Apache server无法启动，请大家帮忙看一下是什么原因。谢谢！
[root@tcmobtool ssl]# systemctl status httpd.service
● httpd.service - The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sat 2020-03-07 22:18:35 EST; 1min 58s ago
Docs: man:httpd(8)
man:apachectl(8)
Process: 8406 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=1/FAILURE)
Process: 8403 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND (code=exited, status=1/FAILURE)
Main PID: 8403 (code=exited, status=1/FAILURE)
Mar 07 22:18:35 tcmobtool systemd[1]: Starting The Apache HTTP Server...
Mar 07 22:18:35 tcmobtool systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
Mar 07 22:18:35 tcmobtool kill[8406]: kill: cannot find process ""
Mar 07 22:18:35 tcmobtool systemd[1]: httpd.service: control process exited, code=exited status=1
Mar 07 22:18:35 tcmobtool systemd[1]: Failed to start The Apache HTTP Server.
Mar 07 22:18:35 tcmobtool systemd[1]: Unit httpd.service entered failed state.
Mar 07 22:18:35 tcmobtool systemd[1]: httpd.service failed.
[root@tcmobtool ssl]# journalctl -xe
Mar 07 22:20:56 tcmobtool sshd[8469]: input_userauth_request: invalid user bugzilla [preauth]
Mar 07 22:20:56 tcmobtool sshd[8469]: pam_unix(sshd:auth): check pass; user unknown
Mar 07 22:20:56 tcmobtool sshd[8469]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.209.194.217
Mar 07 22:20:58 tcmobtool sshd[8469]: Failed password for invalid user bugzilla from 134.209.194.217 port 55304 ssh2
Mar 07 22:20:58 tcmobtool sshd[8469]: Received disconnect from 134.209.194.217 port 55304:11: Bye Bye [preauth]
Mar 07 22:20:58 tcmobtool sshd[8469]: Disconnected from 134.209.194.217 port 55304 [preauth]
Mar 07 22:21:02 tcmobtool sssd_be[796]: GSSAPI client step 1
Mar 07 22:21:02 tcmobtool sssd_be[796]: GSSAPI client step 1
Mar 07 22:21:02 tcmobtool sssd_be[796]: GSSAPI client step 1
Mar 07 22:21:02 tcmobtool sssd_be[796]: GSSAPI client step 2
Mar 07 22:21:02 tcmobtool unix_chkpwd[8476]: password check failed for user (root)
Mar 07 22:21:02 tcmobtool sshd[8472]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=41.221.168.167 user=root
Mar 07 22:21:02 tcmobtool sshd[8472]: pam_succeed_if(sshd:auth): requirement "uid >= 1000" not met by user "root"
Mar 07 22:21:02 tcmobtool sshd[8471]: reverse mapping checking getaddrinfo for broadband.actcorp.in [106.51.3.214] failed - POSSIBLE BREAK-IN ATTEMPT!
Mar 07 22:21:02 tcmobtool unix_chkpwd[8477]: password check failed for user (root)
Mar 07 22:21:02 tcmobtool sshd[8471]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=106.51.3.214 user=root
Mar 07 22:21:02 tcmobtool sshd[8471]: pam_succeed_if(sshd:auth): requirement "uid >= 1000" not met by user "root"
Mar 07 22:21:04 tcmobtool sshd[8472]: Failed password for root from 41.221.168.167 port 33809 ssh2
Mar 07 22:21:04 tcmobtool sshd[8471]: Failed password for root from 106.51.3.214 port 46408 ssh2
Mar 07 22:21:04 tcmobtool sshd[8472]: Received disconnect from 41.221.168.167 port 33809:11: Bye Bye [preauth]
Mar 07 22:21:04 tcmobtool sshd[8472]: Disconnected from 41.221.168.167 port 33809 [preauth]
Mar 07 22:21:04 tcmobtool sshd[8471]: Received disconnect from 106.51.3.214 port 46408:11: Bye Bye [preauth]
Mar 07 22:21:04 tcmobtool sshd[8471]: Disconnected from 106.51.3.214 port 46408 [preauth]
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