# Command Reference Guide

**Document Version:** 1.0
**Last Updated:** 2025-12-10

## Table of Contents

- [PXE Server Operations](#pxe-server-operations)
- [Image Building](#image-building)
- [Node Provisioning](#node-provisioning)
- [Cluster Management](#cluster-management)
- [Service Management](#service-management)
- [Health Checks](#health-checks)
- [BMC/IPMI Operations](#bmcipmi-operations)
- [Network Diagnostics](#network-diagnostics)
- [Log Querying](#log-querying)
- [Backup and Restore](#backup-and-restore)

## PXE Server Operations

### Start/Stop Services

```bash
# Start all PXE services
sudo systemctl start dhcpd4.service atftpd.service nginx.service

# Stop all PXE services
sudo systemctl stop dhcpd4.service atftpd.service nginx.service

# Restart all PXE services
sudo systemctl restart dhcpd4.service atftpd.service nginx.service

# Enable services at boot
sudo systemctl enable dhcpd4.service atftpd.service nginx.service

# Check status
sudo systemctl status dhcpd4.service
sudo systemctl status atftpd.service
sudo systemctl status nginx.service
```

### DHCP Server Management

```bash
# Test DHCP configuration syntax
sudo dhcpd -t -cf /etc/dhcp/dhcpd.conf

# View DHCP leases
sudo cat /var/lib/dhcp/dhcpd.leases

# Watch DHCP leases in real-time
sudo tail -f /var/lib/dhcp/dhcpd.leases

# View DHCP server logs
sudo journalctl -u dhcpd4.service -f

# Check DHCP server is listening
sudo ss -ulnp | grep :67

# Send DHCP discover (from client)
sudo nmap --script broadcast-dhcp-discover -e eth0
```

### TFTP Server Management

```bash
# Test TFTP download locally
tftp localhost -c get undionly.kpxe /tmp/test.kpxe

# Test TFTP from remote host
tftp 10.0.100.10 -c get ipxe.efi /tmp/test.efi

# Check TFTP server is listening
sudo ss -ulnp | grep :69

# View TFTP logs
sudo journalctl -u atftpd.service -f

# Monitor TFTP traffic
sudo tcpdump -i eth0 -n port 69 -vv

# List TFTP root directory
ls -lh /var/lib/tftpboot/
```

### HTTP Server Management

```bash
# Test HTTP server
curl http://localhost:8080/health

# Test boot script availability
curl http://localhost:8080/boot/ipxe/boot.ipxe

# Test netboot image availability
curl -I http://localhost:8080/boot/nixos/control-plane/bzImage

# Check nginx configuration syntax
sudo nginx -t

# Reload nginx configuration (without restart)
sudo nginx -s reload

# View nginx access logs
sudo tail -f /var/log/nginx/access.log

# View nginx error logs
sudo tail -f /var/log/nginx/error.log

# Monitor HTTP traffic
sudo tcpdump -i eth0 -n port 80 or port 8080 -A | grep -E "GET|POST|HTTP"
```

### PXE Boot Debugging

```bash
# Monitor all PXE-related traffic
sudo tcpdump -i eth0 -n '(port 67 or port 68 or port 69 or port 80)' -vv

# Watch for DHCP discover packets
sudo tcpdump -i eth0 -n 'udp port 67 or udp port 68' -vv

# Watch for specific MAC address
sudo tcpdump -i eth0 -n 'ether host 52:54:00:12:34:56'

# Check PXE server health
curl http://10.0.100.10:8080/health | jq

# View comprehensive logs (all services)
sudo journalctl -u dhcpd4 -u atftpd -u nginx -f --since "5 minutes ago"
```

## Image Building

### Build Netboot Images

```bash
# Build all profiles
cd /home/centra/cloud/baremetal/image-builder
./build-images.sh

# Build specific profile
./build-images.sh --profile control-plane
./build-images.sh --profile worker
./build-images.sh --profile all-in-one

# Build and deploy to PXE server
./build-images.sh --deploy

# Build with custom output directory
./build-images.sh --output-dir /srv/pxe/images

# Build with verbose output
./build-images.sh --verbose
```

