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Message #17229
[Bug 1341042] [NEW] using neutron CLI to set a bad gateway result in dnsmasq continuously restart
Public bug reported:
I'm using devstack stable/icehouse, and my neutron version is
1409da70959496375f1ccccac45457663a918ec8
I created an internal network not connected to the router using default gateway and dhcp enabled.
I then created a VM which activated dnsmasq, which offered an IP to this VM.
If I mis-update the gateway, by going to Horizon, "Networks", "test-net", "subnet-2" "Edit Subnet", and set
Gateway IP (optional): 10.100.100.100
or mis-update the gateway using neutron CLI,
it results in neutron-dhcp-agent continously restarting the dnsmasq for the "private" network.
Horizon will not allow the user to mis-update the gateway, if I set "force_gateway_on_subnet = True" in /etc/neutron/neutron.conf.
But this parameter does not affect the behavior of the neutron CLI.
> neutron net-create test-net
Created a new network:
+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| admin_state_up | True |
| id | b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a |
| name | test-net |
| shared | False |
| status | ACTIVE |
| subnets | |
| tenant_id | 8092813be8fd4122a20ee3a6bfe91162 |
+----------------+--------------------------------------+
> neutron net-list
+--------------------------------------+----------+--------------------------------------------------+
| id | name | subnets |
+--------------------------------------+----------+--------------------------------------------------+
| 0dd5722d-f535-42ec-9257-437c05e4de25 | private | 81859ee5-4ea5-4e60-ab2a-ba74146d39ba 10.0.0.0/24 |
| 27c1649d-f6fc-4893-837d-dbc293fc4b80 | public | 6c1836a1-eb7d-4acb-ad6f-6c394cedced5 |
| b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a | test-net | |
+--------------------------------------+----------+--------------------------------------------------+
> neutron subnet-create --name subnet-2 test-net --enable_dhcp=True 10.10.150.0/24
Created a new subnet:
+------------------+--------------------------------------------------+
| Field | Value |
+------------------+--------------------------------------------------+
| allocation_pools | {"start": "10.10.150.2", "end": "10.10.150.254"} |
| cidr | 10.10.150.0/24 |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 10.10.150.1 |
| host_routes | |
| id | 4e462af6-7514-413c-bf55-4ae9a1643ce9 |
| ip_version | 4 |
| name | subnet-2 |
| network_id | b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a |
| tenant_id | 8092813be8fd4122a20ee3a6bfe91162 |
+------------------+--------------------------------------------------+
> neutron subnet-list
+--------------------------------------+----------------+----------------+--------------------------------------------------+
| id | name | cidr | allocation_pools |
+--------------------------------------+----------------+----------------+--------------------------------------------------+
| 4e462af6-7514-413c-bf55-4ae9a1643ce9 | subnet-2 | 10.10.150.0/24 | {"start": "10.10.150.2", "end": "10.10.150.254"} |
| 81859ee5-4ea5-4e60-ab2a-ba74146d39ba | private-subnet | 10.0.0.0/24 | {"start": "10.0.0.2", "end": "10.0.0.254"} |
+--------------------------------------+----------------+----------------+--------------------------------------------------+
> ps -ef |grep dnsmasq | grep -v grep
nobody 995 635 0 16:09 ? 00:00:00 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.1.1 --conf-file=/var/run/NetworkManager/dnsmasq.conf --cache-size=0 --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq --conf-dir=/etc/NetworkManager/dnsmasq.d
nobody 12991 1 0 18:21 ? 00:00:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap75786806-5a --except-interface=lo --pid-file=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/pid --dhcp-hostsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/host --addn-hosts=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/addn_hosts --dhcp-optsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/opts --leasefile-ro --dhcp-range=tag0,10.0.0.0,static,86400s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
> nova boot --image cirros-0.3.1-x86_64-uec --flavor m1.tiny --nic net-id=b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a vm2
:
:
> nova list
+--------------------------------------+------+--------+------------+-------------+----------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+------+--------+------------+-------------+----------------------+
| d98511f7-452c-4ab6-8af9-d73576714c87 | vm1 | ACTIVE | - | Running | private=10.0.0.2 |
| 5934a236-edfc-4662-85f4-f00bdac1137a | vm2 | ACTIVE | - | Running | test-net=10.10.150.2 |
+--------------------------------------+------+--------+------------+-------------+----------------------+
> ps -ef | grep dnsmasq | grep -v grep
nobody 995 635 0 16:09 ? 00:00:00 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.1.1 --conf-file=/var/run/NetworkManager/dnsmasq.conf --cache-size=0 --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq --conf-dir=/etc/NetworkManager/dnsmasq.d
nobody 12991 1 0 18:21 ? 00:00:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap75786806-5a --except-interface=lo --pid-file=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/pid --dhcp-hostsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/host --addn-hosts=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/addn_hosts --dhcp-optsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/opts --leasefile-ro --dhcp-range=tag0,10.0.0.0,static,86400s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
nobody 25284 1 0 19:02 ? 00:00:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap41fe641d-7c --except-interface=lo --pid-file=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/pid --dhcp-hostsfile=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/host --addn-hosts=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/addn_hosts --dhcp-optsfile=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/opts --leasefile-ro --dhcp-range=tag0,10.10.150.0,static,86400s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
