Operation and MaintenanceDockerHow to solve the problem of insufficient memory when running docker
docker运行提示内存不够的解决方法：
1、saltstack的minion在运行过久之后，可能占用大量内存，需要将其重启。重启命令可能有时并不起作用。主要检查运行状态，如果未成功停止，则重新重启；
2、ELK日志收集程序或者其他java进程占用过高，用top和ps命令排查，谨慎确定进程的作用，在确保不影响业务的情况下，停止相关进程；
3、释放被占用的内存（buff/cache）：
$sync #将内存数据写入磁盘 $echo 3 > /proc/sys/vm/drop_caches #释放被占用的内存
4、有时候并不是buff/cache过高导致内存不够用，确实是被很多必要的进程消耗掉了内存，那就需要从机器资源分配使用的层面去考虑和解决了。
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