This is for questions on Amazon's storage service for its ec2 service.

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1answer
29 views

AWS - EC2 unable to detect EBS drives

after an unexpected restart on a windows server 2021 r2 server, the server is unable to detect the EBS drives. i have attached about 4 drives but they are invisible/not detected in device manager/disk ...
0
votes
1answer
29 views

Amazon EC2: Not able to login(RDP) to Instance after migrating root ebs volume.

I am trying to access my windows instance but I am unable to login (RDP) into it. What I have done is I have taken up a snapshot of a root EBS volume and attached that to newly launched instance. The ...
12
votes
3answers
3k views

EC2 drive not EBS volume size

I have an EC2 instance which I created a 500GB EBS volume for. Unfortunately, the EC2 instance shows only 8GB available. I have only one drive, which is right. [root@ip-10-244-134-250 ~]# ls -la ...
0
votes
0answers
21 views

Unable to create partition utilizing all sectors on an AWS EC2 instance with EBS volume

I am working on an AWS EC2 instance. I have attached an EBS volume from other instance to this machine. I want to expand root partition on the volume. I am using gdisk. Following is the output of p ...
1
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1answer
50 views

Amazon EC2 - Not able to find / mount EBS volume partition

I have a linux instance to which a ebs volumne of 20GB has been attached. The web-console volume page shows: 20 GiB gp2 snap-b3a87xyz in-use i-cd5b9999 (myinstance):/dev/sda1 (attached) The ...
4
votes
1answer
215 views

What is the size of an IO Operation (IOP) in AWS EBS?

My research suggests that both the standard and the maximum (kernel limitations) block size for modern file systems (ext4, xfs) is 4KB. However, AWS allows IO operations as large as 256KB and says ...
2
votes
2answers
916 views

Autoscaling and NFS Server

I have a WebServer say WS-1 and a NFS server say NFS-1 setup on AWS. WS-1 is being managed by an elastic load balancer and also autoscaled. It also has an EBS mounted on /var/www which contains all ...
1
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1answer
1k views

How do I shrink an EBS volume on Windows Server 2008?

I have a Windows Server 2008 instance on EC2. I need to shrink one of the drives (non-root) to a certain amount. Is there are well defined way of doing it? Thanks
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0answers
33 views

Can't create/write to file '/mnt/temp/something' (Errcode: 13)

I changed the tmp directory of the mysql configuration to a mounted disk and on service mysql restart I get following error: Can't create/write to file '/mnt/temp/something' (Errcode: 13) To my ...
0
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0answers
15 views

Amazon snapshot issue

This Question has 2 parts: 1) What snapshots can be safely removed, do I need to retain the ones from which a running instance was launched? 2) How are snapshots appearing from a shut down instance? ...
1
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1answer
33 views

Availability Zone for Elastic Block Storage

If the Availability Zone for an Elastic Block Storage (EBS) volume is us-east-1c, can I mount it on an instance in us-east-1a? If not, what is the best way to migrate the volume?
0
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1answer
24 views

How to figure out which EC2 instance an EBS Volume went with?

I discovered a few unattached, mystery EBS volumes in my AWS Console. I suspect these are leftovers from some test EC2 instances I had that I may have not noticed were NOT set to delete the volume ...
0
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1answer
41 views

Booting an EC2 instance from an existing EBS volvume

I'm just getting up to speed on AWS and had a question about using an existing EBS volume as a boot device for an EC2 instance. It looks like a lot of the instances create an EBS volume for their ...
0
votes
2answers
57 views

Is it possible to attach an Amazon RDS SSD volume to an EC2 instance?

It has been my understanding that you cannot attach an Amazon RDS SSD volume to an EC2 instance. I was under the impression that the RDS instances were a "managed" solution and that the volume was not ...
0
votes
0answers
32 views

Check Filesystem of Root Volume (Amazon Linux / RHEL)

How can I check the file system (and repair potential errors) of the root EBS volume (/dev/xvda1) of an Amazon AWS T2 instance? The instance runs the latest version of Amazon Linux (RHEL). Is it ...
0
votes
2answers
890 views

how do I find out what part of my ec2 storage is ephemeral

This may be a silly question, excuse my ignorance. I have an instance running like this: Does Root Device : EBS mean my entire system is on EBS? I've configured apache and a perl app here, all my ...
0
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0answers
63 views

AWS: Sync WWW folder between multiple load balanced instances

I am new to AWS. I am trying to setup an EC2 web server. I got the server up and running, I made the AMI (which included the WWW folder), added the load balancer etc. I terminated the original ...
0
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0answers
60 views

What would happen if I provision IOPS in RDS on a non-PIOPS-Optimized instance type?

