This topic describes how to change your multicast address for group membership.By default, Eucalyptus uses the multicast address 18.104.22.168 for group membership. Most data centers limit multicast address communication for security measures. We recommend that you use addresses in the administratively-scoped multicast address range.
As of Eucalyptus 4.3, the default multicast address changed from 22.214.171.124 to 126.96.36.199.
To change the multicast address for group membership Stop all services, starting from the CC, SC, Walrus, then CLC. For example:
systemctl stop eucalyptus-cluster.service systemctl stop eucalyptus-cloud.service
Change the eucalyptus.conf on the CC, modifying the
CLOUD_OPTS parameter to the new IP address:
The above shows how to set the multicast address to a value compatible with releases prior to Eucalyptus 4.3.
systemctl start eucalyptus-cloud.service systemctl start eucalyptus-cluster.service
Verify that the configured multicast address is being used via netstat: