K8S在部署应用时，总提示OOMkilled

问题原因：
Linux内核限制，vm.map_count参数默认设置过小
解决方法
vi /etc/sysctl.conf修改内核参数
添加一条属性vm.max_map_count = 300000
修改后sysctl -p使配置生效
以上操作均要在root用户下

[root@ks-allinone ~]# vi /etc/sysctl.conf
[root@ks-allinone ~]# sysctl -p
net.ipv4.ip_forward = 1
net.ipv4.ip_local_reserved_ports = 30000-32767
net.bridge.bridge-nf-call-iptables = 1
net.bridge.bridge-nf-call-arptables = 1
net.bridge.bridge-nf-call-ip6tables = 1
vm.max_map_count = 300000