error: Failed dependencies: libecpg.so.6()(64bit) is needed by postgresql-devel-9.2.24-8.el7_9.x86_64 libecpg_compat.so.3()(64bit) is needed by postgresql-devel-9.2.24-8.el7_9.x86_64 libpgtypes.so.3()(64bit) is needed by postgresql-devel-9.2.24-8.el7_9.x86_64 libpq.so.5()(64bit) is needed by postgresql-devel-9.2.24-8.el7_9.x86_64 postgresql(x86-64) = 9.2.24-8.el7_9 is needed by postgresql-devel-9.2.24-8.el7_9.x86_64 postgresql-libs(x86-64) = 9.2.24-8.el7_9 is needed by postgresql-devel-9.2.24-8.el7_9.x86_64

这是一个错误提示，显示postgresql-devel软件包安装失败，因为缺少一些依赖项。需要安装这些依赖项，才能成功安装postgresql-devel软件包。您可以尝试使用以下命令安装这些依赖项：

yum install postgresql postgresql-libs postgresql-devel

这将安装所需的所有依赖项，并且您应该能够成功安装postgresql-devel软件包。