CLD-620: Add warning if FQDN is over 64 charictars.

Add known issues and limitations section to README
Document this limitiation in the known limitations section of the README
Move FQDN declaration to _helpers.tpl so it is globally useable

Author: ilanRosenbaum

README.md

@@ -35,6 +35,8 @@
   - [Notice](#notice)
 - [Uninstalling the Chart](#uninstalling-thechart)
 - [Parameters](#parameters)
+- [Known Issues and Limitations](#Known-Issues-and-Limitations)
+
 
 # Introduction
 
@@ -475,3 +477,7 @@ This table describes the list of available parameters for Helm Chart.
 | `logCollection.files.requestLogs`    | Enable this parameter to enable collection of Marklogics request logs when log collection is enabled           | `true`                               |
 | `logCollection.files.crashLogs`      | Enable this parameter to enable collection of Marklogics crash logs when log collection is enabled             | `true`                               |
 | `logCollection.files.auditLogs`      | Enable this parameter to enable collection of Marklogics audit logs when log collection is enabled             | `true`                               |
+
+# Known Issues and Limitations
+
+1. If the hostname is greater than 64 characters there may be issues with certificates. The certificates may shorten the name or use SANs for hostnames in the certificates.

charts/templates/NOTES.txt

@@ -1,12 +1,13 @@
-{{- define "marklogic.fqdn" -}}
-{{- printf "%s-0.%s.%s.svc.cluster.local" (include "marklogic.fullname" .) (include "marklogic.headlessServiceName" .) .Release.Namespace }}
-{{- end}}
-
 Thank you for installing {{ .Chart.Name }}.
 
 Your release is named {{ .Release.Name }}.
 
 FQDN is {{ include "marklogic.fqdn" . }}
+{{- if gt (len (include "marklogic.fqdn" .)) 64 }}
+WARNING:    The hostname is greater than 64 characters
+            There may be issues with certificates
+            The certificates may shorten the name or use SANs for hostnames in the certificates
+{{- end }}
 
 Group {{ .Values.group.name }} is created on the MarkLogic cluster.
 

charts/templates/_helpers.tpl

@@ -75,3 +75,10 @@ Create the name of the service account to use
 {{- default "default" .Values.serviceAccount.name }}
 {{- end }}
 {{- end }}
+
+{{/*
+Fully qualified domain name
+*/}}
+{{- define "marklogic.fqdn" -}}
+{{- printf "%s-0.%s.%s.svc.cluster.local" (include "marklogic.fullname" .) (include "marklogic.headlessServiceName" .) .Release.Namespace }}
+{{- end}}