AgentSkillsCN

K8s Logs

通过 stern 从 Kubernetes 集群中获取 Pod 日志。需明确选择目标集群。

SKILL.md
--- frontmatter
description: "Fetch pod logs from Kubernetes clusters via stern. Requires explicit cluster selection"
allowed-tools: ["Bash"]
model: sonnet
context: fork

k8s-logs

Prerequisites

  • •stern CLI installed (brew install stern)
  • •kubectl CLI installed
  • •K8s bootstrap completed (shared with k8s-steampipe)

Usage

bash
# List configured clusters
~/.dataops-assistant/bin/k8s-logs.sh clusters

# List namespaces in a cluster
~/.dataops-assistant/bin/k8s-logs.sh <cluster> namespaces

# List pods in a namespace
~/.dataops-assistant/bin/k8s-logs.sh <cluster> pods <namespace>

# Fetch logs (stern query)
~/.dataops-assistant/bin/k8s-logs.sh <cluster> <namespace> <pod-query> [options]

Options

OptionDescriptionDefault
--since <duration>Show logs since (e.g., 5m, 1h)5m
--tail <lines>Number of lines to tail100
--container <name>Container name (multi-container pods)all
--timestampsInclude timestampsoff
--previousShow logs from previous instanceoff

Cluster Selection

CRITICAL: You MUST ask the user which cluster to query. Never assume or default.

Available clusters (run clusters command to get current list):

  • •EKS: dss-eks-platform-dev, dss-eks-platform-prod
  • •AKS: datascience-primary-cluster, mathom-primary-cluster, dev-experiment-cluster, stage-experiment-cluster

Instructions

  1. •Ask the user which cluster to query (show available options)
  2. •List namespaces to help them identify the right one
  3. •List pods to identify the query pattern
  4. •Fetch logs with appropriate options

Examples

bash
# Flyte workflow logs (last 5 min)
~/.dataops-assistant/bin/k8s-logs.sh datascience-primary-cluster flyte "workflow-*"

# CoreDNS logs with timestamps
~/.dataops-assistant/bin/k8s-logs.sh dss-eks-platform-dev kube-system "coredns-*" --timestamps

# Previous container instance logs
~/.dataops-assistant/bin/k8s-logs.sh mathom-primary-cluster default my-pod --previous

# Last hour of logs
~/.dataops-assistant/bin/k8s-logs.sh dss-eks-platform-prod app "api-*" --since 1h --tail 500

Notes

  • •Pod query uses stern's regex matching (e.g., api-.* matches api-abc, api-xyz)
  • •Use --container for pods with sidecars to filter specific container
  • •The --no-follow flag is used automatically (no streaming)