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https://github.com/scav-enger/v.k.m

V.K.M - Virtual | Kernel | Manager -
https://github.com/scav-enger/v.k.m

automate fix kenrnel kernel-management kernel-manager kvm linux virtual-private-cloud vps

Last synced: 17 days ago
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V.K.M - Virtual | Kernel | Manager -

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README 

          
# V.K.M

V.K.M - Virtual | Kernel | Manager -

# VPS Kernel Manager (VKM) v1.0



Advanced Linux Kernel Management Tool for Debian 10 (Buster) and Compatible Systems



## 🚀 Features



### Core Functionality

- **Interactive CLI Interface** - Rich, user-friendly terminal interface

- **Kernel Switching** - Seamless switching between installed kernels

- **Automated Compilation** - Custom kernel compilation with VPS optimizations

- **Patch Management** - Download and apply performance/security patches

- **VPS Optimizations** - Network, memory, and I/O optimizations

- **Security Hardening** - Kernel security configurations and audit logging

- **Performance Benchmarking** - System performance analysis and validation



### Advanced Features

- **Multiple Kernel Variants** - Support for XanMod, Liquorix, RT kernels

- **Automated Patching** - XanMod performance patches, security updates

- **BBR TCP Congestion Control** - Network performance optimization

- **Transparent Huge Pages** - Memory management optimization

- **I/O Scheduler Selection** - Optimized disk performance

- **Audit Logging** - Security compliance and monitoring

- **Configuration Management** - Flexible, persistent configuration system



## 📋 Prerequisites



### System Requirements

- **OS**: Debian 10 (Buster) or compatible (Ubuntu 18.04+)

- **Architecture**: x86_64 (amd64)

- **Memory**: 1GB+ RAM (2GB+ recommended for compilation)

- **Storage**: 2GB+ free space

- **Root Access**: Required for system operations



### Dependencies (Auto-installed)

- Python 3.6+

- Build tools (gcc, make, etc.)

- Kernel build dependencies

- Rich CLI library

- Click framework



## 🔧 Installation



### Quick Install

```bash

# Download the installer

wget https://raw.githubusercontent.com/your-repo/vkm/main/install.sh



# Make executable and run

chmod +x install.sh

sudo ./install.sh

```



### Manual Install

```bash

# Clone repository

git clone https://github.com/your-repo/vkm.git

cd vkm



# Run installer

sudo ./install.sh

```



### Verification

```bash

# Check installation

vkm --version

vkm info

```



## 🎮 Usage



### Interactive Mode (Recommended)

```bash

# Start interactive interface

sudo vkm interactive

```



The interactive mode provides a menu-driven interface with:

- System information display

- Kernel management options

- Real-time progress indicators

- Configuration management

- Help and guidance



### Command Line Interface



#### System Information

```bash

# Show system details

vkm info



# List available kernels

vkm list-kernels

```



#### Kernel Management

```bash

# Switch to specific kernel

sudo vkm switch 5.4.0-74-generic



# Compile custom kernel

sudo vkm compile --version latest --optimization vps



# Compile with specific options

sudo vkm compile --version 5.15.0 --optimization performance

```



#### Optimization

```bash

# Apply all VPS optimizations

sudo vkm optimize



# Apply specific optimizations

sudo vkm optimize --type network

sudo vkm optimize --type memory

sudo vkm optimize --type io

```



#### Patch Management

```bash

# Download XanMod performance patches

sudo vkm patch



# Download custom patch

sudo vkm patch --url https://example.com/patch.patch --name custom-patch

```



#### Security

```bash

# Apply security hardening

sudo vkm harden

```



#### Benchmarking

```bash

# Run performance benchmark

vkm benchmark

```



## ⚙️ Configuration



### Configuration File

Location: `/etc/vkm/vkm.conf` or `~/.vkm/config.ini`



```ini

[general]

build_dir = /tmp/vkm-build

kernel_source_dir = /usr/src

default_optimization = O2

parallel_jobs = 4

auto_backup = true

max_kernels = 5



[compilation]

compiler = gcc

enable_lto = false

enable_pgo = false

custom_cflags = -march=native

debug_info = false



[vps]

tcp_congestion = bbr

io_scheduler = mq-deadline

transparent_hugepages = madvise

vm_swappiness = 1

enable_thp = true



[security]

enable_hardening = true

secure_boot = false

sign_modules = false

audit_logging = true



[patches]

auto_download = true

patch_sources = https://github.com/xanmod/linux-patches

security_patches = true

performance_patches = true

```



### Kernel Optimization Levels



#### VPS (Default)

- Virtualization support optimized

- BBR TCP congestion control

- mq-deadline I/O scheduler

- Memory management for VPS

- Security hardening enabled



#### Performance

- Preemptible kernel (PREEMPT)

- 1000Hz timer frequency

- Aggressive CPU optimizations

- Minimal debugging



#### Minimal

- Monolithic kernel (no modules)

- Minimal feature set

- Optimized for size

- Fastest boot time



## 🔍 Advanced Usage



### Custom Kernel Compilation



#### Optimization Flags

```bash

# VPS-optimized build

sudo vkm compile --optimization vps



# Performance-focused build

sudo vkm compile --optimization performance



# Minimal build for containers

sudo vkm compile --optimization minimal

```



#### Custom Configuration

```bash

# Use specific compiler

vkm config set compilation compiler clang



# Enable Link Time Optimization

vkm config set compilation enable_lto true



# Custom CFLAGS

vkm config set compilation custom_cflags "-march=native -O3"

