centos7 zabbix3.0安装报错
yum -y install zabbix-server-mysql zabbix-web-mysql zabbix-agent
它说https://mirrors.aliyun.com/zabbix/3.0/rhel/7/x86_64/repodata/repomd.xml: [Errno 14] HTTPS Error 404 - Not Found
最后发现原来是改yum源时出错
在/etc/yum.repos.d/路径下更改zabbix.repo时要注意将原来baseurl注释掉，添加的路径是…/zabbix/zabbix…（不要少zabbix，之前找不到就是因为少一个zabbix）
文件内容：
[zabbix]
name=Zabbix Official Repository - $basearch
baseurl=https://mirrors.aliyun.com/zabbix/zabbix/3.0/rhel/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX
[zabbix-non-supported]
name=Zabbix Official Repository non-supported - $basearch
baseurl=https://mirrors.aliyun.com/zabbix/non-supported/rhel/7/$basearch/
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX
gpgcheck=1
分割线————————————————————————
yum clean all
清除YUM缓存后
yum -y install zabbix-server-mysql zabbix-web-mysql zabbix-agent
就可以了