WILY (What I Learnt Yesterday)
2024
01,January,2024

01,January,2024

2024-01-02

  • LVM – Logical Volume Management.

    • Concepts of Physical Volumes,Volume Groups,Logical Volumes.

    • sudo lvmdiskscan

    • Creating physical volume using physical drives

      sudo pvcreate /dev/sda /dev/sdb

    • Creating Volume groups sudo vgcreate /dev/sda /dev/sdb

    • Creating Logical Volumes within the volume groups

          sudo lvcreate -L 10G -n projects LVMVolGroup
    sudo lvcreate -L 5G -n www LVMVolGroup
   sudo lvcreate -L 20G -n db LVMVolGroup

  • Golang

    • Package import,multiple package import
    • Exported names starting with capital letters.
    • Functions: function definition,function parameters,shortening function parameters,return types, named return types,

2024-01-03

  1. LVM

    • Formatting and Mounting a logical volume
    sudo mkdir -p /mnt/{backup,college-data}
sudo mount /dev/VolGrpLvm/backup /mnt/backup/
sudo mount /dev/VolGrpLvm/college-data /mnt/college-data/
    • Renaming a logical Volume
    sudo lvrename /dev/VolGrpLvm/college-data /dev/VolGrpLvm/college
    • Extending a logical Volume
    sudo lvextend -L+5G /dev/VolGrpLvm/backup ``` ```sudo lvextend -L25G /dev/VolGrpLvm/backup
    • Shrinking a logical volume
    sudo lvreduce  -L20G /dev/VolGrpLvm/backup
    • Removing an logical volume
    sudo lvremove /dev/VolGrpLvm/backup
    • LVM Stripping
    sudo lvcreate -L 10G -i2 -I64 -n backup1 VolGrpLvm
    • LVM Mirroring
    sudo lvcreate -L 5G -m1 -n mirrorLV VolGrpLvm
    • ThinPool and Thin provisioning
    sudo lvcreate --thinpool vg_thin/thin_pool --name volume_1 --virtualsize 3G

  2. Golang

2024-01-04

  • Network File System(NFS)

    • Here is the link to the document
    • Installing NFS server and setting directory permissions to 777
    • Configuring Export directory by editing the file /etc/exports
    • Options to configure the NFS server,either readonly or read write, sync or async,subtree check.
    • Exporting the shared directory using exportfs command
    • Configuring firewall ufw to allow clients to access the shared folder.
    • Configuring client using nfs-common package
    • Creating mountpoints on the client side to access the shared folder.
    • Mounting the folder using mount command or adding the entry to /etc/fstab

2024-01-09

Solved exercises of Odin Project for the String Exercices & Basic Data Types

2024-01-18

  • Guake load preferences from config file
    • guake --restore-preferences ~/Downloads/guake_prefs
  • Python Introduction learing
02,February 2024