From 4e78b8cc475b9be08e092f66dc01ff5413fefb3f Mon Sep 17 00:00:00 2001
From: admin <admin@thedevops.dev>
Date: Tue, 6 Jan 2026 07:41:12 +0000
Subject: [PATCH] Update resource _using.md

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+# 🔥 Kubernetes Resource Usage Report 2026/01/06
+
+## 💾 TOP 10 MEMORY CONSUMERS
+
+| Rank | Namespace | Pod Name | Memory |
+|------|-----------|----------|--------|
+| 1 | jenkins | jenkins-6fc54b66d5-dg6h9 | **1361Mi** 🔥 |
+| 2 | monitoring | prometheus-k8s-monitoring-kube-promet-prometheus-0 | **1011Mi** |
+| 3 | longhorn-system | instance-manager-d615ed1c3a0e53d6a8ab21533bc5d628 | **600Mi** |
+| 4 | longhorn-system | instance-manager-30e7dd49f715bfdb9ae030c0e2b45bbf | **599Mi** |
+| 5 | longhorn-system | instance-manager-adf5b54f2ad6e50eb3987b8dc9bd1d52 | **559Mi** |
+| 6 | calibre-web | calibre-web-58b6bc49fd-msmgz | **317Mi** |
+| 7 | monitoring | k8s-monitoring-grafana-b4c85bb7c-b4v8x | **313Mi** |
+| 8 | argocd | argocd-application-controller-0 | **210Mi** |
+| 9 | longhorn-system | longhorn-manager-sbqhd | **176Mi** |
+| 10 | longhorn-system | longhorn-manager-l4sj6 | **178Mi** |
+
+---
+
+## 🔥 TOP 10 CPU CONSUMERS
+
+| Rank | Namespace | Pod Name | CPU |
+|------|-----------|----------|-----|
+| 1 | monitoring | prometheus-k8s-monitoring-kube-promet-prometheus-0 | **199m** 🔥 |
+| 2 | longhorn-system | instance-manager-d615ed1c3a0e53d6a8ab21533bc5d628 | **125m** |
+| 3 | longhorn-system | instance-manager-30e7dd49f715bfdb9ae030c0e2b45bbf | **83m** |
+| 4 | longhorn-system | instance-manager-adf5b54f2ad6e50eb3987b8dc9bd1d52 | **65m** |
+| 5 | argocd | argocd-application-controller-0 | **38m** |
+| 6 | longhorn-system | longhorn-manager-sbqhd | **28m** |
+| 7 | longhorn-system | longhorn-manager-mgpgj | **26m** |
+| 8 | loki | promtail-qh9n9 | **26m** |
+| 9 | loki | promtail-7fl7h | **25m** |
+| 10 | gitea | gitea-valkey-cluster-2 | **24m** |
+
+---
+
+## 📊 SUMMARY BY NAMESPACE
+
+| Namespace | Pods | Total Memory | Avg Memory per Pod |
+|-----------|------|--------------|-------------------|
+| jenkins | 1 | **1361Mi** 🔥 | 1361Mi |
+| monitoring | 5 | **1391Mi** | 278Mi |
+| longhorn-system | 32 | **2577Mi** | 81Mi |
+| argocd | 7 | **371Mi** | 53Mi |
+| gitea | 4 | **167Mi** | 42Mi |
+| calibre-web | 1 | **317Mi** | 317Mi |
+| loki | 4 | **296Mi** | 74Mi |
+| default | 5 | **238Mi** | 48Mi |
+
+---
+
+## 🎯 KEY INSIGHTS
+
+### Jenkins (Biggest Consumer!)
+```
+Pod: jenkins-6fc54b66d5-dg6h9
+Memory: 1361Mi (1.3 GB!)
+CPU: 3m (low)
+
+💡 Причина: 
+- Jenkins хранит build history в памяти
+- Загружены плагины
+- Кэш workspace
+```
+
+### Prometheus (Second Biggest)
+```
+Pod: prometheus-k8s-monitoring-kube-promet-prometheus-0
+Memory: 1011Mi (1 GB)
+CPU: 199m (highest CPU usage!)
+
+💡 Причина:
+- Хранит метрики в памяти
+- Time series database
+- Retention period
+```
+
+### Longhorn (Distributed Storage)
+```
+Total Memory: ~2.5GB across 32 pods
+Average: 81Mi per pod
+
+💡 Причина:
+- 3 instance managers (по ~600Mi каждый)
+- Storage management overhead
+- Replica data
+```
+
+---
+
+## ⚠️ RECOMMENDATIONS
+
+### 1. Jenkins Memory Optimization
+
+**Current:** 1361Mi  
+**Recommended:** Set limits
+
+```yaml
+# apps/jenkins/deployment.yaml
+resources:
+  limits:
+    memory: 2Gi
+    cpu: 1000m
+  requests:
+    memory: 1536Mi
+    cpu: 500m
+```
+
+**Actions:**
+- Configure max build history
+- Clean old workspaces
+- Limit concurrent builds
+
+---
+
+### 2. Prometheus Memory Optimization
+
+**Current:** 1011Mi  
+**Recommended:** Adjust retention
+
+```yaml
+# Reduce retention period
+prometheus:
+  retention: 7d  # Down from 15d
+  retentionSize: 10GB
+```
+
+---
+
+### 3. Longhorn Optimization
+
+**Current:** ~600Mi per instance manager  
+**Status:** Normal for distributed storage
+
+No action needed - this is expected for Longhorn.
+
+---
+
+## 📈 MONITORING COMMANDS
+
+### Watch top consumers:
+```bash
+watch -n 5 kubectl top pods --all-namespaces --sort-by=memory
+```
+
+### Check specific namespace:
+```bash
+kubectl top pods -n jenkins
+kubectl top pods -n monitoring
+kubectl top pods -n longhorn-system
+```
+
+### Check nodes:
+```bash
+kubectl top nodes
+```
+
+### Get detailed metrics:
+```bash
+# Pod metrics
+kubectl get --raw /apis/metrics.k8s.io/v1beta1/namespaces/jenkins/pods/jenkins-6fc54b66d5-dg6h9 | jq
+
+# Node metrics
+kubectl get --raw /apis/metrics.k8s.io/v1beta1/nodes | jq
+```
+
+---
+
+## 🎯 QUICK WINS
+
+1. ✅ **Add resource limits** to Jenkins
+2. ✅ **Reduce Prometheus retention** if needed
+3. ✅ **Monitor trends** in Grafana
+4. ⏳ **Consider HPA** for auto-scaling
+5. ⏳ **Add alerts** for high memory usage
+
+---
+
+## 📊 CURRENT CLUSTER CAPACITY
+
+Run `kubectl top nodes` to see:
+```
+NAME      CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%
+master1   ???m         ??%    ????Mi          ??%
+master2   ???m         ??%    ????Mi          ??%
+master3   ???m         ??%    ????Mi          ??%
+```
+
+---
+
+**Jenkins is your biggest memory consumer!** 🔥  
+Consider adding resource limits and cleanup policies.
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