a plugin for it. If there is a plugin that considers the cluster as a whole then we can absolutely do that. There may well be a plugin on our Exchange that does in fact monitor the cluster as you describe. Otherwise...

we need [...] representation of cluster as a single entity and thus proper capacity/performance reporting.

If a plugin does not currently exist for this, you can use something like BPI (Business Process Intelligence) to logically group hosts/services together into a "meta-group" so to speak, such that if X number of the members are in a non-OK state you can alert based off of that instead of any individual member's status.

https://assets.nagios.com/downloads/nag ... _Addon.pdf

Over the years I have found that Nagios XI monitors about 90% of what people typically need out of the box, another 9% can be monitored using plugins available on our Exchange (or elsewhere), and for about 1% of things there is not a plugin readily-available. I don't know of any software out there that can monitor 100% of things without some extra configuration, but we give people the ability to do just that with a little work.

Maybe we have a misunderstanding as here is what we are looking for:
- say we have active/passive or active/active cluster
- we have to know current and predict future utilization of CPU/RAM for the entire cluster (and not per node, which would not work for active/active scenarios anyways)

Thank you

[tmcdonald]

So you're not talking about just monitoring, it looks like you are specifically referring to the Capacity Planning report? If that is the case then you are correct, currently that only addresses a single host and does not have the logic to aggregate hosts into a cluster as you describe. I would be happy to file a feature request for that if you would like.

[dlukinski]

So you're not talking about just monitoring, it looks like you are specifically referring to the Capacity Planning report? If that is the case then you are correct, currently that only addresses a single host and does not have the logic to aggregate hosts into a cluster as you describe. I would be happy to file a feature request for that if you would like.

Please file the feature request.

When it comes to Clusters (windows or linux), how to aggregate CPU/RAM performance stats?

[ssax]

I've created two feature requests with links back to this thread for more information.

Capacity Planning:

Code: Select all

NEW TASK ID 7757 created - Nagios XI Feature Request: Capacity Planning - Add the ability to report metrics for an entire cluster (aggregate)

XI Aggregation:

Code: Select all

NEW TASK ID 7759 created - Nagios XI Feature Request: Add the ability to aggregate host/service metrics for clusters

You may be able to achieve the aggregation data with this plugin:

https://exchange.nagios.org/directory/P ... 29/details

[dlukinski]

I've created two feature requests with links back to this thread for more information.

Capacity Planning:

Code: Select all

NEW TASK ID 7757 created - Nagios XI Feature Request: Capacity Planning - Add the ability to report metrics for an entire cluster (aggregate)

XI Aggregation:

Code: Select all

NEW TASK ID 7759 created - Nagios XI Feature Request: Add the ability to aggregate host/service metrics for clusters

You may be able to achieve the aggregation data with this plugin:

https://exchange.nagios.org/directory/P ... 29/details

Thank you

Please close this case