es运维

 

Virtual memory

sysctl -w vm.max_map_count=262144

 

Disable swap

Usually Elasticsearch is the only service running on a box, and its memory usage is controlled by theES_HEAP_SIZE environment variable. There should be no need to have swap enabled.

On Linux systems, you can disable swap temporarily by running: sudo swapoff -a. To disable it permanently, you will need to edit the /etc/fstab file and comment out any lines that contain the word swap.

 

Configure swappiness

vm.swappiness is set to 0

 

mlockall

config/elasticsearch.yml file:

 

bootstrap.mlockall:true

这是让 JVM 启动的时候就 锁定 heap 内存。 

 

 

参考：

setup-configuration；

Heap: Sizing and Swapping;

index-modules-store;