Email Notification Images Not Working Grafana v7.0.1

[timlharrison]

What happened: After upgrading to Grafana v7.0.1, embedded graph images in email notifications stopped displaying and started showing this message:

So I installed the Grafana Image Renderer plugin and now I no longer see this, but I don't see anything at all in the email but text:

What you expected to happen: I expected images to continue working after the 7.0.1 upgrade, but was okay with installing the image renderer plugin. I expected the images to work after installing that plugin.

How to reproduce it (as minimally and precisely as possible): Install Grafana 6.7.3 on Windows Server 2016 Standard. Set up email notification alerts. Upgrade to Grafana 7.0.1. Install the Image Renderer Plugin. Note that the plugin appears to be installed correctly under Settings -> Plugins.

Anything else we need to know?: After the upgrade, I started seeing these errors in the log:

lvl=eror msg="Could not build alert model for rule" logger=alerting.ruleReader ruleId=147 error="Alert validation error: Unable to translate notification id to uid, Alert notification [ Id: 5, OrgId: 1 ] not found AlertId: 147 PanelId: 31 DashboardId: 25"

Also, my alert dashboards look fine and seem to work fine and are sending out alert notification emails as expected.

Environment:

• Grafana version: 7.0.1
• Data source type & version: Prometheus 2.18.1
• OS Grafana is installed on: Windows Server 2016 Standard
• User OS & Browser: Windows 10 Professional, Chrome
• Grafana plugins: Grafana Image Renderer 2.0.0
• Others:

[torkelo]

Please test that the image renderer plugin is working (panel menu -> share -> direct rendered image), then if no image, inspect server logs

[cbiot]

I am seeing the same results as described above. I followed torkelo's advice to show the "Direct link rendered image" and got the result shown above.

Log only shows old entries... recent alarm entries from yesterday afternoon.
to see the log entries, I typed:

` sudo systemctl status grafana-server -l

● grafana-server.service - Grafana instance
Loaded: loaded (/usr/lib/systemd/system/grafana-server.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2020-05-27 18:42:20 UTC; 20h ago
Docs: http://docs.grafana.org
Main PID: 25706 (grafana-server)
CGroup: /system.slice/grafana-server.service
├─25706 /usr/sbin/grafana-server --config=/etc/grafana/grafana.ini --pidfile=/var/run/grafana/grafana-server.pid --packaging=rpm cfg:default.paths.logs=/var/log/grafana cfg:default.paths.data=/var/lib/grafana cfg:default.paths.plugins=/var/lib/grafana/plugins cfg:default.paths.provisioning=/etc/grafana/provisioning
└─25713 /var/lib/grafana/plugins/grafana-image-renderer/plugin_start_linux_amd64
`

My experience is minimal for looking deeper. Any other ideas or suggestions?

[cbiot]

Again, my experience is limited.

Typing "uname -m" shows: x86_64
From what I understand that means "Intel" hardware.
The above paste from my log shows: "/var/lib/grafana/plugins/grafana-image-renderer/plugin_start_linux_amd64"
Is it possible that I have the wrong plugin installed?
When I installed it, I typed: grafana-cli plugins install grafana-image-renderer
and then restarted the service.

[timlharrison]

Here's what I'm seeing in the log - the image render doesn't work:

Rendering failed: Error: net::ERR_CERT_COMMON_NAME_INVALID at https://localhost:8080

I'm assuming this is because I'm using a cert that is not for https://localhost. Is there a way to tell the plugin to use a specific host name and/or ignore cert errors? It seems to be ignoring the root_url setting in the grafana config ini.

[timlharrison]

Was able to fix it by adding this to my config.ini file:

[plugin.grafana-image-renderer]
# Instruct headless browser instance whether to ignore HTTPS errors during navigation. Per default HTTPS errors are not ignored. Due to
# the security risk it's not recommended to ignore HTTPS errors.
rendering_ignore_https_errors = true

[jchavezb-37]

it is almost sure that you dont have the library libx11-xcb.so.1, so, please install it with:
apt-get install libx11-xcb-dev.

To test it, please go to any charts, click in the down arrow -> Share, then click in Direct Link Rendered Image. A Google Chrome windows must appearing with the chart.

[mikegyver99]

Google lead me here....I had same Rendering failed: Error: net::ERR_CERT_COMMON_NAME_INVALID error and this corrected it in my case.... YMMV.
grafana.ini
http_addr = <fdqn that matches the cert CN or SAN>

[aktentasche]

Hi,
I needed to install following packages on Debian 10 bullseye headless installation:

sudo apt install libxcursor1 libxss1 libpangocairo-1.0-0 libgtk-3-0

Maybe that helps someone.

(checked with trying to share a panel as image and sudo tail /var/log/grafana/grafana.log)