2、禁用IPV6
[root@vdevops ~]# vim /etc/default/grub
#第六行，添加
GRUB_CMDLINE_LINUX="crashkernel=auto ipv6.disable=1 rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"
[root@vdevops ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-327.36.2.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.36.2.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-d1b9467b8b744a3db391f2c15fe58a94
Found initrd image: /boot/initramfs-0-rescue-d1b9467b8b744a3db391f2c15fe58a94.img
done
[root@vdevops ~]# reboot #重启系统
3、如果要将网络接口名称用作ethX，请按如下所示进行配置 。
[root@vdevops ~]# vim /etc/default/grub
#第六行添加
GRUB_CMDLINE_LINUX="crashkernel=auto ipv6.disable=1 net.ifnames=0 rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet
[root@vdevops ~]# grub2-mkconfig -o /boot/grub2/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-327.36.2.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.36.2.el7.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-327.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-327.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-d1b9467b8b744a3db391f2c15fe58a94
Found initrd image: /boot/initramfs-0-rescue-d1b9467b8b744a3db391f2c15fe58a94.img
done
【5】服务设置
1、查看服务状态
# 显示正在运行的服务
[root@vdevops ~]# systemctl -t service
UNIT LOAD ACTIVE SUB DESCRIPTION
auditd.service loaded active running Security Auditing Service
avahi-daemon.service loaded active running Avahi mDNS/DNS-SD Stack
crond.service loaded active running Command Scheduler
dbus.service loaded active running D-Bus System Message Bus
getty@tty1.service loaded active running Getty on tty1
...
...
...
systemd-udevd.service loaded active running udev Kernel Device Manager
systemd-update-utmp.service loaded active exited Update UTMP about System Reboot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
systemd-vconsole-setup.service loaded active exited Setup Virtual Console
tuned.service loaded active running Dynamic System Tuning Daemon
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
39 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
# 显示所有服务
[root@vdevops ~]# systemctl list-unit-files -t service
UNIT FILE STATE
auditd.service enabled
autovt@.service disabled
avahi-daemon.service enabled
blk-availability.service disabled
brandbot.service static
...
...
...
systemd-user-sessions.service static
systemd-vconsole-setup.service static
teamd@.service static
tuned.service enabled
wpa_supplicant.service disabled
125 unit files listed.
2、设置停止启动自动的服务
[root@vdevops ~]# systemctl stop postfix #停止服务
[root@vdevops ~]# systemctl disable postfix
Removed symlink /etc/systemd/system/multi-user.target.wants/postfix.service.
[root@vdevops ~]# systemctl start postfix
[root@vdevops ~]# systemctl enable postfix
Created symlink from /etc/systemd/system/multi-user.target.wants/postfix.service to /usr/lib/systemd/system/postfix.service.
[root@vdevops ~]# systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2016-10-26 18:40:35 CST; 15s ago
Main PID: 10071 (master)
CGroup: /system.slice/postfix.service
├─10071 /usr/libexec/postfix/master -w
├─10072 pickup -l -t unix -u
└─10073 qmgr -l -t unix -u
Oct 26 18:40:35 vdevops.com postfix[9999]: /usr/sbin/postconf: warning: inet_protocols: disabling IPv6 name/address support: Address ...rotocol
Oct 26 18:40:35 vdevops.com postfix[9999]: /usr/sbin/postconf: warning: inet_protocols: disabling IPv6 name/address support: Address ...rotocol
Oct 26 18:40:35 vdevops.com postfix[9999]: postsuper: warning: inet_protocols: disabling IPv6 name/address support: Address family no...rotocol
Oct 26 18:40:35 vdevops.com postfix[9999]: /usr/sbin/postconf: warning: inet_protocols: disabling IPv6 name/address support: Address ...rotocol
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