Aws ephemeral storage how to#
Aws ephemeral storage full#
Aws ephemeral storage download#

I am thinking that it is somehow a result of AWS, but it might be something more generic. rw-rw-r- 1 ubuntu 5.6G Sep 17 00:38 Ĭan anyone explain this? I have never seen anything like this before. Precisely, at the moment, this is the situation: dfįilesystem 1K-blocks Used Available Use% Mounted on I deleted all of the files (about 6GB worth) except one (which was a big 5.5GB tar file) and now I have about 6GB of free space.

Aws ephemeral storage full#

This seemed unlikely, so I checked and there were about 11GB of files on it (according to 'du') but /mnt (which contains only /mnt/build_tmp) was 100% full (according to 'df'). Attempting to write to it, it was apparently full. Now in the pod pv-recycler I could write any logic to use disk /media/disk0, it will use Instance Store Volumes under the hood and offer the best IO performance.I have an Amazon AWS instance with a storage mounted on /dev/xvdb, which is the 'usual' /mnt/build_tmp. We could declear hostPath type of volumes in kubernetes like below to mount /media/ephemeral0 in your pod container on /media/disk0Ĭommand: when the new ec2 instance managed by the defined ASG join EKS cluster, we could already have the Instance Store Volumes ready to use.Create ASG based on ASG Launch Configuration see this article for details.These commands should be placed above /etc/eks/bootstrap.sh bin/chown root:root -R /media/ephemeral0

Aws ephemeral storage how to#

I've already described how to use ASG to manage the worker nodes dynamically, when we create an ASG Launch Configuration, in the userdata section we need some command to config the ec2 nodes Different EC2 instance will have different Instance Store Volumes, I will use r3.2xlarge as an example below is the steps how I provision the Instance Store Volumes and use it in my pod.

Aws ephemeral storage download#

I have a use case which Instance Store Volumes fits us very well, I will need to launch a search server in a pod, the search server will first download the indexed file into local disk and servie online query, this is very IO sensitive service, since we could place the index file into a safe place, e.g: s3 and download it into local disk, I could use Instance Store Volumes to be mount into my pod to keep the index copy and the searchd could also access Instance Store Volumes to do real time query with the best IO performance. if we are ok about this draw back, the Instance Store Volumes could give us best IO and no additional charge of EBS.

some EC2 instance could also have Instance Store Volumes, these volumes are in the same physical server as the ec2 instance, so they usually have better performance then EBS, the draw back of Instance Store Volumes is that when EC2 instance get rebooted or shutdown, ec2 instnace may move to other host machine and the Instance Store Volumes will be lost. EBS also have different volume types, each volume type could support different type of IOPS. EKS could mount EBS as Persistent Volumes in EKS cluster, we could also declear PersistentVolumnClaim to provision PV dynamically, this is great and we could treat EBS as our EKS disk pool to claim almost unlimited disk inside kubernetes pod.