Description of problem:

In the doc below, we can see some missing information

https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html-single/monitoring_and_managing_system_status_and_performance/index#setting-up-authentication-between-pcp-components_setting-up-graphical-representation-of-pcp-metrics

Update

From

6. Restart the pmcd service:

# systemctl restart pmcd 

To

6. Restart the pmcd service:

# systemctl restart pmcd 
# systemctl restart pmproxy 

Only after the change above, we will be able to proceed with the grafana configuration of PCP bpftrace

How reproducible:

100%

Is this issue a regression from an earlier version:

Steps to Reproduce:

1.

2.

3.

Actual behavior:
Here is the error in log, when trying to save and test

[Sun Jul 21 20:26:26] pmcd(74183) Error: HandleClientInput: error sending Error PDU to client[1] IPC protocol failure 

After restarting the pmproxy service, the save and test worked as expected.

Expected behavior:
[Describe what should be happening instead]

Business Impact / Additional info: