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CentOS7.6 ネットワーク設定

Last updated at Posted at 2019-02-10

確認環境

macOS 10.14.3
VirtualBox 6.0.4
CentOS 7.6.1810

ネットワークデバイス設定

$ nmcli
enp0s3: disconnected
"Intel 82540EM"
1 connection available
ethernet (e1000), 08:00:27:93:3E:D8, h2, Mts 1500

lo: unmanaged
"lo"
loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536

User "nmcli device show@ to get complete information about known devices and
"nmcli connection show" to get an overview on active connection profiles.

Consult nmcli(1) and imcli-examples(5) manual pages for complete usage details

disconnected となっている enp0s3 をネットワークへ接続する。

$ nmcli connection up enp0s3

Connection successfully activated (D-Bus action path: /org/freedesktop.NetowrkManager/ActiveConnection/3)

接続できていることを確認する。

$ nmcli
enp0s3: connected to enp0s3
"Intel 82540EM"
ethernet (e1000), 08:00:27:93:3E:D8, h2, Mts 1500
ip4 default
ienet4 10.0.1.12/24
route4 0.0.0.0/0
route4 10.0.1.0/24
inet6 fe80::a638:f7cd:86d9:439f/64
route6 fe80::/64
route6 ff00::/8

lo: unmanaged
"lo"
loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536

DNS configuration:
servers: 10.0.1.1
interface: enp0s3

User "nmcli device show@ to get complete information about known devices and
"nmcli connection show" to get an overview on active connection profiles.

Consult nmcli(1) and imcli-examples(5) manual pages for complete usage details

以下のコマンドで切断する

$ nmcli connection down enp0s3

Connection successfully deactivated (D-Bus action path: /org/freedesktop.NetowrkManager/ActiveConnection/3)

起動時のネットワーク設定

下記サイトを参考に修正しました。

CentOSで起動と同時にネットワーク設定がされない(eth0が起動しない)ときの対処

$ vi /etc/sysconfig/network-scripts/ifcfg-eth0

以下を修正

ONBOOT=yes

ミラーサイト設定

下記サイトを参考に修正しました。

CentOS7 yum updateでエラーが出るとき

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