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minus4 13th December 2007 21:53

mysql cluster with load balance
hi there,

im using debian etch 64 bit (AMD) and have followed the how to with regards to mysql cluster, now all seems fine, a cluster is running, load balance is one on one off and all test pass.

but i have a couple of problems:

one mysql node is now unaccessable via SSH, so i have to use kvmoip
i have a virtual ip of xx.xx.xx.xx if i use this i get nothing unless im in the actual IP group, but i need this to be accessable from the web farm that is on another subnet ????? what am i doing wrong ?

also when i actually try mysql from within the subnet i just get a hang after entering my pass and i have to press control and Z to exit!!!

i would be grateful for some uncomplicated guidence on this as i am new to linux and everything is a nightmare.

p.s i could not install ultramonkey as they dont have a 64bit amd yet, but i have everything running with regards to db:mysql, heartbeat etc all as seperate installs.

i have an update on the error from mysql:

shell> mysql
ERROR 2003: Can't connect to MySQL server on 'host_name' (111)

i have done netstat -ln grep mysql

and i get this:

unix2 : {acc} stream listening 12555 /tmp/mysql.sock

i can connect if i go direct to the ip of the node and port 3306

another update:

i have this : net.ipv4.conf.eth0.arp_ignore = 1

i assume this blocks all traffic except for traffic on the current subnet ????
do i just comment this out? and the use ip sec ???

minus4 14th December 2007 13:53

okay i have everything running just one thing

i need to access the virtual IP from outside the newtork, ie from the web cluster

any idea's folks !!!

falko 14th December 2007 14:10

Just forward port 3306 (MySQL) from your router to the virtual IP address. The web cluster must then connect to your router's public IP.

minus4 14th December 2007 16:25

hi thanks,

in my firwall i have this:

name: mysqlvirtual
ip: <virtual IP>
from: ALL
to: <virtual IP>

is this what you mean, because i tried to telnet and still nothing

can i just say i dont have any other IP addresses, i have one subnet of public ip's
everything is blocked except for out and port 3306 by a firewall but ip addresses stay the same

minus4 14th December 2007 17:48

everything is spot on exept for this

IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP wrr
-> Route 1 0 0
-> Route 1 0 0

with my IPS but

-> Route 1 0 0
-> Route 1 0 0

weight says 0 0 before it said 0 1 is this anything ????????

minus4 15th December 2007 00:04

hi falko

i have an update, on the sql node i see this on boot:

error: net.ipv4.conf.eth0.arp_anounce is an unknown key
says the same for ignore too.

these are lines you have said to add !!!

does it matter that mine shows as ipv6 ????

should i change the 4's to 6 maybe, what do you think

or anybody else !

minus4 15th December 2007 23:42

well thanks falco

guess ya dont know ya own shit hay

and i thought the linux community was supposed to be good, at leeds with windows people actually help.

falko 16th December 2007 15:04


Originally Posted by minus4
guess ya dont know ya own shit hay

I do, and it's working for me. If I knew how to help you I'd have posted an answer.

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