IPv6 – What is the Service Block Model?

Overview The service block model (SBM) is an IPv6 migration strategy utilizing ISATAP tunnels designed for organizations who must rapidly implement IPv6. The service block model acts as an overlay network which has no impact on the underlying IPv6 network. Two Catalyst 6500 switches comprise the core of the SBM. The two Catalyst 6500 switches […]

Chef undefined method ‘content_source’ error

The Problem If you’re running chef v2.1 you may have run into this bug. I’m running CentOS 6 in a VM and received the error when running “chef generate template webserver index.html”. This was my resulting error code: /opt/chefdk/embedded/apps/chef-dk/lib/chef-dk/skeletons/code_generator/recipes/template.rb:19:in `from_file’: undefined method `content_source’ for # (NoMethodError) from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.0.0.alpha.1/lib/chef/mixin/from_file.rb:30:in `instance_eval’ from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.0.0.alpha.1/lib/chef/mixin/from_file.rb:30:in `from_file’ from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.0.0.alpha.1/lib/chef/cookbook_version.rb:245:in `load_recipe’ […]

FTPoverEmail Beta v1.00

I made a few more edits to FTPoverEmail. I got the SSH functionality working and fixed a couple of bugs for this next version. I’ve started studying for CCDP so my work on it has tailed off a fair amount. Here’s the next version with the bug fixes and SSH functionality. I called this one […]