mongodb replica

install

openssl rand -base64 741 > mongodb-keyfile

rs.initiate(
  {
    _id : "rs0",
    members: [
      { _id : 0, host : "acs-server-9:27018" },
      { _id : 1, host : "acs-server-9:27019" }
    ]
  }
)
rs.status()

use admin
db.createUser(
  {
    user: "admin",
    pwd: "xxx",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" }, "readWriteAnyDatabase" ]
  }
)
db.createUser( {
    user: "root",
    pwd: "xxx",
    roles: [ { role: "root", db: "admin" } ]
});