[openstack][neutron[nova][kolla-ansible]instance cannot ping after live migrate
Hello guys.
I am using openstack yoga with kolla ansible.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or move this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True ------------------------------------------------
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
Hello guys.
I am using openstack yoga with kolla ansible.
without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or move this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False
you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks
debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
Hello guys.
I am using openstack yoga with kolla ansible.
without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or move this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False
you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks
debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
Hello.
When my instances was migrated to other computes. I check on dest host and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p udp -m udp --sport 67 --dport 68 -j RETURN missing and my instance cannot get IP. I must restart neutron_openvswitch_agent then this rule appears and I can touch the instance via network.
I use openswitch and provider networks. This problem has happened this week. after the system was upgraded from xena to yoga and I enabled quorum queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
Hello guys.
I am using openstack yoga with kolla ansible.
without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or move this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False
you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks
debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
Hello. I figured out that my rabbitmq queues are corrupt so neutron port cannot upgrade security rules. I need delete queues so I can migrate without problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello.
When my instances was migrated to other computes. I check on dest host and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p udp -m udp --sport 67 --dport 68 -j RETURN missing and my instance cannot get IP. I must restart neutron_openvswitch_agent then this rule appears and I can touch the instance via network.
I use openswitch and provider networks. This problem has happened this week. after the system was upgraded from xena to yoga and I enabled quorum queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
Hello guys.
I am using openstack yoga with kolla ansible.
without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or move this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False
you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks
debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
Hello. I just known about ops firewall last week. I am going to compare between them. Could you share some experience about why ovs firewall driver over iptables. Thank you. Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com wrote:
Why are you not using openvswitch flow based firewall instead of Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello. I figured out that my rabbitmq queues are corrupt so neutron port cannot upgrade security rules. I need delete queues so I can migrate without problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello.
When my instances was migrated to other computes. I check on dest host and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p udp -m udp --sport 67 --dport 68 -j RETURN missing and my instance cannot get IP. I must restart neutron_openvswitch_agent then this rule appears and I can touch the instance via network.
I use openswitch and provider networks. This problem has happened this week. after the system was upgraded from xena to yoga and I enabled quorum queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi < nguyenhuukhoinw@gmail.com> wrote:
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
Hello guys.
I am using openstack yoga with kolla ansible.
without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or
move
this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False
you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks
debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
iptables + linux bridge integration with OVS was very old and OVS ACL was not mature enough in earlier days. But nowadays OVN supports OVS base ACL and that means it's much more stable.
On Sat, Jul 29, 2023 at 10:29 AM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello. I just known about ops firewall last week. I am going to compare between them. Could you share some experience about why ovs firewall driver over iptables. Thank you. Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com wrote:
Why are you not using openvswitch flow based firewall instead of Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello. I figured out that my rabbitmq queues are corrupt so neutron port cannot upgrade security rules. I need delete queues so I can migrate without problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello.
When my instances was migrated to other computes. I check on dest host and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p udp -m udp --sport 67 --dport 68 -j RETURN missing and my instance cannot get IP. I must restart neutron_openvswitch_agent then this rule appears and I can touch the instance via network.
I use openswitch and provider networks. This problem has happened this week. after the system was upgraded from xena to yoga and I enabled quorum queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi < nguyenhuukhoinw@gmail.com> wrote:
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
Hello guys.
I am using openstack yoga with kolla ansible.
without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate.
When I migrate:
instance1 from host A to host B after that I cannot ping this instance(telnet also). I must restart neutron_openvswitch_agent or
move
this instance back to host B then this problem has gone.
this is my settings:
----------------- neutron.conf ----------------- [nova] live_migration_events = True
----------------- nova.conf ----------------- [DEFAULT] vif_plugging_timeout = 600 vif_plugging_is_fatal = False
you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks
debug = True
[compute] live_migration_wait_for_vif_plug = True
[workarounds] enable_qemu_monitor_announce_self = True
----------------- openvswitch_agent.ini----------------- [securitygroup] firewall_driver = openvswitch [ovs] openflow_processed_per_port = true
I check nova, neutron, ops logs but they are ok.
