Tuesday, 30 April 2019

How to reslove Could not load /lib/modules" or "BusyBox" (Missing kernel modules) of EC2 server

If our EC2 server are giving the below error



FATAL: Could not load /lib/modules/2

Root Cause:-

• Missing ramdisk
• Missing correct modules from ramdisk
• Amazon EBS root volume not correctly attached as /dev/sda1

Solution:- 

A.  If server is Amazon EBS-backed:-

Use the following procedure: 

1. Select corrected ramdisk for the Amazon EBS volume. 
2. Stop the instance. 
3. Detach the volume and repair it. 
4. Attach the volume to the instance. 
5. Start the instance. 
6. Modify the AMI to use the corrected ramdisk.

B. If server is Instance store-backed:-

Use the following procedure: 

1. Terminate the instance and launch a new instance with the correct ramdisk. 

2. Create a new AMI with the correct ramdisk.

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