起HA的步骤是什么

uniconch

原帖由 "yanbing" 发表：


哥们，你刚好说反了。

不过仔细看看，好像也还不是说反了这么简单，

还是找些hacmp的资料看看吧！下面抄一段：

rotating方式与cascading方式所不同的是，采用rotating方式的资源组不是固定地分配给某个n..........

老大，我怎么就没看过有这种说法？

但我做过的实验里，一个资源组，两个节点，优先级高的节点重新加入cluster之后，的确会把原来的资源组接管过去阿

炸鸡

那肯定是CASCADING。

johnsons

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：

A parameter called Inactive Takeover decides which node takes the
cascading resources when the nodes join the cluster for the first time. If this
parameter is set to true, the first node in a group's resource chain to join the
cluster acquires all the resources in the resource group. As successive nodes
join the resource group, the resources cascade up to any node with a higher
priority that joins the cluster. If this parameter is set to false, the first node in
a group's resource chain to join the cluster acquires all the resources in the
resource group only if it is the node with the highest priority for that group. If
the first node to join does not acquire the resource group, the second node in
the group's resource chain to join acquires the resource group, if it has a
higher priority than the node already active. As successive nodes join, the
resource group cascades to the active node with the highest priority for the
group. The default is false.
A parameter called Cascading Without Fallback (CWOF) is an attribute of
cascading resource groups that defines its fallback behavior. (this is a new
feature in HACMP Version 4.4.1). When this flag is set to TRUE, a cascading
resource group will not fallback to a higher priority node as it joins or
reintegrates into the cluster. A cascading group with CWOF set to FALSE will
exhibit fallback behavior.

大猫

我插一句,hacmp 4.4.1以后才有参数Cascading Without Fallback (CWOF)

chfhy

各位问一下，我以前没用过hacmp，用的是trucluster，trucluster可以并行，hacmp可以吗？

larryh

可以。好多其他的也可以，这种大的功能不可能有那个厂商产品独步全球。

zdygk

并行有层次的。大多数软件只是结合应用做原始设备的并行；只有trucluster是可以做到文件系统，FS级别的share 和并行的。还有veritas

larryh

IBM的GPFS听说过吗?
并行文件系统本身就没什么大用。

hp_ux

楼上，ha不可以并行。

炸鸡

hp_ux兄所发表的意见好象都对IBM有一点点偏见。