Open Stack

On Tue, Oct 23, 2018 at 10:20 AM Tobias Urdin <tobias.urdin at binero.se> wrote:
>
> Hello Erik,
>
> Could you specify the DNs you used for all certificates just so that I
> can rule it out on my side.
> You can redact anything sensitive with some to just get the feel on how
> it's configured.
>
> Best regards
> Tobias
>
I'm not actually using anything special or custom. For right now I
just let it use the default www.example.com stuff. These are the
settings in the playbook which I distilled from OSA

octavia_cert_key_length_server: '4096' # key length
octavia_cert_cipher_server: 'aes256'
octavia_cert_cipher_client: 'aes256'
octavia_cert_key_length_client: '4096' # key length
octavia_cert_server_ca_subject:
'/C=US/ST=Denial/L=Nowhere/O=Dis/CN=www.example.com' # change this to
something more real
octavia_cert_client_ca_subject:
'/C=US/ST=Denial/L=Nowhere/O=Dis/CN=www.example.com' # change this to
something more real
octavia_cert_client_req_common_name: 'www.example.com' # change this
to something more real
octavia_cert_client_req_country_name: 'US'
octavia_cert_client_req_state_or_province_name: 'Denial'
octavia_cert_client_req_locality_name: 'Nowhere'
octavia_cert_client_req_organization_name: 'Dis'
octavia_cert_validity_days: 1825 # 5 years

-Erik

> On 10/22/2018 04:47 PM, Erik McCormick wrote:
> > On Mon, Oct 22, 2018 at 4:23 AM Tobias Urdin <tobias.urdin at binero.se> wrote:
> >> Hello,
> >>
> >> I've been having a lot of issues with SSL certificates myself, on my
> >> second trip now trying to get it working.
> >>
> >> Before I spent a lot of time walking through every line in the DevStack
> >> plugin and fixing my config options, used the generate
> >> script [1] and still it didn't work.
> >>
> >> When I got the "invalid padding" issue it was because of the DN I used
> >> for the CA and the certificate IIRC.
> >>
> >>   > 19:34 < tobias-urdin> 2018-09-10 19:43:15.312 15032 WARNING
> >> octavia.amphorae.drivers.haproxy.rest_api_driver [-] Could not connect
> >> to instance. Retrying.: SSLError: ("bad handshake: Error([('rsa
> >> routines', 'RSA_padding_check_PKCS1_type_1', 'block type is not 01'),
> >> ('rsa routines', 'RSA_EAY_PUBLIC_DECRYPT', 'padding check failed'),
> >> ('SSL routines', 'ssl3_get_key_exchange', 'bad signature')],)",)
> >>   > 19:47 < tobias-urdin> after a quick google "The problem was that my
> >> CA DN was the same as the certificate DN."
> >>
> >> IIRC I think that solved it, but then again I wouldn't remember fully
> >> since I've been at so many different angles by now.
> >>
> >> Here is my IRC logs history from the #openstack-lbaas channel, perhaps
> >> it can help you out
> >> http://paste.openstack.org/show/732575/
> >>
> > Tobias, I owe you a beer. This was precisely the issue. I'm deploying
> > Octavia with kolla-ansible. It only deploys a single CA. After hacking
> > the templates and playbook to incorporate a separate server CA, the
> > amphorae now load and provision the required namespace. I'm adding a
> > kolla tag to the subject of this in hopes that someone might want to
> > take on changing this behavior in the project. Hopefully after I get
> > through Upstream Institute in Berlin I'll be able to do it myself if
> > nobody else wants to do it.
> >
> > For certificate generation, I extracted the contents of
> > octavia_certs_install.yml (which sets up the directory structure,
> > openssl.cnf, and the client CA), and octavia_certs.yml (which creates
> > the server CA and the client certificate) and mashed them into a
> > separate playbook just for this purpose. At the end I get:
> >
> > ca_01.pem - Client CA Certificate
> > ca_01.key - Client CA Key
> > ca_server_01.pem - Server CA Certificate
> > cakey.pem - Server CA Key
> > client.pem - Concatenated Client Key and Certificate
> >
> > If it would help to have the playbook, I can stick it up on github
> > with a huge "This is a hack" disclaimer on it.
> >
> >> -----
> >>
> >> Sorry for hijacking the thread but I'm stuck as well.
> >>
> >> I've in the past tried to generate the certificates with [1] but now
> >> moved on to using the openstack-ansible way of generating them [2]
> >> with some modifications.
