Apache有时不会在重新启动后启动

有时,在我的服务器(Cent OS7,默认存储库)重新启动后,Apache不会自动启动。 要解决这个问题,我重新启动服务器一次,然后它的工作。

我的Apache错误日志显示如下:

[Mon Jun 20 00:11:34.142198 2016] [auth_digest:error] [pid 2763] (17)File exists: AH01762: Failed to create shared memory segment on file /var/logs/authdigest_shm.2763 [Mon Jun 20 00:11:34.142282 2016] [auth_digest:error] [pid 2763] (17)File exists: AH01760: failed to initialize shm - all nonce-count checking, one-time nonces, and MD5-sess algorithm disabled [Mon Jun 20 00:11:34.142286 2016] [:emerg] [pid 2763] AH00020: Configuration Failed, exiting 

我不知道如何debugging。 任何build议,欢迎。