使用heartbeat做双机热备笔记
September 20th, 2007
作者: Jeffrey
出处: http://blog.zhangjianfeng.com/?p=638
我用到的集群系统主要就2种:
高可用(High Availability)HA集群, 使用Heartbeat实现;也会称为”双机热备”, “双机互备”, “双机”。
阅读全文——共1262字
Tag Archive for 'lvs'
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LVS安装笔记
May 16th, 2006
作者: Jeffrey
出处:http://blog.zhangjianfeng.com/?p=310
1.升级内核至最新,我安装的是2.6.16.16
2.http://www.linuxvirtualserver.org/software/下载对应内核的ipvsadm-1.24-6源程序,ipvsadm-1.24-6.src.rpm,rpmbuild –rebuild ipvsadm-1.24-6.src.rpmrpm -ivh /usr/src/redhat/RPMS/i386/ipvsadm-1.24-6.i386.rpm
阅读全文——共9680字
LVS的配置详解配置
March 31st, 2006
Red Hat Cluster Manager安装操作系统，选择组件advance server，安装LVS部分。两台主机，主机名为haha和hehe主机haha的本地ip地址为net0:192.168.2.11，net1:192.168.2.14主机hehe的本地ip地址为net0:192.168.2.12，net1:192.168.2.16（主机网络连线只能用直连线进行连接，不能用交叉线连接，否则双机不能进行监控）修改/etc/hosts文件，封掉localhost行的内容，写入本地主机、对方主机和虚拟主机相应的ip地址和主机名：（两台主机配置相同）192.168.2.11 haha192.168.2.12 hehe192.168.2.13 xixi进入/etc/sysconfig/rawdevices文件，增加两行内容：（两台主机设置相同）/dev/raw/raw1 /dev/sdb1/dev/raw/raw2 /dev/sdb2以上两行是LVS需要的两个裸设备作为系统监控使用，每个裸设备的空间不能小于10M。当然需要fdisk建立两个两个相应的设备。然后从起主机，进入/sbin下，./cluconfig进行cluster的配置：Red Hat Cluster Manager Configuration Utility (running on haha) –haha为本地主机名Enter cluster name [Red Hat Cluster Manager]:xixi –xixi为虚拟主机名Enter IP address for cluster alias [NONE]:192.168.2.13 –地址为虚拟地址——————————–Information for Cluster Member 0——————————–Enter name of cluster member [haha]: –本地成员，回车即可Enter number of heartbeat channels (minimum = 1) [1]: 2 –两块网卡心跳线（也可串口心跳）Channel type: net or serial [net]: –第一块网卡做心跳Enter hostname of the cluster member on heartbeat channel 0 [haha]: –心跳线成员名称Channel type: net or serial [net]: –第二块网卡做心跳线Enter hostname of the cluster member on heartbeat channel 1:hehe –另外一个成员名称Information about Quorum PartitionsEnter Primary Quorum Partition [/dev/raw/raw1]:Enter Shadow Quorum Partition [/dev/raw/raw2]:Information About the Power Switch That Power Cycles Member ‘haha’Choose one of the following power switches:o NONEo RPS10o BAYTECHo APCSERIALo APCMASTERo WTI_NPSo SW_WATCHDOGPower switch [NONE]:——————————–Information for Cluster Member 1——————————–Enter name of cluster member:hehe –对方成员名Enter hostname of the cluster member on heartbeat channel 0: heheEnter hostname of the cluster member on heartbeat channel 1: hahaInformation about Quorum PartitionsEnter Primary Quorum Partition [/dev/raw/raw1]:Enter Shadow Quorum Partition [/dev/raw/raw2]:Information About the Power Switch That Power Cycles Member ‘hehe’Choose one of the following power switches:o NONEo RPS10o BAYTECHo APCSERIALo APCMASTERo WTI_NPSo SW_WATCHDOGPower switch [NONE]:Save the cluster member information? yes/no [yes]: –对配置信息进行保存Save the cluster member information? yes/no [yes]:Writing to configuration file…doneConfiguration information has been saved to /etc/cluster.conf.—————————-Setting up Quorum Partitions—————————-Running cludiskutil -I to initialize the quorum partitions: doneSaving configuration information to quorum partitions: doneDo you wish to allow remote monitoring of the cluster? yes/no [yes]: –是否允许远程主机进行cluster监视访问Configuration on this member is complete.To configure the next member, invoke the following command on that system:# /sbin/cluconfig –init=/dev/raw/raw1Refer to the Red Hat Cluster Manager Installation and Administration Guidefor details.本地主机配置完成进入对方主机的/sbin目录，执行cluconfig –init=/dev/raw/raw1显示信息如下：Information about Channel 0/sbin/cluconfig: [: haha: unary operator expectedLooking for host haha (may take a few seconds)…Information about Channel 1/sbin/cluconfig: [: hehe: unary operator expectedLooking for host hehe (may take a few seconds)…Information about Quorum PartitionsInformation About the Power Switch That Power Cycles Member ‘haha’Note: Operating a cluster without a remote power switch does not prmaximum data integrity guarantees.