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Questions tagged [metrics]

metrics are a way to measure things.

Metrics are a way to measure things.

For instance, in networks, it is used to identify the cost of an operation. If you have a packet that needs to go from router A to router B, it can get there by either going through router D or router C. Router A will calculate the cost, this is based on metrics. A router can calculate a metric by looking at what routing protocol is used by another router and its bandwidth. It will try to always use the router with the lowest metric.

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What metrics should I watch when I monitor a server?

I saw a lot of monitoring tools and mostly show the same things. But I'm wondering if it's really necessary to watch all of these things. I would like to know which metrics really matter for example a web server that mainly run a website, with…
yvan
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Monitoring tools that can take high rate and high volume?

We're using Cacti with RRDTool to monitor and graph about 100,000 counters spread across about 1,000 Linux-based nodes. However, our current setup generally only gives us 5-minute graphs (with some data being minute-based); we often make changes…
Jon Watte
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Do prometheus metrics have some sort of "freshness" lifetime?

I'm scraping some metrics (openstack cinder volume sizes) every 15 minutes, and the results produce a discontinuous graph, like this: (That's the result of the simple query cinder_volume_size_gb). The metrics "exist" for about five minutes, but…
larsks
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Disk usage metrics missing from Prometheus node exporter

I used Prometheus and node exporter a while ago and had access to node_filesystem_* metrics to monitor disk usage but I've recently fired it up on some other servers (Ubuntu Linux) and those metrics seem to be missing. According to this…
Sam
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How to compare CDN services?

What are the metrics and their priorities to compare various CDN services?
Jeff
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LAMP monitoring by zabbix

Someone have experience with lamp monitoring ? I mean standard monitoring and slow queries monitoring for mysql, virtual hosts load as well. And alerting if something going not well. Cacti is very cool tool for this, but it has no alerts system and…
user8529
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Kubernetes Nginx Ingress Controller Metrics

I've tried to find a documentation about the metrics exposed by the NGINX ingress controller in Kubernetes but so far I haven't found any reliable source about the metrics and what they mean. For example, there are three different request_size…
MysteriousPerson
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How do I configure Prometheus for aggregated metrics?

I have five related questions around the configuration of Prometheus for aggregated metric reception. There are some invariants in my system: Python server code that needs to be instrumented Prometheus service that needs to get aggregated metrics…
Reinderien
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kubectl top node doesn't work. Looks like an issue with heapster

I have a fresh k8s cluster on gke. Whenever I run kubectl top node gke-data-custom-vm-6-25-0cbae9b9-hrkc I get Error from server (NotFound): the server could not find the requested resource (get services http:heapster:) At the same time I have…
Korjavin Ivan
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The command route the "Use" field is only zeroed, it does not count the route searches chosen

The route command output shows me the "Use" field but it always goes to zero, would not it be the route lookups because it does not count would it have something to activate so that it starts counting?
Ricardo Barbosa
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Stackdrive agent metric isn't propagated to GCE instance-group-manager autoscaler

I'm trying to set up autoscaling group of instances on GCE. Autoscaling policy setup to add instance(s) based on percent of used memory. On every instance I installed Stackdriver Monitoring Agent (collectd) like this: $ curl -O…
vtrv101
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Something for Icinga like sensu-metrics-relay

I used to work with Sensu and I was using a plugin called sensu-metrics-relay so I could easily forward some metrics collected using a jenkins plugin called "Metrics Plugin" to graphite. Now I am using Icinga and I would like to do the same, how can…
Mallouli Boulbeba
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What is the counter type for Linux's /sys/block/$DEVICE/stat

What are the counter types for /sys/block/$DEVICE/stat? $ cat /sys/block/sda/stat 8323741 42381356 464031898 19207478 1940738 49062039 408122282 79935459 0 22315734 99172579 Specifically, do they rollover? At what value? The documentation…
dialt0ne
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Negative Request Per Second observed?

I'm currently looking at my Nagios metrics, and especially on my WebServers and I suddently noticed that sometimes, I've a negative amount of Request per second and other metrics, how it is possible?? I though that Request per second or Connection…
Dr I
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What tools are available to capture and report system (application, database and sys) metrics?

I'm looking at setting up a tool for collecting usage data and KPIs from multiple systems on various platforms. We'd like to regularly report on key indicators on system usage and health. It doesn't need to be real time monitoring just monthly…
Mark Nold
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