max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

安装es报错

bootstrap check failure [1] of [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

我们只需要修改下vm.max_map_count即可

sysctl -w vm.max_map_count=262144