{"id":2840,"date":"2019-08-30T09:18:57","date_gmt":"2019-08-30T09:18:57","guid":{"rendered":"https:\/\/www.testpreptraining.com\/tutorial\/?page_id=2840"},"modified":"2020-05-01T10:29:48","modified_gmt":"2020-05-01T10:29:48","slug":"amis-2","status":"publish","type":"page","link":"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-developer-associate\/amis-2\/","title":{"rendered":"AMIs"},"content":{"rendered":"\n<p>An AMI<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Expands to Amazon Machine Image<\/li><li>Is a configuration detail<\/li><li>provides information required to launch an instance.<\/li><li>Can launch multiple instances from a single AMI if multiple instances with same configuration is needed.<\/li><li>Use different AMIs to launch instances with different configurations.<\/li><\/ul>\n\n\n\n<p>An AMI includes<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Single or multiple EBS snapshots<\/li><li>for instance-store-backed AMIs, template for root volume of instance is stored (like OS, application server and software applications).<\/li><li>Launch permissions controlling which AWS accounts can use AMI to launch instances.<\/li><li>A block device mapping specifying volumes to attach to instance when it&#8217;s launched.<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"476\" height=\"192\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-192.png\" alt=\"\" class=\"wp-image-3827\"\/><\/figure>\n\n\n\n<p>AMI Types based on characteristics:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Region<\/li><li>Operating system<\/li><li>Architecture (32-bit or 64-bit)<\/li><li>Launch Permissions\n<ul>\n<li>public&nbsp; &#8211; all AWS accounts has launch permissions from owner<\/li>\n<\/ul>\n<ul>\n<li>explicit&nbsp; &#8211; specific AWS accounts has launch permissions from owner<\/li>\n<\/ul>\n<ul>\n<li>implicit&nbsp; &#8211; Only owner has implicit launch permissions.<\/li>\n<\/ul>\n<\/li><li>Storage for the Root Device\n<ul>\n<li>Backed by Amazon EBS &#8211; root device for an instance launched from the AMI is an Amazon EBS volume created from an Amazon EBS snapshot.<\/li>\n<\/ul>\n<ul>\n<li>Backed by instance store- root device for an instance launched from AMI is an instance store volume created from a template stored in Amazon S3.<\/li>\n<\/ul>\n<\/li><\/ul>\n\n\n\n<p><strong>Sharing AMIs<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Shared AMI is an AMI that a developer created and made available for other developers to use.<\/li><li>Using shared AMI at own risk<\/li><li>encrypted volumes AMIs cannot be made public<\/li><li>Capability for AMI sharing with AWS accounts without making it public<\/li><li>Sharing AMI by AWS CLI, can be done by modify-image-attribute command<\/li><li>Can also create a bookmark that allows a user to access AMI and launch an instance in their own account.<\/li><\/ul>\n\n\n\n<p><strong>Sharing an AMI (Console)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Open the Amazon EC2 console at https:\/\/console.aws.amazon.com\/ec2\/.<\/li><li>In the navigation pane, choose AMIs.<\/li><li>Select AMI in the list, and then choose Actions, Modify Image Permissions.<\/li><li>Enlist the AWS account number to share AMI with, in AWS Account Number field, then choose Add Permission.<\/li><\/ul>\n\n\n\n<p><strong>AMI sharing Guidelines<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Update AMI Tools Before Using Them<\/li><li>Disable Password-Based Remote Logins for Root<\/li><li>Disable Local Root Access<\/li><li>Remove SSH Host Key Pairs<\/li><li>Install Public Key Credentials<\/li><li>Disabling sshd DNS Checks (Optional)<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>An AMI Expands to Amazon Machine Image Is a configuration detail provides information required to launch an instance. Can launch multiple instances from a single AMI if multiple instances with same configuration is needed. Use different AMIs to launch instances with different configurations. An AMI includes Single or multiple EBS snapshots for instance-store-backed AMIs, template&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2476,"menu_order":6,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[491,7],"class_list":["post-2840","page","type-page","status-publish","hentry","category-amazon-aws","tag-amis","tag-aws"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>AMIs Tutorials | AWS | Testprep<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-developer-associate\/amis-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AMIs Tutorials | AWS | Testprep\" \/>\n<meta property=\"og:description\" content=\"An AMI Expands to Amazon Machine Image Is a configuration detail provides information required to launch an instance. 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