centos7安装redis5启动报错：
Job for failed because the control process exited with error code.
See "systemctl status " and "journalctl -xe" for details.
具体错误：
-- Defined-By: systemd
-- Support: /mailman/listinfo/systemd-devel
--
-- Unit has failed.
--
-- The result is failed.
11月 12 17:55:19 VM-0-6-centos systemd[1]: Unit entered failed sta
11月 12 17:55:19 VM-0-6-centos systemd[1]: failed.
11月 12 17:55:19 VM-0-6-centos systemd[1]: holdoff time over, sche
11月 12 17:55:19 VM-0-6-centos systemd[1]: Stopped Redis 6379.
-- Subject: Unit has finished shutting down
-- Defined-By: systemd
-- Support: /mailman/listinfo/systemd-devel
--
-- Unit has finished shutting down.
11月 12 17:55:19 VM-0-6-centos systemd[1]: start request repeated too quickly for redis
11月 12 17:55:19 VM-0-6-centos systemd[1]: Failed to start Redis 6379.
-- Subject: Unit has failed
-- Defined-By: systemd
-- Support: /mailman/listinfo/systemd-devel
--
-- Unit has failed.
--
-- The result is failed.
11月 12 17:55:19 VM-0-6-centos systemd[1]: Unit entered failed sta
11月 12 17:55:19 VM-0-6-centos systemd[1]: failed.
我是参考这篇博客安装的：/qq_39228576/article/details/106939545
发现配置项中的 `logfile "/var/log/redis/"`这个是导致Redis启动失败的原因：需要自己手动建立文件夹redis和文件。
重新启动redis,发现redis终于可以启动成功啦。。。