### Manual Nix Builds

```bash
# Build initrd
nix build .#nixosConfigurations.netboot-control-plane.config.system.build.netbootRamdisk

# Build kernel
nix build .#nixosConfigurations.netboot-control-plane.config.system.build.kernel

# Build complete system
nix build .#nixosConfigurations.netboot-control-plane.config.system.build.toplevel

# Check build artifacts
ls -lh result/

# Copy artifacts manually
sudo cp result/bzImage /var/lib/pxe-boot/nixos/control-plane/
sudo cp result/initrd /var/lib/pxe-boot/nixos/control-plane/
```

### Image Verification

```bash
# Check image sizes
ls -lh /var/lib/pxe-boot/nixos/*/

# Verify bzImage is a valid kernel
file /var/lib/pxe-boot/nixos/control-plane/bzImage
# Expected: Linux kernel x86 boot executable ...

# Verify initrd is compressed
file /var/lib/pxe-boot/nixos/control-plane/initrd
# Expected: gzip compressed data ...

# Check HTTP accessibility
curl -I http://10.0.100.10:8080/boot/nixos/control-plane/bzImage
# Expected: HTTP/1.1 200 OK

# Calculate checksums
sha256sum /var/lib/pxe-boot/nixos/control-plane/{bzImage,initrd}
```

## Node Provisioning

### nixos-anywhere Commands

```bash
# Basic provisioning
nix run github:nix-community/nixos-anywhere -- \
  --flake /srv/provisioning#node01 \
  root@10.0.100.50

# Provision with remote build (faster on slow local machine)
nix run github:nix-community/nixos-anywhere -- \
  --flake /srv/provisioning#node01 \
  --build-on-remote \
  root@10.0.100.50

# Provision with disk encryption
nix run github:nix-community/nixos-anywhere -- \
  --flake /srv/provisioning#node01 \
  --disk-encryption-keys /tmp/luks.key <(cat /srv/provisioning/secrets/node01-luks.key) \
  root@10.0.100.50

# Debug mode (verbose output, no reboot)
nix run github:nix-community/nixos-anywhere -- \
  --flake /srv/provisioning#node01 \
  --debug \
  --no-reboot \
  root@10.0.100.50

# Use specific SSH key
nix run github:nix-community/nixos-anywhere -- \
  --flake /srv/provisioning#node01 \
  --ssh-key ~/.ssh/id_ed25519_provisioning \
  root@10.0.100.50

# Use specific Nix binary
nix run github:nix-community/nixos-anywhere -- \
  --flake /srv/provisioning#node01 \
  --nix-path /run/current-system/sw/bin/nix \
  root@10.0.100.50
```

### Batch Provisioning

```bash
# Provision multiple nodes in parallel
for node in node01 node02 node03; do
  nix run github:nix-community/nixos-anywhere -- \
    --flake /srv/provisioning#${node} \
    --build-on-remote \
    root@<node-ip> &
done
wait
echo "All nodes provisioned"

# Provision with logging
for node in node01 node02 node03; do
  nix run github:nix-community/nixos-anywhere -- \
    --flake /srv/provisioning#${node} \
    root@<node-ip> 2>&1 | tee /var/log/provision-${node}.log &
done
wait
```

### SSH to Installer

```bash
# SSH to PXE-booted installer
ssh root@10.0.100.50

# Check available disks
ssh root@10.0.100.50 'lsblk'

# Check network configuration
ssh root@10.0.100.50 'ip addr show'

# Check internet connectivity
ssh root@10.0.100.50 'ping -c 3 cache.nixos.org'

# Manual disk wipe (if needed)
ssh root@10.0.100.50 'wipefs -a /dev/sda && sgdisk --zap-all /dev/sda'

# Test disko configuration
ssh root@10.0.100.50 'nix-shell -p disko --run "disko --mode test /tmp/disko.nix"'
```

## Cluster Management

### Cluster Member Operations

```bash
# List cluster members (Chainfire)
curl -k https://node01.example.com:2379/admin/cluster/members | jq

# List cluster members (FlareDB)
curl -k https://node01.example.com:2479/admin/cluster/members | jq

# Get cluster leader
curl -k https://node01.example.com:2379/admin/cluster/leader | jq

# Get cluster status
curl -k https://node01.example.com:2379/admin/cluster/status | jq
```