19:17:42 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
12991
25284
> neutron subnet-update 4e462af6-7514-413c-bf55-4ae9a1643ce9 --gateway_ip=10.100.100.100
Updated subnet: 4e462af6-7514-413c-bf55-4ae9a1643ce9
19:19:36 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
25284
30892
19:19:49 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
25284
30999
19:19:59 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
25284
31137
I get the following output from screen:
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Traceback (most recent call last):
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/dhcp_agent.py", line 129, in call_driver
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent getattr(driver, action)(**action_kwargs)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 165, in enable
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent reuse_existing=True)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 848, in setup
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent self._set_default_route(network, interface_name)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 731, in _set_default_route
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent device.route.add_gateway(subnet.gateway_ip)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 369, in add_gateway
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent self._as_root(*args)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 218, in _as_root
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent kwargs.get('use_root_namespace', False))
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 71, in _as_root
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent namespace)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 82, in _execute
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent root_helper=root_helper)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/utils.py", line 76, in execute
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent raise RuntimeError(m)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent RuntimeError:
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qdhcp-b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a', 'ip', 'route', 'replace', 'default', 'via', '10.100.100.100', 'dev', 'tap41fe641d-7c']
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Exit code: 2
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Stdout: ''
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Stderr: 'RTNETLINK answers: Network is unreachable\n'
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent
** Affects: neutron
Importance: Undecided
Status: New
--
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https://bugs.launchpad.net/bugs/1341042
Title:
using neutron CLI to set a bad gateway result in dnsmasq continuously
restart
Status in OpenStack Neutron (virtual network service):
New
Bug description:
I'm using devstack stable/icehouse, and my neutron version is
1409da70959496375f1ccccac45457663a918ec8
I created an internal network not connected to the router using default gateway and dhcp enabled.
I then created a VM which activated dnsmasq, which offered an IP to this VM.
If I mis-update the gateway, by going to Horizon, "Networks", "test-net", "subnet-2" "Edit Subnet", and set
Gateway IP (optional): 10.100.100.100
or mis-update the gateway using neutron CLI,
it results in neutron-dhcp-agent continously restarting the dnsmasq for the "private" network.
Horizon will not allow the user to mis-update the gateway, if I set "force_gateway_on_subnet = True" in /etc/neutron/neutron.conf.
But this parameter does not affect the behavior of the neutron CLI.
> neutron net-create test-net
Created a new network:
+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| admin_state_up | True |
| id | b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a |
| name | test-net |
| shared | False |
| status | ACTIVE |
| subnets | |
| tenant_id | 8092813be8fd4122a20ee3a6bfe91162 |
+----------------+--------------------------------------+
> neutron net-list
+--------------------------------------+----------+--------------------------------------------------+
| id | name | subnets |
+--------------------------------------+----------+--------------------------------------------------+
| 0dd5722d-f535-42ec-9257-437c05e4de25 | private | 81859ee5-4ea5-4e60-ab2a-ba74146d39ba 10.0.0.0/24 |
| 27c1649d-f6fc-4893-837d-dbc293fc4b80 | public | 6c1836a1-eb7d-4acb-ad6f-6c394cedced5 |
| b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a | test-net | |
+--------------------------------------+----------+--------------------------------------------------+
> neutron subnet-create --name subnet-2 test-net --enable_dhcp=True 10.10.150.0/24
Created a new subnet:
+------------------+--------------------------------------------------+
| Field | Value |
+------------------+--------------------------------------------------+
| allocation_pools | {"start": "10.10.150.2", "end": "10.10.150.254"} |
| cidr | 10.10.150.0/24 |
| dns_nameservers | |
| enable_dhcp | True |
| gateway_ip | 10.10.150.1 |
| host_routes | |
| id | 4e462af6-7514-413c-bf55-4ae9a1643ce9 |
| ip_version | 4 |
| name | subnet-2 |
| network_id | b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a |
| tenant_id | 8092813be8fd4122a20ee3a6bfe91162 |
+------------------+--------------------------------------------------+
> neutron subnet-list
+--------------------------------------+----------------+----------------+--------------------------------------------------+
| id | name | cidr | allocation_pools |
+--------------------------------------+----------------+----------------+--------------------------------------------------+
| 4e462af6-7514-413c-bf55-4ae9a1643ce9 | subnet-2 | 10.10.150.0/24 | {"start": "10.10.150.2", "end": "10.10.150.254"} |
