為什麼我的 Apache 伺服器沒有在我重新啟動伺服器後自動啟動？

我正在使用亞馬遜 Linux。我只是通過 yum 執行 Apache，但是，當我重新啟動伺服器時，我無法讓它自動啟動，儘管它是在命令行上啟動的……

[myuser@mymachine ~]$ sudo service httpd start
[sudo] password for myuser:
Starting httpd: httpd: apr_sockaddr_info_get() failed for mymachine
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
                                                          [  OK  ]
[myuser@mymachine ~]$ telnet localhost 80
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.

我在下面設置了這些連結，具有以下權限。安裝時自動為我創建了配置文件…

[myuser@mymachine ~]$ ls -al /etc/init.d/httpd
-rwxr-xr-x 1 root root 3371 Sep 15 20:58 /etc/init.d/httpd


[myuser@mymachine ~]$ ls -al /etc/rc3.d/*httpd*
lrwxrwxrwx 1 root root 15 Oct 18 22:03 /etc/rc3.d/K15httpd -> ../init.d/httpd


[myuser@mymachine ~]$ cat /etc/init.d/httpd
#!/bin/bash
#
# httpd        Startup script for the Apache HTTP Server
#
# chkconfig: - 85 15
# description: The Apache HTTP Server is an efficient and extensible  \
#          server implementing the current HTTP standards.
# processname: httpd
# config: /etc/httpd/conf/httpd.conf
# config: /etc/sysconfig/httpd
# pidfile: /var/run/httpd/httpd.pid
#
### BEGIN INIT INFO
# Provides: httpd
# Required-Start: $local_fs $remote_fs $network $named
# Required-Stop: $local_fs $remote_fs $network
# Should-Start: distcache
# Short-Description: start and stop Apache HTTP Server
# Description: The Apache HTTP Server is an extensible server
#  implementing the current HTTP standards.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

if [ -f /etc/sysconfig/httpd ]; then
       . /etc/sysconfig/httpd
fi

# Start httpd in the C locale by default.
HTTPD_LANG=${HTTPD_LANG-"C"}

# This will prevent initlog from swallowing up a pass-phrase prompt if
# mod_ssl needs a pass-phrase from the user.
INITLOG_ARGS=""

# Set HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd to use a server
# with the thread-based "worker" MPM; BE WARNED that some modules may not
# work correctly with a thread-based MPM; notably PHP will refuse to start.

# Path to the apachectl script, server binary, and short-form for messages.
apachectl=/usr/sbin/apachectl
httpd=${HTTPD-/usr/sbin/httpd}
prog=httpd
pidfile=${PIDFILE-/var/run/httpd/httpd.pid}
lockfile=${LOCKFILE-/var/lock/subsys/httpd}
RETVAL=0
STOP_TIMEOUT=${STOP_TIMEOUT-10}

# The semantics of these two functions differ from the way apachectl does
# things -- attempting to start while running is a failure, and shutdown
# when not running is also a failure.  So we just do it the way init scripts
# are expected to behave here.
start() {
       echo -n $"Starting $prog: "
       LANG=$HTTPD_LANG daemon --pidfile=${pidfile} $httpd $OPTIONS
       RETVAL=$?
       echo
       [ $RETVAL = 0 ] && touch ${lockfile}
       return $RETVAL
}

# When stopping httpd, a delay (of default 10 second) is required
# before SIGKILLing the httpd parent; this gives enough time for the
# httpd parent to SIGKILL any errant children.
stop() {
   echo -n $"Stopping $prog: "
   killproc -p ${pidfile} -d ${STOP_TIMEOUT} $httpd
   RETVAL=$?
   echo
   [ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}
reload() {
   echo -n $"Reloading $prog: "
   if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then
       RETVAL=6
       echo $"not reloading due to configuration syntax error"
       failure $"not reloading $httpd due to configuration syntax error"
   else
       # Force LSB behaviour from killproc
       LSB=1 killproc -p ${pidfile} $httpd -HUP
       RETVAL=$?
       if [ $RETVAL -eq 7 ]; then
           failure $"httpd shutdown"
       fi
   fi
   echo
}

# See how we were called.
case "$1" in
 start)
   start
   ;;
 stop)
   stop
   ;;
 status)
       status -p ${pidfile} $httpd
   RETVAL=$?
   ;;
 restart)
   stop
   start
   ;;
 condrestart|try-restart)
   if status -p ${pidfile} $httpd >&/dev/null; then
       stop
       start
   fi
   ;;
 force-reload|reload)
       reload
   ;;
 graceful|help|configtest|fullstatus)
   $apachectl $@
   RETVAL=$?
   ;;
 *)
   echo $"Usage: $prog {start|stop|restart|condrestart|try-restart|force-reload|reload|status|fullstatus|graceful|help|configtest}"
   RETVAL=2
esac

exit $RETVAL

然而，在伺服器重新啟動後，事情並沒有執行（我無法通過埠 80 在 Telnet 上連接）。我還需要做什麼才能在重新啟動時啟動它？

[myuser@mymachine ~]$ ls -al /etc/rc3.d/*httpd*
lrwxrwxrwx 1 root root 15 Oct 18 22:03 /etc/rc3.d/K15httpd -> ../init.d/httpd

那是你的問題。/etc/rc3.d 中以 K 開頭的腳本（代表 kill）不會在引導時啟動，以 S 開頭的腳本會。

如果你這樣做：

[myuser@mymachine ~]$ mv /etc/rc3.d/K15httpd /etc/rc3.d/S15httpd

你的問題將得到解決。但是，這是手動操作。最好的方法是像這樣使用 chkconfig 命令：

[myuser@mymachine ~]$ chkconfig httpd on

引用自：https://unix.stackexchange.com/questions/399125