아파치가 갑자기 죽었어요. 도와주세요..

[Fri Feb 22 13:52:07.293456 2019] [core:notice] [pid 13173] SELinux policy enabled; httpd running as context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
[Fri Feb 22 13:52:07.318208 2019] [auth_digest:notice] [pid 13184] AH01757: generating secret for digest authentication ...
[Fri Feb 22 13:52:07.318337 2019] [auth_digest:error] [pid 13184] (17)File exists: AH01762: Failed to create shared memory segment on file /httpd/run/authdigest_shm.13184
[Fri Feb 22 13:52:07.318348 2019] [auth_digest:error] [pid 13184] (17)File exists: AH01760: failed to initialize shm - all nonce-count checking, one-time nonces, and MD5-sess algorithm disabled
[Fri Feb 22 13:52:07.318351 2019] [:emerg] [pid 13184] AH00020: Configuration Failed, exiting

selinux 관련된 작업은 없었대요...

검색해보니 https://ma.ttias.be/apache-2-4-ah01762-ah01760-failed-to-initialize-shm-shared-memory-segment/ 이런게 있네요.

If I traced this, I noticed the directory /run/httpd no longer existed. The simple fix in this case, was to re-create that missing directory.

httpd가 없었다고 합니다....