Jupyter

# Install EPEL repository if needed
sudo dnf install -y epel-release

# Install jupyter-lab
sudo dnf install -y jupyter-lab python3, python3-pip, nodejs

# Enable and start service
sudo systemctl enable --now jupyter

# Configure firewall
sudo firewall-cmd --permanent --add-service=jupyter-lab || \
  sudo firewall-cmd --permanent --add-port={default_port}/tcp
sudo firewall-cmd --reload

# Verify installation
jupyter-lab --version || systemctl status jupyter

# Update package index
sudo apt update

# Install jupyter-lab
sudo apt install -y jupyter-lab python3, python3-pip, nodejs

# Enable and start service
sudo systemctl enable --now jupyter

# Configure firewall
sudo ufw allow 8888

# Verify installation
jupyter-lab --version || systemctl status jupyter

# Install jupyter-lab
sudo pacman -S jupyter-lab

# Enable and start service
sudo systemctl enable --now jupyter

# Verify installation
jupyter-lab --version || systemctl status jupyter

# Install jupyter-lab
apk add --no-cache jupyter-lab

# Enable and start service
rc-update add jupyter default
rc-service jupyter start

# Verify installation
jupyter-lab --version || rc-service jupyter status

# Install jupyter-lab
sudo zypper install -y jupyter-lab python3, python3-pip, nodejs

# Enable and start service
sudo systemctl enable --now jupyter

# Configure firewall
sudo firewall-cmd --permanent --add-service=jupyter-lab || \
  sudo firewall-cmd --permanent --add-port={default_port}/tcp
sudo firewall-cmd --reload

# Verify installation
jupyter-lab --version || systemctl status jupyter

# Using Homebrew
brew install jupyter-lab

# Start service
brew services start jupyter-lab

# Verify installation
jupyter-lab --version

# Using pkg
pkg install jupyter-lab

# Enable in rc.conf
echo 'jupyter_enable="YES"' >> /etc/rc.conf

# Start service
service jupyter start

# Verify installation
jupyter-lab --version || service jupyter status

# Using Chocolatey
choco install jupyter-lab

# Or using Scoop
scoop install jupyter-lab

# Verify installation
jupyter-lab --version

# Create configuration directory if needed
sudo mkdir -p /etc/jupyter

# Set up basic configuration
sudo tee /etc/jupyter/jupyter-lab.conf << 'EOF'
# Jupyter Lab Configuration
c.NotebookApp.max_buffer_size = 536870912
EOF

# Set appropriate permissions
sudo chown -R jupyter-lab:jupyter-lab /etc/jupyter || \
  sudo chown -R $(whoami):$(whoami) /etc/jupyter

# Test configuration
sudo jupyter-lab --test || sudo jupyter configtest

# Create dedicated user (if not created by package)
sudo useradd --system --shell /bin/false jupyter-lab || true

# Secure configuration files
sudo chmod 750 /etc/jupyter
sudo chmod 640 /etc/jupyter/*.conf

# Enable security features
# See security section for detailed hardening steps

# Enable service
sudo systemctl enable jupyter

# Start service
sudo systemctl start jupyter

# Stop service
sudo systemctl stop jupyter

# Restart service
sudo systemctl restart jupyter

# Reload configuration
sudo systemctl reload jupyter

# Check status
sudo systemctl status jupyter

# View logs
sudo journalctl -u jupyter -f

# Enable service
rc-update add jupyter default

# Start service
rc-service jupyter start

# Stop service
rc-service jupyter stop

# Restart service
rc-service jupyter restart

# Check status
rc-service jupyter status

# View logs
tail -f /var/log/jupyter/jupyter.log

# Enable in /etc/rc.conf
echo 'jupyter_enable="YES"' >> /etc/rc.conf

# Start service
service jupyter start

# Stop service
service jupyter stop

# Restart service
service jupyter restart

# Check status
service jupyter status

# Using Homebrew services
brew services start jupyter-lab
brew services stop jupyter-lab
brew services restart jupyter-lab

