标题Nacos高版本启动时报错。 java.net.UnknownHostException: jmenv.tbsite.net

Caused by: java.net.UnknownHostException: jmenv.tbsite.net
        at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:567)
        at java.base/java.net.Socket.connect(Socket.java:633)
        at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:178)
        at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:532)
        at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:637)
        at java.base/sun.net.www.http.HttpClient.<init>(HttpClient.java:280)
        at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:385)
        at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:407)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1309)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1242)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1128)
        at java.base/sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1057)
        at com.alibaba.nacos.common.http.client.request.JdkHttpClientRequest.execute(JdkHttpClientRequest.java:114)
        at com.alibaba.nacos.common.http.client.NacosRestTemplate.execute(NacosRestTemplate.java:482)
        at com.alibaba.nacos.common.http.client.NacosRestTemplate.get(NacosRestTemplate.java:72)
        at com.alibaba.nacos.core.cluster.lookup.AddressServerMemberLookup.syncFromAddressUrl(AddressServerMemberLookup.java:175)
        at com.alibaba.nacos.core.cluster.lookup.AddressServerMemberLookup.run(AddressServerMemberLookup.java:143)
        ... 125 common frames omitted

解决方案

Nacos默认是集群（cluster）启动，将其设置为单机（standalone）启动则不会报这个错。若需要集群启动则需要进行相关的集群配置。

windows启动：

startup.cmd -m standalone

linux启动：

startup.sh -m standalone