由于StarRocks FE 元数据空间异常增长，占满磁盘空间] 参考了(StarRocks FE 元数据空间异常增长，占满磁盘空间)
进行升级，升级到了2.2.11，一直各种不行，然后重启服务器，最后慢慢好像可以了，用Navicat可以连接到 strarcocks 集群了，但是有些用户之前一直能连接的，现在拒绝连接，密码错误，datax同步数据也无法连接，2023-02-15 14:28:08.198 [Thread-1] WARN StarRocksStreamLoadVisitor - Failed to connect to address:http://172.31.2.234:8030
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_281]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:476) ~[na:1.8.0_281]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:218) ~[na:1.8.0_281]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:200) ~[na:1.8.0_281]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:394) ~[na:1.8.0_281]
at java.net.Socket.connect(Socket.java:606) ~[na:1.8.0_281]
at sun.net.NetworkClient.doConnect(NetworkClient.java:175) ~[na:1.8.0_281]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:463) ~[na:1.8.0_281]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:558) ~[na:1.8.0_281]
at sun.net.www.http.HttpClient.(HttpClient.java:242) ~[na:1.8.0_281]
at sun.net.www.http.HttpClient.New(HttpClient.java:339) ~[na:1.8.0_281]
at sun.net.www.http.HttpClient.New(HttpClient.java:357) ~[na:1.8.0_281]
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1226) ~[na:1.8.0_281]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1162) ~[na:1.8.0_281]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1056) ~[na:1.8.0_281]
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:990) ~[na:1.8.0_281]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.manager.StarRocksStreamLoadVisitor.tryHttpConnection(StarRocksStreamLoadVisitor.java:88) [starrockswriter-release.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.manager.StarRocksStreamLoadVisitor.getAvailableHost(StarRocksStreamLoadVisitor.java:76) [starrockswriter-release.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.manager.StarRocksStreamLoadVisitor.doStreamLoad(StarRocksStreamLoadVisitor.java:44) [starrockswriter-release.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.manager.StarRocksWriterManager.asyncFlush(StarRocksWriterManager.java:161) [starrockswriter-release.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.manager.StarRocksWriterManager.access$000(StarRocksWriterManager.java:21) [starrockswriter-release.jar:na]
at com.starrocks.connector.datax.plugin.writer.starrockswriter.manager.StarRocksWriterManager$1.run(StarRocksWriterManager.java:132) [starrockswriter-release.jar:na]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_281]
查看日志也经常有这个的告警信息；
023-02-14 23:59:57,814 WARN (heartbeat-mgr-pool-0|107) [Util.getResultForUrl():337] failed to get result from url: http://172.31.2.234:8030/api/bootstrap?cluster_id=285003831&token=a4780cd3-2e1e-4e58-9cde-1728bacd9929. Connection refused (Connection refused)
2023-02-14 23:59:57,816 WARN (heartbeat mgr|25) [HeartbeatMgr.runAfterCatalogReady():142] get bad heartbeat response: type: FRONTEND, status: BAD, msg: got exception, name: 172.31.2.234_9010_1634887270754, queryPort: 0, rpcPort: 0, replayedJournalId: 0, feStartTime: \N, feVersion: null