proxmox/reports/status/execution_review_summary.md

Immediate Actions Execution Review

Date: 2026-01-20
Review of: Execution results from immediate actions

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Executive Summary

✅ Successes

1. CPU Load Reduction: ml110 CPU usage dropped from 81.5% to 39.2% (52% reduction!)
2. 7 Containers Successfully Migrated to r630-01:
   • besu-validator-1, 2, 3 (containers 1000, 1001, 1002)
   • besu-sentry-1, 2, 3 (containers 1500, 1501, 1502)
   • besu-rpc-core-1 (container 2101)
3. r630-01 Utilization: CPU usage increased from 8.2% to 12.9% (still very healthy)
4. All containers running successfully after migration

⚠️ Issues Encountered

1. Storage Incompatibility on r630-02

Problem: All 7 migrations to r630-02 failed with error:

storage 'local-lvm' is not available on node 'r630-02'

Root Cause:

• Containers on ml110 use local-lvm storage
• r630-02 has different storage pools: thin1-r630-02, thin2, thin3, thin4, thin5, thin6
• The standard pct migrate command doesn't automatically handle storage conversion

Affected Containers:

• besu-validator-4, 5 (1003, 1004)
• besu-sentry-4, ali (1503, 1504)
• besu-rpc-public-1 (2201)
• besu-rpc-ali-0x8a (2303)
• besu-rpc-thirdweb-0x8a-1 (2401)

2. thin2 Storage Migration Issue

Problem: Container 5000 (blockscout-1) migration failed due to incorrect command syntax:

Unknown option: storage
pct migrate <vmid> <target> [OPTIONS]

Root Cause: The pct migrate command doesn't support --storage flag directly. Need to use API-based migration.

Current Status:

• Container 5000 still on thin2 (200GB disk, 96% used)
• Container 6200 also on thin2 (50GB disk)
• thin2 is at 88.86% capacity (210.7GB used of 226.13GB)

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Current System State

ml110

• Before: 23 containers, 81.5% CPU usage
• After: 16 containers, 39.2% CPU usage
• Improvement: ✅ 52% CPU reduction
• Remaining High-CPU Containers:
  • besu-validator-4 (95.2% CPU) - Failed to migrate
  • besu-validator-5 (60.9% CPU) - Failed to migrate
  • besu-sentry-4 (96.8% CPU) - Failed to migrate
  • besu-sentry-ali (94.1% CPU) - Failed to migrate
  • besu-rpc-public-1 (80.0% CPU) - Failed to migrate
  • besu-rpc-ali-0x8a (93.3% CPU) - Failed to migrate
  • besu-rpc-thirdweb-0x8a-1 (94.1% CPU) - Failed to migrate

r630-01

• Before: 50 containers, 8.2% CPU usage
• After: 57 containers, 12.9% CPU usage
• Status: ✅ Healthy, well within capacity

r630-02

• Before: 7 containers, 5.3% CPU usage
• After: 7 containers, 5.3% CPU usage
• Status: ⚠️ Still underutilized - migrations failed

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Solutions Required

1. Fix r630-02 Migrations (High Priority)

Solution: Use API-based migration with storage parameter:

# Method 1: Use pvesh API
pvesh create /nodes/ml110/lxc/<vmid>/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# Method 2: Stop container, migrate, change storage
pct stop <vmid>
pct migrate <vmid> r630-02
# Then manually move storage if needed

Available Storage on r630-02:

• thin1-r630-02: 0.34% used (225.36 GiB available) ✅ Recommended
• thin3: 3.11% used (219.10 GiB available)
• thin4: 22.59% used (175.05 GiB available)
• thin5: 0.00% used (226.13 GiB available)
• thin6: 0.00% used (226.13 GiB available)

2. Fix thin2 Capacity Issue (Critical)

Containers Using thin2:

• CT 5000 (blockscout-1): 200GB disk, 96% used
• CT 6200: 50GB disk, 10% used
• Orphaned volume: vm-6201-disk-0 (50GB, 7.72% used) - may be unused

Solutions:

1. Migrate containers to free storage:

   • Use pvesh API to migrate CT 5000 to thin1-r630-02 or thin3
   • Migrate CT 6200 to available storage
   • Clean up orphaned volumes if not in use

2. Alternative: Expand thin2 storage if possible

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Recommended Next Steps

Immediate (Critical)

1. ✅ Complete r630-02 migrations using API-based method with storage parameter
2. ✅ Migrate containers from thin2 to free up capacity
3. ✅ Verify all migrations and check container health

High Priority

4. ✅ Monitor CPU usage on ml110 - should stabilize around 30-40%
5. ✅ Check container health after migrations
6. ✅ Document storage mapping for future migrations

Medium Priority

7. ✅ Investigate inactive storage pools (data/thin1 on r630-02 are node-restricted)
8. ✅ Optimize storage distribution across all nodes
9. ✅ Set up monitoring alerts for storage >80% and CPU >70%

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Migration Commands for r630-02

Using API-based Migration (Correct Method)

# On ml110 or via SSH
# For each container, use:

# besu-validator-4 (1003)
pvesh create /nodes/ml110/lxc/1003/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# besu-validator-5 (1004)
pvesh create /nodes/ml110/lxc/1004/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# besu-sentry-4 (1503)
pvesh create /nodes/ml110/lxc/1503/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# besu-sentry-ali (1504)
pvesh create /nodes/ml110/lxc/1504/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# besu-rpc-public-1 (2201)
pvesh create /nodes/ml110/lxc/2201/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# besu-rpc-ali-0x8a (2303)
pvesh create /nodes/ml110/lxc/2303/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

# besu-rpc-thirdweb-0x8a-1 (2401)
pvesh create /nodes/ml110/lxc/2401/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 1

Migrate thin2 Containers

# On r630-02
# Migrate CT 5000 (blockscout-1) to thin1-r630-02
pvesh create /nodes/r630-02/lxc/5000/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 0  # Stop first if needed

# Migrate CT 6200 to thin1-r630-02
pvesh create /nodes/r630-02/lxc/6200/migrate \
  --target r630-02 \
  --storage thin1-r630-02 \
  --online 0

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Expected Results After Completion

ml110

• CPU Usage: ~15-20% (down from 81.5%)
• Container Count: ~9 containers (down from 23)
• Status: ✅ Optimally loaded for management/light workloads

r630-01

• CPU Usage: ~15-20% (up from 8.2%)
• Container Count: ~57 containers
• Status: ✅ Well-balanced workload distribution

r630-02

• CPU Usage: ~15-20% (up from 5.3%)
• Container Count: ~14 containers (up from 7)
• Status: ✅ Better utilization of high-core CPU
• Storage: thin2 below 50% usage

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Lessons Learned

1. Storage Compatibility: Always check available storage on target node before migration
2. API vs CLI: Use pvesh API for migrations when storage conversion is needed
3. Migration Strategy: Consider two-step migration (node first, then storage) for complex scenarios
4. Verification: Always verify migrations and check container health after completion

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Report Generated: 2026-01-20
Status: Partial Success - 7/14 migrations completed successfully