### Add Node to Cluster

```bash
# Add member to Chainfire cluster
curl -k -X POST https://node01.example.com:2379/admin/member/add \
  -H "Content-Type: application/json" \
  -d '{
    "id": "node04",
    "raft_addr": "10.0.200.13:2380"
  }'

# Add member to FlareDB cluster
curl -k -X POST https://node01.example.com:2479/admin/member/add \
  -H "Content-Type: application/json" \
  -d '{
    "id": "node04",
    "raft_addr": "10.0.200.13:2480"
  }'
```

### Remove Node from Cluster

```bash
# Remove member from Chainfire cluster
curl -k -X DELETE https://node01.example.com:2379/admin/member/node04

# Remove member from FlareDB cluster
curl -k -X DELETE https://node01.example.com:2479/admin/member/node04

# Verify removal
curl -k https://node01.example.com:2379/admin/cluster/members | jq '.members[] | select(.id=="node04")'
# Expected: empty (no output)
```

### Cluster Health Checks

```bash
# Check all nodes health (Chainfire)
for node in node01 node02 node03; do
  echo "$node:"
  curl -k https://${node}.example.com:2379/health | jq -c
done

# Check cluster has quorum
MEMBER_COUNT=$(curl -sk https://node01.example.com:2379/admin/cluster/members | jq '.members | length')
echo "Cluster has $MEMBER_COUNT members"
if [ $MEMBER_COUNT -ge 2 ]; then
  echo "Quorum achieved"
else
  echo "WARNING: No quorum"
fi

# Check Raft leader exists
LEADER=$(curl -sk https://node01.example.com:2379/admin/cluster/leader | jq -r '.id')
if [ -n "$LEADER" ]; then
  echo "Leader: $LEADER"
else
  echo "ERROR: No leader elected"
fi
```

## Service Management

### Systemd Service Control

```bash
# Start service
sudo systemctl start chainfire.service

# Stop service
sudo systemctl stop chainfire.service

# Restart service
sudo systemctl restart chainfire.service

# Reload configuration (without restart)
sudo systemctl reload chainfire.service

# Enable service at boot
sudo systemctl enable chainfire.service

# Disable service at boot
sudo systemctl disable chainfire.service

# Check service status
sudo systemctl status chainfire.service

# View service dependencies
sudo systemctl list-dependencies chainfire.service
```

### Multi-Service Operations

```bash
# Start all PlasmaCloud services
sudo systemctl start chainfire.service flaredb.service iam.service \
  plasmavmc.service prismnet.service flashdns.service

# Stop all PlasmaCloud services
sudo systemctl stop chainfire.service flaredb.service iam.service \
  plasmavmc.service prismnet.service flashdns.service

# Check status of all services
systemctl status 'chainfire.service' 'flaredb.service' 'iam.service' \
  'plasmavmc.service' 'prismnet.service' 'flashdns.service' --no-pager

# Restart services in order
sudo systemctl restart chainfire.service && sleep 10
sudo systemctl restart flaredb.service && sleep 10
sudo systemctl restart iam.service
```

### NixOS Configuration Management

```bash
# Build new configuration (test)
sudo nixos-rebuild test --flake /srv/provisioning#node01

# Build and apply new configuration
sudo nixos-rebuild switch --flake /srv/provisioning#node01

# Build and set as boot default (no activation)
sudo nixos-rebuild boot --flake /srv/provisioning#node01

# Rollback to previous generation
sudo nixos-rebuild switch --rollback

# List generations
sudo nixos-rebuild list-generations

# Boot into specific generation (next boot only)
sudo nixos-rebuild boot --switch-generation 3

# Delete old generations
sudo nix-collect-garbage --delete-older-than 30d
```

## Health Checks

### Service Health Endpoints

```bash
# Chainfire health
curl -k https://node01.example.com:2379/health | jq

# FlareDB health
curl -k https://node01.example.com:2479/health | jq

# IAM health
curl -k https://node01.example.com:8080/health | jq

# PlasmaVMC health
curl -k https://node01.example.com:9090/health | jq

# PrismNET health
curl -k https://node01.example.com:9091/health | jq

# FlashDNS health (via HTTP)
curl -k https://node01.example.com:853/health | jq

# FiberLB health
curl -k https://node01.example.com:9092/health | jq

# K8sHost health
curl -k https://node01.example.com:10250/healthz
```

