docker vm.max_map_count [65530] is too low

docker 启动 elasticsearch 闪退

docker logs elasticsearch

... ...
ERROR: [1] bootstrap checks failed
[1]: max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]
ERROR: Elasticsearch did not exit normally - check the logs at /usr/share/elasticsearch/logs/docker-cluster.log

... ...

临时修改

sysctl -w vm.max_map_count=262144

查看结果：

sysctl -a|grep vm.max_map_count

显示：

vm.max_map_count = 262144

永久修改：

解决办法：

在 /etc/sysctl.conf文件最后添加一行

vm.max_map_count=262144