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CentOS7 の変更点まとめ

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【CentOS7 の変更点まとめ】

  • CentOS7 で追加された変更点を逆引き index 風に記載していく

◇ サービス管理

1. systemctl (CentOS6:init)

◇ ネットワーク管理

1. ホスト名の管理

  • /etc/hostname の設定ファイルで変更行う
  • CentOS6 の /etc/sysconfig/network では hostname ディレクティブを使用していたが、ファイルへ直接ホスト名を記載する方式へ変更されている。
vim /etc/hostname
hostname.domain.org
  • hostnamectl コマンドで設定確認が可能
hostnamectl
   Static hostname: hostname.domain.org
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 949b0417370445449cd0bf3cac8f1164
           Boot ID: d05c1163f215400aa683f625ba50ceea
    Virtualization: kvm
  Operating System: CentOS Linux 7 (Core)
       CPE OS Name: cpe:/o:centos:centos:7
            Kernel: Linux 3.10.0-327.13.1.el7.x86_64
      Architecture: x86-64

2. ip (CentOS6:ifconfig)

3. ss (CentOS6:netstat)

4. nmcli (CentOS6:ifup/ifdown)

5. firewalld (CentOS6:iptables)

  • CentOS6 の iptables が firewalld へ置き換えられている。

◇ クラスタ管理

1. Cluster (CentOS6:Corosync+Pacemaker+CMAN)

  • CentOS6.5 以降 CMAN を追加した構成が推奨だった。
    CentOS7 からは CMAN の機能が Corosync に FIX された為、Corosync + Pacemaker で動作する。
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