Datasource ${DS_PROMETHEUS} was not found for synapse dashboard

[e-g1gor]

Describe the bug

Grafana synapse dashboard not work. Probably related to https://github.com/grafana/grafana/issues/10786#issuecomment-392377975 and https://github.com/grafana/grafana/issues/11018

Synapse dashboard settings in graphana UI

For comparison, working node-exporter settings

To Reproduce My vars.yml file looks like this:

ntfy_enabled: true
matrix_homeserver_implementation: "synapse"
matrix_playbook_reverse_proxy_type: "playbook-managed-traefik"

matrix_synapse_federation_enabled: false
matrix_synapse_federation_domain_whitelist: []
matrix_synapse_allow_public_rooms_over_federation: false
matrix_synapse_federation_port_enabled: false
matrix_nginx_proxy_proxy_matrix_federation_api_enabled: false
matrix_synapse_reverse_proxy_companion_federation_api_enabled: false
matrix_synapse_enable_registration: false
matrix_synapse_enable_registration: false
matrix_synapse_enable_registration_without_verification: false
matrix_synapse_report_stats: false
matrix_synapse_admin_enabled: true

devture_traefik_config_log_level: "DEBUG"
devture_traefik_dashboard_enabled: true
devture_traefik_dashboard_hostname: "{{ matrix_server_fqn_matrix }}"
devture_traefik_dashboard_basicauth_enabled: true

prometheus_enabled: true
prometheus_node_exporter_enabled: true
prometheus_postgres_exporter_enabled: true
matrix_prometheus_nginxlog_exporter_enabled: true

grafana_enabled: true
grafana_anonymous_access: false

Fresh install

Expected behavior A clear and concise description of what you expected to happen.

Matrix Server:

• OS: Fedora
• Architecture: x86_64

[timlepes]

I am having the same problem. I only encountered the problem after upgrading. Previously, I had been using the included Prometheus/Grafana stuff as it was back in February, I believe. Everything was fine.

There was a change made on 2023-03-21 - The matrix-prometheus role lives independently now since my prior update. After updating and including the changes, I now get the same error as reported here in my Grafana dasahboard: "Datasource named ${DS_PROMETHEUS} was not found".

I am not very familiar with Grafana or how to configure it, as my only experience has been through this playbook. I am going to attempt to find my "raw json" and see if I can figure out how to set my UIDs to null, as suggested in the (very old) linked Grafana project issues. In the meantime, I am hoping that adding myself to the issue will help raise it. If there is anything I can provide from my configuration, let me know and I'll be happy to post it.

[QEDeD]

Also experiencing this.

[sarah4d2]

We're also seeing this after enabling Prometheus and Grafana in vars.yml on an existing install (Debian x86_64).

[MichaelSasser]

I don't think it's an issue with the playbook. In the Dashboard's JSON model is quite a mishmash of datasource UIDs for the "prometheus" datasource type. For example:

• "uid": "000000001"
• "uid": "${DS_PROMETHEUS}"
• "uid": "$datasource"

If you decide on one by replacing the others in Settings -> JSON Model (including the respective variables), everything works as expected.

---

Related issue: https://github.com/matrix-org/synapse/issues/16405 (closed as fixed) Related PR: https://github.com/matrix-org/synapse/pull/16471 (merged)

[joecool1029]

@e-g1gor are you still affected? We're not able to reproduce the error for a month or so, it appears the fix has landed. Please close if it's resolved on your end.

[QEDeD]

Looks like the issue is resolved for me at least.