Thank you.
Nguyen Huu Khoi
Hello. Is it ok if we use ovs with native firewall driver which I mean don't use ovn. How about migration from ovs to ovn.
Nguyen Huu Khoi
On Sun, Jul 30, 2023 at 8:26 AM Satish Patel satish.txt@gmail.com wrote:
iptables + linux bridge integration with OVS was very old and OVS ACL was not mature enough in earlier days. But nowadays OVN supports OVS base ACL and that means it's much more stable.
On Sat, Jul 29, 2023 at 10:29 AM Nguyễn Hữu Khôi < nguyenhuukhoinw@gmail.com> wrote:
Hello. I just known about ops firewall last week. I am going to compare between them. Could you share some experience about why ovs firewall driver over iptables. Thank you. Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com wrote:
Why are you not using openvswitch flow based firewall instead of Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello. I figured out that my rabbitmq queues are corrupt so neutron port cannot upgrade security rules. I need delete queues so I can migrate without problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello.
When my instances was migrated to other computes. I check on dest host and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p udp -m udp --sport 67 --dport 68 -j RETURN missing and my instance cannot get IP. I must restart neutron_openvswitch_agent then this rule appears and I can touch the instance via network.
I use openswitch and provider networks. This problem has happened this week. after the system was upgraded from xena to yoga and I enabled quorum queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi < nguyenhuukhoinw@gmail.com> wrote:
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote: > Hello guys. > > I am using openstack yoga with kolla ansible. without logs of some kind i dont think anyoen will be able to hlep you with this. you have one issue with the config which i noted inline but that should not break live migration. but it would allow it to proceed when otherwise it would have failed. and it woudl allow this issue to happen instead of the vm goign to error ro the migration being aborted in pre live migrate. > > When I migrate: > > instance1 from host A to host B after that I cannot ping this > instance(telnet also). I must restart neutron_openvswitch_agent or move > this instance back to host B then this problem has gone. > > this is my settings: > > ----------------- neutron.conf ----------------- > [nova] > live_migration_events = True > ------------------------------------------------ > > ----------------- nova.conf ----------------- > [DEFAULT] > vif_plugging_timeout = 600 > vif_plugging_is_fatal = False you should never run with this set to false in production. it will break nova ability to detect if netroking is configured when booting or migrating a vm. we honestly should have remove this when we removed nova-networks > debug = True > > [compute] > live_migration_wait_for_vif_plug = True > > [workarounds] > enable_qemu_monitor_announce_self = True > > ----------------- openvswitch_agent.ini----------------- > [securitygroup] > firewall_driver = openvswitch > [ovs] > openflow_processed_per_port = true > > I check nova, neutron, ops logs but they are ok. > > Thank you. > > > Nguyen Huu Khoi
Hi,
Dnia niedziela, 30 lipca 2023 17:00:22 CEST Nguyễn Hữu Khôi pisze:
Hello. Is it ok if we use ovs with native firewall driver which I mean don't use ovn. How about migration from ovs to ovn.
Regarding migration from ML2/OVS to ML2/OVN backend it's easier to do it when You are using ML2/OVS with openvswitch (native) firewall driver as in that case plugging of the VMs into br-int will be the same before and after migration.
Nguyen Huu Khoi
On Sun, Jul 30, 2023 at 8:26 AM Satish Patel satish.txt@gmail.com wrote:
iptables + linux bridge integration with OVS was very old and OVS ACL was not mature enough in earlier days. But nowadays OVN supports OVS base ACL and that means it's much more stable.
