部署redis6.0 常见问题

问题1：在make的时候，提示如下错误：

server.c:5170:39: error: ‘struct redisServer’ has no member named ‘maxmemory’
if (server.maxmemory > 0 && server.maxmemory < 1024*1024) {
                                  ^
server.c:5171:176: error: ‘struct redisServer’ has no member named ‘maxmemory’
    serverLog(LL_WARNING,"WARNING: You specified a maxmemory value that is less than 1MB (current value is %llu bytes). Are you sure this is what you really want?", server.maxmemory);
                                                                                                                                                                           ^
server.c:5174:31: error: ‘struct redisServer’ has no member named ‘server_cpulist’
redisSetCpuAffinity(server.server_cpulist);

解决办法：
出现这种错误是由于gcc版本太低，升级gcc

# 查看gcc版本是否在5.3以上，centos7.6默认安装4.8.5
gcc -v
# 升级gcc到5.3及以上,如下：
升级到gcc 9.3：
yum -y install centos-release-scl
yum -y install devtoolset-9-gcc devtoolset-9-gcc-c++ devtoolset-9-binutils
scl enable devtoolset-9 bash
需要注意的是scl命令启用只是临时的，退出shell或重启就会恢复原系统gcc版本。
如果要长期使用gcc 9.3的话：
 
echo "source /opt/rh/devtoolset-9/enable" >>/etc/profile
这样退出shell重新打开就是新版的gcc了
以下其他版本同理，修改devtoolset版本号即可

原文借鉴：
https://www.cnblogs.com/blackBlog/p/12924891.html