How to create a mongodb user who can read write but not delete a document.
As mistakes can happen so some people may want to disable delete option for users. which can be achieved using the below tutorial.
It took me few minutes to find so sharing so it may reduce some peoples time in searching.
In order to do that we have to create a role.
Go to admin db
use admin
then execute the below command
db.createRole(
{
role: "customROle",
privileges: [
{ resource: { cluster: true }, actions: [ "addShard" ] },
{ resource: { db: "config", collection: "" }, actions: [ "find", "update", "insert"] },
{ resource: { db: "", collection: "" }, actions: [ "update", "insert", "find" ] }
],
roles: [
{ role: "readWrite", db: "admin" }
]
},
{ w: "majority" , wtimeout: 5000 }
)
Note: You can give a specific db access too and give only read access or something like that.
Then we can add the role to a user by using the below command.
db.createUser(
{ user: "gokul",
pwd: "gokul123",
roles:[{role: "customROle" , db:"admin"}]})
Related
What would be the configuration/command for creating a role which can be applied to a user in MongoDB so that the user is unable to drop a collection?
Check the mongoDB documentation for creating user roles and privileges.
http://docs.mongodb.org/manual/tutorial/manage-users-and-roles/
In general, for a non-admin role, only providing read access will prevent a user from dropping a collection. The code below is taken from the mongo docs and demonstrates access modifications for various collections.
use reporting
db.createUser(
{
user: "reportsUser",
pwd: "12345678",
roles: [
{ role: "read", db: "reporting" },
{ role: "read", db: "products" },
{ role: "read", db: "sales" },
{ role: "readWrite", db: "accounts" }
]
}
)
What would be the configuration/command for creating a role which can be applied to a user in MongoDB so that the user is unable to drop a collection?
Check the mongoDB documentation for creating user roles and privileges.
http://docs.mongodb.org/manual/tutorial/manage-users-and-roles/
In general, for a non-admin role, only providing read access will prevent a user from dropping a collection. The code below is taken from the mongo docs and demonstrates access modifications for various collections.
use reporting
db.createUser(
{
user: "reportsUser",
pwd: "12345678",
roles: [
{ role: "read", db: "reporting" },
{ role: "read", db: "products" },
{ role: "read", db: "sales" },
{ role: "readWrite", db: "accounts" }
]
}
)
Created a MongoDB user with readWrite access to a collection. But I don't want to give dropCollection access right to that user. How can I implement that.
Thanks.
You can define your custom role for your purpose.
You can also extend existing roles, by inheriting with the admin.system.roles.roles field of your custom role.
Here is an example custom role
{
role: "YourRole",
db: "YourDatabase",
privileges:
[
{
resource: {db: "YourDatabase", collection: "OneOfCollections"},
actions: ["find", "insert", "update", "remove", "createIndex" ...]
},
{
resource: {db: "YourDatabase", collection: "AnotherCollection"},
actions: ["find", "insert", "update", "remove", "createIndex" ...]
},
.
.
.
],
roles:
[
{ role: "RoleYouWantToInherit", db: "TheDatabaseRoleIsDefinedFor" },
...
]
}
#n9code.
Running following query on admin collection gives an error.
db.runCommand({
createRole:"mynew",
priviliges : [..],
roles: [
{ role: "read", db: "admin" }
],
writeConcern: { w: "majority" , wtimeout: 5000 }
})
showing "error msg:no such cmd creareRole"
First I tried db.eval() for my local mogodb server.It is working fine.I used this example
Then I tried the same thing with MongoLab.But I got this error message.
The error say not authorized to execute command.Can you explain why this error message.thanks
Eval is a powerfull, dangerous and deprecated action that mLab don't give.
In a local mongo db you should create a role:
use admin
db.createRole(
{
role: "dangerEval",
privileges : [
{ resource: {anyResource: true }, actions : ["anyAction"] },
// or this for grant anyAction only on a single db:
{ resource: {db: "myDb", collection: "" }, actions: [ "anyAction" ] }
],
roles: []
}
)
Then you can assign this role to a user:
db.createUser({
user: "temporaneyEvalUser",
pwd: "psw",
roles: [ { role: "dangerEval", db: "myDb" } ]
});
So you have to choose another way to archive your target or change mongo installation.
I want each MongoDB [sub] database to have access to a specific database (central); as well as access to query anything within their own database/namespace.
How do I set this up? - I am using mongoengine BTW.
You can use collection level authentication as outlined here: http://docs.mongodb.org/manual/core/authentication/
Specifically this section of the authentication manual:
http://docs.mongodb.org/manual/reference/system-roles-collection/#a-user-defined-role-specifies-privileges
You can set permissions with documents:
{
_id: "myApp.appUser",
role: "appUser",
db: "myApp",
privileges: [
{ resource: { db: "myApp", collection: "data" },
actions: [ "insert", "update", "remove", "compact" ] },
{ resource: { db: "myApp", collection: "system.indexes" },
actions: [ "find" ] }
]
}