I'm not sure but I think there are some mixed things here. Generally in Neutron we have "backends" like ML2/OVS (neutron-openvswitch-agent) or ML2/OVN (with ovn-controller running on compute nodes). There are more backends like ML2/Linuxbridge for example but lets not include them here and focus only on ML2/OVS and ML2/OVN as those were mentioned. Now, regarding firewall drivers, in ML2/OVS backend, neutron-openvswitch-agent can use one of the following firewall drivers: * iptables_hybrid - that's the one mentioned by Satish Patel as this "very old" solution. Indeed it is using linuxbridge between VM and br-int to implement iptables rule which will work on this linuxbridge for the instance, * openvswitch - this is newer firewall driver, where all SG rules are implemented on the host as OpenFlow rules in br-int. In this case VM is plugged directly to the br-int. But this isn't related to the OVN ACLs in any way. It's all implemented in the neutron-openvswitch-agent code. Details about it are in the: https://docs.openstack.org/neutron/latest/admin/config-ovsfwdriver.html
In ML2/OVN backend there is only one implementation of the Security Groups and this is based on the OVN ACL mechanism. In this case of course there is also no need to use any Linuxbridge between VM and br-int so VM is plugged directly into br-int.
On Sat, Jul 29, 2023 at 10:29 AM Nguyễn Hữu Khôi < nguyenhuukhoinw@gmail.com> wrote:
Hello. I just known about ops firewall last week. I am going to compare between them. Could you share some experience about why ovs firewall driver over iptables. Thank you. Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com wrote:
Why are you not using openvswitch flow based firewall instead of Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello. I figured out that my rabbitmq queues are corrupt so neutron port cannot upgrade security rules. I need delete queues so I can migrate without problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi nguyenhuukhoinw@gmail.com wrote:
Hello.
When my instances was migrated to other computes. I check on dest host and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p udp -m udp --sport 67 --dport 68 -j RETURN missing and my instance cannot get IP. I must restart neutron_openvswitch_agent then this rule appears and I can touch the instance via network.
I use openswitch and provider networks. This problem has happened this week. after the system was upgraded from xena to yoga and I enabled quorum queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi < nguyenhuukhoinw@gmail.com> wrote:
Because I dont see any error logs. Althought, i set debug log to on.
Your advices are very helpful to me. I will try to dig deeply. I am lost so some suggests are the best way for me to continue. :)
On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
> On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote: > > Hello guys. > > > > I am using openstack yoga with kolla ansible. > without logs of some kind i dont think anyoen will be able to hlep > you with this. > you have one issue with the config which i noted inline but that > should not break live migration. > but it would allow it to proceed when otherwise it would have failed. > and it woudl allow this issue to happen instead of the vm goign to > error ro the migration > being aborted in pre live migrate. > > > > When I migrate: > > > > instance1 from host A to host B after that I cannot ping this > > instance(telnet also). I must restart neutron_openvswitch_agent or > move > > this instance back to host B then this problem has gone. > > > > this is my settings: > > > > ----------------- neutron.conf ----------------- > > [nova] > > live_migration_events = True > > ------------------------------------------------ > > > > ----------------- nova.conf ----------------- > > [DEFAULT] > > vif_plugging_timeout = 600 > > vif_plugging_is_fatal = False > you should never run with this set to false in production. > it will break nova ability to detect if netroking is configured > when booting or migrating a vm. > we honestly should have remove this when we removed nova-networks > > debug = True > > > > [compute] > > live_migration_wait_for_vif_plug = True > > > > [workarounds] > > enable_qemu_monitor_announce_self = True > > > > ----------------- openvswitch_agent.ini----------------- > > [securitygroup] > > firewall_driver = openvswitch > > [ovs] > > openflow_processed_per_port = true > > > > I check nova, neutron, ops logs but they are ok. > > > > Thank you. > > > > > > Nguyen Huu Khoi > >
Dear Slawek,
I see that OVN still not supported some qos features
https://docs.openstack.org/neutron/latest/admin/config-qos.html
Am I correct? Will we have these future in the future?
Nguyen Huu Khoi
On Mon, Jul 31, 2023 at 2:12 PM Slawek Kaplonski skaplons@redhat.com wrote:
Hi,
Dnia niedziela, 30 lipca 2023 17:00:22 CEST Nguyễn Hữu Khôi pisze:
Hello.
Is it ok if we use ovs with native firewall driver which I mean don't use
ovn. How about migration from ovs to ovn.
Regarding migration from ML2/OVS to ML2/OVN backend it's easier to do it when You are using ML2/OVS with openvswitch (native) firewall driver as in that case plugging of the VMs into br-int will be the same before and after migration.
