What is Prometheus not good for?

What is Prometheus not good for?

Prometheus’ primary focus is on reliability rather than accuracy. For this reason, it is ideal in highly dynamic systems such as microservices running in a cloud environment. It is probably not a good fit for a system that requires high accuracy, such as a billing application.

Is Prometheus accurate?

Prometheus values reliability. You can always view what statistics are available about your system, even under failure conditions. If you need 100% accuracy, such as for per-request billing, Prometheus is not a good choice as the collected data will likely not be detailed and complete enough.

How do I check my Prometheus data?

Let us explore data that Prometheus has collected about itself. To use Prometheus’s built-in expression browser, navigate to http://localhost:9090/graph and choose the “Console” view within the “Graph” tab.

How many metrics can Prometheus handle?

Prometheus can handle millions of time series. However, with the above mentioned default setting for storage. local. target-heap-size , you will be limited to about 200,000 time series simultaneously present in memory.

Is Prometheus hard to learn?

Prometheus is easy to setup but it barely does anything. It gets really messy when one needs to gather application metrics (postgresql, cassandra, haproxy, java, etc…) and have dashboards and alerts going to different places (slack, email, etc…).

How much does Prometheus cost?

Pricing comparison‍ Prometheus is open source, and free. Business-ready Prometheus as a Service by MetricFire, including Hosted Prometheus, Hosted Graphite AND Grafana, starts at 85 USD a month. Datadog’s Enterprise package starts at $23 per host, per month, with a minimum sign up of 100 hosts.

How do I change my retention on Prometheus?

You can increase this period in the Prometheus configuration file as follows:

1. On the management node, open the /etc/sysconfig/prometheus file to edit, set the needed retention period for the STORAGE_RETENTION option, and save your changes. For example:
2. Restart the Prometheus service: systemctl restart prometheus.service.

How much RAM does my Prometheus need for ingestion?

You can expect RSS RAM usage to be at least 2.6kiB per local memory chunk. The chunks themselves are 1024 bytes, there is 30% of overhead within Prometheus, and then 100% on top of that to allow for Go’s GC.

Can you cluster Prometheus?

At Mattermost, a default version of the Prometheus server is installed in each one of our clusters and a Prometheus federation server is deployed together with Grafana in a central monitoring cluster. Prometheus federation scrapes data from all the other Prometheus servers that run in our clusters.

What is Prometheus good for?

Prometheus is a free software application used for event monitoring and alerting. It records real-time metrics in a time series database (allowing for high dimensionality) built using a HTTP pull model, with flexible queries and real-time alerting.

How does Zabbix integrate with Prometheus?

The provisioner will connect to your prometheus to get the current configured rules and will create a host/items/triggers accordingly. Data for those items can then be sent via a webhook: https://github.com/gmauleon/alertmanager-zabbix-webhook. The concept is to use annotations in prometheus rules, along …

What is the use of error increase () in Prometheus?

The Prometheus increase () function cannot be used to learn the exact number of errors in a given time interval. However, it can be used to figure out if there was an error or not, because if there was no error increase () will return zero.

How do you evaluate error counters in Prometheus?

In our tests, we use the following example scenario for evaluating error counters: An application writes an ERROR message to a log file every minute. grok_exporter is configured with a counter metric named errors_total that increases whenever the ERROR is logged. Prometheus collects the metrics every 15 seconds.

What to do when Prometheus fails to start up on Linux?

This error occurs when you use Prometheus on Linux (not on Linux VM). You just need to unplug your device, exit from DFU mode and use the restore command as usual.

How do I fix Prometheus image not found error?

This error occurs when you use Prometheus on Linux (not on Linux VM). You just need to unplug your device, exit from DFU mode and use the restore command as usual. Q. I am getting the image not found error – “Reason: image not found Abort trap: 6”.