<div dir="ltr">Hi Ignazio,<div><br></div><div>it is hard to tell without logs. Please attach (pastebin) the relevant ones (probably nova ones, maybe neutron and cinder).</div><div>Also, did you keep the old configs and tried comparing them with new ones?</div><div><br></div><div>Kind regards,</div><div>Radek</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">niedz., 30 cze 2019 o 11:07 Ignazio Cassano <<a href="mailto:ignaziocassano@gmail.com">ignaziocassano@gmail.com</a>> napisał(a):<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Hi Mark,</div><div>let me to explain what I am trying.</div><div>I have a queens installation based on centos and pacemaker with some instances and heat stacks.</div><div>I would like to have another installation with same instances, projects, stacks ....I'd like to have same uuid for all objects (users,projects instances and so on, because it is controlled by a cloud management platform we wrote.<br></div><div><br></div><div>I stopped controllers on old queens installation backupping the openstack database.</div><div>I installed the new kolla openstack queens on new three controllers with same addresses of the old intallation , vip as well.</div><div>One of the three controllers is also a kvm node on queens.<br></div><div>I stopped all containeres except rabbit,keepalive,rabbit,haproxy and mariadb.</div><div>I deleted al openstack db on mariadb container and I imported the old tables, changing the address of rabbit for pointing to the new rabbit cluster.</div><div>I restarded containers.</div><div>Changing the rabbit address on old kvm nodes, I can see the old virtual machines and I can open console on them.</div><div>I can see all networks (tenant and provider) of al installation, but when I try to create a new instance on the new kvm, it remains in buiding state.</div><div>Seems it cannot aquire an address.</div><div>Storage between old and new installation are shred on nfs NETAPP, so I can see cinder volumes.</div><div>I suppose db structure is different between a kolla installation and a manual instaltion !?<br></div><div>What is wrong ?</div><div>Thanks</div><div>Ignazio<br></div><div><br></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno gio 27 giu 2019 alle ore 16:44 Mark Goddard <<a href="mailto:mark@stackhpc.com" target="_blank">mark@stackhpc.com</a>> ha scritto:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Thu, 27 Jun 2019 at 14:46, Ignazio Cassano <<a href="mailto:ignaziocassano@gmail.com" target="_blank">ignaziocassano@gmail.com</a>> wrote:<br>
><br>
> Sorry, for my question.<br>
> It does not need to change anything because endpoints refer to haproxy vips.<br>
> So if your new glance works fine you change haproxy backends for glance.<br>
> Regards<br>
> Ignazio<br>
<br>
That's correct - only the haproxy backend needs to be updated.<br>
<br>
><br>
><br>
> Il giorno gio 27 giu 2019 alle ore 15:21 Ignazio Cassano <<a href="mailto:ignaziocassano@gmail.com" target="_blank">ignaziocassano@gmail.com</a>> ha scritto:<br>
>><br>
>> Hello Mark,<br>
>> let me to verify if I understood your method.<br>
>><br>
>> You have old controllers,haproxy,mariadb and nova computes.<br>
>> You installed three new controllers but kolla.ansible inventory contains old mariadb and old rabbit servers.<br>
>> You are deployng single service on new controllers staring with glance.<br>
>> When you deploy glance on new controllers, it changes the glance endpoint on old mariadb db ?<br>
>> Regards<br>
>> Ignazio<br>
>><br>
>> Il giorno gio 27 giu 2019 alle ore 10:52 Mark Goddard <<a href="mailto:mark@stackhpc.com" target="_blank">mark@stackhpc.com</a>> ha scritto:<br>
>>><br>
>>> On Wed, 26 Jun 2019 at 19:34, Ignazio Cassano <<a href="mailto:ignaziocassano@gmail.com" target="_blank">ignaziocassano@gmail.com</a>> wrote:<br>
>>> ><br>
>>> > Hello,<br>
>>> > Anyone have tried to migrate an existing openstack installation to kolla containers?<br>
>>><br>
>>> Hi,<br>
>>><br>
>>> I'm aware of two people currently working on that. Gregory Orange and<br>
>>> one of my colleagues, Pierre Riteau. Pierre is away currently, so I<br>
>>> hope he doesn't mind me quoting him from an email to Gregory.<br>
>>><br>
>>> Mark<br>
>>><br>
>>> "I am indeed working on a similar migration using Kolla Ansible with<br>
>>> Kayobe, starting from a non-containerised OpenStack deployment based<br>
