Linux partition management on AWS

attach-new-hdd.sh

fdisk -l 

# CentOS 6 uses ext4 as a default filesystem
mkfs.ext4 /dev/xvdj

# CentOS 7 uses xfs as a default filesystem
mkfs.xfs /dev/xvdj


vim /etc/fstab

# /dev/xvdj  /root/sonatype-work  ext4  defaults,acl  0  0

expand-partition-on-aws-linux.sh

# references
# [Resizing Root Partition on Linux in Amazon EC2](https://linuxacademy.com/blog/linux/resizing-root-partition-on-linux-in-amazon-ec2/)

# 1. create a snapshot of the old hdd
# 2. create a new volume which has a more storage than the old one from the snapshot
# 3. check the new partition name you want to expand by running
lsblk

# 4. expand the hdd on the fly
resize2fs /dev/xvde

when-you-get-disk-permission-error-from-nagios-disk-check-plugin.sh

# When you are getting an error message from Nagios Disk Check plugin like:
# DISK CRITICAL - /root/sonatype-work is not accessible: Permission denied 

vim /etc/fstab

# check if `acl` option is appended or not just like:
# /dev/xvdj  /root/sonatype-work  ext4  defaults,acl  0  0

# add `acl`and remount the device