Nguyen Huu Khoi
On Sun, Jul 30, 2023 at 8:26 AM Satish Patel satish.txt@gmail.com
wrote:
iptables + linux bridge integration with OVS was very old and OVS ACL
was
not mature enough in earlier days. But nowadays OVN supports OVS base
ACL
and that means it's much more stable.
I'm not sure but I think there are some mixed things here. Generally in Neutron we have "backends" like ML2/OVS (neutron-openvswitch-agent) or ML2/OVN (with ovn-controller running on compute nodes). There are more backends like ML2/Linuxbridge for example but lets not include them here and focus only on ML2/OVS and ML2/OVN as those were mentioned.
Now, regarding firewall drivers, in ML2/OVS backend, neutron-openvswitch-agent can use one of the following firewall drivers:
- iptables_hybrid - that's the one mentioned by Satish Patel as this "very
old" solution. Indeed it is using linuxbridge between VM and br-int to implement iptables rule which will work on this linuxbridge for the instance,
- openvswitch - this is newer firewall driver, where all SG rules are
implemented on the host as OpenFlow rules in br-int. In this case VM is plugged directly to the br-int. But this isn't related to the OVN ACLs in any way. It's all implemented in the neutron-openvswitch-agent code. Details about it are in the: https://docs.openstack.org/neutron/latest/admin/config-ovsfwdriver.html
In ML2/OVN backend there is only one implementation of the Security Groups and this is based on the OVN ACL mechanism. In this case of course there is also no need to use any Linuxbridge between VM and br-int so VM is plugged directly into br-int.
On Sat, Jul 29, 2023 at 10:29 AM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com> wrote:
Hello.
I just known about ops firewall last week. I am going to compare
between them.
Could you share some experience about why ovs firewall driver over
iptables.
Thank you.
Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com
wrote:
Why are you not using openvswitch flow based firewall instead of
Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com>
wrote:
Hello.
I figured out that my rabbitmq queues are corrupt so neutron port
cannot
upgrade security rules. I need delete queues so I can migrate without
problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com>
wrote:
Hello.
When my instances was migrated to other computes. I check on dest
host
and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p
udp -m
udp --sport 67 --dport 68 -j RETURN missing and my instance cannot
get IP.
I must restart neutron_openvswitch_agent then this rule appears and
I can
touch the instance via network.
I use openswitch and provider networks. This problem has happened
this
week. after the system was upgraded from xena to yoga and I enabled
quorum
queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com> wrote:
> Because I dont see any error logs. Althought, i set debug log to
on.
>
> Your advices are very helpful to me. I will try to dig deeply. I am
> lost so some suggests are the best way for me to continue. :)
>
> On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
>
>> On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
>> > Hello guys.
>> >
>> > I am using openstack yoga with kolla ansible.
>> without logs of some kind i dont think anyoen will be able to hlep
>> you with this.
>> you have one issue with the config which i noted inline but that
>> should not break live migration.
>> but it would allow it to proceed when otherwise it would have
failed.
>> and it woudl allow this issue to happen instead of the vm goign to
>> error ro the migration
>> being aborted in pre live migrate.
>> >
>> > When I migrate:
>> >
>> > instance1 from host A to host B after that I cannot ping this
>> > instance(telnet also). I must restart neutron_openvswitch_agent
or
>> move
>> > this instance back to host B then this problem has gone.
>> >
>> > this is my settings:
>> >
>> > ----------------- neutron.conf -----------------
>> > [nova]
>> > live_migration_events = True
>> > ------------------------------------------------
>> >
>> > ----------------- nova.conf -----------------
>> > [DEFAULT]
>> > vif_plugging_timeout = 600
>> > vif_plugging_is_fatal = False
>> you should never run with this set to false in production.
>> it will break nova ability to detect if netroking is configured
>> when booting or migrating a vm.
>> we honestly should have remove this when we removed nova-networks
>> > debug = True
>> >
>> > [compute]
>> > live_migration_wait_for_vif_plug = True
>> >
>> > [workarounds]
>> > enable_qemu_monitor_announce_self = True
>> >
>> > ----------------- openvswitch_agent.ini-----------------
>> > [securitygroup]
>> > firewall_driver = openvswitch
>> > [ovs]
>> > openflow_processed_per_port = true
>> >
>> > I check nova, neutron, ops logs but they are ok.
