安装keepalived1.3.5版本所需rpm包以及对应的安装顺序
1. rpm -ivh net-snmp-libs-5.7.2-38.el7_6.2.x86_64.rpm
2. rpm -ivh perl-Data-Dumper-2.145-3.el7.x86_64.rpm
3. rpm -ivh net-snmp-agent-libs-5.7.2-38.el7_6.2.x86_64.rpm
4. rpm -ivh keepalived-1.3.5-8.el7_6.5.x86_64.rpm
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