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# knife cheat
## Search Examples
knife search "name:ip*"
knife search "platform:ubuntu*"
knife search "platform:*" -a macaddress
knife search "platform:ubuntu*" -a uptime
knife search "platform:ubuntu*" -a virtualization.system
knife search "platform:ubuntu*" -a network.default_gateway
knife search "platform:*" -a languages.ruby.version
knife search "platform:*" -a kernel.machine
knife search users "groups:admin" -i
knife role list
## SSH Examples
knife ssh "name:arlo*" -x root -P PASSWORD uptime
knife ssh "NOT platform:win*" -P PASSWORD ls
knife ssh "chef_environment:Helix-Uptime-VM and NOT platform:win*" \
-x root -P PASSWORD uptime
##Chef Client
How do I automatically bootstrap a linux box?
knife bootstrap 10.0.0.2 -N www.racter.com -x root -P PASSWORD
How do I make the chef client run so it will apply my new recipes?
knife winrm "platform:windows" -P PASSWORD chef-client
knife ssh "NOT platform:win*" -x root -P PASSWORD chef-client
How do I make sure the chef client on the nodes is calling home?
knife cookbook site install chef-client
knife cookbook upload chef-client
knife node run_list add NODENAME 'recipe[chef-client]'
##Cookbooks
How do I create a new cookbook?
cd ~/chef-repo
rake new_cookbook COOKBOOK=MyNew-Controller
How do I upload my new cookbook to the chef server so I can use it?
knife cookbook upload <cookbookname> –include-dependencies
How do I download existing recipes from the Chef Community?
knife cookbook site install awsclient
How do I add a new recipe to every node?
knife exec -E "nodes.transform(“chef_environment:dev“) \
{|n| puts n.run_list.remove(“recipe[chef-client::upgrade]“); n.save }"
knife exec -E "nodes.find(“role:web_server”) \
{|n| n.run_list.remove(“role[web_server]“); }"
knife exec -E "nodes.find(“name:test*”) \
{|n| n.chef_environment(“dev”);n.save }"
How do I download the recipes, environments, nodes and everything that is already uploaded to the chef server?
knife download /
##EC2
How do I launch a new server into the amazon cloud?
knife ec2 server create -I ami-d0f89fb9 -x ubuntu \
-E My-PreProduction-Env -r “role[BuildServer]” -g sg-d5d417be
How do I shut down a old server in the amazon cloud?
knife ec2 server delete i-234a334 –purge
###Nodes
How do I move nodes between environments?
#Move all the nodes in _default environment to the production-VM environment
knife exec -E "nodes.transform(“chef_environment:_default”) \
{ |n| n.chef_environment(“production-VM”) }"
Remove a recipe from all nodes in an Environment
knife exec -E "nodes.transform(“chef_environment:dev”) \
{|n| puts n.run_list.remove(“recipe[chef-client::upgrade]“); n.save }"
#Roles
How do I add a Linux role to all the boxes that are not window?
knife exec -E "nodes.transform(“NOT platform:win*“) \
{|n| puts n.run_list << “role[linux]“; n.save }"
How do I remove a Linux role from all the boxes that are not windows?
knife exec -E "nodes.transform(“NOT platform:win*“) \
{|n| puts n.run_list.remove(“role[linux]“); n.save }"
Remove all nodes from a given role
knife exec -E "nodes.find(“role:web_server”) \
{|n| n.run_list.remove(“role[web_server]“); n.save}"
How do I add a role to an environment?
knife exec -E 'nodes.transform("chef_environment:my-production-env") \
{|n| puts n.run_list << "role[hosts_file]"; n.save }'
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