centos7单用户模式&bond

Centos 7 与 Centos 6有很大区别。单用户模式也有所不同

1、开机启动，在grub菜单时按e,进入grub菜单，找到linuxl6 /vmlinuz-3.10行，最后加上init=/bin/sh

2、从新挂载根分区，并设置读写

# mount -o remount,rw /

3、编写pass密码脚本，其中123456为密码

# cat pass.sh

#/bin/sh

LANG=C

passwd << EOF

123456

123456

EOF

# chmod +x pass.sh

#./pass.sh

4、#touch /.autorelabel 如果系统关闭了selinux可不执行这步

5、#exec /sbin/init

双网卡绑定

[monitor@docker37 ~]$ cat /etc/rc.local

#!/bin/bash

# THIS FILE IS ADDED FOR COMPATIBILITY PURPOSES

#

# It is highly advisable to create own systemd services or udev rules

# to run scripts during boot instead of using this file.

#

# In contrast to previous versions due to parallel execution during boot

# this script will NOT be run after all other services.

#

# Please note that you must run 'chmod +x /etc/rc.d/rc.local' to ensure

# that this script will be executed during boot.

touch /var/lock/subsys/local

/usr/src/OM/linux/supportscripts/srvadmin-services.sh start

modprobe bonding &> /dev/null

echo +bond0 > /sys/class/net/bonding_masters

ifconfig em1 down

echo +em1 > /sys/class/net/bond0/bonding/slaves

ifconfig em1 up

ifconfig em2 down

echo +em2 > /sys/class/net/bond0/bonding/slaves

ifconfig em2 up

ifconfig bond0 up

[monitor@docker37 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0

BONDING_OPTS="miimon=100 updelay=0 downdelay=0 xmit_hash_policy=layer3+4 mode=802.3ad"

TYPE=Bond

BONDING_MASTER=yes

BOOTPROTO=none

NAME=bond0

ONBOOT=yes

BRIDGE=bridge0

~

[monitor@docker37 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-em1

DEVICE=em1

ONBOOT=yes

BOOTPROTO=none

[monitor@docker37 ~]$ cat /etc/sysconfig/network-scripts/ifcfg-em2

DEVICE=em2

ONBOOT=yes

BOOTPROTO=none