How to check if package is installed by using unless? - azure

Question

I've created a puppet script to install Azure client and in the last step before using yum install, I want to make sure that the package haven't installed before for prevent from duplicate install.
My concept is
Execute the script if the output from az --help give nothing (which mean there's no Azure install)
or if you guys have any better choices please guide me, thanks!
And my code is
#install azure client
exec { 'install-azure':
command => '/bin/yum install azure-cli -y',
path => '/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:',
unless => 'az --help',
#require => Exec['yumrepolist']
}
It seems like there're something wrong with the code, I've checked a particular agent by using
puppet agent -t
Notice:
/Stage[main]/Os_preparation::Azure_install/Exec[yumrepolist]/returns:
executed successfully Error:
/Stage[main]/Os_preparation::Azure_install/Exec[install-azure]: Could
not evaluate: Could not find command 'az'
Any ideas? Thanks

Answer 1

You should install azure-cli using a package resource. Also, you should add its Yum repository as a yumrepo resource.
Try something like the following, which replicates the instructions on https://learn.microsoft.com/en-us/cli/azure/install-azure-cli-yum?view=azure-cli-latest.
yumrepo { 'azure-cli':
descr => 'Azure CLI',
baseurl => 'https://packages.microsoft.com/yumrepos/azure-cli',
enabled => 1,
gpgcheck => 1,
gpgkey => 'https://packages.microsoft.com/keys/microsoft.asc',
}
package { 'azure-cli':
ensure => installed,
require => Yumrepo['azure-cli'],
}