{"id":202,"date":"2014-02-23T13:09:49","date_gmt":"2014-02-23T12:09:49","guid":{"rendered":"http:\/\/www.cymbeline.ch\/?p=202"},"modified":"2014-12-23T09:22:30","modified_gmt":"2014-12-23T08:22:30","slug":"using-cloud-init-to-auto-deploy-new-ec2-instances","status":"publish","type":"post","link":"https:\/\/cymbeline.ch\/2014\/02\/23\/using-cloud-init-to-auto-deploy-new-ec2-instances\/","title":{"rendered":"Using Cloud-Init to Auto-Deploy New EC2 Instances"},"content":{"rendered":"<p>So you have a machine role that you&#8217;re auto-scaling in AWS and you want new EC2 instances to initialize automatically after their creation? <a href=\"http:\/\/directory.fsf.org\/wiki\/Cloud-init\" target=\"_blank\">Cloud-init<\/a> is here to help; it let&#8217;s you manage and configure many aspects of the machine (like installing the latest updates or missing packages). It also let&#8217;s you run any commands you want. So what else would you need to get your own bits installed? That&#8217;s right, nothing!<\/p>\n<pre class=\"brush: plain; title: user-data.txt; notranslate\" title=\"user-data.txt\">\r\n#cloud-config\r\n# Update existing packages\r\napt_update: true\r\n\r\n# Install more packages\r\npackages:\r\n- tomcat7\r\n- jq\r\n\r\n# Download the latest bits from S3, extract and setup.\r\nruncmd:\r\n- aws s3api get-object --bucket my-bits --key latest\/mybits.tar.gz mybits.tar.gz\r\n- mkdir mybits\r\n- tar xvzf mybits.tar.gz -C mybits\r\n- bash mybits\/my-own-setup-script.sh\r\n<\/pre>\n<p>In this case, the script <code>my-own-setup-script.sh<\/code> is run at the end of initialization and can make sure to deploy everything as required. All you need to do, is push a package with the latest bits onto S3 and all new instances for this role will automatically get the latest bits installed when they are created. Of course you&#8217;ll need to make sure that the machine&#8217;s IAM role is allowed access to the corresponding S3 bucket and file.<\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>So you have a machine role that you&#8217;re auto-scaling in AWS and you want new EC2 instances to initialize automatically after their creation? Cloud-init is here to help; it let&#8217;s you manage and configure many aspects of the machine (like installing the latest updates or missing packages). It also let&#8217;s you run any commands you &hellip; <a href=\"https:\/\/cymbeline.ch\/2014\/02\/23\/using-cloud-init-to-auto-deploy-new-ec2-instances\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Using Cloud-Init to Auto-Deploy New EC2 Instances&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[61],"tags":[67,69,68,70],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.13 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Initialize EC2 Instances with Cloud-init<\/title>\n<meta name=\"description\" content=\"Use Cloud-init to initialize AWS EC2 Instances after Creation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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