### Comprehensive Health Check Script

```bash
#!/bin/bash
# /srv/provisioning/scripts/health-check-all.sh

NODES=("node01" "node02" "node03")
SERVICES=("2379:Chainfire" "2479:FlareDB" "8080:IAM" "9090:PlasmaVMC")

for node in "${NODES[@]}"; do
  echo "Checking $node..."
  for service in "${SERVICES[@]}"; do
    port=$(echo $service | cut -d: -f1)
    name=$(echo $service | cut -d: -f2)

    status=$(curl -sk https://${node}.example.com:${port}/health | jq -r '.status' 2>/dev/null)
    if [ "$status" = "healthy" ]; then
      echo "  ✓ $name: healthy"
    else
      echo "  ✗ $name: unhealthy or unreachable"
    fi
  done
  echo ""
done
```

### System Health Checks

```bash
# Check system load
ssh root@node01.example.com 'uptime'

# Check memory usage
ssh root@node01.example.com 'free -h'

# Check disk usage
ssh root@node01.example.com 'df -h'

# Check disk I/O
ssh root@node01.example.com 'iostat -x 1 5'

# Check network bandwidth
ssh root@node01.example.com 'iftop -i eth1 -t -s 5'

# Check process list
ssh root@node01.example.com 'ps aux --sort=-%mem | head -20'

# Check for OOM kills
ssh root@node01.example.com 'dmesg | grep -i "out of memory"'
```

## BMC/IPMI Operations

### Power Control

```bash
# Power on
ipmitool -I lanplus -H 10.0.10.50 -U admin -P password chassis power on

# Power off (graceful)
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis power soft

# Power off (force)
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis power off

# Power cycle
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis power cycle

# Power status
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis power status
```

### Boot Device Control

```bash
# Set next boot to PXE
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis bootdev pxe

# Set next boot to disk
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis bootdev disk

# Set next boot to CDROM
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis bootdev cdrom

# Set persistent PXE boot (all future boots)
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis bootdev pxe options=persistent

# Clear persistent boot device
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis bootdev none
```

### Serial-over-LAN (SOL)

```bash
# Activate SOL session
ipmitool -I lanplus -H 10.0.10.50 -U admin sol activate

# Deactivate SOL session (from another terminal)
ipmitool -I lanplus -H 10.0.10.50 -U admin sol deactivate

# Configure SOL settings
ipmitool -I lanplus -H 10.0.10.50 -U admin sol set enabled true 1
ipmitool -I lanplus -H 10.0.10.50 -U admin sol set volatile-bit-rate 115.2 1

# View SOL configuration
ipmitool -I lanplus -H 10.0.10.50 -U admin sol info 1
```

### System Information

```bash
# Get sensor readings
ipmitool -I lanplus -H 10.0.10.50 -U admin sdr list

# Get specific sensor
ipmitool -I lanplus -H 10.0.10.50 -U admin sdr get "CPU Temp"

# Get system event log
ipmitool -I lanplus -H 10.0.10.50 -U admin sel list

# Clear system event log
ipmitool -I lanplus -H 10.0.10.50 -U admin sel clear

# Get BMC info
ipmitool -I lanplus -H 10.0.10.50 -U admin bmc info

# Get FRU (Field Replaceable Unit) info
ipmitool -I lanplus -H 10.0.10.50 -U admin fru print
```

### Batch Operations

```bash
# Power on all nodes
for ip in 10.0.10.{50..55}; do
  echo "Powering on $ip..."
  ipmitool -I lanplus -H $ip -U admin -P password chassis power on
done

# Check power status all nodes
for ip in 10.0.10.{50..55}; do
  echo -n "$ip: "
  ipmitool -I lanplus -H $ip -U admin -P password chassis power status
done

# Set all nodes to PXE boot
for ip in 10.0.10.{50..55}; do
  echo "Setting $ip to PXE boot..."
  ipmitool -I lanplus -H $ip -U admin -P password chassis bootdev pxe options=persistent
done
```