> >>
> >> Right now I'm just getting: Could not connect to instance. Retrying.:
> >> SSLError: [SSL: BAD_SIGNATURE] bad signature (_ssl.c:579)
> >> from the amphoras, haven't got any further but I've eliminated a lot of
> >> stuck in the middle.
> >>
> >> Tried deploying Ocatavia on Ubuntu with python3 to just make sure there
> >> wasn't an issue with CentOS and OpenSSL versions since it tends to lag
> >> behind.
> >> Checking the amphora with openssl s_client [3] it gives the same one,
> >> but the verification is successful just that I don't understand what the
> >> bad signature
> >> part is about, from browsing some OpenSSL code it seems to be related to
> >> RSA signatures somehow.
> >>
> >> 140038729774992:error:1408D07B:SSL routines:ssl3_get_key_exchange:bad
> >> signature:s3_clnt.c:2032:
> >>
> >> So I've basicly ruled out Ubuntu (openssl-1.1.0g) and CentOS
> >> (openssl-1.0.2k) being the problem, ruled out signing_digest, so I'm
> >> back to something related
> >> to the certificates or the communication between the endpoints, or what
> >> actually responds inside the amphora (gunicorn IIUC?). Based on the
> >> "verify" functions actually causing that bad signature error I would
> >> assume it's the generated certificate that the amphora presents that is
> >> causing it.
> >>
> >> I'll have to continue the troubleshooting to the inside of the amphora,
> >> I've used the test-only amphora image before but have now built my own
> >> one that is
> >> using the amphora-agent from the actual stable branch, but same issue
> >> (bad signature).
> >>
> >> For verbosity this is the config options set for the certificates in
> >> octavia.conf and which file it was copied from [4], same here, a
> >> replication of what openstack-ansible does.
> >>
> >> Appreciate any feedback or help :)
> >>
> >> Best regards
> >> Tobias
> >>
> >> [1]
> >> https://github.com/openstack/octavia/blob/master/bin/create_certificates.sh
> >> [2] http://paste.openstack.org/show/732483/
> >> [3] http://paste.openstack.org/show/732486/
> >> [4] http://paste.openstack.org/show/732487/
> >>
> >> On 10/20/2018 01:53 AM, Michael Johnson wrote:
> >>> Hi Erik,
> >>>
> >>> Sorry to hear you are still having certificate issues.
> >>>
> >>> Issue #2 is probably caused by issue #1. Since we hot-plug the tenant
> >>> network for the VIP, one of the first steps after the worker connects
> >>> to the amphora agent is finishing the required configuration of the
> >>> VIP interface inside the network namespace on the amphroa.
> >>>
> > Thanks for the hint on the workflow of this. I hadn't gotten deep
> > enough into the code to find that yet, but I suspected it was blocking
> > since the namespace never got created either. Thanks
> >
> >>> If I remember correctly, you are attempting to configure Octavia with
> >>> the dual CA option (which is good for non-development use).
> >>>
> >>> This is what I have for notes:
> >>>
> >>> [certificates] gets the following:
> >>> cert_generator = local_cert_generator
> >>> ca_certificate = server CA's "server.pem" file
> >>> ca_private_key = server CA's "server.key" file
> >>> ca_private_key_passphrase = pass phrase for ca_private_key
> >>>    [controller_worker]
> >>>    client_ca = Client CA's ca_cert file
> >>>    [haproxy_amphora]
> >>> client_cert = Client CA's client.pem file (I think with it's key
> >>> concatenated is what rm_work said the other day)
> >>> server_ca = Server CA's ca_cert file
> >>>
> > This is all very helpful. It's a bit difficult to know what goes where
> > the way the documentation is written presently. For something that's
> > going to be the defacto standard for loadbalancing, we as a community
> > need to do a better job of documenting how to set up, configure, and
> > manage this in production. I'm trying to capture my lessons learned
> > and processes as I go to help with that if I can.
> >
> > -Erik
> >
> >>> That said, I can probably run through this and write something up next
> >>> week that is more step-by-step/detailed.
> >>>
> >>> Michael
> >>>
> >>> On Fri, Oct 19, 2018 at 2:31 PM Erik McCormick
> >>> <emccormick at cirrusseven.com> wrote:
> >>>> Apologies for cross-posting, but in the event that these might be
> >>>> worth filing as bugs, I wanted the Octavia devs to see it as well...
