{"id":4206,"date":"2024-03-13T08:07:12","date_gmt":"2024-03-13T08:07:12","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-modify-the-dns-configuration-file-in-centos-7\/"},"modified":"2025-07-31T04:44:19","modified_gmt":"2025-07-31T04:44:19","slug":"how-to-modify-the-dns-configuration-file-in-centos-7","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-modify-the-dns-configuration-file-in-centos-7\/","title":{"rendered":"CentOS 7 DNS Configuration Guide"},"content":{"rendered":"

To change the DNS configuration file in CentOS 7, follow these steps:<\/p>\n

    \n
  1. the resolv.conf file<\/li>\n<\/ol>\n
    sudo vi \/etc\/resolv.conf\r\n<\/code><\/pre>\n
      \n
    1. In the open file, you can see content similar to the following:<\/li>\n<\/ol>\n
      # Generated by NetworkManager\r\nnameserver 192.168.1.1\r\n<\/code><\/pre>\n
        \n
      1. Domain name server<\/li>\n<\/ol>\n
        nameserver 8.8.8.8\r\nnameserver 8.8.4.4\r\n<\/code><\/pre>\n
          \n
        1. Save the file and exit the text editor.<\/li>\n
        2. Restart the network service to apply the new DNS configuration.<\/li>\n<\/ol>\n
          sudo systemctl restart network\r\n<\/code><\/pre>\n
          Once you have completed the above steps, you have successfully modified the DNS configuration file in CentOS 7. Note that if you are using NetworkManager for network configuration management, it may override the \/etc\/resolv.conf file. In such cases, you can specify the DNS server in the NetworkManager configuration file or set \/etc\/resolv.conf to read-only to prevent it from being overwritten.<\/p>\n","protected":false},"excerpt":{"rendered":"
          To change the DNS configuration file in CentOS 7, follow these steps: the resolv.conf file sudo vi \/etc\/resolv.conf In the open file, you can see content similar to the following: # Generated by NetworkManager nameserver 192.168.1.1 Domain name server nameserver 8.8.8.8 nameserver 8.8.4.4 Save the file and exit the text editor. Restart the network service […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[1638,64,2013,3547,3546],"class_list":["post-4206","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-centos-7","tag-dns-configuration","tag-linux-networking","tag-networkmanager","tag-resolv-conf"],"yoast_head":"\nCentOS 7 DNS Configuration Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to modify DNS configuration files in CentOS 7. 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