Prometheus compare two metrics. I hope you can help with the following question.

• Prometheus compare two metrics However, apparently: \1 backreference (NOT SUPPORTED) May 11, 2020 · How would I join metrics by their similar labels and calculate the difference? Example I have metric for tracking the inventory from two systems. This metric will contain the seal reference and the sealID, checkID, and any other label it appropriately maps onto. PromQL, short for Prometheus Query Language, is a powerful tool that allows you to filter and select metrics based on various criteria. If you want to extract Prometheus metrics from application logs, Grafana Loki is designed for just that. This is achieved using PromQL (Prometheus Query Language) to create queries that merge related metrics based on their labels, allowing for a more comprehensive view of the data. Something I would do, but doesn't work is: Nov 22, 2016 · Prometheus is built around returning a time series representation of metrics. Is this even possible? I'm using the latest version of prometheus and scraping rabbitmq via it's built-in prometheus metrics plugin. Best course of action in this case would be to split your metric into two metrics: my_metric 123 my_metric_expected_value 123 And introduce alerting rule based on expression: my_metric != my_metric_expected_value May 15, 2019 · I have a Prometheus metric called device_number. Aug 15, 2022 · I have an application that has a lot of useless metrics that I want to weed out before scraping. In many cases, however, I only care about what the state of a metric is right now, and I'm having a hard time figuring out a reliable way to get the "most recent" value of a metric. Jul 28, 2024 · Filtering Prometheus Metrics: Comparing One Label Value to Another Label Value Metric. May 14, 2020 · It partially works. We monitor when this file gets updated and Oct 25, 2024 · You can divide one metric by another to normalize or compare values. 12. The only way I see to achieve that would be to add a label used for identifying the corresponding expected. It does something like this: exporter1_metric() > exporter2_metric() When the first metric returns null, the comparison does not work since null != number. Select "other" metrics with 10 minutes offset, so we always compare "main" update time with the latest "other" metric update time taken at now - 10m moment, which gives "main" module 10 minutes to do its work: Aug 4, 2021 · How to join Prometheus metrics by label with PromQL; Bringing it all together. That is why min function in Prometheus has one argument not more. Which means subtracting two values with two different timestamps. The other metric (metric1) is sometime empty but when it is not, it's always the good value. For those interested in a Prometheus managed service or unifying metric monitoring with log and trace analysis, we’ll also weave Logz. The Grafana blog post Logs and Metrics and Graphs, Oh My! provides more details about the differences between logs and metrics. Since right now it's getting metrics every 30 seconds, I tried something like this: Oct 29, 2023 · Hi All, I am very new to Grafana, I watched some tutorials but I didn’t find anywhere the answer that I needed. You can adjust this behaviour using ignoring: If we need to ignore a few labels we should use comma (ignoring (label1,label2)) or few ignoring operators? Apr 9, 2020 · In order to compare two different metrics, you must write the query so that the same labels are also being compared… For example there are 3 labels shown in this metric: group; instance; job Mar 25, 2020 · You have two metrics you want to compare but it just won’t work! I’ll detail some examples here. We needed to compare file sizes of a single file, but on two different hosts. One of the rules I have compares two metrics from different metrics exporters. regex: ^(. instance, queue). Jun 13, 2021 · Reading the code, feeding my local Prometheus playground with artificial metrics, running test queries, and validating assumptions, finally helped me understand how multiple metrics can be joined together. io Prometheus-as-a-service into the 10k series Prometheus metrics; 500 VUh k6 testing; 50 GB logs, traces, and profiles; 50k frontend sessions; 2,232 app o11y host hours; 2,232 k8s monitoring host hours; 37,944 k8s monitoring container hours; and more cool stuff Sep 14, 2019 · Compare 2 metrics in Prometheus. May 10, 2018 · What the right way to compare 2 metrics? The different value for the env label means that there's nothing to match on each side of the expression, so it returns nothing and there's no alerts. I don’t know the value of “id” beforehand, that is always automatically generated. May 2, 2019 · Scalars are comparable - but vectors in general are not. I thought I had a great solution by using this bit of regex: action: drop. That one argument actually is a Longer answer: Prometheus is a system to collect and process metrics, not an event logging system. When joining two metrics in Prometheus, there are several common pitfalls you might Jul 30, 2019 · In order for the comparison to work, you need to know the name of the metrics in advance. How to execute a query with two metrics in Prometheus? 