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⇤ ← Revision 4 as of 2018-01-09 23:37:44 →
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Editor: Kristian Kallenberg
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← Revision 9 as of 2018-01-10 00:03:15 → ⇥
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Editor: Kristian Kallenberg
Comment:
Deletions are marked like this. Additions are marked like this.
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= Corosync =
We will use corosync to create a virtual IP which is shared by two systems		 = Corosync and HA-proxy =
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We will use corosync to create a virtual IP-address which is shared by two systems. One of the systems has the virtual IP-address. If the system goes down, the other system will take over the virtual IP-address. HA-proxy will be running on each of the hosts relaying incoming HTTP-requests to two webservers.

 * 192.168.1.47 virtual IP-address
 * 192.168.1.48 haproxy01
 * 192.168.1.49 haproxy02

== Software ==
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apt-get install corosync apt-get install corosync haproxy crmsh
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== Configuration ==
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Restart corosync to load the new configuration.
{{{
service corosync restart
}}}

== Commmands ==
Run the following on startup
{{{

}}}

Corosync and HA-proxy

We will use corosync to create a virtual IP-address which is shared by two systems. One of the systems has the virtual IP-address. If the system goes down, the other system will take over the virtual IP-address. HA-proxy will be running on each of the hosts relaying incoming HTTP-requests to two webservers.

  • 192.168.1.47 virtual IP-address
  • 192.168.1.48 haproxy01
  • 192.168.1.49 haproxy02

Software

apt-get install corosync haproxy crmsh

Configuration

Add the local network and a multicast address to /etc/corosync/corosync.conf in the interface section 

interface {
        bindnetaddr: 192.168.1.0 
        mcastaddr: 239.192.1.1
}

Restart corosync to load the new configuration. 

service corosync restart

Commmands

Run the following on startup 

None: Corosync and HA-proxy  (last edited 2021-08-12 09:31:08 by Kristian Kallenberg)