Tweaking unit files - Linux Tutorial

Contents

• Introduction Introduction

  • Linux under the hood: Introduction

    2m 34s
• Lesson 1: Core Linux Elements Lesson 1: Core Linux Elements

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    Module 1: Linux architecture introduction

    37s
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    Learning objectives

    40s
  • System space and user space, and how they are related

    4m 22s
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    The role of the kernel

    1m 8s
  • Why the root user is unrestricted

    3m 37s
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    Drivers, kernel modules, and device files

    4m 27s
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    Glibc

    1m 41s
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    The shell

    50s
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    File descriptors

    3m
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    Real-world scenario: Understanding the root user

    1m 57s
• Lesson 2: The Linux Boot Procedure Lesson 2: The Linux Boot Procedure

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    Learning objectives

    51s
  • The boot procedure from firmware to shell

    4m 51s
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    System firmware: UEFI and BIOS

    1m 34s
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    Managing UEFI booting

    6m 55s
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    Bootloaders

    5m 34s
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    Where GRUB is stored

    2m 48s
  • Configuring GRUB2

    8m 17s
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    Understanding and modifying initramfs

    3m 40s
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    Service managers

    1m 9s
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    Booting cloud Linux instances

    50s
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    Accessing an early boot shell

    5m 47s
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    Real-world scenario: Recovering from a lost MBR

    7m 33s
• Lesson 3: Looking Closer at the Kernel Lesson 3: Looking Closer at the Kernel

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    Learning objectives

    45s
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    Why compiling kernels isn’t necessary anymore

    1m 16s
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    Kernel generic interfaces

    5m 22s
  • Managing and tuning kernel modules

    7m 48s
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    The /proc pseudo filesystem

    1m 30s
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    Using /proc to get detailed system information

    5m 45s
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    Reading process information in /proc

    4m 17s
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    Tuning the kernel through /proc/sys

    4m 33s
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    Testing critical features with sysrq

    3m 11s
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    Using watchdogs

    2m 36s
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    eBPF

    2m 22s
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    Real-world scenario: Automatically recovering from system hangs

    1m 29s
• Lesson 4: Systemd Taking Over Lesson 4: Systemd Taking Over

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    Learning objectives

    55s
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    Manually starting systemd

    4m 32s
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    Systemd unit files

    4m 39s
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    Tweaking unit files

    7m 5s
  • Mounting filesystems with systemd

    11m 18s
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    Using sockets

    4m 2s
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    Scheduling processes with timers

    4m 35s
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    Analyzing systemd performance

    4m 25s
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    Advanced dependency handling

    5m 34s
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    Managing resource allocation, part 1

    12m 16s
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    Managing resource allocation, part 2

    6m 16s
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    Managing resource allocation, part 3

    3m 20s
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    Creating custom units

    3m 50s
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    Creating custom targets

    5m 31s
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    Running user processes in systemd

    4m 52s
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    Real-world scenario: Booting without /etc/fstab

    9m 39s
• Lesson 5: Hardware Handling Lesson 5: Hardware Handling

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    Learning objectives

    36s
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    Understanding device nodes

    3m 53s
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    Initializing devices automatically or manually

    3m 14s
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    Analyzing sysfs

    5m 30s
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    Systemd-udevd

    3m 41s
  • Creating udev rules

    6m 48s
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    Real-world scenario: Denying unauthorized devices

    2m 33s
• Lesson 6: Storage Devices Lesson 6: Storage Devices

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    Module 2: Storage and filesystems introduction

    22s
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    Learning objectives

    1m 9s
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    Linux storage devices

    4m 29s
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    Partitions: MBR and GPT

    9m 53s
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    Managing partitions

    13m 58s
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    Images and ISO files

    2m 57s
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    Understanding flexible storage solutions

    1m 4s
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    Managing LVM logical volumes

    4m 35s
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    Using LVM features

    11m 32s
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    Device mapper

    4m 49s
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    Manually creating device mapper storage

    6m 3s
  • LVM and VDO

    7m 14s
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    Stratis

    8m 50s
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    Creating encrypted devices

    9m 20s
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    Booting from encrypted devices

    4m 53s
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    Real-world scenario: Creating a hidden storage device

    5m 23s
• Lesson 7: Filesystems Lesson 7: Filesystems

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    Learning objectives

    52s
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    Filesystems and the VFS

    4m 18s
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    About POSIX and non-POSIX filesystems

    4m 24s
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    Linux filesystem components

    4m 4s
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    Inodes and block allocation

