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update-ngm-reload-for-dashboard (#7726) #7739

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merged 3 commits into from
Mar 3, 2022
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update-ngm-reload-for-dashboard (#7726) #7739

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update-ngm-reload-for-dashboard
shichun-0415 Mar 2, 2022
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Add back aliases
shichun-0415 Mar 2, 2022
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Update dashboard/dashboard-faq.md
shichun-0415 Mar 2, 2022
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29 changes: 23 additions & 6 deletions dashboard/dashboard-faq.md
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@@ -1,6 +1,7 @@
---
title: TiDB Dashboard FAQ
summary: Learn about the frequently asked questions (FAQs) and answers about TiDB Dashboard.
aliases: ['/docs/dev/dashboard/dashboard-faq/']
---

# TiDB Dashboard FAQ
Expand Down Expand Up @@ -114,15 +115,31 @@ Step 1. Check versions
tiup update --all
```

Step 2. Reload Prometheus
Step 2. Add the ng_port configuration item on the control machine by using TiUP. Then reload Prometheus.

On the control machine, reload Prometheus by using TiUP:
1. Open the cluster configuration file in editing mode:

{{< copyable "shell-regular" >}}
{{< copyable "shell-regular" >}}

```shell
tiup cluster edit-config ${cluster-name}
```

```shell
tiup cluster reload ${cluster-name} --role prometheus
```
2. Under `monitoring_servers`, add the `ng_port:${port}` parameter:

```
monitoring_servers:
- host: 172.16.6.6
ng_port: ${port}
```

3. Reload Prometheus:

{{< copyable "shell-regular" >}}

```shell
tiup cluster reload ${cluster-name} --role prometheus
```

After performing the preceding steps, enable Continuous Profiling on TiDB Dashboard. If NgMonitoring still fails to be started, contact PingCAP technical support for help.

Expand Down