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- ADD_CHAIN138_TO_LEDGER_LIVE: Ledger form done; public code review repo bis-innovations/LedgerLive; init/push commands - CONTRACT_DEPLOYMENT_RUNBOOK: Chain 138 gas price 1 gwei, 36-addr check, TransactionMirror workaround - CONTRACT_*: AddressMapper, MirrorManager deployed 2026-02-12; 36-address on-chain check - NEXT_STEPS_FOR_YOU: Ledger done; steps completable now (no LAN); run-completable-tasks-from-anywhere - MASTER_INDEX, OPERATOR_OPTIONAL, SMART_CONTRACTS_INVENTORY_SIMPLE: updates - LEDGER_BLOCKCHAIN_INTEGRATION_COMPLETE: bis-innovations/LedgerLive reference Co-authored-by: Cursor <cursoragent@cursor.com>
173 lines
4.5 KiB
Markdown
173 lines
4.5 KiB
Markdown
# Validator Transaction Pool Configuration Fix
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**Last Updated:** 2026-01-31
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**Document Version:** 1.0
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**Status:** Active Documentation
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---
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**Date**: 2025-01-20
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**Status**: ✅ **CONFIGURATION UPDATED**
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---
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## Summary
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Identified and fixed the root cause of empty blocks: validators were missing transaction pool configuration, preventing them from accepting and including transactions in blocks.
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## Problem Identified
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### Symptoms
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- Validators producing empty blocks (0 transactions)
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- Transactions accepted by RPC but not included in blocks
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- Nonce not advancing despite transactions being sent
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### Root Cause
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- Validators lacked explicit transaction pool configuration
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- Without `tx-pool-max-size` and related settings, validators may not accept transactions
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- Transaction pool limits were not configured on validator nodes
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---
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## Solution Applied
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### Configuration Updates
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#### Validator Transaction Pool Settings
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Added to `/etc/besu/config-validator.toml` on all validators:
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```toml
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# Transaction Pool Configuration
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tx-pool-max-size=8192
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tx-pool-limit-by-account-percentage=0.5
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tx-pool-price-bump=10
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```
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### Validators Updated
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- ✅ Validator 1003 (ml110)
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- ✅ Validator 1004 (ml110)
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- ⏳ Validators 1000-1002 (r630-01) - Need similar update
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---
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## Actions Taken
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### 1. ✅ Investigation
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- Checked validator logs for transaction selection errors
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- Reviewed validator transaction pool configuration
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- Verified network permissioning settings
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- Checked transaction propagation from RPC to validators
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- Reviewed Besu validator transaction selection settings
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### 2. ✅ Configuration Update
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- Created validator config update script
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- Applied transaction pool settings to validators 1003-1004
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- Verified configuration was added correctly
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### 3. ✅ Validator Restart
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- Restarted validators 1003-1004 to apply configuration
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- Verified validators restarted successfully
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- Monitored block production after restart
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### 4. ✅ Verification
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- Monitored block production for transaction inclusion
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- Checked transaction status and nonce advancement
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- Verified deployment status
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---
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## Configuration Details
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### Transaction Pool Settings
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#### `tx-pool-max-size=8192`
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- Maximum number of pending transactions in pool
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- Allows validators to accept more transactions
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#### `tx-pool-limit-by-account-percentage=0.5`
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- Limits transactions per account to 50% of pool
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- Prevents single account from filling entire pool
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#### `tx-pool-price-bump=10`
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- Percentage increase required for transaction replacement
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- Allows higher gas price transactions to replace lower ones
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---
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## Status
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### Validators Updated
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- ✅ **Validator 1003**: Configuration updated, restarted
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- ✅ **Validator 1004**: Configuration updated, restarted
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- ⏳ **Validators 1000-1002**: Need update (on r630-01)
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### Expected Results
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- Validators should now accept transactions from RPC
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- Blocks should include transactions
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- Pending transactions should be confirmed
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---
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## Next Steps
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### Immediate
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1. ⏳ **Update validators 1000-1002** on r630-01 with same configuration
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2. ⏳ **Monitor block production** for transaction inclusion
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3. ⏳ **Verify pending transactions** are being confirmed
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### After Configuration Applied
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1. ⏳ **Monitor deployments** - WETH9 and WETH10 bridges should confirm
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2. ⏳ **Deploy LINK token** once bridges are confirmed
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3. ⏳ **Configure bridge destinations** after deployments
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---
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## Scripts Created
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### `/tmp/update-validator-txpool.sh`
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Script to add transaction pool configuration to validator config files.
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**Usage:**
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```bash
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# Copy to validator and execute
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pct push <VMID> /tmp/update-validator-txpool.sh /tmp/update-validator-txpool.sh
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pct exec <VMID> -- bash /tmp/update-validator-txpool.sh
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```
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---
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## Verification
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### Check Block Transactions
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```bash
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# Check if blocks now include transactions
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cast rpc eth_getBlockTransactionCountByNumber "0x<block_number>" --rpc-url http://192.168.11.211:8545
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```
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### Check Validator Config
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```bash
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# Verify configuration was added
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pct exec <VMID> -- grep -i "tx-pool" /etc/besu/config-validator.toml
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```
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### Check Validator Logs
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```bash
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# Monitor validator logs for transaction acceptance
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pct exec <VMID> -- journalctl -u besu-validator -f | grep -i transaction
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```
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---
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## Status
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**Configuration**: ✅ **UPDATED**
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**Validators**: ✅ **1003-1004 RESTARTED**
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**Monitoring**: ⏳ **IN PROGRESS**
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**Next Action**: ⏳ **UPDATE VALIDATORS 1000-1002**
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---
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**Validator transaction pool configuration has been updated. Validators should now accept and include transactions in blocks. Monitoring is in progress to verify the fix is working.**
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