## Network Diagnostics

### Connectivity Tests

```bash
# Ping test
ping -c 5 node01.example.com

# TCP port test
nc -zv node01.example.com 2379

# TCP port test with timeout
timeout 5 bash -c '</dev/tcp/node01.example.com/2379' && echo "Port open" || echo "Port closed"

# Multiple port test
for port in 2379 2380 2479 2480 8080; do
  nc -zv node01.example.com $port
done

# DNS resolution test
dig node01.example.com
dig -x 10.0.200.10

# Route test
traceroute node01.example.com

# MTU test
ping -M do -s 1472 -c 5 node01.example.com
```

### Bandwidth Tests

```bash
# iperf3 server (on target node)
ssh root@node02.example.com 'iperf3 -s -D'

# iperf3 client (from source node)
ssh root@node01.example.com 'iperf3 -c node02.example.com -t 10'

# iperf3 bidirectional test
ssh root@node01.example.com 'iperf3 -c node02.example.com -t 10 --bidir'

# iperf3 UDP test
ssh root@node01.example.com 'iperf3 -c node02.example.com -u -b 10G -t 10'
```

### Packet Capture

```bash
# Capture all traffic on interface
ssh root@node01.example.com 'tcpdump -i eth1 -w /tmp/capture.pcap -c 1000'

# Capture specific port
ssh root@node01.example.com 'tcpdump -i eth1 port 2379 -w /tmp/chainfire.pcap'

# Capture and display
ssh root@node01.example.com 'tcpdump -i eth1 port 2379 -A -vv'

# Capture with filters
ssh root@node01.example.com 'tcpdump -i eth1 "tcp port 2379 and host node02.example.com" -vv'

# Download capture file
scp root@node01.example.com:/tmp/capture.pcap ./
```

### Firewall Diagnostics

```bash
# List all firewall rules
ssh root@node01.example.com 'iptables -L -n -v'

# List specific chain
ssh root@node01.example.com 'iptables -L INPUT -n -v'

# Check if port is allowed
ssh root@node01.example.com 'iptables -L -n | grep 2379'

# Test firewall rule (temporarily add)
ssh root@node01.example.com 'iptables -I INPUT -p tcp --dport 2379 -j ACCEPT'

# Count packets on specific rule
ssh root@node01.example.com 'iptables -L INPUT -n -v | grep 2379'
```

## Log Querying

### Journalctl Commands

```bash
# View logs for specific service
sudo journalctl -u chainfire.service

# Follow logs in real-time
sudo journalctl -u chainfire.service -f

# View logs from current boot
sudo journalctl -u chainfire.service -b

# View logs from previous boot
sudo journalctl -u chainfire.service -b -1

# View logs from specific time range
sudo journalctl -u chainfire.service --since "2025-12-10 10:00" --until "2025-12-10 11:00"

# View logs from last hour
sudo journalctl -u chainfire.service --since "1 hour ago"

# View last N lines
sudo journalctl -u chainfire.service -n 100

# View logs in JSON format
sudo journalctl -u chainfire.service -o json

# View logs with no pager
sudo journalctl -u chainfire.service --no-pager

# Search for keyword
sudo journalctl -u chainfire.service | grep "error"

# Show logs from multiple services
sudo journalctl -u chainfire.service -u flaredb.service -f
```

### Log Analysis

```bash
# Count error messages
sudo journalctl -u chainfire.service | grep -c "ERROR"

# Extract error messages
sudo journalctl -u chainfire.service | grep "ERROR"

# Group by error type
sudo journalctl -u chainfire.service -o json | \
  jq -r 'select(.MESSAGE | contains("ERROR")) | .MESSAGE' | \
  sort | uniq -c | sort -rn

# Find slow operations
sudo journalctl -u chainfire.service | grep "slow operation"

# Check for restarts
sudo journalctl -u chainfire.service | grep "Started\|Stopped"

# Extract structured logs
sudo journalctl -u chainfire.service -o json | \
  jq 'select(.level == "ERROR") | {time: .__REALTIME_TIMESTAMP, message: .MESSAGE}'
```

### Remote Log Querying

```bash
# Query logs on remote node
ssh root@node01.example.com 'journalctl -u chainfire.service -n 100'

# Follow remote logs
ssh root@node01.example.com 'journalctl -u chainfire.service -f'

# Query logs from all nodes
for node in node01 node02 node03; do
  echo "=== $node ==="
  ssh root@${node}.example.com 'journalctl -u chainfire.service -n 10'
done
```

