Add cluster version fix etcd-io#11233 and etcd-io#11254

wenjiaswe · Oct 16, 2019 · a4793be · a4793be
1 parent 7fbfdc2
commit a4793be
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Showing 2 changed files with 8 additions and 4 deletions.
diff --git a/etcdserver/membership/cluster.go b/etcdserver/membership/cluster.go
@@ -369,6 +369,7 @@ func (c *RaftCluster) SetVersion(ver *semver.Version, onSet func(*semver.Version
 	} else {
 		plog.Noticef("set the initial cluster version to %v", version.Cluster(ver.String()))
 	}
+	oldVer := c.version
 	c.version = ver
 	mustDetectDowngrade(c.version)
 	if c.store != nil {
@@ -377,8 +378,11 @@ func (c *RaftCluster) SetVersion(ver *semver.Version, onSet func(*semver.Version
 	if c.be != nil {
 		mustSaveClusterVersionToBackend(c.be, ver)
 	}
-	ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": ver.String()}).Set(1)
-    onSet(ver)
+	if oldVer != nil {
+		ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": version.Cluster(oldVer.String())}).Set(0)
+	}
+	ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": version.Cluster(ver.String())}).Set(1)
+	onSet(ver)
 }
 
 func (c *RaftCluster) IsReadyToAddNewMember() bool {

diff --git a/tests/e2e/metrics_test.go b/tests/e2e/metrics_test.go
@@ -19,7 +19,7 @@ import (
 	"strings"
 	"testing"
 
-	"go.etcd.io/etcd/version"
+	"github.com/coreos/etcd/version"
 )
 
 func TestV3MetricsSecure(t *testing.T) {
@@ -50,7 +50,7 @@ func metricsTest(cx ctlCtx) {
 	if strings.HasSuffix(ver, "+git") {
 		ver = strings.Replace(ver, "+git", "", 1)
 	}
-	if err := cURLGet(cx.epc, cURLReq{endpoint: "/metrics", expected: fmt.Sprintf(`etcd_cluster_version{cluster_version="%s"} 1`, ver), metricsURLScheme: cx.cfg.metricsURLScheme}); err != nil {
+	if err := cURLGet(cx.epc, cURLReq{endpoint: "/metrics", expected: fmt.Sprintf(`etcd_cluster_version{cluster_version="%s"} 1`, version.Cluster(version.Version)), metricsURLScheme: cx.cfg.metricsURLScheme}); err != nil {
 		cx.t.Fatalf("failed get with curl (%v)", err)
 	}
 	if err := cURLGet(cx.epc, cURLReq{endpoint: "/health", expected: `{"health":"true"}`, metricsURLScheme: cx.cfg.metricsURLScheme}); err != nil {