Symptoms:
- EasySSO is installed and you are using the SAML authenticator
SAML Login Redirect binding is being used
When logging in, the user is unable to login and the following exception appears on the screen
java.lang.IllegalArgumentException: Request header is too large
Cause:
Information inside the request header is too large for the Apache Tomcat webserver or application server. A likely cause is using encryption or if large amounts of data is included for groups
How to resolve the issue:
Recommended
Use the POST binding type for SAML login.
Alternative
Configure the connection maxHttpHeaderSize for the apache server. Atlassian documentation can be found here