Linux Programmer | RHCE | RHCSA

Search This Blog

Wednesday, 25 January 2023

Convert MBR to GPT in AWS

 First check partition type of existing disk.

 parted -l




 

To convert MBR to GPT, create one partition with gpt and that will convert entire disk from msdos to gpt.

gdisk /dev/nvme0n1

■ n (i.e. new partition)
■ Enter (i.e Partition number : 2-128, default 2)
■ Enter (i.e. First sector : default = 34)
■ Enter (i.e. Last sector : default = 2047)
■ ef02 (i.e. Type of partition: BIOS boot partition)
■ w (i.e. Write the new partition table)
■ Y (i.e. Complete process)


Reload the partition table 


partprobe /dev/nvme0n1  

Re-install the GRUB boot loader using the new partition scheme 


grub-install /dev/nvme0n1
 

Increasing EBS volume 


growpart /dev/nvme0n1 1
resize2fs /dev/nvme0n1p1

Now Re-check the partition table created properly or not.

parted -l



CISCO AnyConnect VPN Client in Ubuntu

OpenConnect is a client for Cisco’s AnyConnect VPN. It is free software, and is released under the GNU LGPL v2.1 . Getting connected to an AnyConnect VPN is easy with OpenConnect and the TUN/TAP kernel module that is built into the Linux kernel.
 
1. First run command below to active th TUN module:
 
sudo /sbin/modprobe tun
 
2. Install OpenConnect:
 
sudo apt-get install openconnect
 
3. Connect to VPN, run:
 
sudo openconnect yourvpn.example.com
 
It prompts you to type in username and password. Once these are authenticated, the VPN connection is established.

These 15 resources will sharpen you for interviews and real production chaos

  1. Explainshell – paste any bash command, and it breaks it down word by word. No more guessing awk or sed. 2. KubeSim – browser-based Kube...