Once you expand the root disk i.e. /dev/xvda to desired size, may i know how to create custom filesystem partitions (/var, /home/, /var/log etc) on a AWS EBS disk during boot process using hashicorp packer? Is it possible and did anyone try this?
On Friday, August 18, 2017 at 9:49:06 AM UTC+12, [email protected] wrote: > > Hi, > > Really sorry to be asking this because I can see there are previous > threads, e.g. "Configuring size of root volume on EC2" but they actually > don't provide a clear answer and neither do the docs. > > I'm building an AMI using the amazon-ebs builder. The reference AMI is a > Debian stretch image with an 8GB root volume. The source images use > /dev/xvda1 as the root partition. > > I'd like my packer image to have a much larger volume, e.g. 40GB. Previous > threads indicate this should be possible by adding: > > "ami_block_device_mappings": [ { > "device_name": "/dev/xvda", > "volume_size": 40, > "delete_on_termination": true > } ], > "launch_block_device_mappings": [ { > "device_name": "/dev/xvda", > "volume_size": 40, > "delete_on_termination": true > } ] > > It's not clear to me what the distinction between > ami_block_device_mappings and launch_block_device_mappings is. What what I > understand of the docs they should be used when I want to add additional > devices beyond the root vol, but the discussion in the other thread > suggests using the code above is used to modify the root volume size. > > I don't fully understand what it's doing, but more to the point, I can't > make it work. > > The reference image boots from /dev/xvda1, so presumably I need > > "device_name": "/dev/xvda" > > > but that throws this error: > > The device 'xvda' is used in more than one block-device mapping > > So, what device should I use is the source AMI is using /dev/xvda1 as root > partition and what the difference between the two mappings? > > (I know I may need to deal with fs resize, but I'll get to that when it's > a problem) > > Many Thanks, > > Rich > -- This mailing list is governed under the HashiCorp Community Guidelines - https://www.hashicorp.com/community-guidelines.html. Behavior in violation of those guidelines may result in your removal from this mailing list. GitHub Issues: https://github.com/mitchellh/packer/issues IRC: #packer-tool on Freenode --- You received this message because you are subscribed to the Google Groups "Packer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/packer-tool/310d491b-ee58-4626-adf4-3e071b0469fe%40googlegroups.com.
