Tagged Questions

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

learn more… | top users | synonyms (1)

1
vote
0answers
8 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 ...
1
vote
1answer
24 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
193 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 ...
1
vote
0answers
16 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
votes
0answers
11 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
vote
1answer
30 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
votes
1answer
20 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
votes
1answer
30 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
49 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
24 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
0answers
52 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
votes
0answers
40 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
votes
2answers
73 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
46 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 ...
2
votes
1answer
354 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. ...
1
vote
1answer
97 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
54 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 ...
0
votes
0answers
37 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 ...
0
votes
1answer
85 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. ...
1
vote
1answer
34 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 ...
0
votes
2answers
77 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
vote
2answers
67 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 ...
1
vote
1answer
80 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
51 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 ...
1
vote
0answers
66 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
0answers
123 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
87 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 ...
1
vote
1answer
113 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
213 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 ...
0
votes
1answer
90 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
208 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, ...
0
votes
1answer
84 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 ...
-2
votes
1answer
52 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 ...
-3
votes
2answers
85 views

Detatch an EBS volume from one instance and attach to another [closed]

If I detatch an EBS volume from an EC2 instance and then attach it to another newly created EC2 instance, would that be okay? If it would work then would I need to install any libraries like PHP, ...
0
votes
1answer
516 views

Heartbleed testing tools do not recognize reissued certificates (PositiveSSL Wildcard + Amazon ELB)

In response to the Heartbleed news, I have upgraded OpenSSL on my production server and am now trying to reissue the SSL certificate. I am using a PositiveSSL Wildcard certificate on an Amazon ELB. I ...
0
votes
2answers
149 views

Adding EBS volume to Amazon EC2 server. Do I need to?

So I created a free-tier Amazon EC2 ubuntu 12.04 instance. I set up a LAMPP stack on it and use it for a couple of testing websites. Currently all the data is stored on the server itself, including ...
0
votes
1answer
48 views

MySQL Replication across two mounts on AWS Amazon Linux

Recently we took advantage of the SSD instance stores available on AWS. While these are great, they obviously get deleted when the instance dies. Obviously the performance of non Provision IOPS is ...
0
votes
1answer
106 views

Single ec2 instance with multiple mySQL databases on separate EBS volumes

I have a single ec2 instance on which I am running multiple separate wordpress sites. I want to store the database for each separate site on it's own mounted ebs volume, so that I can handle the db ...
-1
votes
1answer
77 views

is there a maximum size limit on the root drive while creating a new EC2 instance? [closed]

say, if I setup a windows server 2012 instance, is there a maximum size limit on the C drive?
2
votes
1answer
710 views

EC2 AMI Image from a running instance vs. from a snapshot taken from a running instance

I want to backup a Linux-based EC2 instance while it is running with no downtime, and then later on launch a new instance. (The instance is running a web server and Postgres database.) I found there ...
0
votes
1answer
195 views

Anyway to determine Amazon Machine Image (Creation Date)?

I am trying to see if anyone knows how to identify the creation date for Amazon Machine Image(s)? I have looked all through the documentation on the AWS site, and do not see anything. The only ...
2
votes
3answers
293 views

Backup EC2 instances

I found a lot of questions to this topic already, but I'm still not 100% sure what's the best approach to do so. The option I'd prefer is using EBS snapshots. The pros would be that I can spin up a ...
1
vote
0answers
58 views

How to restore a dd image to an EBS volume

I have a local dd image myimage.bin, which I want to use to create an AWS EBS volume. The only way I can figure out how to do this is to, 1) Launch an AWS instance 2) Create and attach an EBS ...
0
votes
1answer
305 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 ...
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 ...
0
votes
1answer
137 views

How do I create a instance store backed AMI, from EBS backed AMI?

I was on to task of creating a new CentOS 6.4 AMI and started with CentOS market place image. To my surprise I found that CentOS has only released AMI's with EBS backed stored and there is no instance ...
0
votes
0answers
97 views

confused by iostat reporting striped mdadm more tps than aggregate volumes

I've got an mdadm striped device (/dev/md0) from /dev/sdm{1..4}. Here is an output of iostat 30 and then mdadm --detail on the mdadm device # iostat 30 Linux 2.6.32-309-ec2 (ip-xx-xx-xx-xx) ...
1
vote
1answer
37 views

Snapshots - where are they running from?

I have an odd 'issue'. And I feel a little dumb asking. Just after Christmas, 2013, I added a cronjob on one of my EC2 instances to snapshot all of my EBS volumes that had a tag where backup=true, ...
0
votes
0answers
49 views

What's the best way to increase the provisioned IOPS of an optimized EBS volume?

I can create a snapshot and then create a new volume with the increased IOPS with that snapshot. The question is if a faster way to do that exists.
1
vote
2answers
232 views

Any issues with filesystem-only backups on PostgreSQL?

I am running my DB server in amazon cloud, and I have the database files on a separate EBS volume. When it comes to backup/restore operations, I found it infinitely simpler to just do a ...