Custom NGINX template

The NGINX template is located in the file /etc/nginx/template/nginx.tmpl.

Using a Volume it is possible to use a custom template. This includes using a Configmap as source of the template

        volumeMounts:
          - mountPath: /etc/nginx/template
            name: nginx-template-volume
            readOnly: true
      volumes:
        - name: nginx-template-volume
          configMap:
            name: nginx-template
            items:
            - key: nginx.tmpl
              path: nginx.tmpl

Please note the template is tied to the Go code. Do not change names in the variable $cfg.

For more information about the template syntax please check the Go template package. In addition to the built-in functions provided by the Go package the following functions are also available:

• empty: returns true if the specified parameter (string) is empty
• contains: strings.Contains
• hasPrefix: strings.HasPrefix
• hasSuffix: strings.HasSuffix
• toUpper: strings.ToUpper
• toLower: strings.ToLower
• split: strings.Split
• quote: wraps a string in double quotes
• buildLocation: helps to build the NGINX Location section in each server
• buildProxyPass: builds the reverse proxy configuration
• buildRateLimit: helps to build a limit zone inside a location if contains a rate limit annotation

TODO:

• buildAuthLocation:
• buildAuthResponseHeaders:
• buildResolvers:
• buildDenyVariable:
• buildUpstreamName:
• buildForwardedFor:
• buildForwardedHost:
• buildAuthSignURL:
• buildNextUpstream:
• filterRateLimits:
• formatIP:
• getenv:
• getIngressInformation:
• serverConfig:
• isLocationAllowed:
• isValidClientBodyBufferSize: