Apache Web 伺服器正在執行但 httpd 未執行

我面臨一個奇怪的問題。當我通過連結到它的域訪問我的伺服器的 Web 可訪問目錄時。它說：-

Not Found
The requested URL / was not found on this server.

當我在我的伺服器上（通過 putty）執行這個命令時，它顯示了幾個程序 ID，表明 Apache Web 伺服器正在執行（糾正我）。

root@...:~# pgrep apache
4733
13505
13506
13507
13508
13686
14199
17672

但是當我執行這個命令時，它說 httpd: unrecognized service

root@...:~# service httpd status
httpd: unrecognized service

其他一些命令輸出：-

root@...:~# ps aux|grep -i http
root     29401  0.0  0.0   6460   792 pts/0    S+   02:21   0:00 grep --color=auto -i http

root@...:~# chkconfig --list | grep httpd
-bash: chkconfig: command not found

root@...:~# find / -name httpd*
/var/www/vhosts/lvps5-35-241-230.dedicated.hosteurope.de/httpdocs
/var/www/vhosts/.skel/0/httpdocs
/opt/psa/var/httpd_restart
/usr/lib/apache2/modules/httpd.exp
/usr/share/doc/apache2-doc/manual/fr/programs/httpd.html
/usr/share/doc/apache2-doc/manual/pt-br/programs/httpd.html
/usr/share/doc/apache2-doc/manual/da/programs/httpd.html
/usr/share/doc/apache2-doc/manual/zh-cn/programs/httpd.html
/usr/share/doc/apache2-doc/manual/tr/programs/httpd.html
/usr/share/doc/apache2-doc/manual/en/programs/httpd.html
/usr/share/doc/apache2-doc/manual/ja/programs/httpd.html
/usr/share/doc/apache2-doc/manual/ko/programs/httpd.html
/usr/share/doc/apache2-doc/manual/de/programs/httpd.html
/usr/share/doc/apache2-doc/manual/es/programs/httpd.html
/usr/share/doc/apache2-doc/examples/apache2/original/httpd.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-autoindex.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-manual.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-userdir.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-vhosts.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-languages.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-ssl.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-mpm.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-multilang-errordoc.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-default.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-dav.conf
/usr/share/doc/apache2-doc/examples/apache2/original/extra/httpd-info.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-autoindex.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-manual.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-userdir.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-vhosts.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-languages.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-ssl.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-mpm.conf.gz
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-multilang-errordoc.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-default.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-dav.conf
/usr/share/doc/apache2-doc/examples/apache2/extra/httpd-info.conf
/etc/apache2/httpd.conf
/etc/apache2/httpd.pem

root@...:~# whereis httpd
httpd:

root@...:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 12.04.5 LTS
Release:        12.04
Codename:       precise

root@...:~# ls /etc/init.d
README             hostname           network-interface-container  plymouth-upstart-bridge  rc              spamassassin            udevtrigger
apache2            hwclock            network-interface-security   portmap                  rc.local        ssh                     umountfs
bind9              hwclock-save       networking                   portmap-wait             rcS             stop-bootlogd           umountnfs.sh
bluetooth          keymap.sh          ondemand                     postfix                  reboot          stop-bootlogd-single    umountroot
bootlogd           killprocs          passwd                       procps                   rpcbind-boot    sudo                    unattended-upgrades
console-screen.sh  klogd              pc-remote                    psa                      rsync           sw-cp-server            urandom
courier-imap       module-init-tools  plymouth                     psa-firewall             saslauthd       sysklogd                wide-dhcpv6-client
cron               modules_dep.sh     plymouth-log                 psa-firewall-forward     screen-cleanup  udev                    x11-common
dbus               mongodb            plymouth-ready               psa-spamassassin         sendsigs        udev-fallback-graphics  xinetd
fetchmail          mysql              plymouth-splash              quota                    single          udev-finish
halt               network-interface  plymouth-stop                quotarpc                 skeleton        udevmonitor

root@...:~# ls /etc/xinetd.d
chargen  daytime  discard  echo  ftp_psa  poppassd_psa  time

如果您使用命令“lsof”並查找“http”，您可以輕鬆查看您的 Apache 網站程序是否確實在 Ubuntu 上執行。就我而言：

sudo lsof | grep ':http '

我看到了

apache2    2202                 root    4u     IPv6              15516      0t0        TCP *:http (LISTEN)
apache2   22949             www-data    4u     IPv6              15516      0t0        TCP *:http (LISTEN)
apache2   22950             www-data    4u     IPv6              15516      0t0        TCP *:http (LISTEN)
apache2   22951             www-data    4u     IPv6              15516      0t0        TCP *:http (LISTEN)
apache2   22952             www-data    4u     IPv6              15516      0t0        TCP *:http (LISTEN)
apache2   22953             www-data    4u     IPv6              15516      0t0        TCP *:http (LISTEN)

從而確認 Unbuntu 中的程序確實被命名為“apache2”而不是 httpd。

引用自：https://unix.stackexchange.com/questions/190858