Emanuel Almeida
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- All SKILL.md files now <500 lines (avg reduction 69%) - Detailed content extracted to references/ subdirectories - Frontmatter standardised: only name + description (Anthropic standard) - New skills: brand-guidelines, spec-coauthor, report-templates, skill-creator - Design skills: anti-slop guidelines, premium-proposals reference - Removed non-standard frontmatter fields (triggers, version, author, category) Plugins affected: infraestrutura, marketing, dev-tools, crm-ops, gestao, core-tools, negocio, perfex-dev, wordpress, design-media Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
175 lines
4.1 KiB
Markdown
175 lines
4.1 KiB
Markdown
---
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name: proxmox-ha
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description: Configuracao de High Availability em cluster Proxmox -- HA Manager, fencing devices (STONITH) e failover automatico para VMs criticas.
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---
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# Proxmox HA
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Configurar High Availability (HA) em cluster Proxmox com HA Manager, fencing devices e failover automatico para VMs criticas.
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## Quando Usar
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- Configurar HA apos cluster formation (/proxmox-cluster)
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- Proteger VMs criticas com failover automatico
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- Configurar fencing devices (STONITH)
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- Definir HA groups por criticidade
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- Testar failover procedures
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## Sintaxe
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```bash
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/proxmox-ha configure --critical-vms <vm-ids> [--fencing watchdog|ipmi] [--max-relocate 2]
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```
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## Knowledge Sources
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```bash
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mcp__notebooklm__notebook_query \
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notebook_id:"276ccdde-6b95-42a3-ad96-4e64d64c8d52" \
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query:"proxmox ha high availability fencing stonith failover"
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```
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---
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## Pre-Requisitos
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**1. Cluster formado:**
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```bash
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pvecm status
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# Expected: Quorum: Active, Nodes: 2+ online
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```
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**2. Shared Storage ou Replication:**
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- **Shared storage** (NFS, Ceph): HA ideal (failover <30s)
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- **Sem shared storage**: ZFS replication ou boot time failover (~2-5min)
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**3. Fencing device configurado** - sem fencing = risco split-brain
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---
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## Workflow Completo
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### Fase 1: Fencing Configuration
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Detalhes completos das 3 opcoes (Watchdog, IPMI, Network) em: `references/fencing-configuration.md`
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**Resumo:** Watchdog para inicio, IPMI para producao, evitar network fencing.
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### Fase 2: HA Manager Configuration
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```bash
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# Verificar status
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ha-manager status
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# Expected: quorum: OK, master: <node-name> (elected), lrm: active
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```
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**Criar HA Groups por criticidade:**
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```bash
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# Critical (priority 100)
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ha-manager groupadd critical \
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--nodes "server.descomplicar.pt:100,cluster.descomplicar.pt:100"
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# Medium (priority 50)
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ha-manager groupadd medium \
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--nodes "server.descomplicar.pt:50,cluster.descomplicar.pt:50"
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# Low (priority 10)
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ha-manager groupadd low \
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--nodes "server.descomplicar.pt:10,cluster.descomplicar.pt:10"
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```
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### Fase 3: Adicionar VMs a HA
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```bash
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# VM 200 (EasyPanel Docker)
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ha-manager add vm:200 \
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--group critical \
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--max_restart 3 \
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--max_relocate 2 \
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--state started
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# VM 300 (CWP)
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ha-manager add vm:300 \
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--group critical \
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--max_restart 3 \
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--max_relocate 2 \
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--state started
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```
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**Parametros:**
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- `max_restart`: Tentativas restart no mesmo node antes de relocate
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- `max_relocate`: Maximo relocates entre nodes
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- `state started`: HA Manager garante VM esta sempre started
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```bash
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# Verificar
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ha-manager status
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```
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### Fase 4: Failover Testing
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Procedimentos detalhados de teste (shutdown clean, node crash simulado, live migration) e tuning de policies em: `references/failover-testing.md`
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### Fase 5: Production Rollout
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Abordagem faseada (low -> medium -> critical) com monitorizacao de 30 dias.
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Documentar runbook em: `06-Operacoes/Procedimentos/D7-Tecnologia/PROC-HA-Failover.md`
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---
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## Best Practices
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**Fazer:**
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- Testar failover em VMs teste ANTES production
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- Configurar fencing (watchdog minimo, IPMI ideal)
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- Monitorizar quorum 24/7
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- Documentar runbooks failover
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- Backup ANTES activar HA
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**Nao fazer:**
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- HA sem fencing (risco split-brain)
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- max_relocate muito alto (VM fica "bouncing")
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- Assumir instant failover sem shared storage
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- Testar failover em production sem plano
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---
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## Troubleshooting
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### VM nao failover
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```bash
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ha-manager status | grep vm:ID
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pvecm status
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journalctl -u pve-ha-crm -f
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```
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### Split-brain detected
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```bash
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# Shutdown 1 node completamente
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systemctl poweroff
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# No node restante:
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pvecm expected 1 # Force quorum com 1 node
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# Resolver networking, rejoin node shutdown
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```
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### Failover loop (VM keeps restarting)
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```bash
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# Pause HA temporario
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ha-manager set vm:ID --state disabled
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# Fix VM issue
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# Re-enable HA
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ha-manager set vm:ID --state started
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```
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---
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## References
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- `references/fencing-configuration.md` - Detalhes Watchdog, IPMI e Network fencing
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- `references/failover-testing.md` - Testes, policies, monitoring, alertas, production rollout
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- **NotebookLM:** 276ccdde-6b95-42a3-ad96-4e64d64c8d52
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- **HA Manager Docs:** https://pve.proxmox.com/pve-docs/ha-manager.1.html
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- **Fencing:** https://pve.proxmox.com/wiki/Fencing
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