LoginSignup
5
4

More than 5 years have passed since last update.

yumでよく使うplugin3つ(CentOS7.2)

Last updated at Posted at 2016-02-01

背景

  • yumを使うとき便利なpluginがあって、よく使う
  • 新しいyumになると、標準でpluginを搭載していたものもあったのでまとめた

環境


Tips

  • yum-plugin-security ... セキュリティアップデート対象の検出
  • yum-plugin-downloadonly ... パッケージをインストールせずダウンロードだけ実施
  • yum-plugin-changelog ... アップデートパッケージの更新履歴の参照

yum-plugin-security

  • 昔は、yum -y install yum-plugin-security だが今は標準装備
[vagrant@test001 ~]$ sudo yum -d0 install yum-plugin-security
Package yum-3.4.3-132.el7.centos.0.1.noarch already installed and latest version

command

[vagrant@test001 ~]$ sudo yum help | grep "\-\-security"
  --security            Include security relevant packages, in updates
[vagrant@test001 ~]$ sudo yum -d1 --security check-update | head -3
 --> dracut-config-rescue-033-360.el7_2.x86_64 from updates excluded (updateinfo)
 --> rdma-7.2_4.1_rc6-2.el7.noarch from updates excluded (updateinfo)
 --> 32:bind-license-9.9.4-29.el7_2.2.noarch from updates excluded (updateinfo)

アップデート対象をセキュリティアップデートが必要な物にしぼられるので便利

yum-plugin-downloadonly

  • 昔は、yum -y install yum-plugin-downloadonly だが今は標準装備
[vagrant@test001 ~]$ sudo yum -d0 install yum-plugin-downloadonly
Package yum-3.4.3-132.el7.centos.0.1.noarch already installed and latest version

command

  • 試しに psmisc を入れてみる
[vagrant@test001 ~]$ sudo yum -d0 install --downloadonly --downloaddir=/tmp psmisc

========================================================================================================================================
 Package                        Arch                           Version                               Repository                    Size
========================================================================================================================================
Installing:
 psmisc                         x86_64                         22.20-9.el7                           base                         140 k

Transaction Summary
========================================================================================================================================
Install  1 Package

exiting because "Download Only" specified
[vagrant@test001 ~]$ ls  /tmp/psmisc-22.20-9.el7.x86_64.rpm
/tmp/psmisc-22.20-9.el7.x86_64.rpm

downloadaされる。しかし、すでにインストールされていると反応しない。

[vagrant@test001 ~]$ sudo yum -d0 install --downloadonly --downloaddir=/tmp psmisc
Package psmisc-22.20-9.el7.x86_64 already installed and latest version

とにかくダウンロードをしたい場合は、 yumdownloader を入れるとよい。
yum install yum-utils

yum-plugin-changelog

  • こちらは標準で入っていない
    • sudo yum -y install yum-plugin-changelog

command

[vagrant@test001 ~]$ sudo yum help | grep "\-\-changelog"
    --changelog         Show changelog delta of updated packages
[vagrant@test001 ~]$ sudo yum --changelog update openssl
Loaded plugins: changelog, fastestmirror
Loading mirror speeds from cached hostfile
 * base: www.ftp.ne.jp
 * epel: mirrors.hustunique.com
 * extras: www.ftp.ne.jp
 * updates: www.ftp.ne.jp
Resolving Dependencies
--> Running transaction check
---> Package openssl.x86_64 1:1.0.1e-42.el7.9 will be updated
---> Package openssl.x86_64 1:1.0.1e-51.el7_2.2 will be an update
--> Processing Dependency: openssl-libs(x86-64) = 1:1.0.1e-51.el7_2.2 for package: 1:openssl-1.0.1e-51.el7_2.2.x86_64
--> Running transaction check
---> Package openssl-libs.x86_64 1:1.0.1e-42.el7.9 will be updated
---> Package openssl-libs.x86_64 1:1.0.1e-51.el7_2.2 will be an update
--> Finished Dependency Resolution

Changes in packages about to be updated:

ChangeLog for: 1:openssl-1.0.1e-51.el7_2.2.x86_64, 1:openssl-libs-1.0.1e-51.el7_2.2.x86_64
* Mon Dec 21 12:00:00 2015 Tomáš Mráz <tmraz@redhat.com> 1.0.1e-51.2
- fix CVE-2015-7575 - disallow use of MD5 in TLS1.2

* Fri Dec  4 12:00:00 2015 Tomáš Mráz <tmraz@redhat.com> 1.0.1e-51.1
- fix CVE-2015-3194 - certificate verify crash with missing PSS parameter
- fix CVE-2015-3195 - X509_ATTRIBUTE memory leak
- fix CVE-2015-3196 - race condition when handling PSK identity hint

インストール対象のパッケージの履歴を見ることができるので確認して入れることができて便利。

細かい設定は一応プラグイン管理フォルダでenableを確認するとよい。

[vagrant@test001 ~]$ cat /etc/yum/pluginconf.d/changelog.conf
[main]
enabled=1

# Set to 'pre' or 'post' to see changes before or after transaction
when=pre
# Set to true, to always get the output (removes the cmd line arg)
always=false

参考

5
4
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
5
4