用搬瓦工的centos 6.8安装fail2ban，会提示找不到包： 解决方法： 先卸载以前的源 rpm -e epel-release-6-8.noarch 有时会提示有依赖无法卸载，先卸载依赖的包 0;root@host:~[root@host ~]# rpm -e epel-release-6-8.noarch error: Failed dependencies: epel-release = 6 is needed by (installed) remi-release-6.9-2.el6.remi.noarch 0;root@host:~[root@host ~]#rpm -qa|grep remi remi-release-6.9-2.el6.remi.noarch 0;root@host:~[root@host ~]#rpm -e remi-release-6.9-2.el ...