2. Prometheus return no data when calculating a ratio of two metrics. +);\1. If you want to compare them you have to define mathematical metrics by which they can be measured. InfluxDB to compare two modern monitoring solutions, examining their similarities and differences, and identify their best use cases. It fails in those periods of time where an "other" metric has updated, but "main" has not yet: Attempt #2. The two metrics you compare should be related in some way. I. May 9, 2023 · I am using Prometheus to monitor a list of servers. Dec 2, 2024 · Joining two metrics in Prometheus is commonly achieved through the use of the * operator or the group function, allowing you to perform operations between metrics based on their labels. May 11, 2020 · How would I join metrics by their similar labels and calculate the difference? Example I have metric for tracking the inventory from two systems. , compare the latest value from a currently running worker to a value of this metric from ANY worker that ran 24h ago. Unlike traditional SQL databases, Prometheus does not have a direct JOIN function; instead, you leverage label matching and arithmetic operations to combine This post will pit Prometheus vs. The metrics that are useless have label_one and label_two that do not match. You can repurpose the tooling that generates the 18,000 rule groups to instead generate a Prometheus metrics file that contains the metric sli_info. When using PromQL to compare two metrics, there are a few best practices to keep in mind: Choose the right metrics to compare. I can obtain a label value os_name from two different metrics called here metric1 and metric2. e. Mar 5, 2018 · Prometheus has other query functions called label_join and label_replace which allow you to create custom labels on one of your metrics. In your case you might want to use label_replace to append _name to kube_pod_container_resource_requests_memory_bytes . So, I have the following example metrics Jul 22, 2023 · The key issue was that this metric is calculated by many workers, and it appeared that the delta is calculated per each worker. Jun 29, 2023 · You cannot. inventory_quantities{sku="ABC", system="warehouse1"} value = 5 inventory_quantities{sku="ABC", system="warehouse2"} value = 15 I want to join on the SKU Apr 3, 2019 · I could create 2 metrics stock_price and stock_volume, or 1 metric with a label having values price and volume, but either way, when querying, these two series would need to be joined on the client using the timestamp as a key, which seems wasteful and much more complex than InfluxDB. I'm wondering if it's possible to calculate a "global" delta. One common use case is to compare the value of one label to the value of another label for the same metric. I have the numbers push to the same metric but use labels to identify where the metric came from. I hope you can help with the following question. For example, you might compare the `requests_total` metric to the `errors_total` metric to see how the number of requests is related to the number of errors. One needs to have an array of comparable elements in order to determine minimum amongs them. errors_total / total_requests. Labels are not supposed to be used in this way, and there are no ways of combination labels and metric values. It allows you to compare metrics on different scales, calculate rates and efficiency metrics, and identify trends and anomalies. Dec 25, 2024 · Metric division is a powerful technique in Prometheus for deriving meaningful insights from time series data. I have two Prometheus metrics, and both of the metrics have an “id” label, and many other labels. PromQL Basics Jun 25, 2021 · Here is the situation and what I'm trying to achieve: On two distinct servers we have one file per host that gets updated once per day for multiple hosts. Checking around I don't find any useful documentation on how to do it. What I want is to show the difference in value between now and one day/week/month etc ago. Is there a better way? Nov 15, 2024 · How to join two prometheus metrics to get CPU usage per user-defined pod label? 2 Throughput calculation in Prometheus metrics from post_seconds_count, post_seconds_sum and post_seconds_max Oct 14, 2024 · Metric joining in Prometheus is a method of combining two or more metrics to build more complex and insightful queries. 26. Apr 24, 2021 · The individual metrics are no problem to find but I cannot comprehend how I am going to AND the different metrics in one query, grouping them by a set of labels (ie. One metric (metric2) have always a result. . ldiyx fpcqdp szsloi xlni hkqc rmrtp ugtl ywpgm ozbvhh ulfepvk iexqkm pseyhlh bcii edmhqp zlogm