安装redis集群报错

创建Redis-Cluster集群时遇到的问题 " /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError)"

[root@iZbp143t3oxhfc3ar7jey0Z bin]# redis-trib create --replicas 1 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381 127.0.0.1:6382 127.0.0.1:6383 127.0.0.1:6384
/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis (LoadError)
        from /usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in `require'
        from /usr/local/bin/redis-trib:25:in `<main>'

解决：

[root@iZbp143t3oxhfc3ar7jey0Z bin]# gem install redis
Fetching redis-4.1.3.gem
Successfully installed redis-4.1.3
Parsing documentation for redis-4.1.3
Installing ri documentation for redis-4.1.3
Done installing documentation for redis after 1 seconds
1 gem installed
[root@iZbp143t3oxhfc3ar7jey0Z bin]# redis-trib create --replicas 1 127.0.0.1:6379 127.0.0.1:6380 127.0.0.1:6381 127.0.0.1:6382 127.0.0.1:6383 127.0.0.1:6384
>>> Creating cluster
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
127.0.0.1:6379
127.0.0.1:6380
127.0.0.1:6381
Adding replica 127.0.0.1:6383 to 127.0.0.1:6379
Adding replica 127.0.0.1:6384 to 127.0.0.1:6380
Adding replica 127.0.0.1:6382 to 127.0.0.1:6381
>>> Trying to optimize slaves allocation for anti-affinity
[WARNING] Some slaves are in the same host as their master
M: 8de9ebab0e21b4343faaf0aca24f925e1b540607 127.0.0.1:6379
   slots:0-5460 (5461 slots) master
M: 3f2adf61d4cb795a425bc6371b68fc9a92a5068b 127.0.0.1:6380
   slots:5461-10922 (5462 slots) master
M: 274ad8fd63a1a18c68e5deb063d78a9a8a7ab3e9 127.0.0.1:6381
   slots:10923-16383 (5461 slots) master
S: b7011bc56dc685ceb734f3888bd6edc786b349f8 127.0.0.1:6382
   replicates 274ad8fd63a1a18c68e5deb063d78a9a8a7ab3e9
S: 106d83662a79958e0f24c9e1e3d9a51235c5fd63 127.0.0.1:6383
   replicates 8de9ebab0e21b4343faaf0aca24f925e1b540607
S: bcd235ffe5ebebfb96293fea0b4115a729a58fff 127.0.0.1:6384
   replicates 3f2adf61d4cb795a425bc6371b68fc9a92a5068b
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join....
>>> Performing Cluster Check (using node 127.0.0.1:6379)
M: 8de9ebab0e21b4343faaf0aca24f925e1b540607 127.0.0.1:6379
   slots:0-5460 (5461 slots) master
   1 additional replica(s)
M: 3f2adf61d4cb795a425bc6371b68fc9a92a5068b 127.0.0.1:6380
   slots:5461-10922 (5462 slots) master
   1 additional replica(s)
M: 274ad8fd63a1a18c68e5deb063d78a9a8a7ab3e9 127.0.0.1:6381
   slots:10923-16383 (5461 slots) master
   1 additional replica(s)
S: bcd235ffe5ebebfb96293fea0b4115a729a58fff 127.0.0.1:6384
   slots: (0 slots) slave
   replicates 3f2adf61d4cb795a425bc6371b68fc9a92a5068b
S: 106d83662a79958e0f24c9e1e3d9a51235c5fd63 127.0.0.1:6383
   slots: (0 slots) slave
   replicates 8de9ebab0e21b4343faaf0aca24f925e1b540607
S: b7011bc56dc685ceb734f3888bd6edc786b349f8 127.0.0.1:6382
   slots: (0 slots) slave
   replicates 274ad8fd63a1a18c68e5deb063d78a9a8a7ab3e9
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
[root@iZbp143t3oxhfc3ar7jey0Z bin]#

如果你ruby安装的版本过低，可以看这篇博客：https://www.cnblogs.com/dalianpai/p/12686271.html