RHCSA-notitie

Persoonlijke notitie ter voorbereiding van RHCSA.

Bron: https://www.redhat.com/en/services/training/ex200-red-hat-certified-system-administrator-rhcsa-exam

Understand and use essential tools

• Access a shell prompt and issue commands with correct syntax
• Use input-output redirection (>, >>, |, 2>, etc.)
• Use grep and regular expressions to analyze text
• Access remote systems using ssh
• [Log in and switch users in multiuser targets](1-Understand and use essential tools/5-Log in and switch users in multiuser targets.md)
• Archive, compress, unpack, and uncompress files using tar, star, gzip, and bzip2
• Create and edit text files
• Create, delete, copy, and move files and directories
• Create hard and soft links
• List, set, and change standard ugo/rwx permissions
• Locate, read, and use system documentation including man, info, and files in /usr/share/doc

Operate running systems

• [Boot, reboot, and shut down a system normally](2-Operate running systems/1-Boot, reboot, and shut down a system normally.md)
• [Boot systems into different targets manually](2-Operate running systems/2-Boot systems into different targets manually.md)
• [Interrupt the boot process in order to gain access to a system](2-Operate running systems/3-Interrupt the boot process in order to gain access to a system.md)
• [Identify CPU/memory intensive processes, adjust process priority with renice, and kill processes](2-Operate running systems/4-Identify CPU-memory intensive processes, adjust process priority with renice, and kill processes.md)
• [Locate and interpret system log files and journals](2-Operate running systems/5-Locate and interpret system log files and journals.md)
• Access a virtual machine's console
• Start and stop virtual machines
• Start, stop, and check the status of network services
• Securely transfer files between systems

Configure local storage

• List, create, delete partitions on MBR and GPT disks
• Create and remove physical volumes, assign physical volumes to volume groups, and create and delete logical volumes
• Configure systems to mount file systems at boot by Universally Unique ID (UUID) or label
• Add new partitions and logical volumes, and swap to a system non-destructively

Create and configure file systems

• Create, mount, unmount, and use vfat, ext4, and xfs file systems
• Mount and unmount CIFS and NFS network file systems
• Extend existing logical volumes
• [Create and configure set-GID directories for collaboration](4-Create and configure file systems/4-Create and configure set-GID directories for collaboration.md)
• Create and manage Access Control Lists (ACLs)
• Diagnose and correct file permission problems

Deploy, configure, and maintain systems

• Configure networking and hostname resolution statically or dynamically
• Schedule tasks using at and cron
• [Start and stop services and configure services to start automatically at boot](5-Deploy, configure, and maintain systems/3-Start and stop services and configure services to start automatically at boot.md)
• [Configure systems to boot into a specific target automatically](5-Deploy, configure, and maintain systems/4-Configure systems to boot into a specific target automatically.md)
• Install Red Hat Enterprise Linux automatically using Kickstart
• Configure a physical machine to host virtual guests
• Install Red Hat Enterprise Linux systems as virtual guests
• Configure systems to launch virtual machines at boot
• Configure network services to start automatically at boot
• Configure a system to use time services
• [Install and update software packages from Red Hat Network, a remote repository, or from the local file system](5-Deploy, configure, and maintain systems/11-Install and update software packages from Red Hat Network, a remote repository, or from the local file system.md)
• Update the kernel package appropriately to ensure a bootable system
• Modify the system bootloader

Manage users and groups

• [Create, delete, and modify local user accounts](6-Manage users and groups/1-Create, delete, and modify local user accounts.md)
• Change passwords and adjust password aging for local user accounts
• [Create, delete, and modify local groups and group memberships](6-Manage users and groups/3-Create, delete, and modify local groups and group memberships.md)
• Configure a system to use an existing authentication service for user and group information

Manage security

• Configure firewall settings using firewall-config, firewall-cmd, or iptables
• [Configure key-based authentication for SSH](7-Manage security/2-Configure key-based authentication for SSH.md)
• Set enforcing and permissive modes for SELinux
• List and identify SELinux file and process context
• Restore default file contexts
• Use boolean settings to modify system SELinux settings
• Diagnose and address routine SELinux policy violations