MongoDB

• MongoDB 필드 삭제
• save pickle
• Mongodb Log file
• Mongodb Repair
• Mongodb Regex

# /var/log/mongodb/mongod.log

sudo cp /dev/null mongod.log

• https://stackoverflow.com/questions/34559557/how-to-enable-authentication-on-mongodb-through-docker/43441619#43441619

$ docker run -d --rm --name mongo_remote_container \
      -p 27000:27017 \
      -e MONGO_INITDB_ROOT_USERNAME=admin \
      -e MONGO_INITDB_ROOT_PASSWORD=secret_password \
      mongo \
      mongod --auth

docker run -d --rm --name mongo_remote_container \
  -e MONGODB_ADMIN_USER=admin \
  -e MONGODB_ADMIN_PASS=secret_admin_pa$$ \
  -e MONGODB_APPLICATION_DATABASE=mytestdatabase \
  -e MONGODB_APPLICATION_USER=testuser \
  -e MONGODB_APPLICATION_PASS=testpass \
  -p 27000:27017 aashreys/mongo-auth:latest \

db.auth('admin', 'secret_admin_pa$$')

snippet.json

db.getCollection('wine_collection').find({'name_ko': {'$regex' : ".*마르케시 디 바롤로, 사르마싸.*"}})

snippet.json

db.getCollection('wine_collection').find({"varieties" : {'$elemMatch' : {"$eq": "네비올로"}}})

• http://dev.youngkyu.kr/23

snippet.db

db.getCollection('stock_company').find({'daily_updated': {'$exists': true}}).count()

$unset 사용
multi: true 를 지정하여 여러 문서에 적용

db.getCollection('stock_company').update({}, {'$unset': {'daily_updated': ''}}, {'multi': true})

여러 필드를 삭제하는 경우

db.getCollection('stock_company').update({}, {'$unset': {'daily_updated': '', 'second_field': ''}}, {'multi': true})