CentOS 6.5から7へアップグレード
Pocket

昨日、CentOS 7のインストールをしてみたので、今回は既存のCentOS 6.5をCentOS 7にアップグレードしてみることにした。
どうやら、CentOS 6.5から7へのアップグレードは正式にサポートされるようになったらしい。

アップグレードには、以下のパッケージが必要なようだ。

  • preupgrade-assistant
  • preupgrade-assistant-contents
  • preupgrade-assistant-ui
  • python-rhsm
  • redhat-upgrade-tool

これらのパッケージは、こちらのページから取得できるようだ。
それではアップグレードを始めてみよう。

1.現在のバージョン確認

まずは、現在のCentOSのバージョンを確認する。バージョンは、CentOS 6.5である必要がある。6.4だとダメらしいので注意。

20140709_000000

2.アップデートの適用

アップグレードを行う前に、CentOS 6.5のアップデート適用を行う。
以下のコマンドを実行し再起動する。

yum -y update
reboot
Sponsored Links

3.アップグレード用のパッケージを取得

アップグレードを行うためのパッケージ(preupg等)を取得する。
まずは、依存関係の有るライブラリ等をインストールする。

yum -y install openscap pcre-devel libxml2-devel libxslt-devel
yum -y install m2crypto python-simplejson

上記インストール後、アップグレード用パッケージをインストールする。

rpm -ihv http://dev.centos.org/centos/6/upg/x86_64/Packages/preupgrade-assistant-1.0.2-33.el6.x86_64.rpm
rpm -ihv http://dev.centos.org/centos/6/upg/x86_64/Packages/preupgrade-assistant-contents-0.5.13-1.el6.noarch.rpm
rpm -ihv http://dev.centos.org/centos/6/upg/x86_64/Packages/preupgrade-assistant-ui-1.0.2-33.el6.x86_64.rpm
rpm -ihv http://dev.centos.org/centos/6/upg/x86_64/Packages/python-rhsm-1.9.7-1.el6.x86_64.rpm
rpm -ihv http://dev.centos.org/centos/6/upg/x86_64/Packages/redhat-upgrade-tool-0.7.22-1.el6.noarch.rpm

4.アップグレードコマンドの実行

さて、必要なパッケージは全て揃ったようなので、実際にアップグレードコマンドを実行する。
アップグレードは、以下のコマンドで行う。

preupg -s RHEL6_7

実行すると、本当にアップグレードしていいか確認されるので、「y」を入力する。

[root@localhost ~]# preupg -s RHEL6_7
Preupg tool doesn't do the actual upgrade.
Please ensure you have backed up your system and/or data in the event of a failed upgrade
that would require a full re-install of the system from installation media.
Do you want to continue? y/n

