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Bug 1845592

Summary: [RFE] Vector datasource from browser requires access to remote servers posing possible security issues
Product: Red Hat Enterprise Linux 8 Reporter: Shravan Kumar Tiwari <shtiwari>
Component: grafana-pcpAssignee: Andreas Gerstmayr <agerstmayr>
Status: CLOSED ERRATA QA Contact: Jan Kurik <jkurik>
Severity: high Docs Contact: Apurva Bhide <abhide>
Priority: unspecified    
Version: 8.2CC: abhide, agerstmayr, cww, grafana-maint, jkurik, mgoodwin, nathans, Steven268Danner, yuokada
Target Milestone: rcKeywords: FutureFeature, Triaged
Target Release: 8.0Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: grafana-pcp-3.0.0-1.el8 Doc Type: Enhancement
Doc Text:
.Accessing remote hosts through a central `pmproxy` for the Vector data source in `grafana-pcp` In some environments, the network policy does not allow connections from the dashboard viewer's browser to the monitored hosts directly. This update makes it possible to customize the `hostspec` in order to connect to a central `pmproxy`, which forwards the requests to the individual hosts.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-18 15:52:17 UTC Type: Feature Request
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1854093    
Bug Blocks:    

Description Shravan Kumar Tiwari 2020-06-09 15:16:59 UTC 
Description of problem:

Customer used https://www.redhat.com/en/blog/getting-started-using-performance-co-pilot-and-vector-browser-based-metric-visualizations in previous RHEL 8 and 8.1 releases to get data from remote hosts on Vector dashboards


To achieve the same in RHEL8.2, PCP vector data-source is implemented to get the real time data from remote hosts (followed the doc- https://grafana-pcp.readthedocs.io/en/latest/guides/multiple-vector-hosts.html)

Here, customer found out that Grafana definition of browser access states that,
Browser access mode:
All requests will be made from the browser directly to the data source and may be subject to Cross-Origin Resource Sharing (CORS) requirements. The URL needs to be accessible from the browser if you select this access mode.


In case of Redis each host collects the data and stores it in a Redis database. Grafana connects to a single pmproxy instance on central pcp host, which in turn connects to the Redis database to gather the data.

BUT, In case of Vector dashboard it seems is not implemented in a same way and browser PC needs direct access to remote client/clients to get real time data.





Version-Release number of selected component (if applicable):
RHEL 8.2
PCP 5.x

How reproducible:



Steps to Reproduce:
1.
2.
3.

Actual results:
You need direct access from browser pc to remote client for getting real time data in dashboard for Vector datasource

Expected results:
For collecting remote host data in vecotr dashboard the request must go to central host pmroxy and then to remote client so no need for direct access from browser pc to pcp client is needed.

Additional info:
Comment 3 Andreas Gerstmayr 2020-06-10 10:55:38 UTC 
In PCP terms: the hostspec in grafana-pcp needs to be configurable with Grafana templates.

Upstream issue: https://github.com/performancecopilot/grafana-pcp/issues/52
Comment 19 errata-xmlrpc 2021-05-18 15:52:17 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (grafana-pcp bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2021:1865
Comment 20 Steven268Danner 2024-06-18 09:30:37 UTC 
Thank you for sharing this info. I really liked the simplistic way of explanation.
https://www-panoramacharter.com