The oVirt version I'm using is 4.3, and I get an error when I import JSON.

pq: relation"v4_4_latest_configuration_datacenters" does not exist.

 

 

 

From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Michal Gutowski
Sent: Wednesday, November 25, 2020 12:26 AM
To: Vrgotic, Marko <M.Vrgotic@activevideo.com>
Cc: users@ovirt.org
Subject: [ovirt-users] Re: oVirt 4.3 DWH with Grafana

 

Hi Marko,



I've tested this myself as I like playing with various Grafana use-cases and following steps allow you to set up Grafana Monitoring for your oVirt 4.3 environment and re-use all Grafana Dashboards from latest oVirt 4.4 on a previous release.

 

1. Allowing Grafana to connect to oVirt DWH database (Data Warehouse)

 

Login to the oVirt engine 4.3 and create a user "grafana" with password "grafana" that will get a read-only access to the ovirt_engine_history database and will be able to use public schema

 

# su - postgres -c 'scl enable rh-postgresql10 bash'

# psql -U postgres -c "CREATE ROLE grafana WITH LOGIN ENCRYPTED PASSWORD 'grafana';" -d ovirt_engine_history

# psql -U postgres -c "GRANT CONNECT ON DATABASE ovirt_engine_history TO grafana;"

# psql -U postgres -c "GRANT USAGE ON SCHEMA public TO grafana;" ovirt_engine_history

 

Generate the rest of the permissions that will be granted to the newly created user and save them to a file:

 

# psql -U postgres -c "SELECT 'GRANT SELECT ON ' || relname || ' TO grafana;' FROM pg_class JOIN pg_namespace ON pg_namespace.oid = pg_class.relnamespace WHERE nspname = 'public' AND relkind IN ('r', 'v');" --pset=tuples_only=on  ovirt_engine_history > grant.sql

 

Use the file you created in the previous step to grant permissions to the newly created user:

# psql -U postgres -f grant.sql ovirt_engine_history

 

Remove the file you used to grant permissions:

# rm grant.sql

 

Exit the postgres user shell by pressing Ctrl+d

 

Add the following lines for the newly created user to /var/opt/rh/rh-postgresql10/lib/pgsql/data/pg_hba.conf preceding the line beginning local all all

 

host    ovirt_engine_history grafana 0.0.0.0/0               md5

host    ovirt_engine_history grafana ::0/0                   md5

 

Reload postgres service

# systemctl reload rh-postgresql10-postgresql

 

2. Installing Grafana

 

You can install Grafana directly on the oVirt Engine machine (this is how it's done in oVirt 4.4) or on a separate machine. Following steps shows how you can install Grafana on a Oracle Linux 7 server. Note: Oracle provides Grafana in the OLCNE yum repository - you only need to install the repository definition package to pickup Grafana and it's dependencies.

 

# yum install oraclelinux-release-el7

# yum install oracle-olcne-release-el7

# yum-config-manager --enable ol7_optional_latest ol7_olcne11

# yum install grafana

# systemctl enable --now grafana-server

 

3. Adding oVirt DWH database as Data Source in Grafana

 

Login to Grafana (default port 3000) and navigate to Configuration -> DataSources and click on Add Data Source button.

 

Select PostgreSQL source and use the following settings (adjust the Host IP address to match your oVirt Engine IP but do not change the Name):

Name: oVirt DWH

Host: your-engine-ip-address:5432

user: grafana

pass: grafana

SSL mode: disable

 

4. Importing Dashboards from oVirt 4.4

 

Download Grafana Dashboards from oVirt 4.4 repository: https://github.com/oVirt/ovirt-dwh/tree/master/packaging/conf/grafana-dashboards

 

You can now import them in Grafana by navigating to Create -> Import and clicking on Upload .json file or by simply pasting JSON content.

 

I've tested this on my OLVM/oVirt 4.3 and works perfectly well.

 

Have fun!

Michal



Michał Gutowski

Principal Solutions Engineer, EMEA 

+48 665 222 979

 

Oracle Open Cloud Infrastructure Software - Linux & Virtualization



On 24 Nov 2020, at 11:53, Vrgotic, Marko <M.Vrgotic@activevideo.com> wrote:

 

Dear oVirt folks,

 

Thank you all for suggestions.

 

I will give it a go and see how far I get.

 

-----

kind regards/met vriendelijke groeten

 

Marko Vrgotic
Sr. System Engineer @ System Administration


ActiveVideo

o: +31 (35) 6774131

m: +31 (65) 5734174

 

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From: Yedidyah Bar David <didi@redhat.com>
Date: Sunday, 22 November 2020 at 08:39
To: "Vrgotic, Marko" <M.Vrgotic@activevideo.com>
Cc: "users@ovirt.org" <users@ovirt.org>
Subject: Re: [ovirt-users] oVirt 4.3 DWH with Grafana

 

***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!***

On Fri, Nov 20, 2020 at 8:45 AM Vrgotic, Marko <M.Vrgotic@activevideo.com> wrote:

Dear oVirt,

 

We are currently running oVirt 4.3 and upgrade/migration to 4.4 won’t be possible for few more months.

 

I am looking into guidelines, how to, for setting up Grafana using DataWarehouse as data source.

 

Did anyone already did this, and would be willing to share the steps?

 

AFAIU this is definitely not tested/recommended/supported, but the current (4.4) dashboards use only 4.3 dwh compatibility views. So in theory, 4.4 grafana setup can work against your 4.3 engine/dwh without problems. So you can try something like:

 

1. Install el8 on some machine

2. Install ovirt-release (4.4!)

3. Install ovirt-engine-dwh-grafana-integration-setup. I *think*, didn't try, that it would carry with it all the dependencies it needs.

4. Run engine-setup. When prompted, only accept "Configure grafana?", and reply "No" to everything else

5. Follow the other prompts as applicable

 

This should be enough.

 

Not sure about the commands to add SSO on the engine machine. Perhaps better verify this first against a test engine (can be on another el7/ovirt4.3 VM with no hosts).

 

But, repeating: this isn't recommended.

 

Did you consider upgrading only your engine, and keep your hosts 4.3 until you can upgrade them later?

 

Best regards,

-- 

Didi

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