Ubuntu MongoDB LDAP配置

Ubuntu LDAP 配置可以参考另一篇文章 Ubuntu 下LDPA服务搭建配置

在Ubuntu上安装MongoDB

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6

Ubuntu 12.04
echo "deb [ arch=amd64 ] http://repo.mongodb.com/apt/ubuntu precise/mongodb-enterprise/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list

Ubuntu 14.04
echo "deb [ arch=amd64 ] http://repo.mongodb.com/apt/ubuntu trusty/mongodb-enterprise/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list

Ubuntu 16.04
echo "deb [ arch=amd64,arm64,ppc64el,s390x ] http://repo.mongodb.com/apt/ubuntu xenial/mongodb-enterprise/3.4 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-enterprise.list

sudo apt-get update
sudo apt-get install -y mongodb-enterprise
sudo service mongod start

MongoDB 的log文件默认在 /var/log/mongodb
MongoDB的data文件默认在 /var/lib/mongodb

安装依赖

sudo apt-get install sasl2-bin

配置mongoDB

修改 /etc/default/saslauthd 文件，改成下面的值：
MECHANISMS="ldap"
START=yes

然后启动saslauthd :

/etc/init.d/saslauthd  start

可以通过命令 ps wax | grep saslauthd 查看saslauthd 服务是否启动

更改/etc 下的 saslauthd.conf 文件，如果没有这个文件，就创建一个。加入下面的内容

ldap_servers: ldap://localhost:389
ldap_search_base: ou=people,dc=example,dc=com
ldap_filter: (uid=%u)

好了，我们现在来测试下能否通过用户名和密码连接上LDAP

先用错误的密码：
testsaslauthd -u user1 -p testpassword -f /var/run/saslauthd/mux
0: NO "authentication failed"

然后试试正确的密码：
testsaslauthd -u user1 -p user1 -f /var/run/saslauthd/mux
0: OK "Success."

给MongoDB增加一个LDAP用户,比如：

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service mongod start
mongod
用第三方管理工具(Robo）或者mongo终端执行下面命令：

db.getSiblingDB("$external").createUser(
    {
      user : "user1",
      roles: [ { role: "read", db: "kundatabase" } ]
    }
)

关闭mongo服务，ctrl+c ,然后重新已LDAP认证方式启动：

mongod --auth --setParameter saslauthdPath=/var/run/saslauthd/mux --setParameter authenticationMechanisms=PLAIN

在mongoDB验证LDAP 用户名和密码：

db.getSiblingDB("$external").auth(
   {
     mechanism: "PLAIN",
     user: "user1",
     pwd:  "user1",
     digestPassword: false
   }
)

另外，如果想通过JAVA以LDAP 认证的方式连接MongoDB：

       
       MongoCredential credential2 = MongoCredential.createPlainCredential("user1", "$external", "user1".toCharArray());
       MongoClient  mongoClient2 = new MongoClient(new ServerAddress("mo-xxxx.mo.xxx.xxx", 27017),
               Arrays.asList(credential2));

由于mongodb 会自动启一个demo thread 来捕获异常，我们要捕获连接异常可以用下面的方式：

   /**
    * Since the mongoclient will not throw an exception when connection failed. We need check the the connection after create a mongoclient
    * @param mongoClient
    * @param databaseName if not null ,then validate the connection to this database ,otherwise ,validate the connection to the admin database
    * @throws AdapterException
    */
   private static void testMongoClient(MongoClient mongoClient , String databaseName)
           throws AdapterException
   {
       try
       {
           if(databaseName != null || databaseName.isEmpty()){
               
               MongoDatabase database = mongoClient.getDatabase(databaseName);
               
               MongoIterable<String> collections = database.listCollectionNames();
               
               //if the authentication failed, will throw an exception here
               collections.iterator();
           }else{
               MongoIterable<String> databases = mongoClient.listDatabaseNames();
               if (null == databases || databases.first() == null)
               {
                   throw new AdapterException(
                           "Can not connect to MongoDB ,please check the remote source properties");
               }
           }
       }
       catch (Exception e)
       {
           throw new AdapterException(
                   "Can not connect to MongoDB ,please check the remote source properties: " + e.getMessage());
       }
   }

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