双机热备份常用命令:

MC/Lock Manager (Multi-Computer/Lock Manager) 是惠普公司推出专门用 来保护关键业务应用免遭软、硬件故障影响的特殊应用软件。 使用MC/Lock Manager，多个节点(系统)被组织成一个企业群集，为局域网(LAN) 上的客户机提供高可用性的服务。 MC/Lock.Manager监控程序监控每一个节点的状态，并且对出现的故障很快 做出反应，使对应用程序的影响减小到最低。Abbreviations: CN = cluster_name NN = node_name PN = package_nameExplainations: ... = multiple occurences | = OR [descriptor] = optional1. 如何手动启动MC/Lock Manager？______________________________________________________________________________Start Lock Manager daemons and form a new cluster#cmruncl [-f] [-v] [-n NN...][-f] Force cluster startup without warning message[-v] Verbose output[-n ] specific name(s) of node(s) to2. 单点启动后如何加入另一个节点？______________________________________________________________________________Start Lock Manager daemon on node(s) and join a clustercmrunnode [-v] [NN...][-v] Verbose output3. 如何实现节点切换？______________________________________________________________________________切换分两种：本地切换 ( Local Switch ) 和 切换 ( Switch ) 当主节点出现网卡故障 ( MAC address or Hardware State Down ) 时，首 先会进行本地切换，备份网卡开始工作；如果此时备份网卡也有故障， 则系统会进行切换，备份节点接管系统工作。 可以手工模拟这些故障以进行故障诊断或检测。4. 如何监测 Cluster 运行状态？______________________________________________________________________________view information about the current Lock Manger clustercmviewcl [-v] [-n NN]... [-p PN]... [-l {package|cluster|node}][-v] Verbose output[-n] View information only about the specific node_name(s).[-p] package_name... View information only about the specific package_name(s).[-l] pkg|clus|node Display only package, cluster or node specific information.5. 如何停止 Cluster 运行？______________________________________________________________________________halt Lock Manager cluster daemonscmhaltcl [-f] [-v][-f] Force the cluster to shutdown even if packages are currently running.[-v] Verbose output6. 如何停止运行某个节点而 Cluster 在其它节点继续运行？______________________________________________________________________________halt Lock Manager daemon on node(s) and leave the clustercmhaltnode [-f] [-v] [NN...][-f] Force the node to halt even if there are packages running on it.[-v] Verbose output7. 如何在 Running Cluster 中运行某一个包？______________________________________________________________________________run a Lock Manager packagecmrunpkg [-n NN] [-v] PN...[-n ] Act on a specific node. [-v] Verbose output8. 如何停止一个运行中的包？______________________________________________________________________________halt a Lock Manager packagecmhaltpkg [-n NN] [-v] PN...[-n ] Act on a specific node.[-v] Verbose output9. 如何改变一个包的切换属性？______________________________________________________________________________enable or disable switching attributes for a Lock Manager packagecmmodpkg [-v] [-n NN]... {-e|-d} PN...[-v] Verbose output[-n ] Modify attributes on specific node(s) - else globally mod.-e enable-d disable
PN - package(s) whose switching attributes are changed