How to install a specific Chart version

Question

I am trying to install a previous version of Prometheus, namely version 6.7.4:

helm install -f stable/prometheus/values.yaml prometheus --name stable/prometheus --namespace prometheus --version 6.7.4 

However it installs the latest version, prometheus-6.8.0:

$ helm ls NAME        REVISION    UPDATED                     STATUS      CHART               NAMESPACE  prometheus  1           Fri Jul  6 01:46:42 2018    DEPLOYED    prometheus-6.8.0    prometheus 

What am I doing wrong?

Answer 1

I see in the helm install code:

# help provides possible cli installation arguments help () {   echo "Accepted cli arguments are:"   echo -e "\t[--help|-h ] ->> prints this help"   echo -e "\t[--version|-v <desired_version>] . When not defined it defaults to latest"   echo -e "\te.g. --version v2.4.0  or -v latest" } 

So just in case, do try with: --version v6.7.4 instead of --version 6.7.4.