## Backup and Restore

### Backup Commands

```bash
# Backup Chainfire data
ssh root@node01.example.com 'tar -czf - /var/lib/chainfire' > chainfire-backup-$(date +%Y%m%d).tar.gz

# Backup FlareDB data
ssh root@node01.example.com 'tar -czf - /var/lib/flaredb' > flaredb-backup-$(date +%Y%m%d).tar.gz

# Backup configuration files
tar -czf provisioning-config-$(date +%Y%m%d).tar.gz /srv/provisioning/nodes/

# Backup TLS certificates
tar -czf tls-certs-$(date +%Y%m%d).tar.gz /srv/provisioning/secrets/*.pem
```

### Automated Backup Script

```bash
#!/bin/bash
# /srv/provisioning/scripts/backup-cluster.sh

BACKUP_DIR="/backup/cluster-$(date +%Y%m%d-%H%M%S)"
mkdir -p "$BACKUP_DIR"

# Backup cluster data from all nodes
for node in node01 node02 node03; do
  echo "Backing up $node..."
  ssh root@$node.example.com "tar -czf - /var/lib/chainfire" > "$BACKUP_DIR/chainfire-$node.tar.gz"
  ssh root@$node.example.com "tar -czf - /var/lib/flaredb" > "$BACKUP_DIR/flaredb-$node.tar.gz"
done

# Backup configurations
cp -r /srv/provisioning/nodes "$BACKUP_DIR/configs"

# Create manifest
cat > "$BACKUP_DIR/manifest.txt" <<EOF
Backup Date: $(date)
Nodes: node01 node02 node03
Contents:
- Chainfire data (all nodes)
- FlareDB data (all nodes)
- Node configurations
EOF

echo "Backup complete: $BACKUP_DIR"
```

### Restore Commands

```bash
# Stop services before restore
ssh root@node01.example.com 'systemctl stop chainfire.service flaredb.service'

# Restore Chainfire data
cat chainfire-backup-20251210.tar.gz | \
  ssh root@node01.example.com 'cd / && tar -xzf -'

# Restore FlareDB data
cat flaredb-backup-20251210.tar.gz | \
  ssh root@node01.example.com 'cd / && tar -xzf -'

# Fix permissions
ssh root@node01.example.com 'chown -R chainfire:chainfire /var/lib/chainfire'
ssh root@node01.example.com 'chown -R flaredb:flaredb /var/lib/flaredb'

# Start services
ssh root@node01.example.com 'systemctl start chainfire.service flaredb.service'

# Verify restore
ssh root@node01.example.com 'systemctl status chainfire.service flaredb.service'
curl -k https://node01.example.com:2379/health | jq
```

### Snapshot Management

```bash
# Create Chainfire snapshot
curl -k -X POST https://node01.example.com:2379/admin/snapshot/create \
  -H "Content-Type: application/json" \
  -d '{"name":"manual-snapshot-'$(date +%Y%m%d-%H%M%S)'"}'

# List snapshots
curl -k https://node01.example.com:2379/admin/snapshot/list | jq

# Restore from snapshot
curl -k -X POST https://node01.example.com:2379/admin/snapshot/restore \
  -H "Content-Type: application/json" \
  -d '{"name":"manual-snapshot-20251210-120000"}'

# Delete old snapshots
curl -k -X DELETE https://node01.example.com:2379/admin/snapshot/manual-snapshot-20251201-120000
```

---

## Quick Reference Cheat Sheet

### Most Common Commands

```bash
# PXE Server
sudo systemctl restart dhcpd4 atftpd nginx
curl http://localhost:8080/health

# Build Images
cd /home/centra/cloud/baremetal/image-builder && ./build-images.sh

# Provision Node
nix run github:nix-community/nixos-anywhere -- --flake /srv/provisioning#node01 root@10.0.100.50

# Cluster Status
curl -k https://node01.example.com:2379/admin/cluster/members | jq

# Service Status
sudo systemctl status chainfire.service
sudo journalctl -u chainfire.service -f

# Health Check
curl -k https://node01.example.com:2379/health | jq

# Power Control
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis power on
ipmitool -I lanplus -H 10.0.10.50 -U admin chassis bootdev pxe

# NixOS Update
sudo nixos-rebuild switch --flake /srv/provisioning#node01

# Logs
sudo journalctl -u chainfire.service -f
```

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**Document End**