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[ZongKai LI <lzklibj@xxxxxxxxxx>]

Public bug reported:

We can use dhcp-agent-network-add to manually schedule a net to dhcp-
agents. And when we manually schedule dhcp-agent, neutron code should
check configure dhcp_agents_per_network, to verify current manually
scheduling could be support or not.

Pre-conditions:
2 active dhcp-agents, agent-A and agent-B;
network net-1 is bound on agent-A, use "neutron dhcp-agent-list-hosting-net" can to verify this;
set dhcp_agents_per_network = 1 in /etc/neutron/neutron.conf;

steps:
directly run "neutron dhcp-agent-network-add AGENT-B-ID NET-1-ID" without remove net-1 from agent-A first.

expected:
warning or error to tells that couldn't schedule net-1 onto agent-B, for numbers of agents hosting net-1 couldn't be larger than dhcp_agents_per_network value.

actual result:
running "neutron dhcp-agent-list-hosting-net NET-1-ID" will output that net-1 is hosted by agent-A and agent-B now.

** Affects: neutron
     Importance: Undecided
     Assignee: ZongKai LI (lzklibj)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => ZongKai LI (lzklibj)

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https://bugs.launchpad.net/bugs/1507492

Title:
  manually schedule dhcp-agent doesn't check dhcp_agents_per_network

Status in neutron:
  New

Bug description:
  We can use dhcp-agent-network-add to manually schedule a net to dhcp-
  agents. And when we manually schedule dhcp-agent, neutron code should
  check configure dhcp_agents_per_network, to verify current manually
  scheduling could be support or not.

  Pre-conditions:
  2 active dhcp-agents, agent-A and agent-B;
  network net-1 is bound on agent-A, use "neutron dhcp-agent-list-hosting-net" can to verify this;
  set dhcp_agents_per_network = 1 in /etc/neutron/neutron.conf;

  steps:
  directly run "neutron dhcp-agent-network-add AGENT-B-ID NET-1-ID" without remove net-1 from agent-A first.

  expected:
  warning or error to tells that couldn't schedule net-1 onto agent-B, for numbers of agents hosting net-1 couldn't be larger than dhcp_agents_per_network value.

  actual result:
  running "neutron dhcp-agent-list-hosting-net NET-1-ID" will output that net-1 is hosted by agent-A and agent-B now.

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