39_03_Linux集群系列之十三——高可用集群之corosync基础概念及安装配置(笔记)

A=MTBF/(MTBF+MTTR)

Design failure
Random failure
infant Mortality
wear out

User better components
Preemptively replace hardware prior to wear out

Peer review of all code
Simple design
Compact code foot print

heartbeat:
RHEL6.X RHCS:corosync
RHEL5.X RHCS:openais,cman,rgmanager

Corosync执行高可用应用程序的通信系统

corosync:Messaging layer
openais:
www.corosync.org

Diagnostics and failure analysis

corosync

Ha-aware
crm(pacemaker)

corosync/heartbeat V3)

hawk

corosync-->pacemaker
SUSE Linux Enterprise Server:hawk,webGUI
LCMC:linux Cluster management Console

RHCS:conga(luci/ricci)
webGUI
keepalived:VRRP,2节点

rpm,sources

resouce-agents

pacemaker,corosync
heartbeat

ldirectord

cluster-glue

pcs:

corosync:
1、时间同步
2、主机名
3、SSH

ssh 172.16.100.6

#date
#ntpdate 172.16.0.1
#date
#ssh node1 'date'

#clear

#lftp 172.16.0.1/pub
#cd Sources/corosync/
#ls
#mget cluster-glue-* corosync-1.2.7-1.1.el5.i386.rpm

#mv openailslib-1.1.3-1.6.el5.i386.rpm /tmp
#ls
#scp *.rpm node1:/root

#ls /etc/yum.repos.d/
#wget ftp://172.16.0.1/pub/gls/server.repo -0 /etc/yum.repos.d/server.repo

#yum --nogpgcheck localinstall *.rpm

#yum -y --nogpgcheck localinstall *.rpm

#rpm -ql corosync

#cd /etc/corosync/
#ls

#cp corosync.conf.example corosync.conf

threads

fileline
#corosync-keygen
#ll
#file authkey
#scp -p authkey corosync.conf node2:/etc/corosync/
#mkdir /var/log/cluster
#ssh node2 'mkdir /var/log/cluster'

#service corosync start

#ssh node2 '/etc/init.d/corosync start'
#grep -e "Corosync Cluster Engine" -e "configuration file" /var/log/cluster/corosync.log

#grep TOTEM /var/log/cluster/corosync.log
#grep ERROR: /var/log/cluter/corosync.log
#grep pcmk_startup /var/log/cluster/corosync.log

#crm_mon