117笔记问答在Linux上安装Redis集群可以通过以下步骤完成：
- 下载Redis源码并解压缩：
wget http://download.redis.io/releases/redis-x.x.x.tar.gz tar xzf redis-x.x.x.tar.gz cd redis-x.x.x
- 编译Redis源码：
make
- 创建Redis集群配置文件并配置集群节点：
cp redis.conf redis-7000.conf cp redis.conf redis-7001.conf cp redis.conf redis-7002.conf cp redis.conf redis-7003.conf cp redis.conf redis-7004.conf cp redis.conf redis-7005.conf vim redis-7000.conf port 7000 cluster-enabled yes cluster-config-file nodes-7000.conf cluster-node-timeout 5000 vim redis-7001.conf port 7001 cluster-enabled yes cluster-config-file nodes-7001.conf cluster-node-timeout 5000 vim redis-7002.conf port 7002 cluster-enabled yes cluster-config-file nodes-7002.conf cluster-node-timeout 5000 vim redis-7003.conf port 7003 cluster-enabled yes cluster-config-file nodes-7003.conf cluster-node-timeout 5000 vim redis-7004.conf port 7004 cluster-enabled yes cluster-config-file nodes-7004.conf cluster-node-timeout 5000 vim redis-7005.conf port 7005 cluster-enabled yes cluster-config-file nodes-7005.conf cluster-node-timeout 5000
- 启动Redis集群节点：
src/redis-server redis-7000.conf src/redis-server redis-7001.conf src/redis-server redis-7002.conf src/redis-server redis-7003.conf src/redis-server redis-7004.conf src/redis-server redis-7005.conf
- 创建Redis集群：
src/redis-cli --cluster create 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 --cluster-replicas 1
这样就完成了在Linux上安装Redis集群的步骤。需要注意的是，在创建集群时需要指定好每个节点的IP和端口，并且要确保每个节点的配置文件中的cluster-enabled配置项为yes。