Bump v1.2.1 (#861)

CHANGELOG.md

@@ -1,5 +1,26 @@
 TiUP Changelog
 
+## [1.2.1] 2020.10.23
+
+### Improvements
+
+- Introduce a more safe way to cleanup tombstone nodes ([#858](https://github.com/pingcap/tiup/pull/858), [@lucklove](https://github.com/lucklove))
+  - When an user `scale-in` a TiKV server, it's data is not deleted until the user executes a `display` command, it's risky because there is no choice for user to confirm
+  - We have add a `prune` command for the cleanup stage, the display command will not cleanup tombstone instance any more
+- Skip auto-start the cluster before the scale-out action because there may be some damaged instance that can't be started ([#848](https://github.com/pingcap/tiup/pull/848), [@lucklove](https://github.com/lucklove))
+  - In this version, the user should make sure the cluster is working correctly by themselves before executing `scale-out`
+- Introduce a more graceful way to check TiKV labels ([#843](https://github.com/pingcap/tiup/pull/843), [@lucklove](https://github.com/lucklove))
+  - Before this change, we check TiKV labels from the config files of TiKV and PD servers, however, servers imported from tidb-ansible deployment don't store latest labels in local config, this causes inaccurate label information
+  - After this we will fetch PD and TiKV labels with PD api in display command
+
+### Fixes
+
+- Fix the issue that there is datarace when concurrent save the same file ([#836](https://github.com/pingcap/tiup/pull/836), [@9547](https://github.com/9547))
+  - We found that while the cluster deployed with TLS supported, the ca.crt file was saved multi times in parallel, this may lead to the ca.crt file to be left empty
+  - The influence of this issue is that the tiup client may not communicate with the cluster
+- Fix the issue that files copied by TiUP may have different mode with origin files ([#844](https://github.com/pingcap/tiup/pull/844), [@lucklove](https://github.com/lucklove))
+- Fix the issue that the tiup script not updated after `scale-in` PD ([#824](https://github.com/pingcap/tiup/pull/824), [@9547](https://github.com/9547))
+
 ## [1.2.0] 2020.09.29
 
 ### New Features

pkg/version/version.go

@@ -24,7 +24,7 @@ var (
 	// TiUPVerMinor is the minor version of TiUP
 	TiUPVerMinor = 2
 	// TiUPVerPatch is the patch version of TiUP
-	TiUPVerPatch = 0
+	TiUPVerPatch = 1
 	// TiUPVerName is alternative name of the version
 	TiUPVerName = "tiup"
 	// GitHash is the current git commit hash