MongoDB 控制内存使用量

增加storage.wiredTiger.engineConfig.cacheSizeGB配置项，我设置的是1G

1 完整配置文件如下：

storage:
  #dbPath: /var/lib/mongodb
  dbPath: /data/mongodb/singleton/data
  journal:
    enabled: true

#  engine:

#  mmapv1:
  wiredTiger:
    engineConfig:
      cacheSizeGB: 1

systemLog:
  destination: file
  logAppend: true
  #path: /var/log/mongodb/mongod.log
  path: /data/mongodb/singleton/logs/mongodb.log

net:
  #port: 27017
  port: 57017
  bindIp: 0.0.0.0

processManagement:
   fork: true

2 内存限制配置说明

官网地址如下：

https://docs.mongodb.com/manual/reference/configuration-options/