——————————–Information for Cluster Member 1——————————–/sbin/cluconfig: [: hehe: unary operator expectedLooking for host hehe (may take a few seconds)…Information about Channel 0/sbin/cluconfig: [: hehe: unary operator expectedLooking for host hehe (may take a few seconds)…Information about Channel 1/sbin/cluconfig: [: haha: unary operator expectedLooking for host haha (may take a few seconds)…Hostname does not map to any interface. Keep your selection? [yes]:Information about Quorum PartitionsInformation About the Power Switch That Power Cycles Member ‘hehe’Note: Operating a cluster without a remote power switch does not providemaximum data integrity guarantees.Press <Return> to continue. –按回车继续Cluster name: xixiCluster alias IP address: 192.168.2.13——————–Member 0 Information——————–Name: hahaPrimary quorum partition: /dev/raw/raw1Shadow quorum partition: /dev/raw/raw2Heartbeat channels: 2Channel type: net, Name: hahaChannel type: net, Name: hehePower switch IP address or hostname: hahaIdentifier on power controller for member haha: un——————–Member 1 Information——————–Name: hehePrimary quorum partition: /dev/raw/raw1Shadow quorum partition: /dev/raw/raw2Heartbeat channels: 2Channel type: net, Name: heheChannel type: net, Name: hahaPower switch IP address or hostname: heheIdentifier on power controller for member hehe: un————————–Power Switch 0 Information————————–Power switch IP address or hostname: hahaType: NONELogin or port: unusedPassword: unused————————–Power Switch 1 Information————————–Power switch IP address or hostname: heheType: NONELogin or port: unusedPassword: unusedSave the cluster member information? yes/no [yes]: –是否进行保存Writing to configuration file…doneConfiguration information has been saved to /etc/cluster.conf.Saving configuration information to quorum partitions: doneDo you wish to allow remote monitoring of the cluster? yes/no [yes]:—————————————————————-Configuration on this member is complete.Execute “/sbin/service cluster start” to start the cluster software.这时，双机软件基本配置已经完成，在两台主机上分别运行service cluster start启动服务通过cluadmin进行管理，如下所示：cluadmin> cluster statusCluster Status Monitor (xixi) 11:16:11Cluster alias: xixi========================= M e m b e r S t a t u s ==========================Member Status Node Id Power Switch————– ———- ———- ————haha Up 0 Goodhehe Up 1 Good========================= H e a r t b e a t S t a t u s ====================Name Type Status—————————— ———- ————haha <–> hehe network ONLINE========================= S e r v i c e S t a t u s ========================Last Monitor RestartService Status Owner Transition Interval Count————– ——– ————– —————- ——– ——-cluadmin>通过状态可以看到双机状态正常，但未加入任何服务，通过help可以看到帮助：cluadmin> helpcluster service apropos clear help version exit quitcluadmin> service add –加入一个服务Service name: disk –服务名称Preferred member [None]:haha –首选成员User script (e.g., /usr/foo/script or None) [None]: –用户脚本Status check interval [0]: –状态检测间隔Do you want to add an IP address to the service (yes/no/?) [no]:Do you want to add a disk device to the service (yes/no/?) [no]: yes –加disk设备Disk Device InformationDevice special file (e.g., /dev/sdb4): /dev/sdb3 –设备名称Filesystem type (e.g., ext2, or ext3): ext2 –文件系统类型Mount point (e.g., /usr/mnt/service1) [None]: /mnt –mount点Mount options (e.g., rw,nosuid,sync):Forced unmount support (yes/no/?) [yes]: –是否强制unmountWould you like to allow NFS access to this filesystem (yes/no/?) [no]:Would you like to share to Windows clients (yes/no/?) [no]:Do you want to (a)dd, (m)odify, (d)elete or (s)how DEVICES, or are you (f)inished adding DEVICES [f]:Add disk service as shown? (yes/no/?) yes –是否加入服务0) haha1) hehec) cancelChoose member to start service on: 0 –在首选哪台主机启动Added disk. –加入服务成功
