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编辑副本集

Overview

您可以直接在 Cloud Manager 控制台中添加、删除和重新配置副本集中的节点。

注意

Cloud Manager restarts a node in a replica set or sharded cluster when you change configuraton file options for the MongoDB process running on the node. The following options trigger a restart only for the specified changes:

security.clusterAuthMode: Changing the value from keyfile to sendKeyFile triggers a restart. All other changes to this option do not.
net.tls.mode: Changing the value from disabled to allowTLS triggers a restart. All other changes to this option do not.

A restarted node triggers an election if the node was the primary. In addition, modifying the member settings of the current primary may trigger an election.

步骤

添加副本集成员

您必须有一台现有服务器来部署新的副本集成员。要将成员添加到现有副本集，并增加副本集的大小：

在MongoDB Cloud Manager中，转到项目的 Processes 页面。

如果尚未显示，请从导航栏上的 Organizations 菜单中选择包含所需项目的组织。
如果尚未显示，请从导航栏的Projects菜单中选择所需的项目。
在侧边栏中，单击 Database 标题下的 Processes。

The Processes page displays.

选择部署的Clusters 视图。

在具有副本集的卡片上，单击Modify 。

在 Member Configuration 中，单击 Add a Mongod。

在 Hostname 中，选择要添加为副本集新成员的托管。

如果主机未出现在Hostname列表中，请使用以下步骤添加主机：

在 Hostname 中，选择 New Server。
如果尚未将主机添加到项目中，则不会显示Hostname列表。单击Install Agent 。
在Add New Server对话框中，选择您的操作系统并单击Next 。
按照说明在新主机上安装MongoDB 助手。

注意

When adding a new member to a replica set, set Build Indexes to True if you want the member's mongod to build indexes. You cannot change this value after the Automation adds the new member to the replica set. To learn more, see members[n].buildIndexes.

警告

If your replica set uses TLS, you must create and install the necessary TLS certificates on the new replica set member host first. Then, set the TLS settings for the mongod or mongos process for the new replica set member on that host. Automation does not create and install the certificates and configure these settings automatically. If you do not configure TLS on the new member, you cannot add it to the existing TLS-enabled replica set. To learn how to enable TLS on the new replica set member, see Enable TLS for a Deployment.

在Replica Set Configuration部分中，为新成员填写以下字段：

Auth Schema Version	选择用于存储部署的用户数据的模式。有关更多信息，请参阅升级到 SCRAM 。
Feature Compatibility （可选）	Select the `feature compatibility set`.
Version	为您的副本集选择 MongoDB 版本。
Data Directory	指定`mongod`进程将存储数据文件的目录的完整路径。重要提示：确保新成员的数据目录不包含数据。新成员将从现有成员复制数据。 If the new member is in a recovering state, it must exit and become a secondary before MongoDB can copy all data as part of the replication process. This process doesn't require administrator intervention.
Log File	指定新主机上`mongod`进程的日志文件的位置和名称。

单击 Save（保存并关闭）。

单击Review & Deploy 查看更改。

单击Confirm & Deploy 以部署更改。

否则，请单击 Cancel，您可以进行其他更改。

重要

To avoid disrupting majority writes, new members are now added to replica sets as priority=0, votes=0 until they reach secondary state, after which Cloud Manager automatically updates the configuration to match the priority and votes value specified in the deployment.