```



### Patch Management



#### XanMod Patches

- **BBRv3**: Latest TCP congestion control

- **CACULE Scheduler**: Interactive task scheduling

- **Multigenerational LRU**: Advanced memory management

- **LE9 Patches**: Low latency optimizations



#### Security Patches

- Automatic CVE patch detection

- Kernel hardening patches

- Security backports



#### Custom Patches

```bash

# Apply custom patch to kernel source

sudo vkm patch --url https://lkml.org/patch.mbox --name security-fix



# Apply patch during compilation

sudo vkm compile --patches custom-patch.patch

```



### VPS Optimizations



#### Network Optimization

- BBR/BBRv3 TCP congestion control

- Increased network buffers

- TCP window scaling

- Fast open connections



#### Memory Optimization

- Low swappiness (vm.swappiness=1)

- Optimized cache pressure

- Transparent huge pages

- Dirty page write optimization



#### I/O Optimization

- mq-deadline scheduler for SSDs

- BFQ scheduler for HDDs

- Optimized queue depths

- Read-ahead optimization



### Security Hardening



#### Kernel Security

- Address space layout randomization

- Stack protection

- Hardened user copy

- Restricted dmesg access



#### Audit Logging

- Kernel module monitoring

- System call auditing

- File access monitoring

- Security event logging



## 📊 Performance Benchmarking



### Network Benchmarks

- TCP throughput testing

- Latency measurements

- Congestion control validation

- Multi-connection testing



### Disk Benchmarks

- Sequential read/write speeds

- Random I/O performance

- I/O scheduler comparison

- Latency analysis



### Memory Benchmarks

- Memory bandwidth testing

- Cache performance

- THP effectiveness

- Swap usage analysis



## 🛠️ Troubleshooting



### Common Issues



#### Compilation Failures

```bash

# Check build dependencies

sudo apt install build-essential linux-source



# Verify disk space

df -h /tmp



# Check memory availability

free -h

```



#### Boot Issues

```bash

# Access GRUB menu during boot

# Select "Advanced options"

# Choose previous kernel



# Or use recovery mode

# Mount filesystem read-write

# Edit /etc/default/grub

# Run update-grub

```



#### Performance Issues

```bash

# Verify optimizations are applied

vkm benchmark



# Check sysctl settings

sysctl net.ipv4.tcp_congestion_control

sysctl vm.swappiness



# Monitor system performance

htop

iotop

```



### Logs and Debugging

```bash

# VKM logs

tail -f /var/log/vkm/vkm_$(date +%Y%m%d).log



# Kernel logs

dmesg | tail -50



# System logs

journalctl -f



# Compilation logs

tail -f /tmp/vkm-build/build.log

```



## 🔒 Security Considerations



### Kernel Security

- Only use trusted patch sources

- Verify signatures when possible

- Test kernels in non-production first

- Maintain kernel backups



### System Security

- Regular security updates

- Monitor audit logs

- Use secure boot when possible

- Keep build environment isolated



## 📈 Performance Tuning



### Network Performance

```bash

# Optimize for high bandwidth

echo 'net.core.rmem_max = 268435456' >> /etc/sysctl.conf

echo 'net.core.wmem_max = 268435456' >> /etc/sysctl.conf



# Enable BBR

echo 'net.ipv4.tcp_congestion_control = bbr' >> /etc/sysctl.conf



# Apply changes

sysctl -p

```



### Memory Performance

```bash

# Optimize for VPS

echo 'vm.swappiness = 1' >> /etc/sysctl.conf

echo 'vm.vfs_cache_pressure = 10' >> /etc/sysctl.conf



# Configure THP

echo madvise > /sys/kernel/mm/transparent_hugepage/enabled

```



### I/O Performance

```bash

# Set optimal I/O scheduler

echo mq-deadline > /sys/block/sda/queue/scheduler



# Optimize queue depth

echo 32 > /sys/block/sda/queue/nr_requests

```



## 🔄 Maintenance



### Regular Tasks

- Monitor kernel security advisories

- Update patches monthly

- Benchmark performance quarterly

- Review audit logs weekly



### Automated Maintenance

```bash

# Enable automatic monitoring

sudo systemctl enable vkm-monitor.timer



# Schedule weekly optimization checks

sudo crontab -e

# Add: 0 2 * * 1 /usr/local/bin/vkm optimize --auto

```



## 🆘 Support and Contributing



### Getting Help

- Check logs: `/var/log/vkm/`

- Run diagnostics: `vkm info`

- Review configuration: `vkm config show`



### Reporting Issues

Include:

- VKM version: `vkm --version`

- System info: `vkm info`

- Error logs: `/var/log/vkm/`

- Steps to reproduce



### Contributing

- Fork the repository

- Create feature branch

- Add tests for new features

- Submit pull request



## 📝 License



This project is licensed under the MIT License - see the LICENSE file for details.



## ⚠️ Disclaimer



This tool modifies kernel configurations and system settings. While designed for safety:

- Always test in non-production environments first

- Maintain current kernel backups

- Understand the implications of changes

- Use at your own risk



VKM is not affiliated with any kernel maintainers or distributions.



## 🔗 References



- [Linux Kernel Documentation](https://www.kernel.org/doc/)

- [XanMod Kernel](https://xanmod.org/)

- [BBR Congestion Control](https://github.com/google/bbr)

- [Debian Kernel Handbook](https://kernel-team.pages.debian.net/kernel-handbook/)

- [VPS Optimization Guide](https://wiki.archlinux.org/title/Improving_performance)