Quote from the docs: If you are using Provisioned IOPS storage, we recommend that you use the db.m3.xlarge, db.m3.2xlarge, db.m1.large, db.m1.xlarge, db.m2.2xlarge, db.m2.4xlarge, ...
0
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2answers
114 views

crontab fails, cannot find aws executable

I am trying to run a backup script on my ec2 amazon server (ubuntu 14.04), to automatically create a snapshot of amazon ebs volumes. Therefore I am using the aws-missing-tools script: ...
0
votes
1answer
92 views

Setup of high-end web server and DB server cluster on Amazon EC2: Is this how it's done? [closed]

EC2, Amazon's Elastic Compute Cloud virtual machine service, has many configuration options. So, I want to confirm that this configuration is correct for a scalable database and web server backend. ...
0
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1answer
60 views

How can I create redundant EC2 instances when also using EBS?

I am searching for a host for a web application that must interact with a few terabytes worth of files. One solution I'm considering is to host the application on Amazon EC2 with multiple EBS ...
1
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1answer
132 views

Windows EBS Volume from snapshot at instance launch is OFFLINE

Using Powershell launching a Server 2012 R2 machine. I can launch an instance from the stock Server 2012R2 AMI with a defined new EBS volume for d: drive, and upon boot, is online, and works fine. ...
0
votes
1answer
56 views

AWS EC2 - Will I maintain SSH access launching an instance from an EBS-backed AMI?

I'm using an Ubuntu machine with Amazon's EC2 service. I've taken an EBS-backed AMI of this computer. If my current instance shuts down, when I launch an instance from the saved AMI, will I ...
3
votes
1answer
541 views

Will a SSD storage perform like a magnetic for small root volumes in AWS EC2?

I have a t1.micro instance with 8GB of magnetic EBS volume as it's root disk with a LAMP environment on it. I thought that I will upgrade it to t2.micro with 8GB of General Purpose SSD volume. ...
0
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0answers
46 views

Using ec2-import-volume with vhd already in S3

I have a vhd file that is already existing in my s3 bucket. I want to mount this as ssd/ebs backed storage on an AMI that I spin up later. I read that you can upload a vhd using ec2-import-volume to ...
1
vote
1answer
40 views

What happens when I delete the first of several AWS EBS snapshots?

On http://aws.amazon.com/ebs/pricing/ it says: "EBS Snapshots [...] For the first snapshot of a volume, Amazon EBS saves a full copy of your data to Amazon S3. For each incremental snapshot, only ...
1
vote
2answers
70 views

Do several EBS drives really improve overall disk throughput?

On m3.xlarge instance (EBS Optimized – True) : There are two EBS disks: /mnt/data0, /mnt/data1 Single dd: dd bs=1M count=1024 if=/dev/zero of=/mnt/data0/test conv=fdatasync 1024+0 records in ...
0
votes
2answers
83 views

How to select snapshot for root EBS volume

I have a custom AMI, with a corresponding EBS snapshot, made some time earlier. Recently, I have decided to create a newer EBS snapshot to reflect some software updates. Then I wanted to submit a spot ...
1
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1answer
101 views

AWS give Apache permission to write to different EBS volume

I have an EC2 instance that is running Apache and my website (php files) is also on that EC2 instance. Website users will be able to upload and download files and I would like to store (user uploaded) ...
0
votes
1answer
56 views

Backing up an EC2 EBS Windows volume offline

I would like to backup offline a Windows EC2 EBS Volume, i.e. on my computer and not in the cloud. Note I can stop the instance and detach the EBS volume if needed. Is it at all possible with Amazon's ...
8
votes
3answers
5k views

Root Device on SSD instance types. SSD vs EBS confusion

I have an AMI that was originally created from a t1.micro linux. The "Root Device Type" of this AMI is EBS (8 GB) and my web application software is "baked" into this root volume. Now I would like to ...
2
votes
3answers
1k views

EC2 EBS AMI Instance stopping/restarting doesn't start services

I've recently been moving our instances to EBS instances (CentOS) and still have a bit of confusion on what's happening when I "stop" and instance. I have some of my services with runlevels 345 on but ...
1
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1answer
126 views

No primordial pool in 2012R2 on AWS with EBS disks

I'm trying to experiment with storage pools on Amazon's new 2012R2 AMI. I've created several EBS volumes and attached them to the instance. In the Server Manager I brought them online and ...
0
votes
1answer
85 views

Bootstrap not mounting EBS volume

I'm running the following when Bootstrapping an Ubuntu 12.04 EC2 instance: mkfs.ext4 /dev/xvdf mkdir /vol01 echo "/dev/xvdf /vol01 auto noatime 0 0" | tee –a /etc/fstab mount /vol01 It formats the ...
1
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0answers
68 views

Can I use ZFS to replicate (fast) EC2 instance store to (slow) EBS store?

