Op dinsdag 15 september 2009 01:29:09 schreef CaptTofu: > * Having the certificate requests for these new instances > automatically signed > * Creating a new node for a new instance, once it is up and I know the > host/ip. As you know, you don't know that until Amazon assigns this. > How could I automate this? My first impulse is to write Perl or Ruby > code to write a nodes.pp file, but I'm guessing there is a better way > to do this (???)
I have puppet configuring all my EC2 images from (almost) scratch to do whatever it is they should be doing. I only have a single node definition for all of them, and use --fqdn to force them to all pretend to be the same node to the puppetmaster. To distinguish the images from each other, I use the user data, and made a factor plugin that will pull that in as 'key=value'. The node description then uses those variables to work out what to do, basically with a lot of if statements. As all our EC2 servers are simple variations on a theme (glassfish Java application servers running a webapp backed with postgresql), it's quite effective. About 20 minutes after startup, all going well, the instance is completely configured and running (it takes a while as it's pulling a lot of small things over a fairly high-latency connection.) The plugins and some other misc scripts are here: https://code.launchpad.net/~eythian/+junk/ec2facts an example of what I put in the user data is: inst_glassfish=true inst_apache2=true inst_apache2ssl=true inst_postgresql=true apache_domain=my.domain.com apache_template=default gf_appcontext=context gf_apps3path=s3bucket/path/webapp.war pg_database=dbname pg_db_username=username pg_db_password=password pg_db_backup=s3bucket/backup/location gf_connpool=ConnectionPool gf_jdbcname=jdbc/TheDB gf_autoredeploy=false ebs_volume_id=vol-12345678 gf_restartondeploy=true -- Robin <ro...@kallisti.net.nz> JabberID: <eyth...@jabber.kallisti.net.nz> http://www.kallisti.net.nz/blog ||| http://identi.ca/eythian PGP Key 0xA99CEB6D = 5957 6D23 8B16 EFAB FEF8 7175 14D3 6485 A99C EB6D
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