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本帖最后由 royzs 于 2013-07-31 09:54 编辑
我以前配置了一个LVS一直很稳定，最近又配置了一台，然后出现了一些科学无法解释的问题
【问题描述】：
服务器lvsmaster一台，realserver两台，realserver1和realserver2，realserver1服务器配置DELL r720，16G内存并且不做他用；realserver2配置Dellr710，内存8G上面有其他业务；
1.模式：DR
2.算法wrr
3.权重分配realserver1，realserver2都分配成1；
【现象1】：
流量分发realserver1：realserver2约为1:3
各位看官，您说这现象奇怪吗，wrr模式是根据真实服务器的不同处理能力来调度访问请求，可以保证处理能力强的服务器能处理更多的访问流量，调度器可以自动问询真实服务器的负载情况，并动态地调整其权值。按理说应该realserver1的流量多才对………………
【现象2】
当我把权重分配realserver1，realserver2都分配成100；
流量分发依然是realserver1：realserver2约为1:3
【现象3】
当我把权重分配realserver1为100，realserver2分配成90；
流量分发依然是realserver1：realserver2约为1:3
【现象4】出现了逆转
当我把权重分配realserver1为100，realserver2都分配成80；
流量分发依然是realserver1：realserver2约为3:1
【现象5】依然保持逆转
当我把权重分配realserver1为100，realserver2都分配成30；
流量分发依然是realserver1：realserver2约为10:1——15:1之间
您可能想说把算法改成round robin（轮叫），会不会流量就均衡了呢，我正是这样的目的，我的目的就是让这两台服务器的流量分发均衡，但是我试过了，以失败告终
不管我的算法是rr还是wrr，其结果都一样，见【现象1】——【现象5】
您说着现象是不是连【科学都无法解释】呢，电脑是机器，代码是死的，软件也是按照代码的要求去运作，他怎么就不按照数字才算呢
【注】：每次修改配置都重启pulse进程，有配置keepalived，有配置memcached
今天看了下/var/log/message里面的日志- Jul 31 09:42:12 lvsmaster Keepalived[31846]: Stopping Keepalived v1.2.7 (02/21,2013)
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[31848]: VRRP_Instance(VI_1) sending 0 priority
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[31848]: VRRP_Instance(VI_1) removing protocol VIPs.
- Jul 31 09:42:12 lvsmaster Keepalived[12498]: Starting Keepalived v1.2.7 (02/21,2013)
- Jul 31 09:42:12 lvsmaster Keepalived[12499]: Starting Healthcheck child process, pid=12500
- Jul 31 09:42:12 lvsmaster Keepalived[12499]: Starting VRRP child process, pid=12501
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Interface queue is empty
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, em2
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, em3
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, em4
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, bond0
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Netlink reflector reports IP "LVSMASTER_IP" added
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: Interface queue is empty
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Netlink reflector reports IP fe80::d6ae:52ff:fe9b:4fde added
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: No such interface, em2
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: No such interface, em3
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Registering Kernel netlink reflector
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: No such interface, em4
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: No such interface, bond0
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Registering Kernel netlink command channel
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: Netlink reflector reports IP "LVSMASTER_IP" added
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: Netlink reflector reports IP fe80::d6ae:52ff:fe9b:4fde added
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: Registering Kernel netlink reflector
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: Registering Kernel netlink command channel
- Jul 31 09:42:12 lvsmaster Keepalived_vrrp[12501]: Registering gratuitous ARP shared channel
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Opening file '/etc/keepalived/keepalived.conf'.
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Configuration is using : 15039 Bytes
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: Interface queue is empty
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, em2
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, em3
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, em4
- Jul 31 09:42:12 lvsmaster Keepalived_healthcheckers[12500]: No such interface, bond0
难道我现在就去换服务器，那简直是不可能的，谁帮帮我啊，，，， |
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发表于 2013-06-27 10:45
