vault Installation Guide

vault is a free and open-source secrets management and data protection platform. Developed by HashiCorp, Vault provides enterprise-grade secrets management, encryption as a service, and privileged access management, serving as an open-source alternative to AWS Secrets Manager, Azure Key Vault, or CyberArk

Secrets management🟡 intermediate7 min⏱️ 15-30 minutes

vault is a free and open-source secrets management and data protection platform. Developed by HashiCorp, Vault provides enterprise-grade secrets management, encryption as a service, and privileged access management, serving as an open-source alternative to AWS Secrets Manager, Azure Key Vault, or CyberArk

1. Prerequisites

  • Hardware Requirements:
  • CPU: 2+ cores recommended
  • RAM: 1GB minimum (2GB+ for production)
  • Storage: 10GB for installation and data
  • Network: HTTPS connectivity for clients
  • Operating System:
  • Linux: Any modern distribution (RHEL, Debian, Ubuntu, CentOS, Fedora, Arch, Alpine, openSUSE)
  • macOS: 10.14+ (Mojave or newer)
  • Windows: Windows Server 2016+ or Windows 10
  • FreeBSD: 11.0+
  • Network Requirements:
  • Port 8200 (default vault port)
  • Port 8201 for cluster communication
  • Dependencies:
  • See official documentation for specific requirements
  • System Access: root or sudo privileges required
  • 2. Supported Operating Systems

    This guide supports installation on:

  • RHEL 8/9 and derivatives (CentOS Stream, Rocky Linux, AlmaLinux)
  • Debian 11/12
  • Ubuntu 20.04/22.04/24.04 LTS
  • Arch Linux (rolling release)
  • Alpine Linux 3.18+
  • openSUSE Leap 15.5+ / Tumbleweed
  • SUSE Linux Enterprise Server (SLES) 15+
  • macOS 12+ (Monterey and later)
  • FreeBSD 13+
  • Windows 10/11/Server 2019+ (where applicable)
  • 3. Installation

    RHEL/CentOS/Rocky Linux/AlmaLinux

    bash
    # Install EPEL repository if needed
    sudo dnf install -y epel-release
    
    # Install vault
    sudo dnf install -y vault
    
    # Enable and start service
    sudo systemctl enable --now vault
    
    # Configure firewall
    sudo firewall-cmd --permanent --add-port=8200/tcp
    sudo firewall-cmd --reload
    
    # Verify installation
    vault --version

    Debian/Ubuntu

    bash
    # Update package index
    sudo apt update
    
    # Install vault
    sudo apt install -y vault
    
    # Enable and start service
    sudo systemctl enable --now vault
    
    # Configure firewall
    sudo ufw allow 8200
    
    # Verify installation
    vault --version

    Arch Linux

    bash
    # Install vault
    sudo pacman -S vault
    
    # Enable and start service
    sudo systemctl enable --now vault
    
    # Verify installation
    vault --version

    Alpine Linux

    bash
    # Install vault
    apk add --no-cache vault
    
    # Enable and start service
    rc-update add vault default
    rc-service vault start
    
    # Verify installation
    vault --version

    openSUSE/SLES

    bash
    # Install vault
    sudo zypper install -y vault
    
    # Enable and start service
    sudo systemctl enable --now vault
    
    # Configure firewall
    sudo firewall-cmd --permanent --add-port=8200/tcp
    sudo firewall-cmd --reload
    
    # Verify installation
    vault --version

    macOS

    bash
    # Using Homebrew
    brew install vault
    
    # Start service
    brew services start vault
    
    # Verify installation
    vault --version

    FreeBSD

    bash
    # Using pkg
    pkg install vault
    
    # Enable in rc.conf
    echo 'vault_enable="YES"' >> /etc/rc.conf
    
    # Start service
    service vault start
    
    # Verify installation
    vault --version

    Windows

    bash
    # Using Chocolatey
    choco install vault
    
    # Or using Scoop
    scoop install vault
    
    # Verify installation
    vault --version

    Initial Configuration

    Basic Configuration

    bash
    # Create configuration directory
    sudo mkdir -p /etc/vault
    
    # Set up basic configuration
    # See official documentation for detailed configuration options
    
    # Test configuration
    vault --version

    5. Service Management

    systemd (RHEL, Debian, Ubuntu, Arch, openSUSE)

    bash
    # Enable service
    sudo systemctl enable vault
    
    # Start service
    sudo systemctl start vault
    
    # Stop service
    sudo systemctl stop vault
    
    # Restart service
    sudo systemctl restart vault
    
    # Check status
    sudo systemctl status vault
    
    # View logs
    sudo journalctl -u vault -f

    OpenRC (Alpine Linux)

    bash
    # Enable service
    rc-update add vault default
    
    # Start service
    rc-service vault start
    
    # Stop service
    rc-service vault stop
    
    # Restart service
    rc-service vault restart
    
    # Check status
    rc-service vault status

    rc.d (FreeBSD)

    bash
    # Enable in /etc/rc.conf
    echo 'vault_enable="YES"' >> /etc/rc.conf
    
    # Start service
    service vault start
    
    # Stop service
    service vault stop
    
    # Restart service
    service vault restart
    
    # Check status
    service vault status

    launchd (macOS)

    bash
    # Using Homebrew services
    brew services start vault
    brew services stop vault
    brew services restart vault
    
    # Check status
    brew services list | grep vault

    Windows Service Manager

    powershell
    # Start service
    net start vault
    
    # Stop service
    net stop vault
    
    # Using PowerShell
    Start-Service vault
    Stop-Service vault
    Restart-Service vault
    
    # Check status
    Get-Service vault

    Advanced Configuration

    See the official documentation for advanced configuration options.

