Bug 1600562 - Installing prometheus should update iptable rules for node-exporter
Summary: Installing prometheus should update iptable rules for node-exporter
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Monitoring
Version: 3.9.0
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: ---
: 3.10.z
Assignee: Simon Pasquier
QA Contact: Junqi Zhao
URL:
Whiteboard:
Depends On: 1563888 1603144
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-07-12 13:48 UTC by Simon Pasquier
Modified: 2021-12-10 16:37 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Cause: the 9100 port is blocked on all nodes by default. Consequence: Prometheus can't scrape the node_exporter service running on the other nodes and which listens on port 9100. Fix: the firewall configuration is modified to allow incoming TCP traffic for the 9000-1000 port range. Result: Prometheus can scrape the node_exporter services.
Clone Of: 1563888
Environment:
Last Closed: 2018-08-31 06:18:10 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
node exporter targets could be accessed (158.74 KB, image/png)
2018-08-21 07:04 UTC, Junqi Zhao 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Github openshift openshift-ansible issues 7999 0 None open Prometheus - kubernetes-nodes-exporter endpoints down 2020-03-26 14:31:32 UTC
Github openshift openshift-ansible pull 9172 0 None closed [release-3.10] Allow the 9k-10k port range for Prometheus 2020-03-26 14:31:34 UTC
Red Hat Product Errata RHBA-2018:2376 0 None None None 2018-08-31 06:18:51 UTC

Comment 5 Junqi Zhao 2018-08-21 07:04:13 UTC 
# netstat -anlp | grep 9100
tcp6       0      0 :::9100                 :::*                    LISTEN      5869/node_exporter  
tcp6       0      0 172.16.120.79:9100      172.16.120.57:36830     ESTABLISHED 5869/node_exporter 


and node-exporter target could be accessed without error, see the attached picture

openshift-ansible version: 3.10.29-1
Comment 6 Junqi Zhao 2018-08-21 07:04:44 UTC 
Created attachment 1477423 [details]
node exporter targets could be accessed
Comment 8 errata-xmlrpc 2018-08-31 06:18:10 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, 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/RHBA-2018:2376
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