pgpool-II 安装过程连接报错，求大神帮忙看下

psql -h 10.81.2.31 -d postgres -p 9999 -U postgres

[postgres@node1 bin]$ psql -h 10.81.2.31 -d postgres -p 9999 -U postgres
psql: could not connect to server: Connection refused
Is the server running on host "10.81.2.31" and accepting
TCP/IP connections on port 9999?

ps -ef|grep pgpool，查看pgpool进程是否运行了

开放防火墙9999端口试试