ActiveDirectory で自己管理型 SASL と LDAP を使用して認証

Specify the mechanism.

On systems that configure saslauthd with the /etc/sysconfig/saslauthd file, such as Red Hat Enterprise Linux, Fedora, CentOS, and Amazon Linux AMI, set the mechanism MECH to ldap:

MECH=ldap

On systems that configure saslauthd with the /etc/default/saslauthd file, such as Ubuntu, set the MECHANISMS option to ldap:

MECHANISMS="ldap"

Adjust caching behavior.

On certain Linux distributions, saslauthd starts with the caching of authentication credentials enabled. Until restarted or until the cache expires, saslauthd will not contact the LDAP server to re-authenticate users in its authentication cache. This allows saslauthd to successfully authenticate users in its cache, even in the LDAP server is down or if the cached users' credentials are revoked.

To set the expiration time (in seconds) for the authentication cache, see the -t option of saslauthd.

Configure LDAP Options with ActiveDirectory.

If the saslauthd.conf file does not exist, create it. The saslauthd.conf file usually resides in the /etc folder. If specifying a different file path, see the -O option of saslauthd.

To use with ActiveDirectory, start saslauthd with the following configuration options set in the saslauthd.conf file:

ldap_servers: <ldap uri>
ldap_use_sasl: yes
ldap_mech: DIGEST-MD5
ldap_auth_method: fastbind

For the <ldap uri>, specify the uri of the ldap server. For example, ldap_servers: ldaps://ad.example.net.

For more information on saslauthd configuration, see http://www.openldap.org/doc/admin24/guide.html#Configuringsaslauthd.

Test the saslauthd configuration.

使用 testsaslauthd utility to test the saslauthd configuration. For example:

testsaslauthd -u testuser -p testpassword -f /var/run/saslauthd/mux

• 0: OK "Success" indicates successful authentication.

• 0: NO "authentication failed" indicates a username, password, or configuration error.

Modify the file path with respect to the location of the saslauthd directory on the host operating system.

Add user to MongoDB for authentication.

Add the user to the $external database in MongoDB. To specify the user's privileges, assign roles to the user.

$external認証ユーザー（Kerberos、LDAP、または X.509 ユーザー）でクライアント セッションと因果整合性の保証を使用するには、ユーザー名を 10k バイトより大きくすることはできません。

For example, the following adds a user with read-only access to the records database.

db.getSiblingDB("$external").createUser(
    {
      user : <username>,
      roles: [ { role: "read", db: "records" } ]
    }
)

Add additional principals as needed. For more information about creating and managing users, see ユーザー管理コマンド.

Configure MongoDB server.

To configure the MongoDB server to use the saslauthd instance for proxy authentication, include the following options when starting mongod:

• --auth command line option or security.authorization setting,

• authenticationMechanisms parameter set to PLAIN, and

• saslauthdPath parameter set to the path to the Unix-domain Socket of the saslauthd instance.

  重要

  security.sasl.saslauthdSocketPathまたは--setParameter saslauthdPathに指定されたsaslauthd Unix ドメイン ソケット ファイルの親ディレクトリには、次のいずれかの読み取りおよび実行（ r-x ）権限が付与されている必要があります。

  • mongodまたはmongosを起動するユーザー、または

  • そのユーザーが属するグループ。

  mongodまたはmongosは、 saslauthdディレクトリとその内容に対する指定された権限がなければ、 saslauthd経由で正常に認証できません。

If you use the authorization option to enforce authentication, you will need privileges to create a user.

mongod --auth --setParameter saslauthdPath=/<some>/<path>/saslauthd/mux --setParameter authenticationMechanisms=PLAIN

Or if using a YAML format configuration file, specify the following settings in the file:

security:
   authorization: enabled
setParameter:
   saslauthdPath: /<some>/<path>/saslauthd/mux
   authenticationMechanisms: PLAIN

Or, if using the older configuration file format:

auth=true
setParameter=saslauthdPath=/<some>/<path>/saslauthd/mux
setParameter=authenticationMechanisms=PLAIN

mongod --auth --setParameter saslauthdPath="" --setParameter authenticationMechanisms=PLAIN

Or if using a YAML format configuration file, specify the following settings in the file:

security:
   authorization: enabled
setParameter:
   saslauthdPath: ""
   authenticationMechanisms: PLAIN

Or, if using the older configuration file format:

auth=true
setParameter=saslauthdPath=""
setParameter=authenticationMechanisms=PLAIN

構成に必要な追加オプションを含めます。 たとえば、リモート クライアントを使用して配置に接続する場合や、配置ノードを異なるホスト上で実行する場合は、 net.bindIp設定を指定します。

Authenticate the user in mongosh.

You can authenticate from the command line during connection, or connect first and then authenticate using db.auth() method.

mongosh --host <host> --authenticationMechanism PLAIN --authenticationDatabase '$external' -u <user> -p

db.getSiblingDB("$external").auth(
   {
     mechanism: "PLAIN",
     user: <username>,
     pwd:  passwordPrompt() // or cleartext password
   }
)

The server forwards the password in plain text. In general, use only on a trusted channel (VPN, TLS/SSL, trusted wired network). See Considerations.