Azure Classroomnotes 30/Nov/2022

Mounting Data disks on Azure Linux VMs

• Linux Popular file system:
  • xfs
  • ext4
  • btrfs
  • zfs
• Lets create a linux vm
  • Refer Here for official docs
  • list block devices on b1s
    
  • lets attach an additional data disk
    
  • Lets format the disk with xfs file system and mount it on to some folder
    
    
  • Now lets add some files to it
    
  • Lets shutdown the vm and start the vm back. Login in and execute df -h
    
  • In linux systems mount command is valid only for that session.
  • To make mounts permenent we need to add entries in a file /etc/fstab Refer Here to this section for making entries
  • Make a note of blkid for data disk /dev/sdc: UUID="91bebe03-1031-4383-925b-47744a6ca70a" TYPE="xfs"
  • Now add an entry into /etc/fstab
    UUID=91bebe03-1031-4383-925b-47744a6ca70a /additional xfs defaults,nofail 1 2
  • Now shutdown and start or (restart)
    
  • To expand disk sizes Refer Here Refer Here

Azure File Share

• This is a storage that can be used by multiple linux, windows and mac instances present on cloud or on-premises
  
• Refer Here
• Standard File share
  • Create a storage account with standard (general purpose)
  • Add a file share
    
    
  • Now click on connect
    
    
  • mount to linux
    
• Script for linux to connect to file share

sudo mkdir /tools
if [ ! -d "/etc/smbcredentials" ]; then
sudo mkdir /etc/smbcredentials
fi
if [ ! -f "/etc/smbcredentials/forfilesqt.cred" ]; then
    sudo bash -c 'echo "username=forfilesqt" >> /etc/smbcredentials/forfilesqt.cred'
    sudo bash -c 'echo "password=0UERpDrw5Ddr3CBxgatfqa8S9S9okNGvJ9xl3pMAN4GweOMOYtQahtPA3EvU+9xitn35fhn8d1Ye+AStVhtTig==" >> /etc/smbcredentials/forfilesqt.cred'
fi
sudo chmod 600 /etc/smbcredentials/forfilesqt.cred

sudo bash -c 'echo "//forfilesqt.file.core.windows.net/tools /tools cifs nofail,credentials=/etc/smbcredentials/forfilesqt.cred,dir_mode=0777,file_mode=0777,serverino,nosharesock,actimeo=30" >> /etc/fstab'
sudo mount -t cifs //forfilesqt.file.core.windows.net/tools /tools -o credentials=/etc/smbcredentials/forfilesqt.cred,dir_mode=0777,file_mode=0777,serverino,nosharesock,actimeo=30