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Add backup and restore content for tiup-cluster.md

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### First-time contributors' checklist - [ ] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs-cn) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) ###...

## Feature Request **Is your feature request related to a problem? Please describe:** After “ tiup cluster prune” ，the data in tombstone is removed but tiup does not clean the...

## Feature Request **Is your feature request related to a problem? Please describe:**  **Describe the feature you'd like:** Option 1: support --format parameter Option 2: support plain text format

## Feature Request **Is your feature request related to a problem? Please describe:** **Describe the feature you'd like:** DM needs to know grafana address to set up the WebUI. Currently...

## Feature Request **Is your feature request related to a problem? Please describe:** tiup uninstall grafana v5.4.0 Use `tiup uninstall grafana --all` if you want to remove all versions. Use...

Cluster check the memory.max or memory.limit_in_bytes of cgroup

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## Feature Request **Is your feature request related to a problem? Please describe:** Customer deploy tidb failed and do not know why: https://internal.pingcap.net/jira/browse/ONCALL-4258 **Describe the feature you'd like:** Check whether...

## Feature Request **Is your feature request related to a problem? Please describe:** **Describe the feature you'd like:** This check works with noatime nodelalloc. To verify that the partitions are...

## Feature Request **Is your feature request related to a problem? Please describe:** Customer needs to change this config but tiup cluster does not support yet. **Describe the feature you'd...

Update production-deployment-using-tiup.md

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### First-time contributors' checklist - [ ] I've signed [**Contributor License Agreement**](https://cla-assistant.io/pingcap/docs-cn) that's required for repo owners to accept my contribution. ### What is changed, added or deleted? (Required) ###...

## Feature Request **Is your feature request related to a problem? Please describe:** **Describe the feature you'd like:** In DR failover scenario, in a big cluster, some nodes are primary...