20140709_000001

実際に実行した結果がこちら。

[root@localhost ~]# preupg -s RHEL6_7
Preupg tool doesn't do the actual upgrade.
Please ensure you have backed up your system and/or data in the event of a failed upgrade
 that would require a full re-install of the system from installation media.
Do you want to continue? y/n
y
Gathering logs used by preupgrade assistant:
All installed packages : 01/10 ...finished (time 00:01s)
All changed files      : 02/10 ...finished (time 05:19s)
Changed config files   : 03/10 ...finished (time 00:00s)
All users              : 04/10 ...finished (time 00:00s)
All groups             : 05/10 ...finished (time 00:00s)
Service statuses       : 06/10 ...finished (time 00:01s)
All installed files    : 07/10 ...finished (time 00:05s)
All local files        : 08/10 ...finished (time 00:26s)
All executable files   : 09/10 ...finished (time 00:01s)
RedHat signed packages : 10/10 ...finished (time 00:00s)
Assessment of the system, running checks / SCE scripts:
001/100 ...done    (Configuration Files to Review)
002/100 ...done    (File Lists for Manual Migration)
003/100 ...done    (Bacula Backup Software)
004/100 ...done    (MySQL configuration)
005/100 ...done    (Migration of the MySQL data stack)
006/100 ...done    (General changes in default MySQL implementation)
007/100 ...done    (PostgreSQL upgrade content)
008/100 ...done    (GNOME Desktop Environment underwent several design modifications in Red Hat Enterprise Linux 7 release)
009/100 ...done    (KDE Desktop Environment underwent several design modifications in Red Hat Enterprise Linux 7 release)
010/100 ...done    (several graphic drivers not supported in Red Hat Enterprise Linux 7)
011/100 ...done    (several input drivers not supported in Red Hat Enterprise Linux 7)
012/100 ...done    (several kernel networking drivers not available in Red Hat Enterprise Linux 7)
013/100 ...done    (several kernel storage drivers not available in Red Hat Enterprise Linux 7)
014/100 ...done    (Names, Options and Output Format Changes in arptables)
015/100 ...done    (BIND9 running in a chroot environment check.)
016/100 ...done    (BIND9 configuration compatibility check)
017/100 ...done    (Move dhcpd/dhcprelay arguments from /etc/sysconfig/* to *.service files)
018/100 ...done    (DNSMASQ configuration compatibility check)
019/100 ...done    (Dovecot configuration compatibility check)
020/100 ...done    (Compatibility Between iptables and ip6tables)
021/100 ...done    (Net-SNMP check)
022/100 ...done    (Squid configuration compatibility check)
023/100 ...done    (Reusable Configuration Files)
024/100 ...done    (VCS repositories)
025/100 ...done    (Added and extended options for BIND9 configuration)
026/100 ...done    (Added options in DNSMASQ configuration)
027/100 ...done    (Packages not signed by Red Hat)
028/100 ...done    (Obsoleted rpms)
029/100 ...done    (w3m not available in Red Hat Enterprise Linux 7)
030/100 ...done    (report incompatibilities between Red Hat Enterprise Linux 6 and 7 in qemu-guest-agent package)
031/100 ...done    (Removed options in coreutils binaries)
032/100 ...done    (Removed options in gawk binaries)
033/100 ...done    (Removed options in netstat binary)
034/100 ...done    (Removed options in quota tools)
035/100 ...done    (Removed rpms)
036/100 ...done    (Replaced rpms)
037/100 ...done    (GMP library incompatibilities)
038/100 ...done    (optional channel problems)
039/100 ...done    (package downgrades)
040/100 ...done    (restore custom selinux configuration)
041/100 ...done    (General)
042/100 ...done    (samba shared directories selinux)
043/100 ...done    (CUPS Browsing/BrowsePoll configuration)
044/100 ...done    (CVS Package Split)
045/100 ...done    (FreeRADIUS Upgrade Verification)
046/100 ...done    (httpd configuration compatibility check)
047/100 ...done    (bind-dyndb-ldap)
048/100 ...done    (Identity Management Server compatibility check)
049/100 ...done    (IPA Server CA Verification)
050/100 ...done    (NTP configuration)
051/100 ...done    (Information on time-sync.target)
052/100 ...done    (OpenLDAP /etc/sysconfig and data compatibility)
053/100 ...done    (OpenSSH sshd_config migration content)
054/100 ...done    (OpenSSH sysconfig migration content)
055/100 ...done    (Configuration for quota_nld service)
056/100 ...done    (Disk quota netlink message daemon moved into quota-nld package)
057/100 ...done    (SSSD compatibility check)
058/100 ...done    (Luks encrypted partition)
059/100 ...done    (Clvmd and cmirrord daemon management.)
060/100 ...done    (State of LVM2 services.)
061/100 ...done    (device-mapper-multipath configuration compatibility check)
062/100 ...done    (Removal of scsi-target-utils)
063/100 ...done    (Configuration for warnquota tool)
064/100 ...done    (Disk quota tool warnquota moved into quota-warnquota package)
065/100 ...done    (Check for Add-On availability)
066/100 ...done    (Architecture Support)
067/100 ...done    (Binary rebuilds)
068/100 ...done    (Debuginfo packages)
069/100 ...done    (Cluster and High Availablility)
070/100 ...done    (fix krb5kdc config file)
071/100 ...done    (File Systems, Partitions and Mounts Configuration Review)
072/100 ...done    (Read Only FHS directories)
073/100 ...done    (Red Hat Enterprise Linux Server variant)
074/100 ...done    (Sonamebumped libs)
075/100 ...done    (SonameKept Reusable Dynamic Libraries)
076/100 ...done    (Removed .so libs)
077/100 ...done    (In-place Upgrade Requirements for the /usr/ Directory)
078/100 ...done    (CA certificate bundles modified)
079/100 ...done    (Developer Tool Set packages)
080/100 ...done    (Hyper-V)
081/100 ...done    (Content for enabling and disabling services based on RHEL 6 system)
082/100 ...done    (Check for ethernet interface naming)
083/100 ...done    (User modification in /etc/rc.local and /etc/rc.d/rc.local)
084/100 ...done    (cgroups configuration compatibility check)
085/100 ...done    (Plugable authentication modules (PAM))
086/100 ...done    (Foreign Perl modules)
087/100 ...done    (Python 2.7.5)
088/100 ...done    (Ruby 2.0.0)
089/100 ...done    (SCL collections)
090/100 ...done    (Red Hat Subscription Manager)
091/100 ...done    (Red Hat Network Classic Unsupported)
092/100 ...done    (System kickstart)
093/100 ...done    (YUM)
094/100 ...done    (Check for usage of dangerous range of UID/GIDs)
095/100 ...done    (Incorrect usage of reserved UID/GIDs)
096/100 ...done    (NIS ypbind config files back-up)
097/100 ...done    (NIS Makefile back-up)
098/100 ...done    (NIS server maps check)
099/100 ...done    (NIS server MAXUID and MAXGID limits check)
100/100 ...done    (NIS server config file back-up)
