HI i am use haproxy to do that , this is my haproxy config file , you need edit "Global Settings" in "host" value change to your haproxy host IP
#--------------------------------------------------------------------- # Example configuration for a possible web application. See the # full configuration options online. # # http://haproxy.1wt.eu/download/1.4/doc/configuration.txt # #--------------------------------------------------------------------- #--------------------------------------------------------------------- # Global settings #--------------------------------------------------------------------- global # to have these messages end up in /var/log/haproxy.log you will # need to: # # 1) configure syslog to accept network log events. This is done # by adding the '-r' option to the SYSLOGD_OPTIONS in # /etc/sysconfig/syslog # # 2) configure local2 events to go to the /var/log/haproxy.log # file. A line like the following can be added to # /etc/sysconfig/syslog # # local2.* /var/log/haproxy.log # log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon # turn on stats unix socket stats socket /var/lib/haproxy/stats defaults log global maxconn 2000 contimeout 5000 clitimeout 30000 srvtimeout 30000 retries 5 # when connect 3 times cant connect it it is bad listen cloud-agent mode tcp bind :8250 option dontlognull balance source option abortonclose maxconn 400 balance roundrobin server csm-01 10.40.0.10:8250 check port 8250 server csm-02 10.40.0.201:8250 check port 8250 listen servers bind *:80 option httpchk OPTIONS /client log global mode http option httplog option forwardfor balance roundrobin cookie JSESSIONID insert preserve server msg01 10.40.0.10:8080 cookie JSESSIONID_SERVER_1 check inter 50000 server msg02 10.40.0.201:8080 cookie JSESSIONID_SERVER_2 check inter 50000 listen admin_stats bind 0.0.0.0:1080 mode http stats auth admin:123456 log 127.0.0.1 local0 err stats refresh 30s stats uri /admin?stats 2013/5/27 Steven Liang <[email protected]> > Hi Geoff, > > Can I use LVS to implement load balancer. If so, what ports should I use? > > Regards, > Steven > > > On 05/27/2013 03:24 AM, Geoff Higginbottom wrote: > > Nehal, > > I would approach this in a slightly different way. > > Set up your new management server but as a 2nd node rather than a > replacement. To do so you need to put a load balancer in front of both of > them and update the global setting 'host' with the new load balanced IP. > > After updating the 'host' setting and restarting the 'cloud-management' > service on each, you will need to restart all system VMs so they use this new > setting. > > You should then add a 2nd MySQL server, initially as a slave and allow it to > replicate, then 'fail over' making the slave the new master. The docs detail > how to deploy multiple MySQL servers and how to fail over. > > Whilst this may seem like more work, we always deploy with at least two > Management Servers and two MySQL servers as this provides better resilience > makes performing planned maintenance much easier. > > Regards > > Geoff Higginbottom > CTO / Cloud Architect > > > D: +44(0)20 3603 0542<tel:+442036030542> | S: +44(0)20 3603 > 0540<tel:+442036030540> | M: +44(0)7968161581<tel:+447968161581> > [email protected]<mailto:[email protected]> > <[email protected]> | www.shapeblue.com > > ShapeBlue Ltd, 53 Chandos Place, Covent Garden, London, WC2N 4HS > > > > On 27 May 2013, at 06:25, "Nehal J. Wani" > <[email protected]<mailto:[email protected]> > <[email protected]>> wrote: > > Suppose I have only one management server and I want to take it down for > maintenance. What is the procedure to deploy the management server on a > different machine? > > I tried the following on the new machine: > > (i) Completed all the steps from Chapter 2 in the > Apache_CloudStack-4.0.2-Quick_Install_Guide-en-US.pdf > > (ii) Copied all files from /etc/cloud, /usr/lib64/cloud, /var/lib/cloud > from the old machine to the new one. > > (iii) Took dumps of the databases cloud, cloudbridge, cloud_usage from old > machine and then put them in the new machine. > > (iv) Changed the ip in /etc/cloud/agent/agent.properties and > /etc/cloud/management/db.properties from 10.3.3.57 to 10.3.3.56 > > > But i still get the error > > 2013-05-27 10:51:16,581 WARN [agent.manager.ClusteredAgentManagerImpl] > (Job-Executor-2:job-93) Unable to connect to peer management server: > 90520731198133, ip: 10.3.3.57 due to Connection refused > java.net.ConnectException: Connection refused > at sun.nio.ch.Net.connect(Native Method) > at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:525) > at java.nio.channels.SocketChannel.open(SocketChannel.java:164) > at > com.cloud.agent.manager.ClusteredAgentManagerImpl.connectToPeer(ClusteredAgentManagerImpl.java:442) > at > com.cloud.agent.manager.ClusteredAgentAttache.send(ClusteredAgentAttache.java:172) > at com.cloud.agent.manager.AgentAttache.send(AgentAttache.java:388) > at > com.cloud.agent.manager.AgentManagerImpl.send(AgentManagerImpl.java:505) > at > com.cloud.agent.manager.AgentManagerImpl.send(AgentManagerImpl.java:458) > at > com.cloud.vm.VirtualMachineManagerImpl.advanceStop(VirtualMachineManagerImpl.java:1079) > at > com.cloud.vm.UserVmManagerImpl.stopVirtualMachine(UserVmManagerImpl.java:2804) > at > com.cloud.event.ActionEventCallback.intercept(ActionEventCallback.java:36) > at com.cloud.api.commands.StopVMCmd.execute(StopVMCmd.java:119) > at com.cloud.api.ApiDispatcher.dispatch(ApiDispatcher.java:138) > at > com.cloud.async.AsyncJobManagerImpl$1.run(AsyncJobManagerImpl.java:432) > at > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) > at java.util.concurrent.FutureTask.run(FutureTask.java:166) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) > at java.lang.Thread.run(Thread.java:679) > > How to rectify this? How can I achieve my goal? > > Thanking You, > Nehal J. Wani > UG2, BTech CS+MS(CL) > IIIT-Hyderabadhttp://commanlinewani.blogspot.com > This email and any attachments to it may be confidential and are intended > solely for the use of the individual to whom it is addressed. Any views or > opinions expressed are solely those of the author and do not necessarily > represent those of Shape Blue Ltd or related companies. If you are not the > intended recipient of this email, you must neither take any action based upon > its contents, nor copy or show it to anyone. Please contact the sender if you > believe you have received this email in error. Shape Blue Ltd is a company > incorporated in England & Wales. ShapeBlue Services India LLP is operated > under license from Shape Blue Ltd. ShapeBlue is a registered trademark. > > > > > -- > *Steven Liang* > *Linux System Admin* > *Phone*: 1.416.499.8009 ext. 2865 > *Cell Phone*: 1.647.718.5292 > *Email*: [email protected] > www.yesup.com | account.yesup.com > > [image: Yesup] >
