正在运行的zabbix版本：Zabbix3.0.27

准备升级到的zabbix版本：Zabbix 4.0.7

1、 停止服务

service zabbix-server stop

service zabbix-agent stop

service httpd stop

2、备份 zabbix 文件

mkdir /opt/zabbix-backup/

cp /etc/zabbix/zabbix_server.conf /opt/zabbix-backup/

cp /etc/httpd/conf.d/zabbix.conf  /opt/zabbix-backup/

cp -R /usr/share/zabbix/ /opt/zabbix-backup/

cp -R /usr/share/doc/zabbix-* /opt/zabbix-backup/

3、升级zabbix源

rpm -Uvh https://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm

4、升级zabbix

 yum upgrade zabbix-server-mysql zabbix-web-mysql zabbix-agent zabbix-proxy-mysql

 yum clean all

 yum upgrade zabbix-server-mysql zabbix-web-mysql zabbix-agent

5、启动zabbix

service zabbix-server start

service zabbix-agent start

service httpd start

service zabbix-server start时，查看升级日志

tail -f /var/log/zabbix/zabbix_server.log