Validator Upgrade Runbook

This runbook targets production validators moving between Sei releases (e.g., v6.1.10 → v6.1.11). Follow the steps sequentially to ensure consensus safety and to confirm new behaviours-such as the gasUsed corrections from sei-chain@1efdec1eb-are live.

1. Pre-flight

Sync status	`seid status \| jq .SyncInfo.catching_up` returns `false`.
Height checkpoint	`seid status \| jq .SyncInfo.latest_block_height` → record for post-upgrade comparison.
Snapshot	`seidadmin snapshot create --output /var/sei/snapshots/YYYYMMDD` (or provider-specific tooling). Store hashes off-host.
Peer health	Verify sentry/full-node connectivity; capture `~/.sei/config/peers` in case of rollback.
Gas baseline	`curl -s localhost:8545 ... eth_getBlockByNumber latest true` and store `gasUsed` for post-upgrade validation.

Ensure systemd unit files or process managers are ready; upgrades should be performed during low network activity and coordinated with fellow validators when possible.

2. Fetch & Verify Binary

Download the release tarball or build from source at the tagged commit.

Verify checksum:


sha256sum seid-v6.1.11-linux-amd64.tar.gz

Extract and replace the binary:


tar -xzf seid-v6.1.11-linux-amd64.tar.gz
sudo mv seid /usr/local/bin/seid

Confirm version:
```
seid version --long
```
Expect name: sei-chain, version: v6.1.11, and commit hash matching the release (1efdec1eb...).

3. Rolling Restart

⚠️

Never restart all validators concurrently. Stagger restarts to preserve liveness.

Stop the validator process (systemctl stop seid or equivalent).
Apply configuration changes if required (e.g., raise mempool.cache_size alongside sei-tendermint@02c9462f1).

Start the process and tail logs:


journalctl -u seid -f --since "5 minutes ago"

Wait for the node to catch up to network height (check SyncInfo.catching_up).
Repeat for sentries and remaining infrastructure.

4. Post-Upgrade Validation

Run these checks immediately after the validator resumes signing:

Consensus height increases and matches peers.

GasUsed correctness:


curl -s http://localhost:8545 \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_getBlockByNumber","params":["latest", true]}' \
  | jq '.result.gasUsed'

Confirm the value equals the sum of constituent receipts.

Duplicate-tx cache: If increasing mempool.cache_size, run seid debug mempool-stats (or inspect metrics) to ensure the cache size aligns with the new limit.
Signer health: Inspect logs for Committed state and absence of panic messages.

5. Rollback Plan

If anomalies arise:

Stop the upgraded binary.
Restore the previous binary from backup (/usr/local/bin/seid-prev).
Restore the snapshot taken in the pre-flight stage if state corruption is suspected.
Rejoin consensus and communicate the rollback to peers.

6. Document the Upgrade

Record block height of the upgrade, commit hash, and any configuration changes in your ops log.
Archive the binary and checksums for audit purposes.
Update your monitoring dashboards to reflect new metrics if applicable.