flux Installation Guide Installation Guide

flux is a free and open-source GitOps toolkit for Kubernetes. Flux enables continuous delivery of applications to Kubernetes through GitOps, serving as an alternative to Argo CD

Hardware Requirements:

CPU: 1 core minimum

RAM: 512MB minimum

Storage: 100MB for installation

Network: Git repository access

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 N/A (default flux port)

Webhook receiver on 9292

Dependencies:

See official documentation for specific requirements

System Access: root or sudo privileges required

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)

bash

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

# Install flux
sudo dnf install -y flux

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

# Configure firewall
sudo firewall-cmd --permanent --add-port=N/A/tcp
sudo firewall-cmd --reload

# Verify installation
flux --version

bash

# Update package index
sudo apt update

# Install flux
sudo apt install -y flux

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

# Configure firewall
sudo ufw allow N/A

# Verify installation
flux --version

bash

# Install flux
sudo pacman -S flux

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

# Verify installation
flux --version

bash

# Install flux
apk add --no-cache flux

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

# Verify installation
flux --version

bash

# Install flux
sudo zypper install -y flux

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

# Configure firewall
sudo firewall-cmd --permanent --add-port=N/A/tcp
sudo firewall-cmd --reload

# Verify installation
flux --version

bash

# Using Homebrew
brew install flux

# Start service
brew services start flux

# Verify installation
flux --version

bash

# Using pkg
pkg install flux

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

# Start service
service flux start

# Verify installation
flux --version

bash

# Using Chocolatey
choco install flux

# Or using Scoop
scoop install flux

# Verify installation
flux --version

bash

# Create configuration directory
sudo mkdir -p /etc/flux

# Set up basic configuration
# See official documentation for detailed configuration options

# Test configuration
flux --version

bash

# Enable service
sudo systemctl enable flux

# Start service
sudo systemctl start flux

# Stop service
sudo systemctl stop flux

# Restart service
sudo systemctl restart flux

# Check status
sudo systemctl status flux

# View logs
sudo journalctl -u flux -f

bash

# Enable service
rc-update add flux default

# Start service
rc-service flux start

# Stop service
rc-service flux stop

# Restart service
rc-service flux restart

# Check status
rc-service flux status

bash

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

# Start service
service flux start

# Stop service
service flux stop

# Restart service
service flux restart

# Check status
service flux status

bash

# Using Homebrew services
brew services start flux
brew services stop flux
brew services restart flux

# Check status
brew services list | grep flux

powershell

# Start service
net start flux

# Stop service
net stop flux

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

# Check status
Get-Service flux

See the official documentation for advanced configuration options.

nginx

upstream flux_backend {
    server 127.0.0.1:N/A;
}

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

server {
    listen 443 ssl http2;
    server_name flux.example.com;

    ssl_certificate /etc/ssl/certs/flux.example.com.crt;
    ssl_certificate_key /etc/ssl/private/flux.example.com.key;

    location / {
        proxy_pass http://flux_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

<VirtualHost *:80>
    ServerName flux.example.com
    Redirect permanent / https://flux.example.com/
</VirtualHost>

<VirtualHost *:443>
    ServerName flux.example.com
    
    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/flux.example.com.crt
    SSLCertificateKeyFile /etc/ssl/private/flux.example.com.key
    
    ProxyRequests Off
    ProxyPreserveHost On
    
    ProxyPass / http://127.0.0.1:N/A/
    ProxyPassReverse / http://127.0.0.1:N/A/
</VirtualHost>

haproxy

frontend flux_frontend
    bind *:80
    bind *:443 ssl crt /etc/ssl/certs/flux.pem
    redirect scheme https if !{ ssl_fc }
    default_backend flux_backend

backend flux_backend
    balance roundrobin
    server flux1 127.0.0.1:N/A check

bash

# Set appropriate permissions
sudo chown -R flux:flux /etc/flux
sudo chmod 750 /etc/flux

# Configure firewall
sudo firewall-cmd --permanent --add-port=N/A/tcp
sudo firewall-cmd --reload

# Enable SELinux policies (if applicable)
sudo setsebool -P httpd_can_network_connect on

See official documentation for database configuration requirements.

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

bash

# Check service status
sudo systemctl status flux

# View logs
sudo journalctl -u flux -f

# Monitor resource usage
top -p $(pgrep flux)

bash

#!/bin/bash
# Basic backup script
BACKUP_DIR="/backup/flux"
DATE=$(date +%Y%m%d_%H%M%S)

mkdir -p "$BACKUP_DIR"
tar -czf "$BACKUP_DIR/flux-backup-$DATE.tar.gz" /etc/flux /var/lib/flux

echo "Backup completed: $BACKUP_DIR/flux-backup-$DATE.tar.gz"

bash

# Stop service
sudo systemctl stop flux

# Restore from backup
tar -xzf /backup/flux/flux-backup-*.tar.gz -C /

# Start service
sudo systemctl start flux

1. Service won't start:

bash

# Check logs
sudo journalctl -u flux -n 100
sudo tail -f /var/log/flux/flux.log

# Check configuration
flux --version

# Check permissions
ls -la /etc/flux

2. Connection issues:

bash

# Check if service is listening
sudo ss -tlnp | grep N/A

# Test connectivity
telnet localhost N/A

# Check firewall
sudo firewall-cmd --list-all

3. Performance issues:

bash

# Check resource usage
top -p $(pgrep flux)

# Check disk I/O
iotop -p $(pgrep flux)

# Check connections
ss -an | grep N/A

yaml

version: '3.8'
services:
  flux:
    image: flux:latest
    ports:
      - "N/A:N/A"
    volumes:
      - ./config:/etc/flux
      - ./data:/var/lib/flux
    restart: unless-stopped

Maintenance

bash

# RHEL/CentOS/Rocky/AlmaLinux
sudo dnf update flux

# Debian/Ubuntu
sudo apt update && sudo apt upgrade flux

# Arch Linux
sudo pacman -Syu flux

# Alpine Linux
apk update && apk upgrade flux

# openSUSE
sudo zypper update flux

# FreeBSD
pkg update && pkg upgrade flux

# Always backup before updates
tar -czf /backup/flux-pre-update-$(date +%Y%m%d).tar.gz /etc/flux

# Restart after updates
sudo systemctl restart flux

Regular Maintenance

bash

# Log rotation
sudo logrotate -f /etc/logrotate.d/flux

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

# Check disk usage
du -sh /var/lib/flux

Official Documentation: https://docs.flux.org/

GitHub Repository: https://github.com/flux/flux

Community Forum: https://forum.flux.org/

Best Practices Guide: https://docs.flux.org/best-practices

---

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

1. Prerequisites

2. Supported Operating Systems

3. Installation

RHEL/CentOS/Rocky Linux/AlmaLinux

Debian/Ubuntu

Arch Linux

Alpine Linux

openSUSE/SLES

macOS

FreeBSD

Windows

Initial Configuration

Basic Configuration

5. Service Management

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

OpenRC (Alpine Linux)

rc.d (FreeBSD)

launchd (macOS)

Windows Service Manager

Advanced Configuration

Reverse Proxy Setup

nginx Configuration

Apache Configuration

HAProxy Configuration

Security Configuration

Basic Security Setup

Database Setup

Performance Optimization

System Tuning

Monitoring

Basic Monitoring

9. Backup and Restore

Backup Script

Restore Procedure

6. Troubleshooting

Common Issues

Integration Examples

Docker Compose Example

Maintenance

Update Procedures

Regular Maintenance

Additional Resources

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