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jacob.rief@xxxxxx wrote:
>
> Hi,
> how can I configure the Load Balancer so that I can access
> any service with the virtual IP from the Load Balancer itself.
> If the Load Balancer is configured for example:
> (eth0=195.96.23.250 eth1=172.16.0.1)
> # ipvsadm -A -t 195.96.23.250:80 -s wlc
> # ipvsadm -a -t 195.96.23.250:80 -r 172.16.0.10:80 -m
> I can access the Real Server with
> # lynx 172.16.0.10:80
> but I can't with
> # lynx 195.96.23.250:80
> Alert!: Unable to connect to remote host.
>
Sorry that you cannot access the virtual service from the load
balancer. Only from out of the server cluster, you can view
the whole server cluster as a single high-performance and
highly available server.
> Something else...
> ipvsadm.c version1.1 should be patched,
> I think there is a small bug in there. For example:
> (eth0=195.96.23.250 eth1=172.16.0.1)
> # ipvsadm -A -t 195.96.23.250:82 -s wlc
> # ipvsadm -a -t 195.96.23.250:82 -r 172.16.0.10:80 -m
>
> I can't delete this entry with
> # ipvsadm -d -t 195.96.23.250:82 -r 172.16.0.10:80
> setsockopt failed: No such file or directory
> No such destination
>
It was fixed long ago. The ipvsadm.c is in 1.4 now. Please check
the www.linuxvirtualserver.org to get the latest tar ball.
Thanks anyway,
Wensong
> However, if I create a rule with the same port, everything works fine
> # ipvsadm -A -t 195.96.23.250:82 -s wlc
> # ipvsadm -a -t 195.96.23.250:82 -r 172.16.0.10:82 -m
> # ipvsadm -d -t 195.96.23.250:82 -r 172.16.0.10:82
> everything works fine
> This patch would solve the problem:
> --- ipvsadm.c Thu Oct 7 11:04:19 1999
> +++ ipvsadm.c.orig Tue Sep 7 14:50:46 1999
> @@ -198,6 +198,7 @@
> if (mc.m_target == IP_MASQ_TARGET_VS && mc.m_cmd == IP_MASQ_CMD_ADD
> && strlen(mc.m_tname) == 0) {
> strcpy(mc.m_tname,DEF_SCHED);
> + }
>
> /*
> * Set the default weight 1
> @@ -212,8 +213,7 @@
> if ((mc.u.vs_user.masq_flags == IP_MASQ_F_VS_TUNNEL)
> || (mc.u.vs_user.masq_flags == IP_MASQ_F_VS_DROUTE))
> mc.u.vs_user.dport = mc.u.vs_user.vport;
> - }
> -
> +
> sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
> if (sockfd==-1) {
> perror("socket creation failed");
>
> Regards, Jacob
>
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