Attaching disks
- We can attach disks to vm instance from the same availability zone
- From disks we can create images, these images can be used as custom images while create a vm instance
- Lets create one more disk
- While creating the vm instance in the same zone as the disk created above we can attach this disk to the vm
- Now lets format the sdb, mount the disk to some folder
sudo mkfs -t ext4 /dev/sdb
sudo mkdir /learning
sudo mount /dev/sdb /learning
sudo df -h
- To make this mount permanent, we need to know blkid
- Now add the below line to /etc/fstab
UUID=89fd5932-d285-4547-85f3-50cbf88dd45e /learning ext4 defaults,nofail 1 2
- After this restart the vm instance and execute
sudo df -h
Startup Scripts
- When creating the vm instance we can also set a startup script. This is the script that runwhen instance boots up or restarts.
- So now lets write the startup script to install apache server
#!/bin/bash
sudo apt update
sudo apt install apache2 -y
- Exercise: Create a vm instance to setup lamp stack on startup
#!/bin/bash
sudo apt update
sudo apt install apache2 -y
sudo apt install php libapache2-mod-php php-mysql php-cli -y
echo "<?php phpinfo(); ?>" | sudo tee -a /var/www/html/info.php
Next Steps:
- Working with VM Meta data
- Preventing Accidental vm deletion