# Check status
brew services list | grep jupyter-lab

# View logs
tail -f $(brew --prefix)/var/log/jupyter-lab.log

# Start service
net start jupyter

# Stop service
net stop jupyter

# Using PowerShell
Start-Service jupyter
Stop-Service jupyter
Restart-Service jupyter

# Check status
Get-Service jupyter

# Set to automatic startup
Set-Service jupyter -StartupType Automatic

# Configure performance settings
cat >> /etc/jupyter/jupyter-lab.conf << 'EOF'
# Performance tuning
c.NotebookApp.max_buffer_size = 536870912
EOF

# Apply system tuning
sudo sysctl -w net.core.somaxconn=65535
sudo sysctl -w net.ipv4.tcp_max_syn_backlog=65535
echo "vm.swappiness=10" | sudo tee -a /etc/sysctl.conf
sudo sysctl -p

# Restart service to apply changes
sudo systemctl restart jupyter

# Configure clustering/HA (if supported)
# This varies greatly by tool - see official documentation

# Example load balancing configuration
# Configure multiple instances on different ports
# Use HAProxy or nginx for load balancing

upstream jupyter-lab_backend {
    server 127.0.0.1:8888;
    keepalive 32;
}

server {
    listen 80;
    server_name jupyter-lab.example.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    server_name jupyter-lab.example.com;

    ssl_certificate /etc/ssl/certs/jupyter-lab.crt;
    ssl_certificate_key /etc/ssl/private/jupyter-lab.key;

    # Security headers
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Content-Type-Options nosniff;
    add_header X-Frame-Options SAMEORIGIN;
    add_header X-XSS-Protection "1; mode=block";

    location / {
        proxy_pass http://jupyter-lab_backend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # WebSocket support (if needed)
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }
}

<VirtualHost *:80>
    ServerName jupyter-lab.example.com
    Redirect permanent / https://jupyter-lab.example.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName jupyter-lab.example.com
    
    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/jupyter-lab.crt
    SSLCertificateKeyFile /etc/ssl/private/jupyter-lab.key
    
    # Security headers
    Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains"
    Header always set X-Content-Type-Options nosniff
    Header always set X-Frame-Options SAMEORIGIN
    Header always set X-XSS-Protection "1; mode=block"
    
    ProxyRequests Off
    ProxyPreserveHost On
    
    <Location />
        ProxyPass http://127.0.0.1:8888/
        ProxyPassReverse http://127.0.0.1:8888/
    </Location>
    
    # WebSocket support (if needed)
    RewriteEngine on
    RewriteCond %{HTTP:Upgrade} websocket [NC]
    RewriteCond %{HTTP:Connection} upgrade [NC]
    RewriteRule ^/?(.*) "ws://127.0.0.1:8888/$1" [P,L]
</VirtualHost>

global
    maxconn 4096
    log /dev/log local0
    chroot /var/lib/haproxy
    user haproxy
    group haproxy
    daemon

defaults
    log global
    mode http
    option httplog
    option dontlognull
    timeout connect 5000
    timeout client 50000
    timeout server 50000

frontend jupyter-lab_frontend
    bind *:80
    bind *:443 ssl crt /etc/ssl/certs/jupyter-lab.pem
    redirect scheme https if !{ ssl_fc }
    
    # Security headers
    http-response set-header Strict-Transport-Security "max-age=31536000; includeSubDomains"
    http-response set-header X-Content-Type-Options nosniff
    http-response set-header X-Frame-Options SAMEORIGIN
    http-response set-header X-XSS-Protection "1; mode=block"
    
    default_backend jupyter-lab_backend

backend jupyter-lab_backend
    balance roundrobin
    option httpchk GET /health
    server jupyter-lab1 127.0.0.1:8888 check

jupyter-lab.example.com {
    reverse_proxy 127.0.0.1:8888 {
        header_up Host {upstream_hostport}
        header_up X-Real-IP {remote}
        header_up X-Forwarded-For {remote}
        header_up X-Forwarded-Proto {scheme}
    }
    
    header {
        Strict-Transport-Security "max-age=31536000; includeSubDomains"
        X-Content-Type-Options nosniff
        X-Frame-Options SAMEORIGIN
        X-XSS-Protection "1; mode=block"
    }
    
    encode gzip
}

# Create dedicated user
sudo useradd --system --shell /bin/false --home /etc/jupyter jupyter-lab || true

# Set ownership
sudo chown -R jupyter-lab:jupyter-lab /etc/jupyter
sudo chown -R jupyter-lab:jupyter-lab /var/log/jupyter

