Applicable Products
- QuTS hero h5.3.0 or later
- iSCSI & Fibre Channel
Scenario
In a high-availability (HA) cluster, the two nodes synchronize all data and settings to function as a single unit, so that the passive node can immediately take over services if the active node fails. This means that if there are any iSCSI target configurations, they are identical between the two node devices.
However, if you remove the passive node from the cluster and want to use it as a standalone device, you need to change the iSCSI target configurations on the now standalone device or else conflicts will occur with the other node device.
Solution
After removing a passive node from an HA cluster, you must change all of the following settings to ensure proper functioning of the iSCSI targets on the device:
- Modify all IQNs
Each iSCSI target must have a unique IQN (iSCSI qualified name). If you do not change the iSCSI target IQNs on the standalone device, they won't be discoverable because those IQNs are already in use by the other device in the original HA cluster.Tip
To edit an iSCSI target's IQN, go to
iSCSI & Fibre Channel > iSCSI, identify the iSCSI target, and then click
> Modify.
For details, see
Editing iSCSI target settings.
- Modify all network portal bindings
After removing the passive node from an HA cluster, the device can no longer use the IP addresses of the cluster. You must manually change the network portal binding for each iSCSI target and bind them to IP addresses unique to the device.Tip
To edit an iSCSI target's network portal binding, go to
iSCSI & Fibre Channel > iSCSI Permissions, identify the iSCSI target, click
, and then go to the
Network Portal Binding tab.
For details, see
Binding an iSCSI target to an IP address.
- Change all CHAP passwords
For security reasons, all CHAP (Challenge-Handshake Authentication Protocol) passwords in an HA cluster are encrypted with the HA service. When you remove the passive node from an HA cluster, you must reset all CHAP passwords to remove the HA encryption. This includes both default and custom CHAP passwords.Tip
- To edit default iSCSI CHAP settings, go to iSCSI & Fibre Channel > Protocol Settings > Default iSCSI CHAP.
For details, see iSCSI & Fibre Channel global settings. - To edit an iSCSI target's CHAP settings, go to iSCSI & Fibre Channel > iSCSI, identify the iSCSI target, click > Modify, and then click Advanced Settings.
For details, see Editing iSCSI target settings.
Further Reading
适用产品
- QuTS hero h5.3.0 or later
- iSCSI & Fibre Channel
场景
在高可用性 (HA) 群集 中，两个节点同步所有数据和设置以作为一个单元运行，这样如果活动节点发生故障，被动节点可以立即接管服务。这意味着如果有任何 iSCSI 目标配置，它们在两个节点设备之间是相同的。
然而，如果您将被动节点从 群集 中移除并希望将其作为独立设备使用，则需要更改现在独立设备上的 iSCSI 目标配置，否则会与其他节点设备发生冲突。
解决方案
从 HA 群集 中移除被动节点后，您必须更改以下所有设置以确保设备上 iSCSI 目标的正常运行：
- 修改所有 IQN
每个 iSCSI 目标必须有一个唯一的 IQN（iSCSI 合格名称）。如果您不更改独立设备上的 iSCSI 目标 IQN，它们将无法被发现，因为这些 IQN 已被原始 HA 群集 中的其他设备使用。提示
要编辑 iSCSI 目标的 IQN，请转到
iSCSI & 光纤通道 > iSCSI，识别 iSCSI 目标，然后点击
> 修改。
详情请参见
编辑iSCSI目标设置。
- 修改所有网络门户绑定
从 HA 群集 中移除被动节点后，设备不能再使用 群集 的 IP 地址。您必须手动更改每个 iSCSI 目标的网络门户绑定，并将它们绑定到设备独有的 IP 地址。提示
要编辑 iSCSI 目标的网络门户绑定，请转到
iSCSI & 光纤通道 > iSCSI 权限，识别 iSCSI 目标，点击
，然后转到
网络门户绑定 标签。
详情请参见
将iSCSI目标绑定到IP地址。
- 更改所有CHAP密码
出于安全原因，HA 群集中的所有CHAP（挑战握手认证协议）密码都通过HA服务加密。当您从HA 群集中移除被动节点时，必须重置所有CHAP密码以移除HA加密。这包括默认和自定义CHAP密码。提示
- 要编辑默认的iSCSI CHAP设置，请转到iSCSI & 光纤通道 > 协议设置 > 默认iSCSI CHAP。
详情请参见iSCSI和光纤通道全局设置。 - 要编辑iSCSI目标的CHAP设置，请转到iSCSI & 光纤通道 > iSCSI，找到iSCSI目标，点击> 修改，然后点击高级设置。
详情请参见编辑iSCSI目标设置。
进一步阅读
