Bug 1631808

Summary: Ensure ovirt-engine-metrics in RHV 4.2 doesn't have compatibility issues if fluentd doesn't exist on host
Product: Red Hat Enterprise Virtualization Manager Reporter: Sandro Bonazzola <sbonazzo>
Component: ovirt-engine-metricsAssignee: Shirly Radco <sradco>
Status: CLOSED ERRATA QA Contact: Lucie Leistnerova <lleistne>
Severity: high Docs Contact:
Priority: high    
Version: 4.2.7CC: apinnick, dfediuck, isaranov, lleistne, lsvaty, mgoldboi, sbonazzo, sradco
Target Milestone: ovirt-4.2.8-2Keywords: ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Fixed In Version: ovirt-engine-metrics Doc Type: Bug Fix
Doc Text:
Previously, the 4.2 Manager could not deploy RHVH 4.3 hosts because RHVH 4.3 no longer included the `fluentd` packages. In the current release, the 4.2 Manager can deploy RHVH 4.3 hosts even if `fluentd` is missing.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-02-18 15:24:55 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Metrics RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 1668726    

Description Sandro Bonazzola 2018-09-21 15:32:21 UTC
In 4.3 we are dropping fluentd in favor of pcp and rsyslog (bug #1627753).
Removing fluentd in 4.3 hosts means that 4.2 engine need to be able to add a 4.3 host to a 4.2 cluster in 4.2 compatibility mode without failing even if fluentd is missing. If this can't be achieved we'll need to ship both fluentd and pcp + rsyslog on RHV-H 4.3 so adding pcp and rsyslog side by side with existing fluentd.

Tentatively targeting to 4.2.7 at least for initial investigations.

Comment 1 Lucie Leistnerova 2019-01-16 09:32:51 UTC
Adding 4.3 host without fluentd to 4.2 engine (with metrics setup) failed on ansible role

2019-01-16 10:25:16,373+01 ERROR [org.ovirt.engine.core.bll.hostdeploy.InstallVdsInternalCommand] (EE-ManagedThreadFactory-engine-Thread-124381) [4e10f9f6] Host installation failed for host '54dd97c5-41cc-47ca-8268-824ea57d2ba4', 'vhost09': Failed to execute Ansible host-deploy role. Please check logs for more details: /var/log/ovirt-engine/host-deploy/ovirt-host-deploy-ansible-20190116102342-

in ansible log:
2019-01-16 10:25:09,513 p=24221 u=ovirt |  TASK [oVirt.ovirt-fluentd/ovirt-fluentd-package : Install fluentd package] *****
2019-01-16 10:25:16,149 p=24221 u=ovirt |  fatal: []: FAILED! => {
    "changed": false,
    "rc": 126,
    "results": [
        "No package matching 'fluentd' found available, installed or updated"

Tested in ovirt-engine-
with ovirt-engine-metrics-1.1.8-1.el7ev.noarch,

Comment 2 Sandro Bonazzola 2019-01-16 11:07:16 UTC
(In reply to Lucie Leistnerova from comment #1)
> Adding 4.3 host without fluentd to 4.2 engine (with metrics setup) failed on
> ansible role

Was the cluster set to 4.2 compatibility?

Comment 3 Sandro Bonazzola 2019-01-16 11:08:36 UTC
What if engine is 4.3, compatibility set to 4.2, adding a 4.3 RHV-H?

Comment 4 Lucie Leistnerova 2019-01-16 11:59:51 UTC
Yes, the compatibility on cluster was 4.2.
I'll test the scenario for upgrade to 4.3 and when there will be a problem I'll create new BZ.

Comment 5 Ivana Saranova 2019-01-22 13:09:27 UTC
I tested the compatibility of the scenario for upgrade to 4.3 and everything is working.

1) Have a working metrics store and 4.2 engine with 4.2 hosts
2) Upgrade engine to 4.3 and test if metrics are still working
3) Upgrade hosts to 4.3 and test if metrics are still working

Metrics store is still working and collecting data.

Upgrade to 4.3 tested with: ovirt-engine-4.3.0-0.8.rc2.el7.noarch, ovirt-engine-metrics-, ansible-2.7.5-1.el7ae.noarch

Comment 6 Lucie Leistnerova 2019-02-07 13:44:00 UTC
Host 4.3 still can't be added with the same error.
I don't see new version of ovirt-engine-metrics in our testing build, only ovirt-engine-metrics-1.1.8-1.el7ev.noarch from rhel-7-server-rhv-manager repo.

Comment 7 Shirly Radco 2019-02-11 10:41:46 UTC
The build does not include ovirt-engine-metrics

Comment 13 Lucie Leistnerova 2019-02-15 09:42:02 UTC
Now is available and 4.3 host was added successfully.

verified in ovirt-engine-metrics-
with ovirt-engine-

Comment 16 errata-xmlrpc 2019-02-18 15:24:55 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.