# Set permissions
sudo chmod 750 /etc/jupyter
sudo chmod 640 /etc/jupyter/*
sudo chmod 750 /var/log/jupyter

# Configure firewall (UFW)
sudo ufw allow from any to any port 8888 proto tcp comment "Jupyter Lab"

# Configure firewall (firewalld)
sudo firewall-cmd --permanent --new-service=jupyter-lab
sudo firewall-cmd --permanent --service=jupyter-lab --add-port={default_port}/tcp
sudo firewall-cmd --permanent --add-service=jupyter-lab
sudo firewall-cmd --reload

# SELinux configuration (if enabled)
sudo setsebool -P httpd_can_network_connect on
sudo semanage port -a -t http_port_t -p tcp 8888 || true

# Generate self-signed certificate (for testing)
sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
    -keyout /etc/ssl/private/jupyter-lab.key \
    -out /etc/ssl/certs/jupyter-lab.crt \
    -subj "/C=US/ST=State/L=City/O=Organization/CN=jupyter-lab.example.com"

# Set proper permissions
sudo chmod 600 /etc/ssl/private/jupyter-lab.key
sudo chmod 644 /etc/ssl/certs/jupyter-lab.crt

# For production, use Let's Encrypt
sudo certbot certonly --standalone -d jupyter-lab.example.com

# /etc/fail2ban/jail.d/jupyter-lab.conf
[jupyter-lab]
enabled = true
port = 8888
filter = jupyter-lab
logpath = /var/log/jupyter/*.log
maxretry = 5
bantime = 3600
findtime = 600

# /etc/fail2ban/filter.d/jupyter-lab.conf
[Definition]
failregex = ^.*Failed login attempt.*from <HOST>.*$
            ^.*Authentication failed.*from <HOST>.*$
            ^.*Invalid credentials.*from <HOST>.*$
ignoreregex =

# Create database and user
sudo -u postgres psql << EOF
CREATE DATABASE jupyter-lab_db;
CREATE USER jupyter-lab_user WITH ENCRYPTED PASSWORD 'secure_password_here';
GRANT ALL PRIVILEGES ON DATABASE jupyter-lab_db TO jupyter-lab_user;
\q
EOF

# Configure connection in Jupyter Lab
echo "DATABASE_URL=postgresql://jupyter-lab_user:secure_password_here@localhost/jupyter-lab_db" | \
  sudo tee -a /etc/jupyter/jupyter-lab.env

# Create database and user
sudo mysql << EOF
CREATE DATABASE jupyter-lab_db CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
CREATE USER 'jupyter-lab_user'@'localhost' IDENTIFIED BY 'secure_password_here';
GRANT ALL PRIVILEGES ON jupyter-lab_db.* TO 'jupyter-lab_user'@'localhost';
FLUSH PRIVILEGES;
EOF

# Configure connection
echo "DATABASE_URL=mysql://jupyter-lab_user:secure_password_here@localhost/jupyter-lab_db" | \
  sudo tee -a /etc/jupyter/jupyter-lab.env

# Create database directory
sudo mkdir -p /var/lib/jupyter-lab
sudo chown jupyter-lab:jupyter-lab /var/lib/jupyter-lab

# Initialize database
sudo -u jupyter-lab jupyter-lab init-db

# Kernel parameters for better performance
cat << 'EOF' | sudo tee -a /etc/sysctl.conf
# Network performance tuning
net.core.somaxconn = 65535
net.ipv4.tcp_max_syn_backlog = 65535
net.ipv4.ip_local_port_range = 1024 65535
net.core.netdev_max_backlog = 5000
net.ipv4.tcp_tw_reuse = 1

