sudo apt-get install ufw #安装防火墙
sudo ufw status #防火墙状态
sudo ufw enable #开启防火墙
sudo ufw allow 22  #开启端口
sudo ufw reload  #重启防火墙
sudo ufw delete allow 8001/tcp #关闭端口

*** ERROR: Invalid configuration for cluster creation.
*** Redis Cluster requires at least 3 master nodes.
*** This is not possible with 4 nodes and 1 replicas per node.
*** At least 6 nodes are required.

There is no normal TM

tx-lcn.manager.host=0.0.0.0

com.codingapi.txlcn.logger.AbstractTxLogger.error(AbstractTxLogger.java:70) - business code error

attempts to join the non-existent transaction group

rpc execute service error. action: joinGroup

# 分布式事务执行总时间(ms). 默认为36000
tx-lcn.manager.dtx-time=600000

(error) CLUSTERDOWN Hash slot not served

rpm -qa |grep java

rpm -qa |grep jdk

rpm -qa |grep gcj