    5m 56s
  • Sparse files

    7m 34s
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    FUSE filesystems

    3m 56s
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    Next-generation filesystems

    4m 34s
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    Running ZFS on Linux

    5m 37s
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    Running Btrfs

    7m 54s
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    Using the Ext filesystem debugger

    7m 41s
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    Managing XFS IDs

    4m 24s
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    Real-world scenario: Exploring cool filesystem tools

    3m 54s
• Lesson 8: Cloud and Datacenter Storage Lesson 8: Cloud and Datacenter Storage

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    Learning objectives

    45s
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    Storage challenges in cloud and datacenter

    2m 9s
  • Working with SSD media

    4m 47s
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    Understanding iSCSI

    3m 50s
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    Configuring iSCSI storage

    9m 36s
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    Connecting the initiator

    4m 53s
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    Object storage

    4m 2s
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    Configuring a Ceph cluster

    9m 41s
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    Configuring a Ceph client

    7m 52s
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    Real-world scenario: Ceph in Kubernetes

    2m 12s
• Lesson 9: Memory Management Lesson 9: Memory Management

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    Module 3: Core Linux components introduction

    19s
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    Learning objectives

    44s
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    Linux memory allocation: Virtual vs. physical memory

    4m 41s
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    Cache

    6m 59s
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    Active and inactive memory

    6m 24s
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    The need to swap

    4m 5s
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    Configuring and monitoring swap space

    7m 20s
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    Managing huge pages

    9m 40s
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    Managing dirty cache

    2m 17s
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    Out of memory (OOM) and dealing with it

    12m 4s
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    Analyzing kernel memory

    3m 52s
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    Real-world scenario: Optimizing memory usage

    2m 55s
• Lesson 10: Processes Lesson 10: Processes

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    Learning objectives

    48s
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    How a process is created

    5m 39s
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    Processes and threads

    6m 22s
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    Killing a zombie

    10m 17s
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    Priorities, schedulers, and nice values

    10m 52s
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    Inter-process communication, sockets, pipes, and more

    6m 37s
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    Communicating on the D-Bus message interface

    8m 14s
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    Monitoring IPC usage

    3m 38s
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    Real-world scenario: Cgroups and priorities

    4m 59s
• Lesson 11: Linux Commands and How They Work Lesson 11: Linux Commands and How They Work

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    Learning objectives

    47s
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    Exploring what happens when commands are executed

    4m 39s
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    System space and user space

    1m
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    Understanding system calls

    7m 41s
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    How processes get access to system calls

    3m 55s
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    How process memory is organized

    6m 8s
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    Creating processes

    3m 42s
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    Allocating memory

    1m 54s
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    Accessing libraries

    3m 26s
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    Analyzing library usage

    2m 11s
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    Real-world scenario: Using exec for troubleshooting

    2m 27s
• Lesson 12: Networking Lesson 12: Networking

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    Learning objectives

    53s
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    Linux network device names

    3m 12s
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    The OSI model

    6m 17s
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    Transforming data into packets

    5m 15s
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    Analyzing packet headers

    4m 57s
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    IPv4 and IPv6

    9m 18s
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    How Linux chooses a network interface

    5m 56s
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    Analyzing and optimizing networking

    4m 16s
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    Bonding and teaming

    1m 53s
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    Network bridge devices

    2m 8s
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    Real-world scenario: Scanning packets for security

    3m 4s
• Lesson 13: Containers are Linux, Linux is Containers Lesson 13: Containers are Linux, Linux is Containers

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    Module 4: Key Linux components introduction

    24s
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    Learning objectives

    1m 7s
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    Running an application on Linux

    3m
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    Running applications in a chroot jail

    3m 15s
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    Managing Linux process resource allocation

    2m 58s
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    Using unshare to run namespaced processes

    3m 28s
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    Running Linux applications with namespaces and cgroups

    5m 4s
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    From restricted Linux applications to containers

    2m 37s
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    Container runtimes

    2m 53s
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    Systemd containers

    7m 56s
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    Containers and the future of Linux

    1m 37s
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    Real-world scenario: Running pure Linux containers

    2m 45s
• Lesson 14: The Code Behind Linux Lesson 14: The Code Behind Linux

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    Learning objectives

    49s
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    The C programming language

    1m 20s
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    Working together in Git

    3m 28s
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    From Git project to Linux distributions

    1m 32s
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    C programs: From source code to binary

    4m 46s
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    C and libraries

    44s
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    Compiling a C program from a makefile

    3m 55s
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    Real-world scenario: Writing your own zombie

    2m 53s
• Summary Summary

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    Linux under the hood: Summary

    20s