# Memory tuning
vm.swappiness = 10
vm.dirty_ratio = 15
vm.dirty_background_ratio = 5
EOF

# Apply settings
sudo sysctl -p

# Configure system limits
cat << 'EOF' | sudo tee -a /etc/security/limits.conf
jupyter-lab soft nofile 65535
jupyter-lab hard nofile 65535
jupyter-lab soft nproc 32768
jupyter-lab hard nproc 32768
EOF

# Configure application-specific performance settings
cat << 'EOF' | sudo tee -a /etc/jupyter/performance.conf
# Performance configuration
c.NotebookApp.max_buffer_size = 536870912

# Connection pooling
max_connections = 1000
connection_timeout = 30

# Cache settings
cache_size = 256M
cache_ttl = 3600

# Worker processes
workers = 4
threads_per_worker = 4
EOF

# Restart to apply settings
sudo systemctl restart jupyter

# /etc/prometheus/prometheus.yml
scrape_configs:
  - job_name: 'jupyter-lab'
    static_configs:
      - targets: ['localhost:8888/metrics']
    metrics_path: '/metrics'
    scrape_interval: 30s

#!/bin/bash
# /usr/local/bin/jupyter-lab-health

# Check if service is running
if ! systemctl is-active --quiet jupyter; then
    echo "CRITICAL: Jupyter Lab service is not running"
    exit 2
fi

# Check if port is listening
if ! nc -z localhost 8888 2>/dev/null; then
    echo "CRITICAL: Jupyter Lab is not listening on port 8888"
    exit 2
fi

# Check response time
response_time=$(curl -o /dev/null -s -w '%{time_total}' http://localhost:8888/health || echo "999")
if (( $(echo "$response_time > 5" | bc -l) )); then
    echo "WARNING: Slow response time: ${response_time}s"
    exit 1
fi

echo "OK: Jupyter Lab is healthy (response time: ${response_time}s)"
exit 0

# Configure log rotation
cat << 'EOF' | sudo tee /etc/logrotate.d/jupyter-lab
/var/log/jupyter/*.log {
    daily
    rotate 14
    compress
    delaycompress
    missingok
    notifempty
    create 0640 jupyter-lab jupyter-lab
    postrotate
        systemctl reload jupyter > /dev/null 2>&1 || true
    endscript
}
EOF

# Test log rotation
sudo logrotate -d /etc/logrotate.d/jupyter-lab

#!/bin/bash
# /usr/local/bin/jupyter-lab-backup

BACKUP_DIR="/backup/jupyter-lab"
DATE=$(date +%Y%m%d_%H%M%S)
BACKUP_FILE="$BACKUP_DIR/jupyter-lab_backup_$DATE.tar.gz"

# Create backup directory
mkdir -p "$BACKUP_DIR"

# Stop service (if needed for consistency)
echo "Stopping Jupyter Lab service..."
systemctl stop jupyter

# Backup configuration
echo "Backing up configuration..."
tar -czf "$BACKUP_FILE" \
    /etc/jupyter \
    /var/lib/jupyter-lab \
    /var/log/jupyter

# Backup database (if applicable)
if command -v pg_dump &> /dev/null; then
    echo "Backing up database..."
    sudo -u postgres pg_dump jupyter-lab_db | gzip > "$BACKUP_DIR/jupyter-lab_db_$DATE.sql.gz"
fi

# Start service
echo "Starting Jupyter Lab service..."
systemctl start jupyter

# Clean old backups (keep 30 days)
find "$BACKUP_DIR" -name "*.tar.gz" -mtime +30 -delete
find "$BACKUP_DIR" -name "*.sql.gz" -mtime +30 -delete

echo "Backup completed: $BACKUP_FILE"

#!/bin/bash
# /usr/local/bin/jupyter-lab-restore

if [ $# -ne 1 ]; then
    echo "Usage: $0 <backup_file>"
    exit 1
fi

BACKUP_FILE="$1"

if [ ! -f "$BACKUP_FILE" ]; then
    echo "Error: Backup file not found: $BACKUP_FILE"
    exit 1
fi

