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Bug 2058655 - Metrics role, with "metrics_from_mssql" option does not configure /var/lib/pcp/pmdas/mssql/mssql.conf on first run
Summary: Metrics role, with "metrics_from_mssql" option does not configure /var/lib/pc...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: rhel-system-roles
Version: 8.5
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Noriko Hosoi
QA Contact: David Jež
Gabi Fialová
URL:
Whiteboard: role:metrics
Depends On:
Blocks: 2058777 2060377 2060523
TreeView+ depends on / blocked
 
Reported: 2022-02-25 14:33 UTC by Brian Smith
Modified: 2022-05-10 14:42 UTC (History)
8 users (show)

Fixed In Version: rhel-system-roles-1.15.1-1.el8
Doc Type: Bug Fix
Doc Text:
.Configuration by the Metrics role now follows symbolic links correctly When the `mssql pcp` package is installed, the `mssql.conf` file is located in `/etc/pcp/mssql/` and is targeted by the symbolic link `/var/lib/pcp/pmdas/mssql/mssql.conf`. Previously, however, the Metrics role overwrote the symbolic link instead of following it and configuring `mssql.conf`. Consequently, running the Metrics role changed the symbolic link to a regular file and the configuration therefore only affected the `/var/lib/pcp/pmdas/mssql/mssql.conf` file. This resulted in a failed symbolic link, and the main configuration file `/etc/pcp/mssql/mssql.conf` was not affected by the configuration. The issue is now fixed and the `follow: yes` option to follow the symbolic link has been added to the Metrics role. As a result, the Metrics role preserves the symbolic links and correctly configures the main configuration file.
Clone Of:
: 2058777 2060377 (view as bug list)
Environment:
Last Closed: 2022-05-10 14:13:20 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Github performancecopilot ansible-pcp pull 32 0 None Merged Add "follow: yes" to the template task in the mssql and elasticsearch subrole. 2022-03-01 17:22:49 UTC
Red Hat Issue Tracker RHELPLAN-113852 0 None None None 2022-02-25 14:38:10 UTC
Red Hat Product Errata RHBA-2022:1896 0 None None None 2022-05-10 14:14:46 UTC

Description Brian Smith 2022-02-25 14:33:31 UTC 
Description of problem:
The metrics role, when used with the  "metrics_from_mssql" option does not configure /var/lib/pcp/pmdas/mssql/mssql.conf on the first playbook run.  This file still appears to have its default settings after the first playbook/role run.  If I run the playbook/role again, the file is properly updated on the second run. 

Version-Release number of selected component (if applicable):
rhel-system-roles-1.7.3-2.el8.noarch

How reproducible:
Every time


Steps to Reproduce:
1.  Run metrics role with the "metrics_from_mssql" option
2.  Check the  /var/lib/pcp/pmdas/mssql/mssql.conf on the hosts

Actual results:
/var/lib/pcp/pmdas/mssql/mssql.conf was not configured on the hosts, even though the "Ensure PCP SQL Server agent is configured" task ran.  If the playbook/role is run again, the task runs again, and the mssql.conf file is updated as expected.

Expected results:
The /var/lib/pcp/pmdas/mssql/mssql.conf should be updated on the first run of the role

Additional info:
After the first run, /var/lib/pcp/pmdas/mssql/mssql.conf is a symlink:

[root@rhel8-server2 ~]# ls -al /var/lib/pcp/pmdas/mssql/mssql.conf
lrwxrwxrwx. 1 root root 39 Jan  7 14:40 /var/lib/pcp/pmdas/mssql/mssql.conf -> ../../../../../etc/pcp/mssql/mssql.conf
 
After the second run, /var/lib/pcp/pmdas/mssql/mssql.conf is a file:

[ansible@rhel8-server2 ~]$ ls -al /var/lib/pcp/pmdas/mssql/mssql.conf 
-rw-------. 1 root root 370 Jan  7 15:02 /var/lib/pcp/pmdas/mssql/mssql.conf
Comment 21 errata-xmlrpc 2022-05-10 14:13:20 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 (rhel-system-roles 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/RHBA-2022:1896
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