一、重要的开机服务 1、sshd 2、rsyslog收集清理管理相关的日志 3、network 4、crond 定时任务 相当于闹钟 5、sysstat 软件集成包 方法一： [root@webserver02 ~]#for i in $(chkconfig --list | awk '{print $1}');do chkconfig --level 3 $i off;done [root@webserver02 ~]# chkconfig --list 查看是否全部被关闭。 [root@webserver02 ~]# for i in crond sshd network rsyslog sysstat;do chkconfig --level 3 $i on;done 使用for循环开启其中crond sshd network rsyslog sysstat 这几个服务 [root@webserver02 ~]# chkconfig --list | grep 3:on crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off rsyslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off sysstat 0:off 1:on 2:on 3:on 4:on 5:on 6:off 方法二 [root@webserver02 ~]# chkconfig --list | grep 3:on|egrep -v "crond|sshd|network|rsyslog|sysstat"| awk '{print "chkconfig",$1,"off"}' chkconfig abrt-ccpp off chkconfig abrtd off chkconfig acpid off chkconfig atd off chkconfig auditd off chkconfig autofs off chkconfig blk-availability off chkconfig certmonger off chkconfig cgconfig off chkconfig cgred off chkconfig cpuspeed off chkconfig cups off chkconfig haldaemon off chkconfig ip6tables off chkconfig iptables off chkconfig irqbalance off chkconfig kdump off chkconfig lvm2-monitor off chkconfig mcelogd off chkconfig mdmonitor off chkconfig messagebus off chkconfig netconsole off chkconfig netfs off chkconfig nfs off chkconfig nfslock off chkconfig ntpd off chkconfig ntpdate off chkconfig numad off chkconfig oddjobd off chkconfig portreserve off chkconfig postfix off chkconfig psacct off chkconfig quota_nld off chkconfig rdisc off chkconfig restorecond off chkconfig rhnsd off chkconfig rhsmcertd off chkconfig rngd off chkconfig rpcbind off chkconfig rpcgssd off chkconfig rpcidmapd off chkconfig rpcsvcgssd off chkconfig saslauthd off chkconfig smartd off chkconfig sssd off chkconfig udev-post off chkconfig winbind off chkconfig ypbind off [root@webserver02 ~]# chkconfig --list | grep 3:on|egrep -v "crond|sshd|network|rsyslog|sysstat"| awk '{print "chkconfig",$1,"off"}'|bash [root@webserver02 ~]# chkconfig --list |grep 3:on crond 0:off 1:off 2:on 3:on 4:on 5:on 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off rsyslog 0:off 1:off 2:on 3:on 4:on 5:on 6:off sshd 0:off 1:off 2:on 3:on 4:on 5:on 6:off sysstat 0:off 1:on 2:on 3:on 4:on 5:on 6:off