Connecting to a Cluster Instance Using Mongo Shell (Public Network)

For details about how to install a MongoDB client, see How Can I Install a MongoDB Client?

The following describes how to upload the certificate to a Linux and Windows ECS:

• In Linux, run the following command:
  scp<IDENTITY_FILE><REMOTE_USER>@<REMOTE_ADDRESS>:<REMOTE_DIR>

  

  • IDENTITY_FILE is the directory where the root certificate resides. The file access permission is 600.
  • REMOTE_USER is the ECS OS user.
  • REMOTE_ADDRESS is the ECS address.
  • REMOTE_DIR is the directory of the ECS to which the root certificate is uploaded.
• In Windows, upload the root certificate using a remote connection tool.

Method 1: Using a public network connection address

Example command:

./mongo <Public network connection address> --ssl --sslCAFile <FILE_PATH> --sslAllowInvalidHostnames

Parameter description:

• Public Network Connection Address: On the Instances page, click the instance to switch to the Basic Information page. In the navigation pane on the left, choose Connections. On the displayed page, click the Public Connection tab. In the Address area, obtain the instance connection address from the Public Network Connection Address field.
  Figure 3 Obtaining the public network connection address
  

  The format of the public connection address is as follows. The database username rwuser and authentication database admin cannot be changed.

  mongodb://rwuser:<password>@192.168.xx.xx:8635/test?authSource=admin

  Pay attention to the following parameters in the public connection address:

  Table 1 Parameter description

  Parameter	Description
  rwuser	Account name, that is, the database username.
  <password>	Password for the database account. Replace it with the actual password. If the password contains at signs (@), exclamation marks (!), dollar signs ($), or percent signs (%), replace them with hexadecimal URL codes (ASCII) %40, %21, %24, and %25 respectively. For example, if the password is ****@%***!$, the corresponding URL code is ****%40%25***%21%24.
  192.168.xx.xx:8635	EIP and port bound to the dds mongos node of the cluster instance
  test	The name of the test database. You can set this parameter based on your service requirements.
  authSource=admin	The authentication database of user rwuser must be admin. authSource=admin is fixed in the command.

• FILE_PATH is the path for storing the root certificate.
• --sslAllowInvalidHostnames: To ensure that the internal communication of the cluster does not occupy resources such as the user IP address and bandwidth, the cluster certificate is generated using the internal management IP address. --sslAllowInvalidHostnames is needed for the SSL connection through a public network.

Command example:

./mongo mongodb://rwuser:<password>@192.168.xx.xx:8635/test?authSource=admin --ssl --sslCAFile /tmp/ca.crt --sslAllowInvalidHostnames

Method 2: Connect to an instance using an EIP.

Example command:

./mongo --host <DB_HOST> --port <DB_PORT> -u <DB_USER> -p --authenticationDatabase admin --ssl --sslCAFile <FILE_PATH> --sslAllowInvalidHostnames

Parameter description:

• DB_HOST is the EIP bound to the instance to be connected.

  You can click the instance name to go to the Basic Information page. In the navigation pane on the left, choose Connections. On the Public Connection tab, obtain the EIP bound to the dds mongos node in the EIP column.

  If there are multiple dds mongos nodes, the EIP of any node can be used to connect to the instance.

  Figure 4 Obtaining an EIP
  
• DB_PORT is the port of the instance to be connected. The default port number is 8635.

  You can click the instance to go to the Basic Information page. In the navigation pane on the left, choose Connections. On the displayed page, click the Public Connection tab and obtain the port from the Database Port field in the Basic Information area.

  Figure 5 Obtaining the port
  
• DB_USER is the database user. The default value is rwuser.
• FILE_PATH is the path for storing the root certificate.
• --sslAllowInvalidHostnames: To ensure that the internal communication of the cluster does not occupy resources such as the user IP address and bandwidth, the cluster certificate is generated using the internal management IP address. --sslAllowInvalidHostnames is needed for the SSL connection through a public network.

Enter the database account password when prompted:

Enter password:

Command example:

./mongo --host 192.168.xx.xx --port 8635 -u rwuser -p --authenticationDatabase admin --ssl --sslCAFile /tmp/ca.crt --sslAllowInvalidHostnames

mongos>

Method 1: Using a public network connection address

Example command:

./mongo <Public network address>

Public Network Connection Address: You can click the instance name to go to the Basic Information page. In the navigation pane on the left, choose Connections. On the displayed page, click the Public Connection tab. In the Address area, obtain the instance connection address from the Public Network Connection Address field.

Figure 6 Obtaining the public network connection address

The format of the public connection address is as follows. The database username rwuser and authentication database admin cannot be changed.

mongodb://rwuser:<password>@192.168.xx.xx:8635/test?authSource=admin

The following table describes the required parameters in the public connection address.

Command example:

./mongo mongodb://rwuser:<password>@192.168.xx.xx:8635/test?authSource=admin

Method 2: Using an EIP

Example command:

./mongo --host <DB_HOST> --port <DB_PORT> -u <DB_USER> -p --authenticationDatabase admin

Parameter description:

• DB_HOST is the EIP bound to the instance to be connected.

  You can click the instance name to go to the Basic Information page. In the navigation pane on the left, choose Connections. On the Public Connection tab, obtain the EIP bound to the dds mongos node in the EIP column.

  If there are multiple dds mongos nodes, the EIP of any node can be used to connect to the instance.

  Figure 7 Obtaining an EIP
  
• DB_PORT is the port of the instance to be connected. The default port number is 8635.

  You can click the instance to go to the Basic Information page. In the navigation pane on the left, choose Connections. On the displayed page, click the Public Connection tab and obtain the port from the Database Port field in the Basic Information area.

  Figure 8 Obtaining the port
  
• DB_USER is the database user. The default value is rwuser.

Enter the database account password when prompted:

Enter password:

Command example:

./mongo --host 192.168.xx.xx --port 8635 -u rwuser -p --authenticationDatabase admin

mongos>