Oracle 21c 安装Grid时，到Grid Plug and Play时，输入Cluster Name，SCAN Name等信息后，点击Next报错如下：
![[INS-40724] No locally defined network interface matches the SCAN subnet.](https://ctyun-collect-0531.gdoss.xstore.ctyun.cn/files/2024/09/03/60ebe640a2ea4748a0fc066555498369.png?x-oss-process=image/watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=/resize,m_fixed,w_1184 "[INS-40724] No locally defined network interface matches the SCAN subnet.")
[INS-40724] No locally defined network interface matches the SCAN subnet.
详细信息如下：
Cause - None of the locally defined network interfaces has a subnet matching the SCAN subnet.
Action - Define a public interface with a subnet matching the one you want to use for the SCAN.
原因是Scan IP设置不对造成此次异常，查看/etc/hosts文件.
![[INS-40724] No locally defined network interface matches the SCAN subnet.](https://ctyun-collect-0531.gdoss.xstore.ctyun.cn/files/2024/09/03/c1ecd0205b3c4b3c8fe5ba3a8031cc69.png?x-oss-process=image/watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=/resize,m_fixed,w_1184 "[INS-40724] No locally defined network interface matches the SCAN subnet.")
发现Scan IP与Public IP不在同一网段.
解决方案：按下图所示修改3个Scan IP.
![[INS-40724] No locally defined network interface matches the SCAN subnet.](https://ctyun-collect-0531.gdoss.xstore.ctyun.cn/files/2024/09/03/ab9dbf2f98584a2eb894f7633c95859c.png?x-oss-process=image/watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=/resize,m_fixed,w_1184 "[INS-40724] No locally defined network interface matches the SCAN subnet.")
修改完成后，此异常不再发生，顺利进入下一步.
![[INS-40724] No locally defined network interface matches the SCAN subnet.](https://ctyun-collect-0531.gdoss.xstore.ctyun.cn/files/2024/09/03/a6db2849ae3b4e0e9b8632fc6a9d9bad.png?x-oss-process=image/watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=/resize,m_fixed,w_1184 "[INS-40724] No locally defined network interface matches the SCAN subnet.")
