Custom HTTP certificate

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Custom HTTP certificate

You can provide your own CA and certificates instead of the self-signed certificate to connect to Elastic stack applications via HTTPS using a Kubernetes secret.

See Setup your own certificate to learn how to do that.

Custom self-signed certificate using OpenSSL

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This example illustrates how to create your own self-signed certificate for the quickstart Elasticsearch cluster using the OpenSSL command line utility. Note the subject alternative name (SAN) entry for quickstart-es-http.default.svc.

$ openssl req -x509 -sha256 -nodes -newkey rsa:4096 -days 365 -subj "/CN=quickstart-es-http" -addext "subjectAltName=DNS:quickstart-es-http.default.svc" -keyout tls.key -out tls.crt
$ kubectl create secret generic quickstart-es-cert --from-file=ca.crt=tls.crt --from-file=tls.crt=tls.crt --from-file=tls.key=tls.key

Custom self-signed certificate using cert-manager

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This example illustrates how to issue a self-signed certificate for the quickstart Elasticsearch cluster using a cert-manager self-signed issuer.

---
apiVersion: cert-manager.io/v1alpha2
kind: Issuer
metadata:
  name: selfsigned-issuer
spec:
  selfSigned: {}
---
apiVersion: cert-manager.io/v1alpha2
kind: Certificate
metadata:
  name: quickstart-es-cert
spec:
  isCA: true
  dnsNames:
    - quickstart-es-http
    - quickstart-es-http.default.svc
    - quickstart-es-http.default.svc.cluster.local
  issuerRef:
    kind: Issuer
    name: selfsigned-issuer
  secretName: quickstart-es-cert

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