Assessment finished (time 00:02s)
Result table with checks and their results for main contents:
------------------------------------------------------------------------------------------------------------------------------
|Configuration Files to Review                                                                               |notapplicable  |
|File Lists for Manual Migration                                                                             |notapplicable  |
|Bacula Backup Software                                                                                      |notapplicable  |
|MySQL configuration                                                                                         |notapplicable  |
|Migration of the MySQL data stack                                                                           |notapplicable  |
|General changes in default MySQL implementation                                                             |notapplicable  |
|PostgreSQL upgrade content                                                                                  |notapplicable  |
|GNOME Desktop Environment underwent several design modifications in Red Hat Enterprise Linux 7 release      |notapplicable  |
|KDE Desktop Environment underwent several design modifications in Red Hat Enterprise Linux 7 release        |notapplicable  |
|several graphic drivers not supported in Red Hat Enterprise Linux 7                                         |notapplicable  |
|several input drivers not supported in Red Hat Enterprise Linux 7                                           |notapplicable  |
|several kernel networking drivers not available in Red Hat Enterprise Linux 7                               |notapplicable  |
|several kernel storage drivers not available in Red Hat Enterprise Linux 7                                  |notapplicable  |
|Names, Options and Output Format Changes in arptables                                                       |notapplicable  |
|BIND9 running in a chroot environment check.                                                                |notapplicable  |
|BIND9 configuration compatibility check                                                                     |notapplicable  |
|Move dhcpd/dhcprelay arguments from /etc/sysconfig/* to *.service files                                     |notapplicable  |
|DNSMASQ configuration compatibility check                                                                   |notapplicable  |
|Dovecot configuration compatibility check                                                                   |notapplicable  |
|Compatibility Between iptables and ip6tables                                                                |notapplicable  |
|Net-SNMP check                                                                                              |notapplicable  |
|Squid configuration compatibility check                                                                     |notapplicable  |
|Reusable Configuration Files                                                                                |notapplicable  |
|VCS repositories                                                                                            |notapplicable  |
|Added and extended options for BIND9 configuration                                                          |notapplicable  |
|Added options in DNSMASQ configuration                                                                      |notapplicable  |
|Packages not signed by Red Hat                                                                              |notapplicable  |
|Obsoleted rpms                                                                                              |notapplicable  |
|w3m not available in Red Hat Enterprise Linux 7                                                             |notapplicable  |
|report incompatibilities between Red Hat Enterprise Linux 6 and 7 in qemu-guest-agent package               |notapplicable  |
|Removed options in coreutils binaries                                                                       |notapplicable  |
|Removed options in gawk binaries                                                                            |notapplicable  |
|Removed options in netstat binary                                                                           |notapplicable  |
|Removed options in quota tools                                                                              |notapplicable  |
|Removed rpms                                                                                                |notapplicable  |
|Replaced rpms                                                                                               |notapplicable  |
|GMP library incompatibilities                                                                               |notapplicable  |
|optional channel problems                                                                                   |notapplicable  |
|package downgrades                                                                                          |notapplicable  |
|restore custom selinux configuration                                                                        |notapplicable  |
|General                                                                                                     |notapplicable  |
|samba shared directories selinux                                                                            |notapplicable  |
|CUPS Browsing/BrowsePoll configuration                                                                      |notapplicable  |
|CVS Package Split                                                                                           |notapplicable  |
|FreeRADIUS Upgrade Verification                                                                             |notapplicable  |
|httpd configuration compatibility check                                                                     |notapplicable  |
|bind-dyndb-ldap                                                                                             |notapplicable  |
|Identity Management Server compatibility check                                                              |notapplicable  |
|IPA Server CA Verification                                                                                  |notapplicable  |
|NTP configuration                                                                                           |notapplicable  |
|Information on time-sync.target                                                                             |notapplicable  |
