Keepalived+Nginx实现高可用Web负载均衡一、场景需求：二、Keepalived简要介绍 Keepalived是一种高性能的服务器高可用或热备解决方案，Keepalived可以用来防止服务器单点故障的发生，通过配合Nginx可以实现web前端服务的高可用。 Keepalived以VRRP协议为实现基础，用VRRP协议来实现高可用性(HA)。VRRP(VirtualRouterRedundancyProtocol)协议是用于实现路由器冗余的协议，VRRP协议将两台或多台路由器设备虚拟成一个设备，对外提供虚拟路由器IP(一个或多个)，而在路由器组内部，如果实际拥有这个对外IP的路由器

Keepalived-HA-主节点配置管理1.软件安装[root@ha1nginx]#yuminstall-ykeepalived[root@ha1nginx]#cd/etc/keepalived/[root@ha1keepalived]#mvkeepalived.confkeepalived.conf.bak2.主备配置-集群功能[root@ha1keepalived]#vimkeepalived.conf!ConfigurationFileforkeepalivedglobal_defs{notification_email{acassen@firewall.locfailover@fir

Keepalived-HA-主节点配置管理1.软件安装[root@ha1nginx]#yuminstall-ykeepalived[root@ha1nginx]#cd/etc/keepalived/[root@ha1keepalived]#mvkeepalived.confkeepalived.conf.bak2.主备配置-集群功能[root@ha1keepalived]#vimkeepalived.conf!ConfigurationFileforkeepalivedglobal_defs{notification_email{acassen@firewall.locfailover@fir

(大数据必知必会：Hadoop（4）高可用集群安装)安装前准备高可用集群环境下，至少需要3台服务器，这里准备5台。IP地址主机名称角色10.0.0.5node1JournalNode、NameNode、ResourceManager10.0.0.6node2JournalNode、NameNode、ResourceManager10.0.0.7node3JournalNode、DataNode、NodeManager10.0.0.8node4DataNode、NodeManager10.0.0.9node5DataNode、NodeManager需要保证每台服务器的配置都一致，以下步骤在5台服

(大数据必知必会：Hadoop（4）高可用集群安装)安装前准备高可用集群环境下，至少需要3台服务器，这里准备5台。IP地址主机名称角色10.0.0.5node1JournalNode、NameNode、ResourceManager10.0.0.6node2JournalNode、NameNode、ResourceManager10.0.0.7node3JournalNode、DataNode、NodeManager10.0.0.8node4DataNode、NodeManager10.0.0.9node5DataNode、NodeManager需要保证每台服务器的配置都一致，以下步骤在5台服

软件环境：软件版本操作系统CentOS7.8_x64（mini）Docker19-ceKubernetes1.20服务器整体规划：角色IP其他单装组件k8s-master1192.168.40.180docker，etcd，keepalivedk8s-master2192.168.40.181docker，etcd，keepalivedk8s-master3192.168.40.183docker，etcd，keepalived负载均衡器对外IP192.168.40.188(VIP)架构图：环境准备：#关闭防火墙systemctlstopfirewalldsystemctldisablefir

软件环境：软件版本操作系统CentOS7.8_x64（mini）Docker19-ceKubernetes1.20服务器整体规划：角色IP其他单装组件k8s-master1192.168.40.180docker，etcd，keepalivedk8s-master2192.168.40.181docker，etcd，keepalivedk8s-master3192.168.40.183docker，etcd，keepalived负载均衡器对外IP192.168.40.188(VIP)架构图：环境准备：#关闭防火墙systemctlstopfirewalldsystemctldisablefir