# Stop service
echo "Stopping Jupyter Lab service..."
systemctl stop jupyter

# Restore files
echo "Restoring from backup..."
tar -xzf "$BACKUP_FILE" -C /

# Restore database (if applicable)
DB_BACKUP=$(echo "$BACKUP_FILE" | sed 's/.tar.gz$/_db.sql.gz/')
if [ -f "$DB_BACKUP" ]; then
    echo "Restoring database..."
    zcat "$DB_BACKUP" | sudo -u postgres psql jupyter-lab_db
fi

# Fix permissions
chown -R jupyter-lab:jupyter-lab /etc/jupyter
chown -R jupyter-lab:jupyter-lab /var/lib/jupyter-lab

# Start service
echo "Starting Jupyter Lab service..."
systemctl start jupyter

echo "Restore completed successfully"

# Check service status and logs
sudo systemctl status jupyter
sudo journalctl -u jupyter -n 100 --no-pager

# Check for port conflicts
sudo ss -tlnp | grep 8888
sudo lsof -i :8888

# Verify configuration
sudo jupyter-lab --test || sudo jupyter configtest

# Check permissions
ls -la /etc/jupyter
ls -la /var/log/jupyter

# Check if service is listening
sudo ss -tlnp | grep jupyter
curl -I http://localhost:8888

# Check firewall rules
sudo firewall-cmd --list-all
sudo iptables -L -n | grep 8888

# Check SELinux (if enabled)
getenforce
sudo ausearch -m avc -ts recent | grep jupyter-lab

# Monitor resource usage
top -p $(pgrep jupyter-lab)
htop -p $(pgrep jupyter-lab)

# Check for memory leaks
ps aux | grep jupyter-lab
cat /proc/$(pgrep jupyter-lab)/status | grep -i vm

# Analyze logs for errors
grep -i error /var/log/jupyter/*.log | tail -50

# Test database connection
psql -U jupyter-lab_user -d jupyter-lab_db -c "SELECT 1;"
mysql -u jupyter-lab_user -p jupyter-lab_db -e "SELECT 1;"

# Check database service
sudo systemctl status postgresql
sudo systemctl status mariadb

# Enable debug logging
echo "debug = true" | sudo tee -a /etc/jupyter/jupyter-lab.conf

# Restart with debug mode
sudo systemctl stop jupyter
sudo -u jupyter-lab jupyter-lab --debug

# Watch debug logs
tail -f /var/log/jupyter/debug.log

# Profile CPU usage
sudo perf record -p $(pgrep jupyter-lab) sleep 30
sudo perf report

# Analyze network traffic
sudo tcpdump -i any -w /tmp/jupyter-lab.pcap port 8888
sudo tcpdump -r /tmp/jupyter-lab.pcap -nn

# Monitor disk I/O
sudo iotop -p $(pgrep jupyter-lab)

# docker-compose.yml
version: '3.8'

services:
  jupyter-lab:
    image: jupyter-lab:jupyter-lab
    container_name: jupyter-lab
    restart: unless-stopped
    ports:
      - "8888:8888"
    environment:
      - TZ=UTC
      - PUID=1000
      - PGID=1000
    volumes:
      - ./config:/etc/jupyter
      - ./data:/var/lib/jupyter-lab
      - ./logs:/var/log/jupyter
    networks:
      - jupyter-lab_network
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8888/health"]
      interval: 30s
      timeout: 10s
      retries: 3

networks:
  jupyter-lab_network:
    driver: bridge

# jupyter-lab-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: jupyter-lab
  labels:
    app: jupyter-lab
spec:
  replicas: 1
  selector:
    matchLabels:
      app: jupyter-lab
  template:
    metadata:
      labels:
        app: jupyter-lab
    spec:
      containers:
      - name: jupyter-lab
        image: jupyter-lab:jupyter-lab
        ports:
        - containerPort: 8888
        env:
        - name: TZ
          value: UTC
        volumeMounts:
        - name: config
          mountPath: /etc/jupyter
        - name: data
          mountPath: /var/lib/jupyter-lab
        livenessProbe:
          httpGet:
            path: /health
            port: 8888
          initialDelaySeconds: 30
          periodSeconds: 30
        readinessProbe:
          httpGet:
            path: /ready
            port: 8888
          initialDelaySeconds: 5
          periodSeconds: 10
      volumes:
      - name: config
        configMap:
          name: jupyter-lab-config
      - name: data
        persistentVolumeClaim:
          claimName: jupyter-lab-data
---
apiVersion: v1
kind: Service
metadata:
  name: jupyter-lab
spec:
  selector:
    app: jupyter-lab
  ports:
  - protocol: TCP
    port: 8888
    targetPort: 8888
  type: LoadBalancer
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: jupyter-lab-data
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi

