Release v2021.08.26.2 (#997) [skip pd_pr]

* tweak: add fallback to keep compatibility in scenarios without inject distro info (#976)

* update: release version

cmd/tidb-dashboard/main.go

@@ -47,7 +47,6 @@ import (
 	keyvisualregion "github.com/pingcap/tidb-dashboard/pkg/keyvisual/region"
 	"github.com/pingcap/tidb-dashboard/pkg/swaggerserver"
 	"github.com/pingcap/tidb-dashboard/pkg/uiserver"
-	_ "github.com/pingcap/tidb-dashboard/pkg/utils/distro/populate"
 	"github.com/pingcap/tidb-dashboard/pkg/utils/version"
 )
 

pkg/utils/distro/distro.go

@@ -27,7 +27,16 @@ func Replace(distro introData) {
 }
 
 func Data(k string) string {
-	d := data.Load().(introData)
+	var d introData
+	atomd := data.Load()
+	// we need a fallback to keep compatibility in scenarios without inject distro info
+	// related issue: https://github.com/pingcap/tidb-dashboard/issues/975
+	if d == nil {
+		d = Resource
+	} else {
+		d = atomd.(introData)
+	}
+
 	if d[k] == "" {
 		return k
 	}

release-version

@@ -1,3 +1,3 @@
 # This file specifies the TiDB Dashboard internal version, which will be printed in `--version`
 # and UI. In release branch, changing this file will result in publishing a new version and tag.
-2021.08.26.1
+2021.08.26.2