Then i used my root user/pass but i got the following message :
Error during app install: failed to extract app from /opt/splunk/bin/Splunk_DA-ESS_PCICompliance to /opt/splunk/var/run/splunk/bundle_tmp/446fbab906660b58: No such file or directory
Then i did:
./splunk install app /opt/splunk/etc/apps/Splunk_DA-ESS_PCICompliance -update 1 and i got the message that PCI was installed but then on the Web interfeace i cannot see PCI any longer and i got the message :
Splunk_DB-ESS PCI Compliance version None is lower than required 3.4.0
It seems you are using system (i.e. Linux or similar) credentials to login to Splunk. That won't work. You have to use your Splunk-(Web)-credentials to connect to Splunk.
Also you have to make sure that you have the permission to install an app (also inside of Splunk).
And last - "Splunk_DA-ESS_PCICompliance" is the name of the installed app. On the commandline you have to use the name of the tar archive, e.g. splunk install app splunk-app-for-pci-compliance-splunk-enterprise_370.spl