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Bug 1845592 - [RFE] Vector datasource from browser requires access to remote servers posing possible security issues
Summary: [RFE] Vector datasource from browser requires access to remote servers posing...
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: grafana-pcp
Version: 8.2
Hardware: x86_64
OS: Linux
Target Milestone: rc
: 8.0
Assignee: Andreas Gerstmayr
QA Contact: Jan Kurik
Apurva Bhide
Depends On: 1854093
TreeView+ depends on / blocked
Reported: 2020-06-09 15:16 UTC by Shravan Kumar Tiwari
Modified: 2024-06-18 09:30 UTC (History)
9 users (show)

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.
Clone Of:
Last Closed: 2021-05-18 15:52:17 UTC
Type: Feature Request
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHEA-2021:1865 0 None None None 2021-05-18 15:52:23 UTC

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:

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.


Comment 20 Steven268Danner 2024-06-18 09:30:37 UTC
Thank you for sharing this info. I really liked the simplistic way of explanation.

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