I love the idea of using SSD EBS instance stores as L2ARC and ZIL for a zpool backed by EBS. Going further (and into more dangerous territory), could I instead create a zpool mirror with the 2 ...
0
votes
1answer
317 views

Installing ElastiCache Cluster Client on PHP AWS Elastic Beanstalk (without creating resource)

Elastic Beanstalk does not, by default, install the ElastiCache Cluster Client PHP module. This is needed to connect to an ElastiCache node cluster. Reading around, most of the instructions relate to ...
0
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0answers
148 views

Can't mount bin/iso image from AWS import/export service

A client sent a 2 TB drive to AWSs import/export service; AWS put it in an S3 bucket in two chunks. I catted the two chunks together as an iso file, and tried to mount it, using the directions listed ...
0
votes
1answer
110 views

The disk that shows up on AWS EC2 instance - where is it coming from (among the AWS EBS volumes)?

I have a running AWS EC2 instance (Ubuntu 12.04.4 LTS). When I ssh into that instance and do a 'df -h', I see the following: Filesystem Size Used Avail Use% Mounted on /dev/xvda1 99G ...
2
votes
2answers
1k views

Encrypting Amazon EBS Snapshots

Would love it if someone could help me out with this: The setup is a distributed LAMP architecture hosted on Amazon EC2 instances. MySQL Percona. We use Amazon's EBS snapshots for backups. We have ...
0
votes
1answer
235 views

Backup Mongodb on EC2 through EBS snapshots - timing issue

I'm following this guidance http://docs.mongodb.org/ecosystem/tutorial/backup-and-restore-mongodb-on-amazon-ec2/ I have 4 EBS 1000 IOPS volumes assigned to instance These 4 volumes through MDADM ...
1
vote
1answer
209 views

Does taking EBS snapshots supposed to significantly slow down the performance of the EBS volume?

I'm trying to decide on the frequency of making snapshots. Is the AWS system designed in such a way that taking snapshots has a negligible effect on the performance of the volume, or can it ...
0
votes
1answer
96 views

Selecting an EBS Volume as Root for EC2 instance

When launching an EC2 instance you have the option to select storage for your system but it seems to automatically choose a root volume for you. Is there a way to choose a root volume from among your ...
2
votes
2answers
230 views

Monitor AWS EC2 volume capacity

I have a EC2 Ubuntu server instance with a 15GB volume, running a web service. The web service is logging to date-formatted files which are pruned after 7 days. The load on the server is still low, ...
18
votes
2answers
5k views

Shrinking Amazon EBS volume size

I have seen this answer for growing EBS volumes, but I would like to shrink one. The default Ubuntu Server images are 15 GB while I really need only 2 GB max (I use a different volume for data). Is ...
0
votes
1answer
92 views

Convert Windows Amazon EBS Instance backed to EBS

I've come across plenty of how-to's for this that deal with Linux (and back in 2010 when not all tools were available on the EC2 web interface) but none that deal with Windows (that work). I've tried ...
1
vote
1answer
257 views

Is it safe to snapshot an mdadm RAID with only xfs_freeze?

Is mdadm guaranteed (and trusted via experience) to be safe for taking snapshots with only an xfs_freeze? I have encountered vague warnings about mdadm still working in the background, thus making ...
-2
votes
1answer
60 views

Amazon EBS Durability

According to this link: http://aws.amazon.com/ebs/details/#availabilityanddurability It said: Amazon EBS Snapshot can expect an annual failure rate (AFR) of between 0.1% – 0.5%, where failure ...
1
vote
2answers
703 views

Automate Amazon EBS Snapshot creation?

Once in a while I would go to http://aws.amazon.com/console and manually right click my EBS volume and create a snapshot. This is kind of tedious and I would forget sometimes. Is it possible to ...
2
votes
2answers
751 views

Efficient plan for backing up EC2 instance, EBS volumes and RDS DBs

I have an EBS-based EC2 instance (ebs_vol_1) which mounts and extra EBS volume (ebs_vol_2), and DB in RDS. Is tacking a snapshot of ebs_vol_1 & ebs_vol_2, enough for preventing data-loss? Is ...
6
votes
5answers
3k views

Automated snapshots of EBS-backed EC2 instance running Ubuntu

I'm running an EBS-backed instance which acts as a software development team's build server (running Jenkins and host of other services). The server is running Linux (latest Ubuntu from the official ...