如何将TLS证书放入pod中使用普罗米修斯舵图？

Question

下面是stable/prometheus的helm图表值:https://github.com/helm/charts/blob/master/stable/prometheus/values.yaml

我能把这件事搞定：

helm upgrade --install prometheus stable/prometheus \
--set extraScrapeConfigs="- job_name: 'myjob'
  scrape_interval: 1s
  metrics_path: /metrics
  scheme: https
  static_configs:
    - targets: ['###.##.###.###:#####']
  tls_config:
    ca_file: /prometheus/ca.pem
    key_file: /prometheus/key.pem
    cert_file: /prometheus/cert.pem
    insecure_skip_verify: true"

为了做到这一点，我必须做：

kubectl cp localdir/ca.pem prometheus-server-abc:/prometheus -c prometheus-server
kubectl cp localdir/key.pem prometheus-server-abc:/prometheus -c prometheus-server
kubectl cp localdir/cert.pem prometheus-server-abc:/prometheus -c prometheus-server

我相信有一种更好、更恰当的方法可以使用secret和mountpath来实现这一点。我尝试了类似以下的事情，但没有运气：

apiVersion: v1
kind: Secret
metadata:
  name: mysecret
data:
  ca.pem: base64encodedcapem
  key.pem: base64encodedkeypem
  cert.pem: base64encodedcertpem

kubectl apply -f mysecret

helm upgrade --install prometheus stable/prometheus \
--set extraSecretMounts="- name: mysecret-mount
  mountPath: /somepathinpod/mysecret
  secretName: mysecret" \
--set extraScrapeConfigs="- job_name: 'myjob'
  scrape_interval: 1s
  metrics_path: /metrics
  scheme: https
  static_configs:
    - targets: ['###.##.###.###:#####']
  tls_config:
    ca_file: /somepathinpod/mysecret/ca.pem
    key_file: /somepathinpod/mysecret/key.pem
    cert_file: /somepathinpod/mysecret/cert.pem
    insecure_skip_verify: true"

我希望证书神奇地出现在/somepathinpod上，但它们没有出现。

我假设我不需要克隆整个repo和手动编辑helm图表来将volumemount放入prometheus-server部署/pod中，并且可以以某种方式更改helm命令。有什么建议让我的证书在那里吗？

Answer 1

根据文档，要使用的正确密钥应该是server.extrasecretmounts而不是仅仅extrasecretmounts。

还可以通过以下方法验证在Kubernetes上生成的YAML是否包含正确的挂载：

kubectl get deployment prometheus-server-object-name -o yaml

重写.yaml

server:
  extraSecretMounts:
    - name: mysecret-mount
      mountPath: /etc/config/mysecret
      secretName: mysecret

extraScrapeConfigs: |
  - job_name: myjob
    scrape_interval: 15s
    metrics_path: /metrics
    scheme: https
    static_configs:
      - targets:
          - ###.##.###.###:#####
    tls_config:
      ca_file: /etc/config/mysecret/ca.pem
      key_file: /etc/config/mysecret/key.pem
      cert_file: /etc/config/mysecret/cert.pem
      insecure_skip_verify: true

helm upgrade -f override.yaml prometheus stable/prometheus