# 없다 (blogs) — RSS Amplifier Recent posts from the 1 feeds in the RSS Amplifier directory that cover 없다. Page: Feed: --- ## [Prometheus with Thanos ruler](https://blog.anarcher.dev/post/2026/07-12-prometheus-with-thanosruler/) _2026-07-12 · ted@daangn.com (Anarcher) · Anarcher's Trashcan_ TL;DR As a Kubernetes cluster grows, a single Prometheus cannot handle all scrape targets, so Prometheus is sharded into multiple instances. Once Prometheus is sharded, each shard only has a partial view of the metrics, so recording/alerting rules that need a global view no longer evaluate correctly on individual shards. Thanos Ruler evaluates PrometheusRules against Thanos Query, which provides a… ## [When Kubernetes Nodes Exceed 1000](https://blog.anarcher.dev/post/2025/08-15-prom-endpoints/) _2025-08-15 · ted@daangn.com (Anarcher) · Anarcher's Trashcan_ TL;DR When Kubernetes nodes exceed 1000, node exporters deployed as DaemonSets on each node also increase. When Prometheus Operator performs Service discovery with Service monitor, it references the service’s endpoints by default. Kubernetes Endpoints objects have a default limit of 1000 IPs. Only 1000 Prometheus scrape targets are maintained. Prometheus should use endpointslices instead of… ## [A toy tool for generating Kubernetes manifests in Rust](https://blog.anarcher.dev/post/2025/05-25-kamut/) _2025-05-25 · ted@daangn.com (Anarcher) · Anarcher's Trashcan_ My personal criticism of Helm is the part where it generates Kubernetes resources by composing YAML with text templates. Actually, the template/values pattern of Helm charts is also used in kube-prometheus’s jsonnet, and there’s a need to abstract and manage complex configurations. ## [GreptimeDB as Prometheus Long-term Storage](https://blog.anarcher.dev/post/2025/04-13-greptimedb-intro/) _2025-04-13 · ted@daangn.com (Anarcher) · Anarcher's Trashcan_ Is GreptimeDB suitable as a long-term storage solution for Prometheus? To find an answer to this question, I set up a simple configuration of GreptimeDB (v0.13) to investigate. What is GreptimeDB? GreptimeDB is an open-source cloud-native time series database that integrates metrics, logs, and events.