Hi All, This question is about: http://www.howtoforge.com/high_availability_loadbalanced_apache_cluster First off, I have to say this is a fantastic howto! I realize that "high availability" and clustering is an very complex process, yet this howto has done an excellent job of compressing it down to a "n00bs guide" Everything went well (I have 2 load balancers, with active fail over, works perfectly, except the last step.. The howto is for Debian, but the project I am working on is Fedora based. The howto says to do this on the webservers: But Redhat/Fedora does not use /etc/network/interfaces it uses /etc/sysconfig/network-scripts/ifcfg-eth* I have tried putting this in /etc/sysconfig/network-scripts/ifcfg-lo:0 but doing that just breaks all network connectivity... Does anyone have any ideas?
still does not work though even with the alias added.. it still won't work. I can ping the virtual IP address... but its not routing port 80 thru to the webservers! anyone?
i also hving a same problem like u... i make apache webserver and mysql cluster with load balancing..but i also facing the same problem.. i m using Ubuntu 5.10 after i add this to the interfaces ...and i ifup lo:0 vi /etc/network/interfaces auto lo:0 iface lo:0 inet static address 10.100.100.105 netmask 255.255.255.0 pre-up sysctl -p > /dev/null The virtual ip still exist..but mysql cluster connection to mgm node lost...and connection to internet also lost... b4 i ifup , everything works fine..mysql cluster node all fine.. and i think is something wrong with the interfaces file.. y the netmask is 255.255.255.255 ???? what is the meaning of pre-up sysctl -p > /dev/null ??? plz help us ..
Unfortunately I don't know how the syntax should be in the /etc/sysconfig/network-scripts/ifcfg-lo:0 file...
Can you post your /etc/network/interfaces file? Please wrap it in CODE tags so that I can see if leading spaces are correct in your file.
This is my sql1 and sql2 interface file..which's the ip is 10.100.100.102 (sql1) and 10.100.100.103 (sql2). All my 4 pc is throught a hub and go to a DNS. #vi /etc/network/interfaces Code: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # This is a list of hotpluggable network interfaces. # They will be activated automatically by the hotplug subsystem. mapping hotplug script grep map eth0 # The primary network interface iface eth0 inet static address 10.100.100.102 netmask 255.0.0.0 gateway 10.100.100.1 auto eth0 auto lo:0 iface lo:0 inet static address 10.100.100.105 netmask 255.0.0.0 gateway 10.100.100.1 pre-up sysctl -p > /dev/null This is my etc/network/interfaces file. i dont understand is the netmask of the virtual ip, what should it be??and the 'pre-up sysctl -p > /dev/null' ... is there anything i set wrong ..plz correct me..thx..
It must be like this: Code: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # This is a list of hotpluggable network interfaces. # They will be activated automatically by the hotplug subsystem. mapping hotplug script grep map eth0 # The primary network interface iface eth0 inet static address 10.100.100.102 netmask 255.0.0.0 gateway 10.100.100.1 auto eth0 auto lo:0 iface lo:0 inet static address 10.100.100.105 netmask 255.0.0.0 gateway 10.100.100.1 pre-up sysctl -p > /dev/null Take care about the leading spaces!
