Support config adapt to mysql 8.3.0

Author: drivebyer

pkg/controller/mysqlcluster/internal/syncer/config_map.go

@@ -22,6 +22,7 @@ import (
 	"sort"
 	"strings"
 
+	"github.com/blang/semver"
 	"github.com/go-ini/ini"
 	core "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -96,15 +97,16 @@ fi
 func buildMysqlConfData(cluster *mysqlcluster.MysqlCluster) (string, error) {
 	cfg := ini.Empty()
 	sec := cfg.Section("mysqld")
-
-	if cluster.GetMySQLSemVer().Major == 5 {
+	version := cluster.GetMySQLSemVer()
+	if version.Major == 5 {
 		addKVConfigsToSection(sec, convertMapToKVConfig(mysql5xConfigs))
-	} else if cluster.GetMySQLSemVer().Major == 8 {
+	} else if version.Major == 8 {
 		addKVConfigsToSection(sec, convertMapToKVConfig(mysql8xConfigs))
 	}
 
 	// boolean configs
 	addBConfigsToSection(sec, mysqlMasterSlaveBooleanConfigs)
+	addConfigsToSectionByVersion(sec, version)
 	// add custom configs, would overwrite common configs
 	addKVConfigsToSection(sec, convertMapToKVConfig(mysqlCommonConfigs), cluster.Spec.MysqlConf)
 
@@ -170,6 +172,37 @@ func addBConfigsToSection(s *ini.Section, boolConfigs ...[]string) {
 	}
 }
 
+func addConfigsToSectionByVersion(s *ini.Section, version semver.Version) {
+	// cannot find which version exactly removes the --skip-host-cache option
+	// but in https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-30.html, it is deprecated.
+	if version.GTE(semver.MustParse("8.0.30")) {
+		// set host_cache_size to 0 for backward compatibility
+		_, err := s.NewKey("host_cache_size ", "0")
+		if err != nil {
+			log.Error(err, "failed to add key to config section", "key", "host_cache_size", "value", "0")
+		}
+	} else {
+		_, err := s.NewBooleanKey("skip-host-cache")
+		if err != nil {
+			log.Error(err, "failed to add boolean key to config section", "key", "skip-host-cache")
+		}
+	}
+
+	// https://dev.mysql.com/doc/relnotes/mysql/8.3/en/news-8-3-0.html
+	if version.LT(semver.MustParse("8.3.0")) {
+		_, err := s.NewKey("relay-log-info-repository", "TABLE")
+		if err != nil {
+			log.Error(err, "failed to add key to config section", "key", "relay-log-info-repository", "value", "TABLE")
+		}
+
+		// https://github.com/github/orchestrator/issues/323#issuecomment-338451838
+		_, err = s.NewKey("master-info-repository", "TABLE")
+		if err != nil {
+			log.Error(err, "failed to add key to config section", "key", "master-info-repository", "value", "TABLE")
+		}
+	}
+}
+
 // helper function to write to string ini.File
 // nolint: interfacer
 func writeConfigs(cfg *ini.File) (string, error) {
@@ -191,11 +224,7 @@ var mysqlCommonConfigs = map[string]string{
 	"skip-slave-start": "on",
 
 	// Crash safe
-	"relay-log-info-repository": "TABLE",
-	"relay-log-recovery":        "on",
-
-	// https://github.com/github/orchestrator/issues/323#issuecomment-338451838
-	"master-info-repository": "TABLE",
+	"relay-log-recovery": "on",
 
 	"default-storage-engine":   "InnoDB",
 	"gtid-mode":                "on",
@@ -256,5 +285,4 @@ var mysql8xConfigs = map[string]string{
 var mysqlMasterSlaveBooleanConfigs = []string{
 	// Safety
 	"skip-name-resolve",
-	"skip-host-cache",
 }