Prometheus

My company had several different products to monitor and alert on all aspects of IT. We began using Prometheus to consolidate all the monitoring and alerting products at the best possible cost (free). We also use Prometheus metrics to visualize the data in Grafana which helps get a better picture of our environment.

We primarily use Prometheus for metrics and alerting.
We use Prometheus to monitor http endpoints of our services and provide real time metrics such as how many 2xx responses in last 5 minutes out of total responses for a particular endpoint and how many 5xx responses for the same period.
This helps us keep a watch on error rates and we also have alert rules defined in Prometheus such as if 5xx responses increase beyond 80% in last 5 minutes then fire an alert.
It is solving the problem of getting to know when something wrong happens on production so that we can respond to it and fix it immediately.
It also provides us with useful metrics regarding the performance of our endpoints.
This ensures higher uptime of the services and fewer issues reported by the clients.

Prometheus is our tool of choice for collecting and aggregating metrics about the services we run. It is also our primary way of generating alerts; alerting is very important for us and we actively encourage developers to take any edge cases and errors that may arise into account as part of building any new services. Prometheus has been a good system to aid us with implementing this goal; furthermore, during an outage it allows us to quickly diagnose problems.

As this is an open-source tool, it solves our monitoring problem without cost. We have a lot of servers that need to be monitored very accurately, and Prometheus solves this problem. Containers' health check in the cluster. It provides a wide range of monitoring capabilities and it is really must-have tool to learn as it will make your job easy. The software allows us to predict future bottlenecks based on aggregated data that we collected previously.

This is a very good and effective monitoring tool we are using for the past 1 year and it seems a really very nice software. Implementation was not much difficult and not much easy but it is very easy to monitor to cover all metrics once implemented. A really very good software.