"invalid cookie, longer than max length 4093"

[jaxxstorm]

Describe the bug
The current size limit of the JWT token is 4093, which is prohibitive for orgs using SSO with large group memberships.

This seems to have been brought up in #1103 and was then closed with the fix being to display a warning. This doesn't really help those of us with large orgs trying to configure SSO that need to use dex

To Reproduce
Configure dex with an SSO provider with a large number of groups returned
Attempt to login

Expected behavior
User can login

Version
v1.1.2

[alexec]

This is a known issue.

You likely are part of many groups and have gone over the 4KB limit which is set for cookies.
You can get the list of groups by opening developer tools -> network
click log in
find the call to <argocd_instance>/auth/callback?code=<random_string>
You will see a cookie argocd.token
Take the cookie value check the length, you can use https://mothereff.in/byte-counter
You can decode the token at https://jwt.io/
That will provide the list of teams, that you can remove yourself from.

This will be mitigated by #2134, and by #1642.

[alexec]

See #1103

[alexec]

v1.3 contains a fix to mitigate this issue, by compressing the cookie. We don't plan to provide a complete fix for this at this time.