Hi Fabrice,

It seems the viya3.5 deployment process did not install the CAS as multi-node environment. You can check the ~/playbook/sas_viya_playbook/vars.yml file and see if it has 'mpp' listed under CAS_CONFIGURATION section as follows. If you have 4 cas worker server entry in inventory.ini, you also need to turn-on the 'mpp' mode in vars.yaml file to get MPP CAS environment.

varls.yml
-----------------------
......
...........
CAS_CONFIGURATION:
env:
CAS_DISK_CACHE: /mnt/cascache/cache01
#CAS_DISK_CACHE: /opt/sas/cas/cache01
#CAS_VIRTUAL_HOST: 'loadbalancer.company.com'
#CAS_VIRTUAL_PROTO: 'https'
#CAS_VIRTUAL_PORT: 443
cfg:
mode: 'mpp'
#gcport: 0
#httpport: 8777
#port: 5570
#colocation: 'none'
#SERVICESBASEURL: 'https://loadbalancer.company.com'

Regards,
-Uttam