knife cheat

knife cheat

# 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 search node "platform:debian" -i   // -i minimal output
knife search node 'platform_version:6*' -i
knife search node '(domain:mydomain.local AND -tags:production)'
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

@Bootstrap through ssh gateway
knife bootstrap -A -i $HOME/.ssh/id_rsa.pub -G [email protected] 192.168.x.x -x root -r 'role[myrole]' 


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
	
knife ec2 server create -r "role[my-role], recipe[nginx]" -I ami-61e56916 -f t2.medium \
--availability-zone=eu-west-1a --ssh-key=mykeyname  --ebs-size 15 -E chef -s subnet-axxxxx -N node-name  -g sg-xxxxxx

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 }'