>> >
>> > Thank you.
>> >
>> >
>> > Nguyen Huu Khoi
>>
>>
--
Slawek Kaplonski
Principal Software Engineer
Red Hat
Hi Slawek,
You are suggesting not to use an OVS base native firewall?
On Mon, Jul 31, 2023 at 3:12 AM Slawek Kaplonski skaplons@redhat.com wrote:
Hi,
Dnia niedziela, 30 lipca 2023 17:00:22 CEST Nguyễn Hữu Khôi pisze:
Hello.
Is it ok if we use ovs with native firewall driver which I mean don't use
ovn. How about migration from ovs to ovn.
Regarding migration from ML2/OVS to ML2/OVN backend it's easier to do it when You are using ML2/OVS with openvswitch (native) firewall driver as in that case plugging of the VMs into br-int will be the same before and after migration.
Nguyen Huu Khoi
On Sun, Jul 30, 2023 at 8:26 AM Satish Patel satish.txt@gmail.com
wrote:
iptables + linux bridge integration with OVS was very old and OVS ACL
was
not mature enough in earlier days. But nowadays OVN supports OVS base
ACL
and that means it's much more stable.
I'm not sure but I think there are some mixed things here. Generally in Neutron we have "backends" like ML2/OVS (neutron-openvswitch-agent) or ML2/OVN (with ovn-controller running on compute nodes). There are more backends like ML2/Linuxbridge for example but lets not include them here and focus only on ML2/OVS and ML2/OVN as those were mentioned.
Now, regarding firewall drivers, in ML2/OVS backend, neutron-openvswitch-agent can use one of the following firewall drivers:
- iptables_hybrid - that's the one mentioned by Satish Patel as this "very
old" solution. Indeed it is using linuxbridge between VM and br-int to implement iptables rule which will work on this linuxbridge for the instance,
- openvswitch - this is newer firewall driver, where all SG rules are
implemented on the host as OpenFlow rules in br-int. In this case VM is plugged directly to the br-int. But this isn't related to the OVN ACLs in any way. It's all implemented in the neutron-openvswitch-agent code. Details about it are in the: https://docs.openstack.org/neutron/latest/admin/config-ovsfwdriver.html
In ML2/OVN backend there is only one implementation of the Security Groups and this is based on the OVN ACL mechanism. In this case of course there is also no need to use any Linuxbridge between VM and br-int so VM is plugged directly into br-int.
On Sat, Jul 29, 2023 at 10:29 AM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com> wrote:
Hello.
I just known about ops firewall last week. I am going to compare
between them.
Could you share some experience about why ovs firewall driver over
iptables.
Thank you.
Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com
wrote:
Why are you not using openvswitch flow based firewall instead of
Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com>
wrote:
Hello.
I figured out that my rabbitmq queues are corrupt so neutron port
cannot
upgrade security rules. I need delete queues so I can migrate without
problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com>
wrote:
Hello.
When my instances was migrated to other computes. I check on dest
host
and I see that
-A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p
udp -m
udp --sport 67 --dport 68 -j RETURN missing and my instance cannot
get IP.
I must restart neutron_openvswitch_agent then this rule appears and
I can
touch the instance via network.
I use openswitch and provider networks. This problem has happened
this
week. after the system was upgraded from xena to yoga and I enabled
quorum
queue.
Nguyen Huu Khoi
On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com> wrote:
> Because I dont see any error logs. Althought, i set debug log to
on.
>
> Your advices are very helpful to me. I will try to dig deeply. I am
> lost so some suggests are the best way for me to continue. :)
>
> On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
>
>> On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
>> > Hello guys.
>> >
>> > I am using openstack yoga with kolla ansible.
>> without logs of some kind i dont think anyoen will be able to hlep
>> you with this.
>> you have one issue with the config which i noted inline but that
>> should not break live migration.
>> but it would allow it to proceed when otherwise it would have
failed.
