I have modified my jira server.xml https connector to:
<Connector
port="8081"
relaxedPathChars="[]|"
relaxedQueryChars="[]|{}^\`"<>"
maxThreads="150"
minSpareThreads="25"
connectionTimeout="20000"
enableLookups="false"
maxHttpHeaderSize="8192"
protocol="HTTP/1.1"
useBodyEncodingForURI="true"
acceptCount="100"
disableUploadTimeout="true"
bindOnInit="false"
secure="true"
scheme="https"
keyAlias="jira"
keystoreFile="/opt/atlassian/jira/jira.jks"
keystorePass="XXXX"
keystoreType="JKS"
/>
There are no errors in the jira boot logs, however, when attempting to access https, I get the error:
INFO [http-nio-8081-exec-23] org.apache.coyote.http11.Http11Processor.service Error parsing HTTP request header
Note: further occurrences of HTTP header parsing errors will be logged at DEBUG level.