Springboot启动提示：com.alibaba.nacos.shaded.io.grpc.StatusRuntimeException: UNAVAILAB

nginx配置nacos的grpc连接

报错信息：
java.util.concurrent.TimeoutException: Waited 3000 milliseconds (plus 501200 nanoseconds delay) for com.alibaba.nacos.shaded.io.grpc.stub.ClientCallsKaTeX parse error: Expected '}', got 'EOF' at end of input: ….ProtoLiteUtilsMessageMarshaller@5981f4a6, responseMarshaller=com.alibaba.nacos.shaded.io.grpc.protobuf.lite.ProtoLiteUtils$MessageMarshaller@63dfada0,schemaDescriptor=com.alibaba.nacos.api.grpc.auto.RequestGrpc$RequestMethodDescriptorSupplier@6f231ced}}}}}]]
at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:508) ~[nacos-client-2.0.4.jar:na]
java.util.concurrent.ExecutionException: com.alibaba.nacos.shaded.io.grpc.StatusRuntimeException: UNAVAILABLE: io exception
at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:566) ~[nacos-client-2.0.4.jar:na]
at com.alibaba.nacos.shaded.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:445) ~[nacos-client-2.0.4.jar:na]

解决方案：

1、暴露 nacos 集群的端口偏移1000

例如：nacos默认端口8848，需要把9848（8848+1000）也暴露出来

注意：如果是docker集群部署还需要把 7848 端口也一起暴露出来。（7848 端口则用于节点选举来确定集群领袖 Leader）

2、修改 nginx.conf 的文件

http {
	# 负载均衡配置
	upstream lb-nocos{
		server 127.0.0.1:8845 weight=1;
		server 127.0.0.1:8847 weight=1;
		server 127.0.0.1:8849 weight=1;
	}
	# nacos服务配置
	server {
        listen       8848;
        server_name  localhost;
		location / {
			# 反向代理
			proxy_pass http://lb-nocos;
        }
	}
}

# nacos的grpc协议配置
stream {
       # 负载均衡配置（TCP长连接配置）
       upstream lb-nocos-tcp{
         server 127.0.0.1:9845 weight=1;
         server 127.0.0.1:9847 weight=1;
         server 127.0.0.1:9849 weight=1;
       }

        server {
          listen 9848;
          proxy_pass lb-nocos-tcp;
        }
}

集群部署参考：https://blog.csdn.net/weixin_51311218/article/details/122617027