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Maintenance

Backup and Recovery​

Flow Backup​

bash


# Manual backup
cp ~/.node-red/flows.json ~/.node-red/flows.json.bak
# Automated backup script
#!/bin/bash
DATE=$(date +%Y%m%d_%H%M%S)
BACKUP_DIR="/backup/node-red"
mkdir -p $BACKUP_DIR
cp -r ~/.node-red $BACKUP_DIR/node-red-$DATE

Database Backup​

bash


# MySQL backup
mysqldump -u username -p database_name > node_red_backup.sql
# MongoDB backup
mongodump --host localhost --port 27017 --db node_red --out /backup/mongodb/

Updates and Patches​

Node-RED Core Updates​

bash


# Check current version
node-red --version
# Update to latest version
npm update -g node-red
# Update to specific version
npm install -g node-red@4.0.3

Node Package Updates​

bash


# List installed packages
npm list -g --depth=0
# Update specific package
npm update -g node-red-contrib-package-name
# Update all packages
npm update -g

Maintenance Tasks​

Log Rotation

bash


# Logrotate configuration
/var/log/node-red/*.log {
    daily
    rotate 7
    compress
    delaycompress
    missingok
    notifempty
    create 644 node-red node-red
    postrotate
        systemctl reload node-red
    endscript
}

Performance Optimization​

bash


# Clear npm cache
npm cache clean --force
# Optimize Node.js heap
export NODE_OPTIONS="--optimize-for-size --max-old-space-size=2048"
# Clean temporary files
find /tmp -name "node-*" -type d -exec rm -rf {} +

Security Maintenance​

Security Updates

bash


# Check for vulnerabilities
npm audit
# Fix vulnerabilities
npm audit fix
# Update security-related packages
npm update express helmet cors

Access Control Review​

javascript


// Regular access control audit
{
    "users": [
        {
            "username": "admin",
            "permissions": ["*"],
            "lastLogin": "2024-01-15T10:30:00Z",
            "status": "active"
        }
    ],
    "apiKeys": [
        {
            "keyId": "key-123",
            "permissions": ["read"],
            "lastUsed": "2024-01-15T09:30:00Z",
            "expiresAt": "2024-06-15T00:00:00Z"
        }
    ]
}