Re: Getting rid of bad cobbler metavariables

Adam Rosenwald wrote: > A FAQ that I have brought up on numerous occasions on IRC involves > 'getting rid of bad cobbler metavariables'. > > If I were to set a wrong ks_meta variable NAME, how do I get rid of > the NAME without taking out ks_meta entirely. > I suspect this is not well documented, though it's been present for a while: cobbler system edit --name=foo --ksmeta="~NAME" --in-place replacing "NAME" with the key you want to delete. (Or, if this is too cryptic to remember, you can also use the web app) > `cobbler system edit --in-place --name=NAME --ksmeta='*!art2*'` > > Supposedly this syntax will, upon deserialization of the JSON, clear > the ks_meta namespace of *art2*; however, upon issuing a report on a > given entity, the flawed variable will still appear along with the > negated variable. That's not about deserialization, that's why... it's about supression of evaluation. What it means is that when evaluating the object chain the variable will be discarded. For instance, if the distro sets kernel option "a=2", and the profile sets "!a", there will be no value a in the evaluated kernel options when installing based on that profile. A better usage example if if globally in settings the kernel arguments included "text" and someone wanted to always do a graphical install for a particular profile: cobbler profile edit --name=foo --kopts="!text"

--Michael