> >>>>
> >>>> I've been wrestling with getting Octavia up and running and have
> >>>> become stuck on two issues. I'm hoping someone has run into these
> >>>> before. My google foo has come up empty.
> >>>>
> >>>> Issue 1:
> >>>> When the Octavia controller tries to poll the amphora instance, it
> >>>> tries repeatedly and eventually fails. The error on the controller
> >>>> side is:
> >>>>
> >>>> 2018-10-19 14:17:39.181 26 ERROR
> >>>> octavia.amphorae.drivers.haproxy.rest_api_driver [-] Connection
> >>>> retries (currently set to 300) exhausted.  The amphora is unavailable.
> >>>> Reason: HTTPSConnectionPool(host='10.7.0.112', port=9443): Max retries
> >>>> exceeded with url: /0.5/plug/vip/10.250.20.15 (Caused by
> >>>> SSLError(SSLError("bad handshake: Error([('rsa routines',
> >>>> 'RSA_padding_check_PKCS1_type_1', 'invalid padding'), ('rsa routines',
> >>>> 'rsa_ossl_public_decrypt', 'padding check failed'), ('asn1 encoding
> >>>> routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines',
> >>>> 'tls_process_server_certificate', 'certificate verify
> >>>> failed')],)",),)): SSLError: HTTPSConnectionPool(host='10.7.0.112',
> >>>> port=9443): Max retries exceeded with url: /0.5/plug/vip/10.250.20.15
> >>>> (Caused by SSLError(SSLError("bad handshake: Error([('rsa routines',
> >>>> 'RSA_padding_check_PKCS1_type_1', 'invalid padding'), ('rsa routines',
> >>>> 'rsa_ossl_public_decrypt', 'padding check failed'), ('asn1 encoding
> >>>> routines', 'ASN1_item_verify', 'EVP lib'), ('SSL routines',
> >>>> 'tls_process_server_certificate', 'certificate verify
> >>>> failed')],)",),))
> >>>>
> >>>> On the amphora side I see:
> >>>> [2018-10-19 17:52:54 +0000] [1331] [DEBUG] Error processing SSL request.
> >>>> [2018-10-19 17:52:54 +0000] [1331] [DEBUG] Invalid request from
> >>>> ip=::ffff:10.7.0.40: [SSL: SSL_HANDSHAKE_FAILURE] ssl handshake
> >>>> failure (_ssl.c:1754)
> >>>>
> >>>> I've generated certificates both with the script in the Octavia git
> >>>> repo, and with the Openstack Ansible playbook. I can see that they are
> >>>> present in /etc/octavia/certs.
> >>>>
> >>>> I'm using the Kolla (Queens) containers for the control plane so I'm
> >>>> sure I've satisfied all the python library constraints.
> >>>>
> >>>> Issue 2:
> >>>> I"m not sure how it gets configured, but the tenant network interface
> >>>> (ens6) never comes up. I can spawn other instances on that network
> >>>> with no issue, and I can see that Neutron has the port attached to the
> >>>> instance. However, in the instance this is all I get:
> >>>>
> >>>> ubuntu at amphora-33e0aab3-8bc4-4fcb-bc42-b9b36afb16d4:~$ ip a
> >>>> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> >>>> group default qlen 1
> >>>>       link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> >>>>       inet 127.0.0.1/8 scope host lo
> >>>>          valid_lft forever preferred_lft forever
> >>>>       inet6 ::1/128 scope host
> >>>>          valid_lft forever preferred_lft forever
> >>>> 2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc pfifo_fast
> >>>> state UP group default qlen 1000
> >>>>       link/ether fa:16:3e:30:c4:60 brd ff:ff:ff:ff:ff:ff
> >>>>       inet 10.7.0.112/16 brd 10.7.255.255 scope global ens3
> >>>>          valid_lft forever preferred_lft forever
> >>>>       inet6 fe80::f816:3eff:fe30:c460/64 scope link
> >>>>          valid_lft forever preferred_lft forever
> >>>> 3: ens6: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group
> >>>> default qlen 1000
> >>>>       link/ether fa:16:3e:89:a2:7f brd ff:ff:ff:ff:ff:ff
> >>>>
> >>>> There's no evidence of the interface anywhere else including udev rules.
> >>>>
> >>>> Any help with either or both issues would be greatly appreciated.
> >>>>
> >>>> Cheers,
> >>>> Erik
> >>>>
> >>>> __________________________________________________________________________
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