MongoDB Users, Roles, and Administrative Commands

use admin

db.createUser({
  user: "appuser",
  pwd: "strong-password",
  roles: [{ role: "readWrite", db: "appdb" }]
})

# Create a database user with roles.

db.getUsers()

# List users in the current database.

db.grantRolesToUser("appuser", [{ role: "dbAdmin", db: "appdb" }])

# Add roles to an existing user.

db.changeUserPassword("appuser", "new-strong-password")

# Rotate a database credential.

db.dropUser("appuser")

# Remove a user account.

db.adminCommand({ serverStatus: 1 })

# Inspect a detailed server-status document.

db.currentOp()

# See active operations on the server.

db.killOp(12345)

# Stop a running operation by op id.

db.adminCommand({ ping: 1 })

# Verify the server is responsive.

db.adminCommand({ buildInfo: 1 })

# Return server version metadata.