    Reverse Proxy Setup

    nginx Configuration

    nginx
    upstream vault_backend {
        server 127.0.0.1:8200;
    }
    
    server {
        listen 80;
        server_name vault.example.com;
        return 301 https://$server_name$request_uri;
    }
    
    server {
        listen 443 ssl http2;
        server_name vault.example.com;
    
        ssl_certificate /etc/ssl/certs/vault.example.com.crt;
        ssl_certificate_key /etc/ssl/private/vault.example.com.key;
    
        location / {
            proxy_pass http://vault_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;
        }
    }

    Apache Configuration

    apache
    <VirtualHost *:80>
        ServerName vault.example.com
        Redirect permanent / https://vault.example.com/
    </VirtualHost>
    
    <VirtualHost *:443>
        ServerName vault.example.com
        
        SSLEngine on
        SSLCertificateFile /etc/ssl/certs/vault.example.com.crt
        SSLCertificateKeyFile /etc/ssl/private/vault.example.com.key
        
        ProxyRequests Off
        ProxyPreserveHost On
        
        ProxyPass / http://127.0.0.1:8200/
        ProxyPassReverse / http://127.0.0.1:8200/
    </VirtualHost>

    HAProxy Configuration

    haproxy
    frontend vault_frontend
        bind *:80
        bind *:443 ssl crt /etc/ssl/certs/vault.pem
        redirect scheme https if !{ ssl_fc }
        default_backend vault_backend
    
    backend vault_backend
        balance roundrobin
        server vault1 127.0.0.1:8200 check

    Security Configuration

    Basic Security Setup

    bash
    # Set appropriate permissions
    sudo chown -R vault:vault /etc/vault
    sudo chmod 750 /etc/vault
    
    # Configure firewall
    sudo firewall-cmd --permanent --add-port=8200/tcp
    sudo firewall-cmd --reload
    
    # Enable SELinux policies (if applicable)
    sudo setsebool -P httpd_can_network_connect on

    Database Setup

    See official documentation for database configuration requirements.

    Performance Optimization

    System Tuning

    bash
    # Basic system tuning
    echo 'net.core.somaxconn = 65535' | sudo tee -a /etc/sysctl.conf
    echo 'net.ipv4.tcp_max_syn_backlog = 65535' | sudo tee -a /etc/sysctl.conf
    sudo sysctl -p

    Monitoring

    Basic Monitoring

    bash
    # Check service status
    sudo systemctl status vault
    
    # View logs
    sudo journalctl -u vault -f
    
    # Monitor resource usage
    top -p $(pgrep vault)

    9. Backup and Restore

    Backup Script

    bash
    #!/bin/bash
    # Basic backup script
    BACKUP_DIR="/backup/vault"
    DATE=$(date +%Y%m%d_%H%M%S)
    
    mkdir -p "$BACKUP_DIR"
    tar -czf "$BACKUP_DIR/vault-backup-$DATE.tar.gz" /etc/vault /var/lib/vault
    
    echo "Backup completed: $BACKUP_DIR/vault-backup-$DATE.tar.gz"

    Restore Procedure

    bash
    # Stop service
    sudo systemctl stop vault
    
    # Restore from backup
    tar -xzf /backup/vault/vault-backup-*.tar.gz -C /
    
    # Start service
    sudo systemctl start vault

    6. Troubleshooting

    Common Issues

    1. Service won't start:

    bash
    # Check logs
    sudo journalctl -u vault -n 100
    sudo tail -f /var/log/vault/vault.log
    
    # Check configuration
    vault --version
    
    # Check permissions
    ls -la /etc/vault

    2. Connection issues:

    bash
    # Check if service is listening
    sudo ss -tlnp | grep 8200
    
    # Test connectivity
    telnet localhost 8200
    
    # Check firewall
    sudo firewall-cmd --list-all

    3. Performance issues:

    bash
    # Check resource usage
    top -p $(pgrep vault)
    
    # Check disk I/O
    iotop -p $(pgrep vault)
    
    # Check connections
    ss -an | grep 8200

    Integration Examples

    Docker Compose Example

    yaml
    version: '3.8'
    services:
      vault:
        image: vault:latest
        ports:
          - "8200:8200"
        volumes:
          - ./config:/etc/vault
          - ./data:/var/lib/vault
        restart: unless-stopped

    Maintenance

    Update Procedures

    bash
    # RHEL/CentOS/Rocky/AlmaLinux
    sudo dnf update vault
    
    # Debian/Ubuntu
    sudo apt update && sudo apt upgrade vault
    
    # Arch Linux
    sudo pacman -Syu vault
    
    # Alpine Linux
    apk update && apk upgrade vault
    
    # openSUSE
    sudo zypper update vault
    
    # FreeBSD
    pkg update && pkg upgrade vault
    
    # Always backup before updates
    tar -czf /backup/vault-pre-update-$(date +%Y%m%d).tar.gz /etc/vault
    
    # Restart after updates
    sudo systemctl restart vault

    Regular Maintenance

    bash
    # Log rotation
    sudo logrotate -f /etc/logrotate.d/vault
    
    # Clean old logs
    find /var/log/vault -name "*.log" -mtime +30 -delete
    
    # Check disk usage
    du -sh /var/lib/vault

    Additional Resources

  • Official Documentation: https://docs.vault.org/
  • GitHub Repository: https://github.com/vault/vault
  • Community Forum: https://forum.vault.org/
  • Best Practices Guide: https://docs.vault.org/best-practices
  • ---

    Note: This guide is part of the HowToMgr collection. Always refer to official documentation for the most up-to-date information.