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起HA的步骤是什么
其实cascading模式下资源组的动作还受到以下两个参数的影响,参数设置不同,动作也不一样。需要注意:\r\n\r\nA parameter called Inactive Takeover decides which node takes the\r\ncascading resources when the nodes join the cluster for the first time. If this\r\nparameter is set to true, the first node in a group\'s resource chain to join the\r\ncluster acquires all the resources in the resource group. As successive nodes\r\njoin the resource group, the resources cascade up to any node with a higher\r\npriority that joins the cluster. If this parameter is set to false, the first node in\r\na group\'s resource chain to join the cluster acquires all the resources in the\r\nresource group only if it is the node with the highest priority for that group. If\r\nthe first node to join does not acquire the resource group, the second node in\r\nthe group\'s resource chain to join acquires the resource group, if it has a\r\nhigher priority than the node already active. As successive nodes join, the\r\nresource group cascades to the active node with the highest priority for the\r\ngroup. The default is false.\r\nA parameter called Cascading Without Fallback (CWOF) is an attribute of\r\ncascading resource groups that defines its fallback behavior. (this is a new\r\nfeature in HACMP Version 4.4.1). When this flag is set to TRUE, a cascading\r\nresource group will not fallback to a higher priority node as it joins or\r\nreintegrates into the cluster. A cascading group with CWOF set to FALSE will\r\nexhibit fallback behavior. |
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