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Bug 1871048: OpenStack: dynamically set end of DHCP allocation pool #4077

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merged 1 commit into from Aug 25, 2020
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Bug 1871048: OpenStack: dynamically set end of DHCP allocation pool #4077

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4 changes: 1 addition & 3 deletions data/data/openstack/topology/private-network.tf
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Expand Up @@ -29,13 +29,11 @@ resource "openstack_networking_subnet_v2" "nodes" {
dns_nameservers = var.external_dns

# We reserve some space at the beginning of the CIDR to use for the VIPs
# It would be good to make this more dynamic by calculating the number of
# addresses in the provided CIDR. This currently assumes at least a /18.
# FIXME(mandre) if we let the ports pick up VIPs automatically, we don't have
# to do any of this.
allocation_pool {
start = cidrhost(local.nodes_cidr_block, 10)
end = cidrhost(local.nodes_cidr_block, 16000)
end = cidrhost(local.nodes_cidr_block, pow(2, (32 - split("/", local.nodes_cidr_block)[1])) - 2)
}
}

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