Configurando Embedding on para permitir apresentar dashboards grafana em Iframes

Edite o arquivo /etc/grafana/grafana.ini

$ nano /etc/grafana/grafana.ini

[security]

[security]
...
# set to true if you host Grafana behind HTTPS. default is false.
cookie_secure = true

# set cookie SameSite attribute. defaults to `lax`. can be set to "lax", "strict", "none" and "disabled"
cookie_samesite = none

# set to true if you want to allow browsers to render Grafana in a <frame>, <iframe>, <embed> or <object>. default is false.
allow_embedding = true
...

[auth.anonymous]

[auth.anonymous]
# enable anonymous access
enabled = true

# specify organization name that should be used for unauthenticated users
org_name = dnk

# specify role for unauthenticated users
org_role = Viewer

# mask the Grafana version number for unauthenticated users
;hide_version = false

Reinicie o servidor grafana

$ sudo service grafana restart
or
$ docker restart grafana