The big data repository known as Chef Server is manipulated with a tool called knife. The general (simplified) syntax for this tool is:
The category can be one of: environment, client, node, data bag, cookbook, … The full list can be found here.
The command (usually) is one of create, list, show, edit or delete. There are more commands, though, depending on what is being requested through knife.
On the cheat sheat itself, let’s start with some classics:
Skip to content; cmdref.net - Cheat Sheet and Example. Cmdref.net is command references/cheat sheets/examples for system engineers.
- From the command line with. Mvn versions:set versions:commit -DnewVersion=1.0.0-SNAPSHOT Maven Release Plugin. The Maven Release Plugin let's you upload artifacts to Maven repositories - e.g. Jenkins Pipeline for Uploading Maven Artifacts.
- View Jenkins-Cheat-Sheet.pdf from INFORMATIO ICT123 at University of Sargodha, Sargodha. JENKINS CHEAT SHEET Jenkins Jenkins is a software which allows you to do the continuous integration on your.
Nodes and Environments
Data Bags
As you may already know, data bags are stored in a 2 layer structure, thus allowing for simple categorization (e.g. grouping data bags by service or by environment). Some simple commands dealing with them may be:
One can create a data bag with the editor or by providing a source file:
The file may look like:
Finding nodes and environments
Very basic stuff:
The node search above works if we know something about the node name; this may not always be the case. In an ideal scenario, nodes have names prefixed with the environment they belong to – this makes listing nodes by environment a trivial task by using some construct derived from the commands above. But when this is not the case:
NB: the search command returns a “summary” output. If one is interested in the node name alone, some output trimming must be performed:
Running commands on multiple nodes
The basic way to do it is to capture the search result and run ssh on every node:
Jenkins Commands Cheat Sheet Free
One may improve it in a shell script in order to run the ssh commands in parallel and wait for their result; either way, it’s overengineering. The simple way to achieve such thing is:
The search query can get even more complicated, allowing for complex queries to target individual nodes by their configuration:
… and from here, the sky is the limit. Thank you for your read!
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