解决Ubuntu下提示boot分区空间不足的办法-zabbix

解决Ubuntu 16.04下提示boot分区空间不足的办法

[BEGIN] 2018/3/7 15:51:43
Last login: Wed Mar  7 05:06:17 2018 from 10.2.202.39

########    ###    ########  ########  #### ##     ##
##    ## ##   ##     ## ##     ##  ##   ##   ##
##    ##   ##  ##     ## ##     ##  ##    ## ##
##    ##     ## ########  ########   ##     ###
##     ######### ##     ## ##     ##  ##    ## ##
##      ##     ## ##     ## ##     ##  ##   ##   ##
######## ##     ## ########  ########  #### ##     ##
#解决办法
#将不用的内核文件删除，释放空间
#一、查看已安装的内核dpkg --get-selections |grep linux-image
#后面带deinstall的为已删除的内核，可以忽略
root@zabbix:~# dpkg --get-selections |grep linux-image
linux-image-4.4.0-101-generic			install
linux-image-4.4.0-103-generic			install
linux-image-4.4.0-104-generic			install
linux-image-4.4.0-108-generic			install
linux-image-4.4.0-109-generic			install
linux-image-4.4.0-112-generic			install
linux-image-4.4.0-116-generic			install
linux-image-4.4.0-87-generic			deinstall
linux-image-4.4.0-96-generic			install
linux-image-4.4.0-97-generic			install
linux-image-4.4.0-98-generic			install
linux-image-extra-4.4.0-101-generic		install
linux-image-extra-4.4.0-103-generic		install
linux-image-extra-4.4.0-104-generic		install
linux-image-extra-4.4.0-108-generic		install
linux-image-extra-4.4.0-109-generic		install
linux-image-extra-4.4.0-112-generic		install
linux-image-extra-4.4.0-116-generic		install
linux-image-extra-4.4.0-87-generic		deinstall
linux-image-extra-4.4.0-96-generic		install
linux-image-extra-4.4.0-97-generic		install
linux-image-extra-4.4.0-98-generic		install
linux-image-generic				install
#二、使用uname -a查看自己当前启动的是哪个内核
root@zabbix:~# uname -a
Linux zabbix 4.4.0-97-generic #120-Ubuntu SMP Tue Sep 19 17:28:18 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
#从输出可知我们当前启动的内核是4.4.0-97-generic
#三、运行apt-get remove命令卸载其他内核，为了保险起见，保留最近的一两个版本。
#如提示有未卸载干净的可以执行sudo apt-get remove来卸载。
root@zabbix:~# apt-get remove linux-image-4.4.0-116-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-101-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-103-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-104-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-108-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-109-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-112-generic
root@zabbix:~# apt-get remove linux-image-4.4.0-116-generic
root@zabbix:~# dpkg --get-selections |grep linux-image
linux-image-4.4.0-101-generic			deinstall
linux-image-4.4.0-103-generic			deinstall
linux-image-4.4.0-104-generic			deinstall
linux-image-4.4.0-108-generic			deinstall
linux-image-4.4.0-109-generic			deinstall
linux-image-4.4.0-112-generic			deinstall
linux-image-4.4.0-116-generic			deinstall
linux-image-4.4.0-87-generic			deinstall
linux-image-4.4.0-96-generic			install
linux-image-4.4.0-97-generic			install
linux-image-4.4.0-98-generic			install
linux-image-extra-4.4.0-101-generic		deinstall
linux-image-extra-4.4.0-103-generic		deinstall
linux-image-extra-4.4.0-104-generic		deinstall
linux-image-extra-4.4.0-108-generic		deinstall
linux-image-extra-4.4.0-109-generic		deinstall
linux-image-extra-4.4.0-112-generic		deinstall
linux-image-extra-4.4.0-116-generic		deinstall
linux-image-extra-4.4.0-87-generic		deinstall
linux-image-extra-4.4.0-96-generic		install
linux-image-extra-4.4.0-97-generic		install
linux-image-extra-4.4.0-98-generic		install
#删除完检查一下boot空间已经出来了
root@zabbix:~# df -l
Filesystem                  1K-blocks     Used Available Use% Mounted on
udev                          8195228        0   8195228   0% /dev
tmpfs                         1643256    95080   1548176   6% /run
/dev/mapper/zabbix--vg-root 203528040 68262368 126905900  35% /
tmpfs                         8216268        0   8216268   0% /dev/shm
tmpfs                            5120        0      5120   0% /run/lock
tmpfs                         8216268        0   8216268   0% /sys/fs/cgroup
/dev/sda1                      482922   184420    273568  41% /boot