| 81859ee5-4ea5-4e60-ab2a-ba74146d39ba | private-subnet | 10.0.0.0/24 | {"start": "10.0.0.2", "end": "10.0.0.254"} |
+--------------------------------------+----------------+----------------+--------------------------------------------------+
> ps -ef |grep dnsmasq | grep -v grep
nobody 995 635 0 16:09 ? 00:00:00 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.1.1 --conf-file=/var/run/NetworkManager/dnsmasq.conf --cache-size=0 --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq --conf-dir=/etc/NetworkManager/dnsmasq.d
nobody 12991 1 0 18:21 ? 00:00:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap75786806-5a --except-interface=lo --pid-file=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/pid --dhcp-hostsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/host --addn-hosts=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/addn_hosts --dhcp-optsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/opts --leasefile-ro --dhcp-range=tag0,10.0.0.0,static,86400s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
> nova boot --image cirros-0.3.1-x86_64-uec --flavor m1.tiny --nic net-id=b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a vm2
:
:
> nova list
+--------------------------------------+------+--------+------------+-------------+----------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+------+--------+------------+-------------+----------------------+
| d98511f7-452c-4ab6-8af9-d73576714c87 | vm1 | ACTIVE | - | Running | private=10.0.0.2 |
| 5934a236-edfc-4662-85f4-f00bdac1137a | vm2 | ACTIVE | - | Running | test-net=10.10.150.2 |
+--------------------------------------+------+--------+------------+-------------+----------------------+
> ps -ef | grep dnsmasq | grep -v grep
nobody 995 635 0 16:09 ? 00:00:00 /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts --bind-interfaces --pid-file=/run/sendsigs.omit.d/network-manager.dnsmasq.pid --listen-address=127.0.1.1 --conf-file=/var/run/NetworkManager/dnsmasq.conf --cache-size=0 --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq --conf-dir=/etc/NetworkManager/dnsmasq.d
nobody 12991 1 0 18:21 ? 00:00:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap75786806-5a --except-interface=lo --pid-file=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/pid --dhcp-hostsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/host --addn-hosts=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/addn_hosts --dhcp-optsfile=/opt/stack/data/neutron/dhcp/0dd5722d-f535-42ec-9257-437c05e4de25/opts --leasefile-ro --dhcp-range=tag0,10.0.0.0,static,86400s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
nobody 25284 1 0 19:02 ? 00:00:00 dnsmasq --no-hosts --no-resolv --strict-order --bind-interfaces --interface=tap41fe641d-7c --except-interface=lo --pid-file=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/pid --dhcp-hostsfile=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/host --addn-hosts=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/addn_hosts --dhcp-optsfile=/opt/stack/data/neutron/dhcp/b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a/opts --leasefile-ro --dhcp-range=tag0,10.10.150.0,static,86400s --dhcp-lease-max=256 --conf-file= --domain=openstacklocal
19:17:42 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
12991
25284
> neutron subnet-update 4e462af6-7514-413c-bf55-4ae9a1643ce9 --gateway_ip=10.100.100.100
Updated subnet: 4e462af6-7514-413c-bf55-4ae9a1643ce9
19:19:36 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
25284
30892
19:19:49 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
25284
30999
19:19:59 > ps -ef | grep dnsmasq | grep -v grep | awk '{print $2}'
995
25284
31137
I get the following output from screen:
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Traceback (most recent call last):
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/dhcp_agent.py", line 129, in call_driver
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent getattr(driver, action)(**action_kwargs)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 165, in enable
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent reuse_existing=True)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 848, in setup
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent self._set_default_route(network, interface_name)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/dhcp.py", line 731, in _set_default_route
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent device.route.add_gateway(subnet.gateway_ip)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 369, in add_gateway
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent self._as_root(*args)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 218, in _as_root
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent kwargs.get('use_root_namespace', False))
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 71, in _as_root
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent namespace)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 82, in _execute
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent root_helper=root_helper)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent File "/opt/stack/neutron/neutron/agent/linux/utils.py", line 76, in execute
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent raise RuntimeError(m)
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent RuntimeError:
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qdhcp-b7bb10bb-48e0-4c1a-a5fc-9590b6619f5a', 'ip', 'route', 'replace', 'default', 'via', '10.100.100.100', 'dev', 'tap41fe641d-7c']
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Exit code: 2
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Stdout: ''
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent Stderr: 'RTNETLINK answers: Network is unreachable\n'
2014-07-11 19:23:26.212 TRACE neutron.agent.dhcp_agent
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