>> and it woudl allow this issue to happen instead of the vm goign to
>> error ro the migration
>> being aborted in pre live migrate.
>> >
>> > When I migrate:
>> >
>> > instance1 from host A to host B after that I cannot ping this
>> > instance(telnet also). I must restart neutron_openvswitch_agent
or
>> move
>> > this instance back to host B then this problem has gone.
>> >
>> > this is my settings:
>> >
>> > ----------------- neutron.conf -----------------
>> > [nova]
>> > live_migration_events = True
>> > ------------------------------------------------
>> >
>> > ----------------- nova.conf -----------------
>> > [DEFAULT]
>> > vif_plugging_timeout = 600
>> > vif_plugging_is_fatal = False
>> you should never run with this set to false in production.
>> it will break nova ability to detect if netroking is configured
>> when booting or migrating a vm.
>> we honestly should have remove this when we removed nova-networks
>> > debug = True
>> >
>> > [compute]
>> > live_migration_wait_for_vif_plug = True
>> >
>> > [workarounds]
>> > enable_qemu_monitor_announce_self = True
>> >
>> > ----------------- openvswitch_agent.ini-----------------
>> > [securitygroup]
>> > firewall_driver = openvswitch
>> > [ovs]
>> > openflow_processed_per_port = true
>> >
>> > I check nova, neutron, ops logs but they are ok.
>> >
>> > Thank you.
>> >
>> >
>> > Nguyen Huu Khoi
>>
>>
--
Slawek Kaplonski
Principal Software Engineer
Red Hat
Hi,
Dnia poniedziałek, 31 lipca 2023 15:12:43 CEST Satish Patel pisze:
Hi Slawek,
You are suggesting not to use an OVS base native firewall?
No. I didn't say anything like that. This is actually even default firewall driver in devstack with ML2/OVS backend.
On Mon, Jul 31, 2023 at 3:12 AM Slawek Kaplonski skaplons@redhat.com wrote:
Hi,
Dnia niedziela, 30 lipca 2023 17:00:22 CEST Nguyễn Hữu Khôi pisze:
Hello.
Is it ok if we use ovs with native firewall driver which I mean don't use
ovn. How about migration from ovs to ovn.
Regarding migration from ML2/OVS to ML2/OVN backend it's easier to do it when You are using ML2/OVS with openvswitch (native) firewall driver as in that case plugging of the VMs into br-int will be the same before and after migration.
Nguyen Huu Khoi
On Sun, Jul 30, 2023 at 8:26 AM Satish Patel satish.txt@gmail.com
wrote:
iptables + linux bridge integration with OVS was very old and OVS ACL
was
not mature enough in earlier days. But nowadays OVN supports OVS base
ACL
and that means it's much more stable.
I'm not sure but I think there are some mixed things here. Generally in Neutron we have "backends" like ML2/OVS (neutron-openvswitch-agent) or ML2/OVN (with ovn-controller running on compute nodes). There are more backends like ML2/Linuxbridge for example but lets not include them here and focus only on ML2/OVS and ML2/OVN as those were mentioned.
Now, regarding firewall drivers, in ML2/OVS backend, neutron-openvswitch-agent can use one of the following firewall drivers:
- iptables_hybrid - that's the one mentioned by Satish Patel as this "very
old" solution. Indeed it is using linuxbridge between VM and br-int to implement iptables rule which will work on this linuxbridge for the instance,
- openvswitch - this is newer firewall driver, where all SG rules are
implemented on the host as OpenFlow rules in br-int. In this case VM is plugged directly to the br-int. But this isn't related to the OVN ACLs in any way. It's all implemented in the neutron-openvswitch-agent code. Details about it are in the: https://docs.openstack.org/neutron/latest/admin/config-ovsfwdriver.html
In ML2/OVN backend there is only one implementation of the Security Groups and this is based on the OVN ACL mechanism. In this case of course there is also no need to use any Linuxbridge between VM and br-int so VM is plugged directly into br-int.
On Sat, Jul 29, 2023 at 10:29 AM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com> wrote:
Hello.
I just known about ops firewall last week. I am going to compare
between them.
