Linux 即使在强制终止后，RHEL7上的httpd服务也会自动重新启动

每次我停止httpd服务时，它都会自动启动。下面是配置文件

[root@server ~]# cat /usr/lib/systemd/system/httpd.service
[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target
Documentation=man:httpd(8)
Documentation=man:apachectl(8)

[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
# We want systemd to give httpd some time to finish gracefully, but still want
# it to kill httpd after TimeoutStopSec if something went wrong during the
# graceful stop. Normally, Systemd sends SIGTERM signal right after the
# ExecStop, which would kill httpd. We are sending useless SIGCONT here to give
# httpd time to finish.
KillSignal=SIGCONT
PrivateTmp=true

[Install]
WantedBy=multi-user.target

当我停止服务“systemctl stop httpd”时，我会在audit.log中看到以下行

type=SERVICE_STOP msg=audit(1532445336.059:18928): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=httpd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'

几秒钟之内，我立即在日志文件中看到下面的条目，说明服务启动命令已经执行

type=SERVICE_START msg=audit(1532445411.613:18931): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=httpd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'

看起来systemd正在自动启动服务，但我在配置文件中没有看到“Restart=always”

[root@server ~]# cat /usr/lib/systemd/system/httpd.service
[Unit]
Description=The Apache HTTP Server
After=network.target remote-fs.target nss-lookup.target
Documentation=man:httpd(8)
Documentation=man:apachectl(8)

[Service]
Type=notify
EnvironmentFile=/etc/sysconfig/httpd
ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND
ExecReload=/usr/sbin/httpd $OPTIONS -k graceful
ExecStop=/bin/kill -WINCH ${MAINPID}
# We want systemd to give httpd some time to finish gracefully, but still want
# it to kill httpd after TimeoutStopSec if something went wrong during the
# graceful stop. Normally, Systemd sends SIGTERM signal right after the
# ExecStop, which would kill httpd. We are sending useless SIGCONT here to give
# httpd time to finish.
KillSignal=SIGCONT
PrivateTmp=true

[Install]
WantedBy=multi-user.target

我甚至试过下面的，没有帮助

[Service]
Restart=on-failure

---

查看完整配置的systemctl show httpd

其他一些东西可能正在启动httpd服务器，例如套接字激活或systemd计时器

如果您不想启动服务，您可以在停止服务后使用

systemctl-mask-httpd

，但请小心使用--它也不会在启动时启动

unmask

重新开始使用该服务