# Immediate Actions Execution Review **Date:** 2026-01-20 **Review of:** Execution results from immediate actions --- ## 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 [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) --- ## 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 --- ## Solutions Required ### 1. Fix r630-02 Migrations (High Priority) **Solution:** Use API-based migration with storage parameter: ```bash # Method 1: Use pvesh API pvesh create /nodes/ml110/lxc//migrate \ --target r630-02 \ --storage thin1-r630-02 \ --online 1 # Method 2: Stop container, migrate, change storage pct stop pct migrate 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 --- ## 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% --- ## Migration Commands for r630-02 ### Using API-based Migration (Correct Method) ```bash # 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 ```bash # 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 ``` --- ## 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 --- ## 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 --- **Report Generated:** 2026-01-20 **Status:** Partial Success - 7/14 migrations completed successfully