Could you share some experience about why ovs firewall driver over
iptables.
Thank you.
Nguyen Huu Khoi
On Sat, Jul 29, 2023 at 5:55 PM Satish Patel satish.txt@gmail.com
wrote:
Why are you not using openvswitch flow based firewall instead of
Linuxbridge which will add hops in packet path.
Sent from my iPhone
On Jul 27, 2023, at 12:25 PM, Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com>
wrote:
Hello.
I figured out that my rabbitmq queues are corrupt so neutron port
cannot
upgrade security rules. I need delete queues so I can migrate without
problem.
Thank you so much for replying to me.
On Thu, Jul 27, 2023, 8:11 AM Nguyễn Hữu Khôi <
nguyenhuukhoinw@gmail.com>
wrote:
> Hello.
>
> When my instances was migrated to other computes. I check on dest
host
> and I see that
>
> -A neutron-openvswi-i41ec1d15-e -d x.x.x.x(my instance ip)/32 -p
udp -m
> udp --sport 67 --dport 68 -j RETURN missing and my instance cannot
get IP.
> I must restart neutron_openvswitch_agent then this rule appears and
I can
> touch the instance via network.
>
> I use openswitch and provider networks. This problem has happened
this
> week. after the system was upgraded from xena to yoga and I enabled
quorum
> queue.
>
>
>
> Nguyen Huu Khoi
>
>
> On Wed, Jul 26, 2023 at 5:28 PM Nguyễn Hữu Khôi <
> nguyenhuukhoinw@gmail.com> wrote:
>
>> Because I dont see any error logs. Althought, i set debug log to
on.
>>
>> Your advices are very helpful to me. I will try to dig deeply. I am
>> lost so some suggests are the best way for me to continue. :)
>>
>> On Wed, Jul 26, 2023, 4:39 PM smooney@redhat.com wrote:
>>
>>> On Wed, 2023-07-26 at 07:49 +0700, Nguyễn Hữu Khôi wrote:
>>> > Hello guys.
>>> >
>>> > I am using openstack yoga with kolla ansible.
>>> without logs of some kind i dont think anyoen will be able to hlep
>>> you with this.
>>> you have one issue with the config which i noted inline but that
>>> should not break live migration.
>>> but it would allow it to proceed when otherwise it would have
failed.
>>> and it woudl allow this issue to happen instead of the vm goign to
>>> error ro the migration
>>> being aborted in pre live migrate.
>>> >
>>> > When I migrate:
>>> >
>>> > instance1 from host A to host B after that I cannot ping this
>>> > instance(telnet also). I must restart neutron_openvswitch_agent
or
>>> move
>>> > this instance back to host B then this problem has gone.
>>> >
>>> > this is my settings:
>>> >
>>> > ----------------- neutron.conf -----------------
>>> > [nova]
>>> > live_migration_events = True
>>> > ------------------------------------------------
>>> >
>>> > ----------------- nova.conf -----------------
>>> > [DEFAULT]
>>> > vif_plugging_timeout = 600
>>> > vif_plugging_is_fatal = False
>>> you should never run with this set to false in production.
>>> it will break nova ability to detect if netroking is configured
>>> when booting or migrating a vm.
>>> we honestly should have remove this when we removed nova-networks
>>> > debug = True
>>> >
>>> > [compute]
>>> > live_migration_wait_for_vif_plug = True
>>> >
>>> > [workarounds]
>>> > enable_qemu_monitor_announce_self = True
>>> >
>>> > ----------------- openvswitch_agent.ini-----------------
>>> > [securitygroup]
>>> > firewall_driver = openvswitch
>>> > [ovs]
>>> > openflow_processed_per_port = true
>>> >
>>> > I check nova, neutron, ops logs but they are ok.
>>> >
>>> > Thank you.
>>> >
>>> >
>>> > Nguyen Huu Khoi
>>>
>>>
--
Slawek Kaplonski
Principal Software Engineer
Red Hat
participants (4)
-
Nguyễn Hữu Khôi
-
Satish Patel
-
Slawek Kaplonski
-
smooney＠redhat.com