MongodDB 3.0, wiredTiger, zlib, unixDomainSocket, yml format

mongod.conf

# mongod.conf

# for documentation of all options, see:
#   http://docs.mongodb.org/manual/reference/configuration-options/

# where to write logging data.
systemLog:
  destination: file
  logAppend: true
  path: /var/log/mongodb/mongod.log
  timeStampFormat: iso8601-utc

# Where and how to store data.
storage:
  dbPath: /var/lib/mongo
  directoryPerDB: true
  journal:
    enabled: true
  engine: wiredTiger
  wiredTiger:
    engineConfig:
      cacheSizeGB: 8
      journalCompressor: zlib
    collectionConfig:
      blockCompressor: zlib
    indexConfig:
      prefixCompression: true

# how the process runs
processManagement:
  fork: true  # fork and run in background
  pidFilePath: /var/run/mongodb/mongod.pid  # location of pidfile

# network interfaces
net:
  port: 27017
  bindIp: 127.0.0.1  # Listen to local interface only, comment to listen on all interfaces.
  unixDomainSocket:
    enabled : true
    filePermissions: 0770

#security:

#operationProfiling:

#replication:

#sharding:

## Enterprise-Only Options

#auditLog:

#snmp: