Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn。Centos7 無法啟動網絡(service network restart)錯誤解決辦法（個人經驗）

本文轉載自查看原文 2020-02-27 15:11 2369

Vmware虛擬機有時會出現突發性的問題，除了剛創建虛擬機啟動時需要改vmx文件的FALSE選項、移動虛擬機時網卡需要重設等，比較難辦的是出現

Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn，根據網上的三種方法：ip addr根據mac地址修改eth網卡設置（由於centos7中沒有70-persistent-net.rules這個文件，復制出來的虛擬機(vmware）需要修改mac地址）、關閉network manager設置（這是由於dhcp會與mac地址沖突）、重設vmware網絡配置（即刪除網卡重新分配）或是刪除70-persistent-net.rules都不起作用。如下：

 1 [root@slave01 hadoop]# service network restart
 2 Starting network (via systemctl):  Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details.
 3                                                            [失敗]
 4 [root@slave01 hadoop]#  journalctl -xe
 5 10月 09 17:39:20 slave01 network[12763]: 正在打開環回接口： [  確定  ]
 6 10月 09 17:39:20 slave01 NetworkManager[730]: <info>  [1539077960.4630] audit: op="conn
 7 10月 09 17:39:20 slave01 network[12763]: 正在打開接口 ens33： 錯誤：激活連接失敗：No su
 8 10月 09 17:39:20 slave01 network[12763]: [失敗]
 9 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
10 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
11 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
12 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
13 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
14 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
15 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
16 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
17 10月 09 17:39:20 slave01 network[12763]: RTNETLINK answers: File exists
18 10月 09 17:39:20 slave01 systemd[1]: network.service: control process exited, code=exit
19 10月 09 17:39:20 slave01 systemd[1]: Failed to start LSB: Bring up/down networking.
20 -- Subject: Unit network.service has failed
21 -- Defined-By: systemd
22 -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
23 --
24 -- Unit network.service has failed.
25 --
26 -- The result is failed.
27 10月 09 17:39:20 slave01 systemd[1]: Unit network.service entered failed state.
28 10月 09 17:39:20 slave01 systemd[1]: network.service failed.
29 10月 09 17:39:20 slave01 polkitd[725]: Unregistered Authentication Agent for unix-proce
30 解決如下
31 
32 執行如下命令：
33 stop NetworkManager
34 systemctl disable NetworkManager
35 然后：重啟網卡：
36 systemctl restart network

個人解決方法：由於重設網絡適配器后更改mac地址，根據70-persistent-net.rules中的mac地址修改網卡配置文件重啟網絡后也沒有解決問題，最后根據提示信息在vmware重設網絡設置、修改mac地址后網卡配置文件可能和70-persistent-net.rules沖突，提示ifcfg-eth3不存在之類，在修改網絡配置文件的文件名編號與70-persistent-net.rules文件一致后解決問題。

這是個人比較特殊的情況，大部分情況都可以通過重設網卡或關閉network manager設置解決。

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Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn。Centos7 無法啟動網絡(service network restart)錯誤解決辦法 （個人經驗）

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Job for network.service failed. See 'systemctl status network.service' and 'journalctl -xn。Centos7 無法啟動網絡(service network restart)錯誤解決辦法（個人經驗）