---
# jupyter-lab-playbook.yml
- name: Install and configure Jupyter Lab
  hosts: all
  become: yes
  vars:
    jupyter-lab_version: latest
    jupyter-lab_port: 8888
    jupyter-lab_config_dir: /etc/jupyter
  
  tasks:
    - name: Install dependencies
      package:
        name:
          - python3, python3-pip, nodejs
        state: present
    
    - name: Install Jupyter Lab
      package:
        name: jupyter-lab
        state: present
    
    - name: Create configuration directory
      file:
        path: "{{ jupyter-lab_config_dir }}"
        state: directory
        owner: jupyter-lab
        group: jupyter-lab
        mode: '0750'
    
    - name: Deploy configuration
      template:
        src: jupyter-lab.conf.j2
        dest: "{{ jupyter-lab_config_dir }}/jupyter-lab.conf"
        owner: jupyter-lab
        group: jupyter-lab
        mode: '0640'
      notify: restart jupyter-lab
    
    - name: Start and enable service
      systemd:
        name: jupyter
        state: started
        enabled: yes
        daemon_reload: yes
    
    - name: Configure firewall
      firewalld:
        port: "{{ jupyter-lab_port }}/tcp"
        permanent: yes
        immediate: yes
        state: enabled
  
  handlers:
    - name: restart jupyter-lab
      systemd:
        name: jupyter
        state: restarted

# jupyter-lab.tf
resource "aws_instance" "jupyter-lab_server" {
  ami           = var.ami_id
  instance_type = "t3.medium"
  
  vpc_security_group_ids = [aws_security_group.jupyter-lab.id]
  
  user_data = <<-EOF
    #!/bin/bash
    # Install Jupyter Lab
    apt-get update
    apt-get install -y jupyter-lab python3, python3-pip, nodejs
    
    # Configure Jupyter Lab
    systemctl enable jupyter
    systemctl start jupyter
  EOF
  
  tags = {
    Name = "Jupyter Lab Server"
    Application = "Jupyter Lab"
  }
}

resource "aws_security_group" "jupyter-lab" {
  name        = "jupyter-lab-sg"
  description = "Security group for Jupyter Lab"
  
  ingress {
    from_port   = 8888
    to_port     = 8888
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }
  
  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
  
  tags = {
    Name = "Jupyter Lab Security Group"
  }
}

# RHEL/CentOS/Rocky/AlmaLinux
sudo dnf check-update jupyter-lab
sudo dnf update jupyter-lab

# Debian/Ubuntu
sudo apt update
sudo apt upgrade jupyter-lab

# Arch Linux
sudo pacman -Syu jupyter-lab

# Alpine Linux
apk update
apk upgrade jupyter-lab

# openSUSE
sudo zypper ref
sudo zypper update jupyter-lab

# FreeBSD
pkg update
pkg upgrade jupyter-lab

# Always backup before updates
/usr/local/bin/jupyter-lab-backup

# Restart after updates
sudo systemctl restart jupyter

# Clean old logs
find /var/log/jupyter -name "*.log" -mtime +30 -delete

# Vacuum database (if PostgreSQL)
sudo -u postgres vacuumdb --analyze jupyter-lab_db

# Check disk usage
df -h | grep -E "(/$|jupyter-lab)"
du -sh /var/lib/jupyter-lab

# Update security patches
sudo unattended-upgrade -d

# Review security logs
sudo aureport --summary
sudo journalctl -u jupyter | grep -i "error\|fail\|deny"