Linux operating system How to solve the "/boot" partition is full

Production server:

Os:centos 6.8

Task: Yum upgrade #升级软件包, but does not change the software and system configuration and does not upgrade the kernel.

Problem:

Run Rpm_check_debug

Performing a transaction test

Transaction Test Error:

Installing package kernel-2.6.32-642.11.1.el6.x86_64 needs 15MB on the/boot filesystem

Error condition

-------------

Disk Requirements:

At least 15MB + space needed on the/boot filesystem.

[Email protected]/]# df-h

Filesystem Size used Avail use% mounted on

/dev/sda2 49G 22G 25G 48%/

Tmpfs 939M 44K 939M 1%/DEV/SHM

/DEV/SDA1 93M 75M 14M 85%/boot

/dev/sda5 179G 1.8G 168G 2%/Home

Workaround: Delete the old version of the Kernel

[Email protected]/]# Rpm-qa|grep kernel

Dracut-kernel-004-409.el6_8.2.noarch

Kernel-2.6.32-504.1.3.el6.x86_64

Kernel-firmware-2.6.32-642.el6.noarch

Kernel-devel-2.6.32-573.12.1.el6.x86_64

Kernel-2.6.32-573.12.1.el6.x86_64

Kernel-2.6.32-642.el6.x86_64

Kernel-devel-2.6.32-642.el6.x86_64

Kernel-headers-2.6.32-642.el6.x86_64

[email protected]/]# Yum remove kernel-2.6.32-504.1.3.el6.x86_64 kernel-devel-2.6.32-573.12.1.el6.x86_64 kernel-2.6.32-573.12.1.el6.x86_64 kernel-devel-2.6.32-642.el6.x86_64 kernel-headers-2.6.32-642.el6.x86_64

............

Delete Complete!

[Email protected]/]# df-h

Filesystem Size used Avail use% mounted on

/dev/sda2 49G 22G 25G 47%/

Tmpfs 939M 44K 939M 1%/DEV/SHM

/DEV/SDA1 93M 28M 61M 32%/boot #可用空间61M

/dev/sda5 179G 1.8G 168G 2%/Home

[email protected]/]# Yum upgrade #升级软件包

[Email protected]/]# df-h

Filesystem Size used Avail use% mounted on

/dev/sda2 49G 22G 25G 47%/

Tmpfs 939M 44K 939M 1%/DEV/SHM

/DEV/SDA1 93M 54M 35M 61%/boot #升级软件包之后, free space available only 35M

/dev/sda5 179G 1.8G 168G 2%/Home

Linux operating system How to solve the "/boot" partition is full