OpenSSI cluster

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OpenSSI cluster

Link: http://openssi.org

Install howto for debian sarge (3.1): http://openssi.org/cgi-bin/view?page=docs2/1.2/debian/INSTALL.html (really good explanation about howto progress after mastersetup - suggest following this after the below link to setup openssi on etch)

Install howto for debian etch: http://www.atlantech.com/%7Ejohn/openssi-etch/Howto.html

Master setup

apt-sources

deb http://debianmirror.wwi.dk/debian/ etch main contrib non-free
deb-src http://debianmirror.wwi.dk/debian/ etch main contrib non-free

deb http://security.debian.org/ etch/updates main contrib
deb-src http://security.debian.org/ etch/updates main contrib

deb http://www.atlantech.com/~john/openssi-etch ./
deb-src http://www.atlantech.com/~john/openssi-etch ./

deb http://www.backports.org/debian etch-backports main contrib non-free

There are 2 ways to setup a master distribution load:

  • SMP

- Which will try to fill up a load on one node and then relay to the others - all nodes are simply seen as another CPU and for the system it thinks it's just one huge singular system. This will accept and return queries/data from the same ip.

  • IP server

- This distrubutes loads according to the scheduler chosen and thus try to distribute load evenly across all nodes. This will receive on a seperate IP specified in cvip.conf and return data directly from the nodes (unless NAT is choosing as routing)

SMP setup

  • /cluster/etc/loadlevellist

Must have all the seperate instances of applications which has to run independently - ie clamav and amavisd-new if it's a mailscanner cluster:

/usr/bin/clamd
/usr/bin/amavisd

IP server (ip loadbalancing)

  • /etc/cvip.conf template
<?xml version="1.0"?>
<cvips>
        <routing>DR</routing>
        <cvip>
                <ip_addr>172.22.0.21</ip_addr>
                <service>
                        <tcp_port>10024</tcp_port>
                        <scheduler>wlc</scheduler>
                </service>
                <director_node>
                        <node_num>1</node_num>
                        <garp_interface>eth1</garp_interface>
                        <sync_interface>eth1</sync_interface>
                </director_node>

                <real_server_node>
                        <node_num>3-10</node_num>
                        <service>
                                <tcp_port>10024</tcp_port>
                        </service>
                </real_server_node>
        </cvip>
</cvips>

Node setup