|OpenLDAP /etc/sysconfig and data compatibility                                                              |notapplicable  |
|OpenSSH sshd_config migration content                                                                       |notapplicable  |
|OpenSSH sysconfig migration content                                                                         |notapplicable  |
|Configuration for quota_nld service                                                                         |notapplicable  |
|Disk quota netlink message daemon moved into quota-nld package                                              |notapplicable  |
|SSSD compatibility check                                                                                    |notapplicable  |
|Luks encrypted partition                                                                                    |notapplicable  |
|Clvmd and cmirrord daemon management.                                                                       |notapplicable  |
|State of LVM2 services.                                                                                     |notapplicable  |
|device-mapper-multipath configuration compatibility check                                                   |notapplicable  |
|Removal of scsi-target-utils                                                                                |notapplicable  |
|Configuration for warnquota tool                                                                            |notapplicable  |
|Disk quota tool warnquota moved into quota-warnquota package                                                |notapplicable  |
|Check for Add-On availability                                                                               |notapplicable  |
|Architecture Support                                                                                        |notapplicable  |
|Binary rebuilds                                                                                             |notapplicable  |
|Debuginfo packages                                                                                          |notapplicable  |
|Cluster and High Availablility                                                                              |notapplicable  |
|fix krb5kdc config file                                                                                     |notapplicable  |
|File Systems, Partitions and Mounts Configuration Review                                                    |notapplicable  |
|Read Only FHS directories                                                                                   |notapplicable  |
|Red Hat Enterprise Linux Server variant                                                                     |notapplicable  |
|Sonamebumped libs                                                                                           |notapplicable  |
|SonameKept Reusable Dynamic Libraries                                                                       |notapplicable  |
|Removed .so libs                                                                                            |notapplicable  |
|In-place Upgrade Requirements for the /usr/ Directory                                                       |notapplicable  |
|CA certificate bundles modified                                                                             |notapplicable  |
|Developer Tool Set packages                                                                                 |notapplicable  |
|Hyper-V                                                                                                     |notapplicable  |
|Content for enabling and disabling services based on RHEL 6 system                                          |notapplicable  |
|Check for ethernet interface naming                                                                         |notapplicable  |
|User modification in /etc/rc.local and /etc/rc.d/rc.local                                                   |notapplicable  |
|cgroups configuration compatibility check                                                                   |notapplicable  |
|Plugable authentication modules (PAM)                                                                       |notapplicable  |
|Foreign Perl modules                                                                                        |notapplicable  |
|Python 2.7.5                                                                                                |notapplicable  |
|Ruby 2.0.0                                                                                                  |notapplicable  |
|SCL collections                                                                                             |notapplicable  |
|Red Hat Network Classic Unsupported                                                                         |notapplicable  |
|Red Hat Subscription Manager                                                                                |notapplicable  |
|System kickstart                                                                                            |notapplicable  |
|YUM                                                                                                         |notapplicable  |
|Check for usage of dangerous range of UID/GIDs                                                              |notapplicable  |
|Incorrect usage of reserved UID/GIDs                                                                        |notapplicable  |
|NIS ypbind config files back-up                                                                             |notapplicable  |
|NIS Makefile back-up                                                                                        |notapplicable  |
|NIS server maps check                                                                                       |notapplicable  |
|NIS server MAXUID and MAXGID limits check                                                                   |notapplicable  |
|NIS server config file back-up                                                                              |notapplicable  |
------------------------------------------------------------------------------------------------------------------------------
Tarball with results is stored here /root/preupgrade-results/preupg_results-140709010913.tar.gz .
The latest assessment is stored in directory /root/preupgrade .
Upload results to UI by command:
e.g. preupg -u http://127.0.0.1:8099/submit/ -r /root/preupgrade-results/preupg_results-*.tar.gz .
[root@localhost ~]#

