1.查看版本信息 [root@xxxx]# cat /etc/centos-release CentOS Linux release 7.9.2009 (Core) 2.根据版本信息找到对应的源 https://yum.opensips.org/packages.php?v=3.1 3.安装源 yum install https://yum.opensips.org/3.1/releases/el/7/x86_64/opensips-yum-releases-3.1-6.el7.noarch.rpm 4.安装opensips-cli yum install -y opensips-cli