Wednesday, October 24, 2012
I have finally battled the beast of getting Openvpn set up on VPC to access both public AND private subnets. There is one thing not mentioned in any of the tutorials I found that is critical. When you install OpenVPN, and it is configured for NAT, it will use a private subnet for the vpn clients on 188.8.131.52/20, which you must add a route for under VPC-> route tables -> new -> destination -> 184.108.40.206/20 -> associate (enter your subnet ID) Now when clients VPN in with openVPN, they can contact everyone on both subnets. Don't forget to allow the traffic in using the security groups both inbound and outbound as well, such as ICMP ping, so you can test communications properly (and whatever services you need). helpful links: Using from linux: http://openvpn.net/index.php/access-server/docs/admin-guides/182-how-to-connect-to-access-server-with-linux-clients.html video tutorial (great, except the route part is missing) http://dbsgkhvbz3k7m.cloudfront.net/AmazonVPC/AmazonVPC.html happy routing!
Thursday, October 18, 2012
Sunday, October 14, 2012
Heading out to speak at SpringOne2GX in DC today. I'll be giving 2 talks, 'Streaming Video in Grails' (Using the formerly 'grails-video' plugin now called 'gvps'(Grails Video Pseudo Streaming Plugin). I'll go over the plugin, how ffmpeg, and basic streaming works, flowplayer and jw-flv integrations, and a little about quartz to help distribute video processing load. The second talk is 'Clustering Grails 2 with Terracotta' which is a dive into what you need to do and how to figure a total clustering solution with Grails 2 that uses Ehcache, HTTP Session Clustering, and Quartz. I'll give examples of each, and demo a Grails 2 app that uses all of these at once at the end. Of value you will find a library compatibility matrix of what you need to add to your BuildConfig to make everything work. There are so many great speakers and topics I'm going to have a hard time choosing what talks I will attend myself!