で、実はこれで終わりではない。
また、以下のコマンドを実行する。

redhat-upgrade-tool-cli --network 7.0 --instrepo http://mirror.centos.org/centos/7/os/x86_64/

上記でうまくいかない場合は、以下のように「–force」オプションを付与する。

redhat-upgrade-tool-cli --network 7.0 --instrepo http://mirror.centos.org/centos/7/os/x86_64/ --force

上記処理が完了後、rebootコマンドで再起動するとアップグレードが開始される。
再起動後、「/etc/redhat-release」の値が「CentOS Linux release 7.0.1406 (Core)」(2014/7/9現在)になっていればアップグレード完了。

 

まだちゃんと検証し切ってないので、やる場合は自己責任でお願いします。

Pocket

Written by blacknon

インフラ系のSE。一時期はプログラマ。 仮想化とオープンソースに興味あり。一日中寝てたい今日このごろ。 スペインとかで働きたいなぁ…(シエスタがあるので)

This article has 15 comments

  1. やってみました Reply

    mod_wsgi も依存関係がありました。python-rhsm に必要とのことです。

  2. blacknon
    blacknon Reply

    ありがとうございます。
    私の環境では出なかったため、把握出来ていなかったようです。

    帰宅したら追記させていただきます。

  3. HRD Reply

    有益な記事、ありがとうございます。

    mod_wsgiはこちらでも必要でした。
    また、実行後、下記エラーが出るようです。

    # redhat-upgrade-tool-cli –network 7.0 –instrepo http://mirror.centos.org/centos/7/os/x86_64/ –force

    “””
    Downloading failed: The GPG keys listed for the “CentOS-7.0 – Base” repository are already installed but they are not correct for this package.
    Check that the correct key URLs are configured for this repository.
    “””

    解決策としては、レポジトリを指定して再実行することでOKでした.

    # redhat-upgrade-tool-cli –instrepo=http://mirror.bytemark.co.uk/centos/7/os/x86_64/ –network=7 –force –nogpgcheck

  4. 中島 Reply

    参考になりました。
    ありがとうございました。

    私の環境では、以下の rpm がなかったので、以下の作業も必要でした。
    yum install perl
    yum install mod_wsgi

    また、最後は次である必要がありました。

    redhat-upgrade-tool-cli –instrepo=http://mirror.bytemark.co.uk/centos/7/os/x86_64/ –network=7 –force –nogpgcheck

  5. とおりすがり Reply

    情報ありがとうございます。
    こちらの手順どおりで下記まで順調に進みました。
    最後に下記が同様に出たので、–nogpgcheck でGPG Keyがnot correctなのを回避しました。

    Downloading failed: The GPG keys listed for the “CentOS-7.0 – Base” repository are already installed but they are not correct for this package.

  6. けーつーぴあ Reply

    どちらもうまくいきません…
    以下のようになります。

    [root@k2pia ~]# redhat-upgrade-tool-cli –network 7.0 –instrepo http://mirror.centos.org/centos/7/os/x86_64/ –force –nogpgcheck
    setting up repos…
    .treeinfo | 1.1 kB 00:00
    getting boot images…
    setting up update…
    verify local files 100% [========================================================================================================================================================]
    warning: rpmts_HdrFromFdno: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY

    Downloading failed: The GPG keys listed for the “CentOS-7.0 – Base” repository are already installed but they are not correct for this package.
    Check that the correct key URLs are configured for this repository.
    [root@k2pia ~]# rpm -–import http://ftp.plusline.de/centos/7.0.1406/os/x86_64/RPM-GPG-KEY-CentOS-7
    -–import: 不明なオプション
    [root@k2pia ~]#

    本来なら有効になるはずのオプションが、全く機能せずにエラーになります。
    解決方法はないでしょうか。

  7. ひよっこ Reply

    このような結果となり、うまくアップデートできません!
    同じようにうまくアップデートができない人いませんか?

    [root@localhost ~]# preupg -s RHEL6_7
    Preupg tool doesn’t do the actual upgrade.
    Please ensure you have backed up your system and/or data in the event of a failed upgrade
    that would require a full re-install of the system from installation media.
    Do you want to continue? y/n
    y
    Specify correct upgrade path parameter like -s RHEL6_7
    Upgrade path is provided by command preupg –list

    • meni Reply

      メッセージの最後にあるように
      preupg -list
      とすると、
      CentOS6_7
      と出ませんか?(私のCentOS6.5の環境ではそうなりました)
      preupg -s CentOS6_7
      とするとOKです。

  8. Pingback: CentOS6.5からCentOS7にアップグレードする | Vorfee

  9. Pingback: Pocketの利用方法

Leave a Comment

メールアドレスが公開されることはありません。