AWS/EC2 - Revision history

Christoph: /* Elastic Compute Cloud (EC2) */

2017-04-07T16:29:28Z

‎Elastic Compute Cloud (EC2)

Christoph: /* Elastic File System (EFS) */

2017-02-10T20:32:35Z

‎Elastic File System (EFS)

Christoph at 20:31, 10 February 2017

2017-02-10T20:31:55Z

Christoph: /* EC2 metadata */

2017-02-10T18:43:00Z

‎EC2 metadata

Christoph: /* Elastic Compute Cloud (EC2) */

2017-02-10T18:38:10Z

‎Elastic Compute Cloud (EC2)

Christoph at 01:03, 9 February 2017

2017-02-09T01:03:28Z

Christoph: /* Elastic Block Storage (EBS) */

2017-02-09T00:30:21Z

‎Elastic Block Storage (EBS)

Christoph at 23:52, 8 February 2017

2017-02-08T23:52:45Z

Christoph at 22:59, 8 February 2017

2017-02-08T22:59:11Z

Christoph: /* Elastic Compute Cloud (EC2) */

2017-01-31T00:43:48Z

‎Elastic Compute Cloud (EC2)

@@ Line 32: / Line 32: @@
 ** G for Graphics
 ** F for FPGA
-** P for general purpose GPU (this "pics")
+** P for general purpose GPU (think "pics")
 ** X for Extreme memory
 ** mnemonic: <code>DIRTMCGFPX</code> (or, "Dr Mc GIFT PX" => "Doctor McGift Pix" => gives out free pictures)

@@ Line 213: / Line 213: @@
 * Mount your file system using the DNS name. The following command looks up your EC2 instance's AZ using the EC2 instance metadata URI <code>169.254.169.254</code>, then mounts the file system using the DNS name for that AZ (note: replace <code>fs-00000000</code> with your actual EFS ID):
-  $ sudo mount -t nfs4 $(curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone).fs-00000000.efs.us-west-2.amazonaws.com:/ /efs
+  $ sudo mount -t nfs4 $(curl -s <nowiki>http://169.254.169.254/latest/meta-data/placement/availability-zone).fs-00000000.efs.us-west-2.amazonaws.com:/</nowiki> /efs
 ==Amazon Machine Image (AMI)==

@@ Line 134: / Line 134: @@
   $ curl <nowiki>http://169.254.169.254/latest/meta-data/public-ipv4</nowiki>
 .36.123.34
 ==Elastic Block Storage (EBS)==
@@ Line 179: / Line 192: @@
 *** Solution#2: Unmount the RAID array
 *** Solution#3: Shut down the associated EC2 instance, take a snapshot, then start up the instance again.
 ==Amazon Machine Image (AMI)==
@@ Line 216: / Line 251: @@
 By default, root volumes on either AMI type will be deleted on termination. However, with EBS volumes, you can tell AWS to keep the root device volume.
 [[Category:AWS]]

@@ Line 104: / Line 104: @@
 ===EC2 metadata===
-  $ curl http://169.254.169.254/latest/meta-data/
+:SEE: [http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html for details]
 <pre>
 ami-id
@@ Line 128: / Line 130: @@
 security-groups
 </pre>
 ==Elastic Block Storage (EBS)==

← Older revision		Revision as of 18:38, 10 February 2017
Line 101:		Line 101:

	* [http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html EC2 metadata]: data about your instance that you can use to configure or manage the running instance.		* [http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html EC2 metadata]: data about your instance that you can use to configure or manage the running instance.
		+
		+	===EC2 metadata===
		+
		+	$ curl http://169.254.169.254/latest/meta-data/
		+	<pre>
		+	ami-id
		+	ami-launch-index
		+	ami-manifest-path
		+	block-device-mapping/
		+	hostname
		+	instance-action
		+	instance-id
		+	instance-type
		+	local-hostname
		+	local-ipv4
		+	mac
		+	metrics/
		+	network/
		+	placement/
		+	product-codes
		+	profile
		+	public-hostname
		+	public-ipv4
		+	public-keys/
		+	reservation-id
		+	security-groups
		+	</pre>

	==Elastic Block Storage (EBS)==		==Elastic Block Storage (EBS)==

← Older revision		Revision as of 00:30, 9 February 2017
Line 133:		Line 133:

	In order to enable encryption at rest using EC2 and Elastic Block Store, one needs to configure encryption when creating the EBS volume.		In order to enable encryption at rest using EC2 and Elastic Block Store, one needs to configure encryption when creating the EBS volume.
		+
		+	* RAID (Redundant Array of Independent Disks)
		+	** RAID 0 - Striped, no redundancy, good performance
		+	** RAID 1 - Mirrored, redundancy
		+	** RAID 5 - Good for reads, bad for writes. AWS does ''not recommend ever'' putting RAID 5's on EBS
		+	** RAID 10 (RAID 1 + RAID 0) - Striped & mirrored. Good redundancy, good performance.
		+	** On AWS, use either RAID 0 or RAID 10. Useful for increasing disk I/O.
		+	** How to take a snapshot of a RAID array?
		+	*** Problem: Take a snapshot, the snapshot excludes data held in the cache by applications and the OS. This tends not to matter on a single volume, however, using multiple volumes in a RAID, this can be a problem due to the inter-dependencies of the array.
		+	*** Solution: Take an application consistent snapshot (i.e., stop the application from writing to disk and flush all caches to the disk).
		+	*** Solution#1: Freeze the file system
		+	*** Solution#2: Unmount the RAID array
		+	*** Solution#3: Shut down the associated EC2 instance, take a snapshot, then start up the instance again.

