I Have some problem when tried this
Open OnDemand

Open OnDemand is used for accessing HPC resources, submitting jobs to a cluster, user file access, etc.
SSH container name: ondemand (must login to front end first)
URL: https://localhost:3443/
Portal Logins include:
Any of the LDAP accounts listed above.
Once logged in, click on "Clusters" and then "HPC Cluster Shell Access" and you will be logged in to the cluster frontend container.
how to debug this?