What’s the easiest way to install cfengine? Have you heard of cf-remote? cf-remote was born out of a developer’s itch for an easy way to get CFEngine installed on some host for testing. We have featured cf-remote in several posts1 since it was first released in 2019, but today is Friday, …
Security Technical Implementation Guides (STIGs) are an excellent body of knowledge to leverage in securing your infrastructure. With the stig-rhel-7 module you can easily add inventory and remediation policy for RHEL 7 with CFEngine. Do note that as of March 2024 this module does not provide …
When you want to inspect both the return code and output from a command execresult_as_data() might be the function you are searching for. Most CFEngine policy writers have used execresult() and returnszero(). They are useful when you want to do something based on the output of a command or based on …
Have you ever wanted some hosts to organize themselves into different groups, but without spending time to worry about assigning a specific group? Cody, Craig, and Nick talk about using the select_class feature in CFEngine. Nick implements automatic assignment of a maintainer for each host: You want …
Ever wanted to manipulate a string - temporarily - for an individual promise? Check out the with attribute and its special, $(with) variable. Sometimes you need some variation on a string for a specific case. Traditionally, to achieve this you’d simply define another variable. Here is a …
Looking for a way to concisely set a variable conditionally? Have you heard of ifelse()? In CFEngine, traditionally class expressions are used to constrain promises to different contexts. Setting a variable to different values based on context might look like this: /tmp/feature-friday-1.cf bundle …
Last year in commemoration of 30 years of CFEngine I received this lovely coin. I thought it would be fun to celebrate by writing 42 blog posts, each with some little tip about CFEngine. So, be sure to come check in on Friday for the first post in the Feature Friday series. Series Posts ifelse() …
Curious about getting visibility of a host where you can’t install CFEngine natively, but can run a container? Craig shows us how he’s getting inventory from his Torizon Verdin IMX8MP by deploying a container with a chroot containing volumes bind mounted from the host. A long post show …
The CFEngine team celebrates 30 years of CFEngine and has a chat with Mark Burgess, the original creator and author of CFEngine. Mark delves into the early chapters of his journey, tracing back the roots of his inspiration to science fiction sagas like Star Trek and Dr. Who, and the literary works …
When executing commands in a shell, the program and its arguments are typically separated by spaces. This command reads the content of two files and prints it out (concatenating it): command cat one.txt two.txt In the example above, cat is the command / program, while one.txt is the first argument, …
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