撰寫configmap的Shell腳本

尋找一些關于撰寫 shell 腳本以生成配置映射以在我的集群中使用的幫助/指導。我想撰寫一個 shell 腳本來回圈遍歷值的映射或字典來填寫配置映射。

例子：

apiVersion: v1
kind: ConfigMap
metadata:
  annotations:
    meta.helm.sh/release-name: prometheus-adapter
    meta.helm.sh/release-namespace: prometheus
  labels:
    app.kubernetes.io/component: metrics
    app.kubernetes.io/instance: prometheus-adapter
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: prometheus-adapter
    app.kubernetes.io/part-of: prometheus-adapter
    app.kubernetes.io/version: v0.10.0
    helm.sh/chart: prometheus-adapter-3.4.1
  name: prometheus-adapter
  namespace: prometheus
data:
  config.yaml: |
    rules:
      - seriesQuery: 'haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="pod1"}'
        metricsQuery: 'sum(rate(haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="pod1"}[2m])) by (<<.GroupBy>>)'
        resources:
          overrides:
            namespace: {resource: "namespace"}
        name:
          matches: "^(.*)_total$"
          # The metric we want the individual pod to match
          as: "dfs_requests_per_second"

我想撰寫一個 shell 腳本，-seriesQuery在任何存在賦值變數的地方添加替換值（例如 proxy="value" 和 [2m] 度量間隔）之間的所有內容。對于每個鍵/值對，它會添加帶有縮進的相同塊。有點像這樣

吊艙名稱：[pod1, pod2] 間隔：[2m, 3m]

      - seriesQuery: 'haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="pod1"}'
        metricsQuery: 'sum(rate(haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="pod1"}[2m])) by (<<.GroupBy>>)'
        resources:
          overrides:
            namespace: {resource: "namespace"}
        name:
          matches: "^(.*)_total$"
          # The metric we want the individual pod to match
          as: "dfs_requests_per_second"
          - seriesQuery: 'haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="pod2"}'
        metricsQuery: 'sum(rate(haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="pod2"}[3m])) by (<<.GroupBy>>)'
        resources:
          overrides:
            namespace: {resource: "namespace"}
        name:
          matches: "^(.*)_total$"
          # The metric we want the individual pod to match
          as: "dfs_requests_per_second"

并將其附加到下面的所有內容中

apiVersion: v1
kind: ConfigMap
metadata:
  annotations:
    meta.helm.sh/release-name: prometheus-adapter
    meta.helm.sh/release-namespace: prometheus
  labels:
    app.kubernetes.io/component: metrics
    app.kubernetes.io/instance: prometheus-adapter
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: prometheus-adapter
    app.kubernetes.io/part-of: prometheus-adapter
    app.kubernetes.io/version: v0.10.0
    helm.sh/chart: prometheus-adapter-3.4.1
  name: prometheus-adapter
  namespace: prometheus
data:
  config.yaml: |
    rules:

uj5u.com熱心網友回復：

最好使用支持 YAML 的模板引擎，但前提是您的 pod 名稱和間隔不包含任何有問題的字符，那么您可以使用 bash 輕松生成組態檔：

#!/bin/bash

pods=( pod1 pod2 )
intervals=( 2m 3m )

cat <<'EOF'
apiVersion: v1
kind: ConfigMap
metadata:
  annotations:
    meta.helm.sh/release-name: prometheus-adapter
    meta.helm.sh/release-namespace: prometheus
  labels:
    app.kubernetes.io/component: metrics
    app.kubernetes.io/instance: prometheus-adapter
    app.kubernetes.io/managed-by: Helm
    app.kubernetes.io/name: prometheus-adapter
    app.kubernetes.io/part-of: prometheus-adapter
    app.kubernetes.io/version: v0.10.0
    helm.sh/chart: prometheus-adapter-3.4.1
  name: prometheus-adapter
  namespace: prometheus
data:
  config.yaml: |
    rules:
EOF

for i in "${!pods[@]}"
do
cat <<EOF
      - seriesQuery: 'haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="${pods[i]}"}'
        metricsQuery: 'sum(rate(haproxy_backend_http_requests_total{namespace!="", pod!="", proxy="${pods[i]}"}[${intervals[i]}])) by (<<.GroupBy>>)'
        resources:
          overrides:
            namespace: {resource: "namespace"}
        name:
          matches: "^(.*)_total$"
          # The metric we want the individual pod to match
          as: "dfs_requests_per_second"
EOF
done

標籤：重击壳

上一篇：終端上的正則運算式行為與在線驗證器不同

下一篇：Spring控制器無法決議從HttpClient發送的JSON（無法構造`java.util.LinkedHashMap`的實體）