>>> on CentOS RPMs.<br>
>>> Existing OpenStack services are deployed across several controller<br>
>>> nodes and all sit behind HAProxy, including for internal endpoints.<br>
>>> We have additional controller nodes that we use to deploy<br>
>>> containerised services. If you don't have the luxury of additional<br>
>>> nodes, it will be more difficult as you will need to avoid processes<br>
>>> clashing when listening on the same port.<br>
>>><br>
>>> The method I am using resembles your second suggestion, however I am<br>
>>> deploying only one containerised service at a time, in order to<br>
>>> validate each of them independently.<br>
>>> I use the --tags option of kolla-ansible to restrict Ansible to<br>
>>> specific roles, and when I am happy with the resulting configuration I<br>
>>> update HAProxy to point to the new controllers.<br>
>>><br>
>>> As long as the configuration matches, this should be completely<br>
>>> transparent for purely HTTP-based services like Glance. You need to be<br>
>>> more careful with services that include components listening for RPC,<br>
>>> such as Nova: if the new nova.conf is incorrect and you've deployed a<br>
>>> nova-conductor that uses it, you could get failed instances launches.<br>
>>> Some roles depend on others: if you are deploying the<br>
>>> neutron-openvswitch-agent, you need to run the openvswitch role as<br>
>>> well.<br>
>>><br>
>>> I suggest starting with migrating Glance as it doesn't have any<br>
>>> internal services and is easy to validate. Note that properly<br>
>>> migrating Keystone requires keeping existing Fernet keys around, so<br>
>>> any token stays valid until the time it is expected to stop working<br>
>>> (which is fairly complex, see<br>
>>> <a href="https://bugs.launchpad.net/kolla-ansible/+bug/1809469" rel="noreferrer" target="_blank">https://bugs.launchpad.net/kolla-ansible/+bug/1809469</a>).<br>
>>><br>
>>> While initially I was using an approach similar to your first<br>
>>> suggestion, it can have side effects since Kolla Ansible uses these<br>
>>> variables when templating configuration. As an example, most services<br>
>>> will only have notifications enabled if enable_ceilometer is true.<br>
>>><br>
>>> I've added existing control plane nodes to the Kolla Ansible inventory<br>
>>> as separate groups, which allows me to use the existing database and<br>
>>> RabbitMQ for the containerised services.<br>
>>> For example, instead of:<br>
>>><br>
>>> [mariadb:children]<br>
>>> control<br>
>>><br>
>>> you may have:<br>
>>><br>
>>> [mariadb:children]<br>
>>> oldcontrol_db<br>
>>><br>
>>> I still have to perform the migration of these underlying services to<br>
>>> the new control plane, I will let you know if there is any hurdle.<br>
>>><br>
>>> A few random things to note:<br>
>>><br>
>>> - if run on existing control plane hosts, the baremetal role removes<br>
>>> some packages listed in `redhat_pkg_removals` which can trigger the<br>
>>> removal of OpenStack dependencies using them! I've changed this<br>
>>> variable to an empty list.<br>
>>> - compare your existing deployment with a Kolla Ansible one to check<br>
>>> for differences in endpoints, configuration files, database users,<br>
>>> service users, etc. For Heat, Kolla uses the domain heat_user_domain,<br>
>>> while your existing deployment may use another one (and this is<br>
>>> hardcoded in the Kolla Heat image). Kolla Ansible uses the "service"<br>
>>> project while a couple of deployments I worked with were using<br>
>>> "services". This shouldn't matter, except there was a bug in Kolla<br>
>>> which prevented it from setting the roles correctly:<br>
>>> <a href="https://bugs.launchpad.net/kolla/+bug/1791896" rel="noreferrer" target="_blank">https://bugs.launchpad.net/kolla/+bug/1791896</a> (now fixed in latest<br>
>>> Rocky and Queens images)<br>
>>> - the ml2_conf.ini generated for Neutron generates physical network<br>
>>> names like physnet1, physnet2… you may want to override<br>
>>> bridge_mappings completely.<br>
>>> - although sometimes it could be easier to change your existing<br>
>>> deployment to match Kolla Ansible settings, rather than configure<br>
>>> Kolla Ansible to match your deployment."<br>
>>><br>
>>> > Thanks<br>
>>> > Ignazio<br>
>>> ><br>
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