Question: Regexp match all pieces of a string with `[0-9_]+` and skip optional `_[a-z0-9]{24}` ?

For instance,

```
hello word some_stuff other_stuff_607eea770b6d00003d001579 something

```

Should only capture/match

```
hello word some_stuff other_stuff something

```

Here's what I have but it still matches some part of `[a-z0-9]{24}`

```
/[a-z]+(_[a-z]+)?(?:[a-z0-9]{24})?/

```

Answer: 
You can try to use `-n pulsar` to specify the namespace when you use the `helm install` command.
The default namespace for the Apache Pulsar charts should be "pulsar, so there might be an issue/change in the the version you are using. However, you can specify the namespace using the `--set namespace=<name>` option in the `helm install` command

Therefore your command should look like this:

`# install pulsar using the helm chart helm install --set initialize=true -set namespace=pulsar --values pulsar-helm-chart/examples/values-minikube.yaml pulsar-mini apache/pulsar`