Today we are setting up a rsyslog server, very simple and fun.
Redhat linux
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https://www.youtube.com/watch?v=qb9Akkfn_4E
In this video, we dive deep into the world of Linux storage management, focusing on the Device Mapper and its powerful role in managing disk storage with Logical Volume Manager (LVM) as our primary example.
One key aspect we cover is the distinction between Gigabytes (GB) and Gibibytes (GiB) - a crucial detail when working with storage sizes. LVM displays storage sizes in Gibibytes (GiB), not Gigabytes (GB), aligning with the binary system that computers inherently use. This difference is not just academic; it has practical implications for understanding the true capacity and allocation of your storage resources.
A Gibibyte (GiB) equals 230230 bytes or 1,073,741,824 bytes, compared to a Gigabyte (GB), which equals 109109 bytes or 1,000,000,000 bytes. This means that when LVM reports storage sizes, it’s providing a more precise measurement that reflects the actual binary-based usage of disk space, ensuring you have accurate data for managing and optimizing your storage solutions.
Stay tuned as we explore how Device Mapper facilitates the creation, mapping, and management of virtual disk devices, making LVM a powerful tool for flexible disk storage management. Whether you're a seasoned system administrator or just starting out, understanding these concepts is key to mastering Linux's storage capabilities
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https://www.youtube.com/watch?v=rmU-B21FM3M
What is load averages? This video explains what they are and how to read them. Load averages are in 1 min, 5 min, and 15 min marks. This shows the Load on the server.
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https://www.youtube.com/watch?v=JPsf29fXbHA
Learn how to use crontab and at jobs in linux
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https://www.youtube.com/watch?v=FDllmPEuMLE
This video goes over linux modules.
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https://www.youtube.com/watch?v=KX0sYR9vev0
We will be going a lab and complete these objecctives.
Use the credentials and server IP to log in to our lab server. Run sudo -i to become root once you've logged in.
We've been tasked with creating a large logical volume out of the two disks attached to this server. The Volume Group name should be RHCSA. The Logical Volume name should be pinehead and should be 3 GB in size.
Make sure that the resulting logical volume is formatted as XFS and persistently mounted at /mnt/lvol.
After that is complete, we should grow the logical volume and the filesystem by 200 MB.
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https://www.youtube.com/watch?v=RxkUD9eNwJE