SlideShare a Scribd company logo
MONITORING
KUBERNETES WITH
PROMETHEUS
VISHWANATH SHANKAR
MYSELF
• Developer at GE
• Twitter: @svishwa787
• LinkedIn: https://www.linkedin.com/in/vishwanath-shankar-8233418/
• GitHub: https://github.com/VishwanathShankar
• Email: Vishwa.s787@gmail.com
MONITORING
• What is monitoring.
• 20 Rs story.
PROMETHEUS
• A monitoring and alerting system.
• Inspired by Google's Borgmon.
• Started by Soundcloud in 2012.
• Open source, now part of CNCF.
• Simple text-based format (Open metrics).
• Multidimensional data model.
• Rich, concise query language
PROMETHEUS
ARCHITECTURE
METRICS
FORMAT
DATA MODEL
• <identifier> -> [(t0, v0), (t1, v1) ……]
• Timestamp are in milliseconds and values are in floats
• E.g container_tasks_state{id="/",state="running"} 20
• Queries
• PromQL: container_tasks_state{state=“running”}
EXPORTER – PROMETHEUS CONFIG
• E.g. Kube-state-metrics – Prometheus setup
Kubernetes
PrometheusKube-state-
metrics
EXPORTER –
PROMETHEUS CONFIG
• Sample Prometheus yml fle
PROMETHEUS
CONFIG FILE
TARGET
CHECK
MOST USEFUL
QUERIES IN
REAL TIME
Deployments with
issues:
kube_deployment_spec_repl
icas !=
kube_deployment_status_re
plicas_available
If the pod is
restarting too often:
rate(kube_pod_container_st
atus_restarts_total[15m]) > 0
Top 10 longest
running pods:
topk(10, sort_desc(time() -
kube_pod_created))
MONITORING
STRATEGIES
• USE method
• For every resource, check
utilization, saturation, and
errors.

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Monitoring kubernetes with prometheus