	[[Category:AWS]]		[[Category:AWS]]

← Older revision		Revision as of 23:52, 8 February 2017
Line 74:		Line 74:

	With EC2 you can have 2 types of storage: EBS storage and Instance Store. EBS is persistent and if an EC2 instance is stopped with an EBS volume attached, there will be no data lost. Instance Store is ephemeral and if the EC2 instance is stopped, all data will be lost.		With EC2 you can have 2 types of storage: EBS storage and Instance Store. EBS is persistent and if an EC2 instance is stopped with an EBS volume attached, there will be no data lost. Instance Store is ephemeral and if the EC2 instance is stopped, all data will be lost.
		+
		+	* EC2 status checks:
		+	** System Status Checks: These checks monitor the AWS systems required to use this instance and ensure they are functioning properly.
		+	**: These checks verify that your instance is reachable. They test that Amazon is able to get network packets to your instance.
		+	**: If these checks fail, there may be an issue with the infrastructure hosting your instance (such as AWS power, networking, or software systems). You may need to restart or replace the instance, wait for Amazon systems to resolve the issue, or seek technical support.
		+	**: These checks do ''not'' validate that your operating system and applications are accepting traffic.
		+	** Instance Status Checks: These checks monitor your software and network configuration for this instance.
		+	**: These checks verify that your instance's operating system is accepting traffic.
		+	**: If these checks fail, you may need to reboot your instance or make modifications to your operating system configuration.
		+
		+	* EC2 monitoring (via CloudWatch):
		+	** Default (free): every 5 minutes
		+	** Detailed (not free): every 1 minute
		+
		+	* Security Groups
		+	** These are "virtual firewalls"
		+	** All inbound traffic is blocked by default
		+	** All outbound traffic is allowed by default
		+	** 1 instance can have one or more security groups associated with it
		+	** Changes to security groups take effect ''immediately''.
		+	** Security groups are '''stateful''' (i.e., if you create an inbound rule allowing traffic in, that traffic is automatically allowed back out again). NOTE: ACLs are stateless.
		+	** You can have any number of EC2 instances within a security group.
		+	** You can have multiple security groups attached to EC2 instances.
		+	** You cannot block specific IP addresses using security groups; instead use Network Access Control Lists.
		+	** You can specify ALLOW rules, but ''not'' DENY rules.
		+
		+	* [http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html EC2 metadata]: data about your instance that you can use to configure or manage the running instance.

	==Elastic Block Storage (EBS)==		==Elastic Block Storage (EBS)==

@@ Line 1: / Line 1: @@
-==Elastic Block Storage (EBS)==
+==Elastic Compute Cloud (EC2)==
-: SEE: [https://aws.amazon.com/ebs/faqs/ Amazon EBS FAQs]
+: SEE: [https://aws.amazon.com/ec2/faqs/ Amazon EC2 FAQs]
 Amazon Elastic Compute Cloud (EC2) is a web service that provides re-sizable compute capacity in the cloud. EC2 reduces the time required to obtain and boot new server instances to minutes, allowing you to quickly scale capacity (both up and down), as your computing requirements change.
 Amazon EC2 changes the economics of computing by allowing you to pay only for capacity that you actually use. EC2 provides developers the tools to build failure resilient applications and isolate themselves from common failure scenarios.
 * EC2 provision types:
@@ Line 90: / Line 74: @@
 With EC2 you can have 2 types of storage: EBS storage and Instance Store. EBS is persistent and if an EC2 instance is stopped with an EBS volume attached, there will be no data lost. Instance Store is ephemeral and if the EC2 instance is stopped, all data will be lost.
 [[Category:AWS]]

@@ Line 25: / Line 25: @@
 ** On-Demand: Allows you to pay a fixed rate by the hour with no commitment.
 ** [https://aws.amazon.com/ec2/purchasing-options/reserved-instances/ Reserved]
-*** Reserved: Amazon EC2 Reserved Instances allow you to reserve Amazon EC2 computing capacity for 1 or 3 years, in exchange for a significant discount (up to 75%) compared to On-Demand instance pricing (must pay for entire reserved period up-front).
+*** Amazon EC2 Reserved Instances allow you to reserve Amazon EC2 computing capacity for 1 or 3 years, in exchange for a significant discount (up to 75%) compared to On-Demand instance pricing (must pay for entire reserved period up-front).
 ** [https://aws.amazon.com/ec2/spot/ Spot]
 *** Amazon EC2 Spot instances allow you to bid on spare Amazon EC2 computing capacity. Since Spot instances are often available at a discount compared to On-Demand pricing, you can significantly reduce the cost of running your applications, grow your application's compute capacity and throughput for the same budget, and enable new types of cloud computing applications.
@@ Line 43: / Line 43: @@
 ** I for IOPS (e.g., i2)
 ** R for RAM
-** T general purpose (e.g., t2.micro)
+** T for general purpose (e.g., t2.micro)
 ** M for Main choice (for general purpose apps)
 ** C for Compute
 ** G for Graphics
-** mnemonic: <code>DIRTMCG</code>
+** F for FPGA
 <div style="float:left; margin:0px 20px 20px 0px;">