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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>
76 lines
3.2 KiB
Markdown
76 lines
3.2 KiB
Markdown
# R630 DIMM B2 reseat procedure
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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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**Use when:** You have an alert or message to reseat DIMM B2 on one of the R630s.
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---
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## 1. Identify which R630
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| Proxmox host | IP address | Role / notable workloads |
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|--------------|-------------|---------------------------|
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| **r630-01** | 192.168.11.11 | NPMplus (10233), many infra containers (69 LXC) |
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| **r630-02** | 192.168.11.12 | besu-rpc-public-1 (2201), Blockscout (5000), Firefly, MIM (10 LXC) |
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- If the alert shows **hostname**: `r630-01` = .11, `r630-02` = .12.
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- If the alert shows **IP**: 192.168.11.11 = r630-01, 192.168.11.12 = r630-02.
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- If the alert shows **Dell service tag / iDRAC**, match that to the physical server you have labeled as r630-01 or r630-02.
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---
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## 2. Impact of taking that host down
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- **r630-01 down:** NPMplus (public proxy) and many services unreachable until host is back. Plan for a short maintenance window.
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- **r630-02 down:** Public RPC (besu-rpc-public-1), Blockscout, Firefly, MIM API unreachable until host is back.
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DIMM reseat requires **power off**. There is no live reseat for memory on R630.
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---
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## 3. Pre-maintenance (optional but recommended)
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1. **Notify** anyone using services on that host.
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2. **Optional:** Migrate or shut down VMs/containers you can move (Proxmox cluster) to reduce I/O before power off.
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3. **Optional:** Put the node in maintenance in Proxmox (Datacenter → select node → Maintenance) so the cluster doesn’t try to start resources on it during the work.
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---
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## 4. Reseat DIMM B2 – steps
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1. **Shut down the R630** (from Proxmox: shutdown the node, or from iDRAC: Power → Power Off).
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2. **Power off at the PSU** (or pull power) and wait ~30 seconds. Touch a grounded chassis part to discharge static.
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3. **Open the chassis** and locate memory. On Dell R630:
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- **B2** = channel **B**, slot **2** (see Dell R630 Owner’s Manual / memory population rules for exact slot position).
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- Slots are usually labeled on the board (e.g. A1–A4, B1–B4, etc.).
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4. **Reseat B2:**
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- Release the ejector clips at both ends of the DIMM.
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- Remove the module, then reinstall it firmly until the clips click.
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- Ensure the notch aligns and the module is fully seated.
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5. **Close the chassis**, restore power, and **power on** the server.
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6. **Verify:**
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- Enter BIOS/iDRAC and check **System Memory** (or run memory test if available).
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- Once the OS is up, from Proxmox or SSH: `ssh root@<host-ip> 'dmidecode -t memory | grep -A2 "Locator: B2"'` (or check total RAM with `free -h`) to confirm B2 is present and size is correct.
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---
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## 5. After maintenance
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1. Exit **maintenance mode** on the node in Proxmox if you used it.
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2. Confirm **pveproxy**, **pvedaemon**, **pvestatd** are active and **Web UI (8006)** is reachable.
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3. Run a quick health check:
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`./scripts/check-all-proxmox-hosts.sh`
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---
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## Quick reference
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- **r630-01:** 192.168.11.11 — NPMplus, infra (69 LXC)
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- **r630-02:** 192.168.11.12 — RPC public, Blockscout, Firefly, MIM (10 LXC)
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- **DIMM B2:** Channel B, slot 2 — power off before reseat.
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- **Health check:** `./scripts/check-all-proxmox-hosts.sh`
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