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CentOS7で、/bootの容量が足りない場合の対処方法†
カーネルのアップグレードを何度も繰り返していると、バックアップファイルが貯まり、
知らず知らずのうちに/bootが容量不足になります。
その場合は、yum-utilsを使うと比較的安全に古いカーネルを削除できます。
まずは、yum-utilsをインストール!!
yum install yum-utils†
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
base | 3.6 kB 00:00:00
centosplus | 3.4 kB 00:00:00
epel/x86_64/metalink | 5.4 kB 00:00:00
epel | 4.3 kB 00:00:00
extras | 3.4 kB 00:00:00
updates | 3.4 kB 00:00:00
(1/4): extras/7/x86_64/primary_db | 98 kB 00:00:00
(2/4): updates/7/x86_64/primary_db | 1.3 MB 00:00:00
(3/4): epel/x86_64/updateinfo | 721 kB 00:00:01
(4/4): epel/x86_64/primary_db | 4.5 MB 00:00:02
Determining fastest mirrors
* base: mirror.fairway.ne.jp
* centosplus: mirror.fairway.ne.jp
* epel: ftp.jaist.ac.jp
* extras: ftp.yz.yamagata-u.ac.jp
* updates: ftp.yz.yamagata-u.ac.jp
Resolving Dependencies
--> Running transaction check
---> Package yum-utils.noarch 0:1.1.31-40.el7 will be installed
--> Processing Dependency: python-kitchen for package: yum-utils-1.1.31-40.el7.noarch
--> Processing Dependency: libxml2-python for package: yum-utils-1.1.31-40.el7.noarch
--> Running transaction check
---> Package libxml2-python.x86_64 0:2.9.1-6.el7_2.3 will be installed
---> Package python-kitchen.noarch 0:1.1.1-5.el7 will be installed
--> Processing Dependency: python-chardet for package: python-kitchen-1.1.1-5.el7.noarch
--> Running transaction check
---> Package python-chardet.noarch 0:2.2.1-1.el7_1 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==========================================================================================================================================================================================================
Package Arch Version Repository Size
==========================================================================================================================================================================================================
Installing:
yum-utils noarch 1.1.31-40.el7 base 116 k
Installing for dependencies:
libxml2-python x86_64 2.9.1-6.el7_2.3 base 247 k
python-chardet noarch 2.2.1-1.el7_1 base 227 k
python-kitchen noarch 1.1.1-5.el7 base 267 k
Transaction Summary
==========================================================================================================================================================================================================
Install 1 Package (+3 Dependent packages)
Total download size: 856 k
Installed size: 4.3 M
Is this ok [y/d/N]: y
Downloading packages:
(1/4): libxml2-python-2.9.1-6.el7_2.3.x86_64.rpm | 247 kB 00:00:00
(2/4): python-chardet-2.2.1-1.el7_1.noarch.rpm | 227 kB 00:00:00
(3/4): python-kitchen-1.1.1-5.el7.noarch.rpm | 267 kB 00:00:00
(4/4): yum-utils-1.1.31-40.el7.noarch.rpm | 116 kB 00:00:09
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 87 kB/s | 856 kB 00:00:09
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : python-chardet-2.2.1-1.el7_1.noarch 1/4
Installing : python-kitchen-1.1.1-5.el7.noarch 2/4
Installing : libxml2-python-2.9.1-6.el7_2.3.x86_64 3/4
Installing : yum-utils-1.1.31-40.el7.noarch 4/4
Verifying : yum-utils-1.1.31-40.el7.noarch 1/4
Verifying : python-kitchen-1.1.1-5.el7.noarch 2/4
Verifying : libxml2-python-2.9.1-6.el7_2.3.x86_64 3/4
Verifying : python-chardet-2.2.1-1.el7_1.noarch 4/4
Installed:
yum-utils.noarch 0:1.1.31-40.el7
Dependency Installed:
libxml2-python.x86_64 0:2.9.1-6.el7_2.3 python-chardet.noarch 0:2.2.1-1.el7_1 python-kitchen.noarch 0:1.1.1-5.el7
Complete!
インストールが完了したので、次に、削除工程†
最新のカーネルを3つだけ残して残りを削除。
package-cleanup --oldkernels --count=3コマンドを実行!!
[root@localhost boot]# package-cleanup --oldkernels --count=3
Loaded plugins: fastestmirror
--> Running transaction check
---> Package kernel.x86_64 0:3.10.0-327.13.1.el7 will be erased
---> Package kernel.x86_64 0:3.10.0-327.18.2.el7 will be erased
--> Finished Dependency Resolution
Dependencies Resolved
==========================================================================================================================================================================================================
Package Arch Version Repository Size
==========================================================================================================================================================================================================
Removing:
kernel x86_64 3.10.0-327.13.1.el7 @updates 136 M
kernel x86_64 3.10.0-327.18.2.el7 @updates 136 M
Transaction Summary
==========================================================================================================================================================================================================
Remove 2 Packages
Installed size: 272 M
Is this ok [y/N]: y ←「y」を入力。
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Erasing : kernel.x86_64 1/2
Erasing : kernel.x86_64 2/2
Verifying : kernel-3.10.0-327.13.1.el7.x86_64 1/2
Verifying : kernel-3.10.0-327.18.2.el7.x86_64 2/2
Removed:
kernel.x86_64 0:3.10.0-327.13.1.el7 kernel.x86_64 0:3.10.0-327.18.2.el7
Complete!
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