These are common in Prometheus, but not useful to graph. I'll show you how to approach both. It's easy to filter by label. http_requests_total{job="prometheus" ...
sum by (cluster_name) 每个结果里的value值的求和,单位没限制，例如请求总时间: topk(3,count_netstat_wait_connections) 前n条时序 进行瞬时报警，不是为了观察曲线图. bottomk() 后n条时序: quantile(0.5, http_requests_total) 当φ为0.5时，即表示找到当前样本数据中的中位数: min max avg
round () round (v instant-vector, to_nearest=1 scalar) rounds the sample values of all elements in v to the nearest integer. Ties are resolved by rounding up. The optional to_nearest argument allows specifying the nearest multiple to which the sample values should be rounded. This multiple may also be a fraction.
16.03.2021 · For the seasoned user, PromQL confers the ability to analyze metrics and achieve high levels of observability. Unfortunately, PromQL has a reputation among novices for being a tough nut to crack. Fear not! This PromQL tutorial will show you five paths to Prometheus godhood. Using these tricks will allow you to use Prometheus with the throttle ...
In Grafana 5.3, they introduced $__range for Prometheus that's easier to use: sum(rate(http_requests_total[$__range])). This variable represents the range ...
27.05.2021 · Table of Contents #1 Pods per cluster #2 Containers without limits #3 Pod restarts by namespace #4 Pods not ready #5 CPU overcommit #6 Memory overcommit #7 Nodes ready #8 Nodes flapping #9 CPU idle #10 Memory idle Dig deeper. In this article, you will find 10 practical Prometheus query examples for monitoring your Kubernetes cluster .
For example, this expression returns the unused memory in MiB for every instance (on a fictional cluster scheduler exposing these metrics about the instances it runs): (instance_memory_limit_bytes - instance_memory_usage_bytes) / 1024 / 1024. The same expression, but summed by application, could be written like this: sum by (app, proc ...
21.02.2020 · How to query prometheus to have sum of “disk bytes read” by instance/node/server name ? The result we want is something like that : node2 => 22082332072448 node4 => 8439202548224 node5 => 28203612148224 node6 => 56887513977344 node3 => 30887053824 node1 => 36352176166912
09.05.2016 · How not to do it. A common mistake is to try to take the sum and then the rate: rate (sum by (job) (http_requests_total {job="node"}) [5m]) # Don't do this. Even if you've worked around this being invalid expression with a recording rule, the real problem is what happens when one of the servers restarts. The counters from the restarted server ...
to Prometheus Developers. I've been trying to display the sum of a counter metric for each calendar day, but have had no luck so far. For example, sum up ...
06.01.2020 · Prometheus : how do i sum by with 2 different metrics. Ask Question Asked 1 year, 11 months ago. Active 1 year, 11 months ago. Viewed 8k times 5 1. I have 2 different metrics : metric_a with a field type metric_b with a field type (same one) I'm trying to summarise ...