If you want an ELK stack, you should look into the operators provided by Elastic [1]. All you need to do is write a very small manifest or two for each thing you want operated. I feel like this is a better solution to 'I want an ELK cluster' than a helm chart because it solves more problems without leaking.
[1] https://www.elastic.co/blog/introducing-elastic-cloud-on-kub...