若是登录的是集群中的节点，需要加上-c参数；否则不用加该参数
# 登录集群节点的命令 redis-cli -c -h ip -p port -a password # 登录一般节点或者从节点的命令 redis-cli -h ip -p port -a password 5.9.3 如何删除集群中无效的节点 redis-cli -c -p 7001 cluster nodes 7020c8df9423686727783c60bd2f0e367634ba84 127.0.0.1:7007@17007 master - 0 1564925352648 7 connected 0-499 4dad696ede24995a57c5fd790faa95c72c187a22 127.0.0.1:7001@17001 myself,master - 0 1564925349000 1 connected 500-5460 5612ffbb0407dbda50828b505a16b39ede51168b 127.0.0.1:7006@17006 slave 4dad696ede24995a57c5fd790faa95c72c187a22 0 1564925351000 6 connected 7d388cc31df969d3e1715ce9644318bfd48317b1 127.0.0.1:7004@17004 slave 59b6597448b668a355d85dcc7a0623bc36263e5f 0 1564925354665 4 connected bbe8b7035bfd31c47bec7d612acc112cd2869368 127.0.0.1:7003@17003 master - 0 1564925353657 3 connected 10923-16383 456921ae96af71d8183101f798cf5ceda4b0381e 127.0.0.1:7005@17005 slave bbe8b7035bfd31c47bec7d612acc112cd2869368 0 1564925349000 5 connected c3e04f0e8710c25d59703374a224ee8bec776e43 :0@0 master,fail,noaddr - 1564924804548 1564924802833 0 disconnected 59b6597448b668a355d85dcc7a0623bc36263e5f 127.0.0.1:7002@17002 master - 0 1564925352000 2 connected 5461-10922 # 如上集群中有一个无效的节点信息，要如何删除，这个还不知道咋操作。