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  • yum 安装出错--"Couldn't resolve host 'mirrors.aliyun.com'"

    1.yum 安装出错

    [root@iz25m0z7ik3z ~]#yum install mysql

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    1. [root@iZ25m0z7ik3Z ~]#yum install mysql  
    2. Loaded plugins: security  
    3. http://mirrors.aliyun.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyun.com'"  
    4. Trying other mirror.  
    5. http://mirrors.aliyuncs.com/centos/6/os/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyuncs.com'"  
    6. Trying other mirror.  
    7. http://mirrors.aliyun.com/epel/6/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyun.com'"  
    8. Trying other mirror.  
    9. http://mirrors.aliyuncs.com/epel/6/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyuncs.com'"  
    10. Trying other mirror.  
    11. http://mirrors.aliyun.com/centos/6/extras/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyun.com'"  
    12. Trying other mirror.  
    13. http://mirrors.aliyuncs.com/centos/6/extras/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyuncs.com'"  
    14. Trying other mirror.  
    15. http://mirrors.aliyun.com/centos/6/updates/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyun.com'"  
    16. Trying other mirror.  
    17. http://mirrors.aliyuncs.com/centos/6/updates/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host 'mirrors.aliyuncs.com'"  
    18. Trying other mirror.  
    19. Setting up Install Process  
    20. Package mysql-5.1.73-5.el6_6.x86_64 already installed and latest version  
    21. Nothing to do  


    2. 修改dns

    [root@iz25m0z7ik3z ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

    文末添加

    DNS1=8.8.8.8
    DNS2=8.8.4.4

    3. 重启network 服务

    [root@iz25m0z7ik3z ~]# service network restart

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    1. Shutting down interface eth0:  Device state: 3 (disconnected)  
    2.                                                            [  OK  ]  
    3. Shutting down interface eth1:                              [  OK  ]  
    4. Shutting down loopback interface:                          [  OK  ]  
    5. FATAL: Module off not found.  
    6. Bringing up loopback interface:                            [  OK  ]  
    7. Bringing up interface eth0:  Active connection state: activated  
    8. Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/2  
    9.                                                            [  OK  ]  
    10. Bringing up interface eth1:  RTNETLINK answers: File exists  
    11. RTNETLINK answers: File exists  
    12.                                                            [  OK  ]  
    13. FATAL: Module off not found.  

    4. 如下提示表示network  服务 与 NetworkManager服务冲突

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    1. Bringing up interface eth0:  Active connection state: activated  
    2. Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/2  
    3.                                                            [  OK  ]  

    应该是之前安装了图形界面“X Window System”导致。

    5. 停止NetworkManager

    [root@iz25m0z7ik3z ~]#  service NetworkManager stop

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    1. Stopping NetworkManager daemon:                            [  OK  ]  

    6. 再次重启 network 服务

    [root@iz25m0z7ik3z ~]#  service network restart

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    1. Shutting down interface eth0:                              [  OK  ]  
    2. Shutting down interface eth1:                              [  OK  ]  
    3. Shutting down loopback interface:                          [  OK  ]  
    4. FATAL: Module off not found.  
    5. Bringing up loopback interface:                            [  OK  ]  
    6. Bringing up interface eth0:  Determining if ip address 10.44.153.37 is already in use for device eth0...  
    7.                                                            [  OK  ]  
    8. Bringing up interface eth1:  Determining if ip address 101.200.188.182 is already in use for device eth1...  
    9. RTNETLINK answers: File exists  
    10.                                                            [  OK  ]  
    11. FATAL: Module off not found.  


    7. 该警告一般是由于网卡解析arp协议导致的，可在网卡的配置文件中加入ARPCHECK=NO参数来屏蔽该检查

    [root@iz25m0z7ik3z ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0

    文末添加

    ARPCHECK=no

    再次启动网卡

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    1. Shutting down interface eth0:                              [  OK  ]  
    2. Shutting down interface eth1:                              [  OK  ]  
    3. Shutting down loopback interface:                          [  OK  ]  
    4. FATAL: Module off not found.  
    5. Bringing up loopback interface:                            [  OK  ]  
    6. Bringing up interface eth0:                                [  OK  ]  
    7. Bringing up interface eth1:  RTNETLINK answers: File exists  
    8.                                                            [  OK  ]  
    9. FATAL: Module off not found.  

    至此yum update 一切正常。

    来源:http://blog.csdn.net/zhugq_1988/article/details/47784031
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  • 原文地址：https://www.cnblogs.com/kongxc/p/7866278.html
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