原文链接 https://bigborg.github.io/2017/02/27/mongodb-for-DBAs-wk7/
注：以下为加速网络访问所做的原文缓存，经过重新格式化，可能存在格式方面的问题，或偶有遗漏信息，请以原文为准。
Security
- authentication
- access control/authorization
- encryption
- network setup
- auditting
authentication
用户信息存储在dbname.system.users, 当dbname为admin时为全局设置，当使用数据库级别设置（即dbname不等于admin时）可以在不同的数据库使用相同的用户名而不产生冲突。
mongod --auth
mongos --auth
use admin
db.system.users
var me = {user:"borg", pwd:"123", roles:["userAdminAnyDatabase"]}
db.createUser(me)
mongo -u borg -p # 连接时验证
db.auth(name,password) # 连接后再验证
用户的角色可以是：
- read
- readWrite
- dbAdmin
- userAdmin
- clusterAdmin
- readAnyDatabase
- readWriteAnyDatabase
- dbAdminAnyDatabase
- userAdminAnyDatabase
Intra-cluster Security
--keyfile用于mongod进程间的验证，mongos也需要使用。
touch keyfile
chmod 600 keyfile
openssl rand -base64 60 >> keyfile
mongod --keyFile keyfile
mongos --keyFile keyfiel
Backing Up
- mongodump
- filesystem snapshot
- backup from secondary
- shutdown, copyfiles, restart
mongodump
mongodump --oplog mongorestore --oplogReplay
filesystem snapshot
journaling should be enabled
backing up a sharded cluster
- turn off balancer: sh.stopBalancer()
- backup config db: mongodump --db config
- back up each shard's ReplSet
- sh.startBalancer()
Additional Features of MongoDB
- capped collection: document in capped database can not be reallocated(delete or grow)
- TTL collection
- GridFS: for data larger than 16MB
Additional Resources
- docs: mongodb.org
- driver docs
- jira.mongodb.org
- support forums: mongodb-user in google groups
- IRC: freenode.net/#mongodb
- github.com for source code
- blog.mongodb.org
- meetup.com