4 Commits

Author SHA1 Message Date
Ian Wienand
c9215801f0 Generate ssl check list directly from letsencrypt variables
This autogenerates the list of ssl domains for the ssl-cert-check tool
directly from the letsencrypt list.

The first step is the install-certcheck role that replaces the
puppet-ssl_cert_check module that does the same.  The reason for this
is so that during gate testing we can test this on the test
bridge.openstack.org server, and avoid adding another node as a
requirement for this test.

letsencrypt-request-certs is updated to set a fact
letsencrypt_certcheck_domains for each host that is generating a
certificate.  As described in the comments, this defaults to the first
host specified for the certificate and the listening port can be
indicated (if set, this new port value is stripped when generating
certs as is not necessary for certificate generation).

The new letsencrypt-config-certcheck role runs and iterates all
letsencrypt hosts to build the final list of domains that should be
checked.  This is then extended with the
letsencrypt_certcheck_additional_domains value that covers any hosts
using certificates not provisioned by letsencrypt using this
mechanism.

These additional domains are pre-populated from the openstack.org
domains in the extant check file, minus those openstack.org domain
certificates we are generating via letsencrypt (see
letsencrypt-create-certs/handlers/main.yaml).  Additionally, we
update some of the certificate variables in host_vars that are
listening on port .

As mentioned, bridge.openstack.org is placed in the new certcheck
group for gate testing, so the tool and config file will be deployed
to it.  For production, cacti is added to the group, which is where
the tool currently runs.  The extant puppet installation is disabled,
pending removal in a follow-on change.

Change-Id: Idbe084f13f3684021e8efd9ac69b63fe31484606
2020-05-20 14:27:14 +10:00
Ian Wienand
733122f0df Use handlers for letsencrypt cert updates
This change proposes calling a handler each time a certificate is
created/updated.  The handler name is based on the name of the
certificate given in the letsencrypt_certs variable, as described in
the role documentation.

Because Ansible considers calling a handler with no listeners an error
this means each letsencrypt user will need to provide a handler.

One simple option illustrated here is just to produce a stamp file.
This can facilitate cross-playbook and even cross-orchestration-tool
communication.  For example, puppet or other ansible playbooks can
detect this stamp file and schedule their reloads, etc. then remove
the stamp file.  It is conceivable more complex listeners could be
setup via other roles, etc. should the need arise.

A test is added to make sure the stamp file is created for the
letsencrypt test hosts, which are always generating a new certificate
in the gate test.

Change-Id: I4e0609c4751643d6e0c8d9eaa38f184e0ce5452e
2019-05-14 08:14:51 +10:00
Ian Wienand
86c5bc2b45 letsencrypt: split staging and self-signed generation
We currently only have letsencrypt_test_only as a single flag that
sets tests to use the letsencrypt staging environment and also
generates a self-signed certificate.

However, for initial testing we actually want to fully generate
certificates on hosts, but using the staging environment (i.e. *not*
generate self-signed certs).  Thus we need to split this option into
two, so the gate tests still use staging+self-signed, but in-progress
production hosts can just using the staging flag.

These variables are split, and graphite01.opendev.org is made to
create staging certificates.

Also remove some debugging that is no longer necessary.

Change-Id: I08959ba904f821c9408d8f363542502cd76a30a4
2019-04-10 08:47:32 +10:00
Ian Wienand
afd907c16d letsencrypt support
This change contains the roles and testing for deploying certificates
on hosts using letsencrypt with domain authentication.

From a top level, the process is implemented in the roles as follows:

1) letsencrypt-acme-sh-install

   This role installs the acme.sh tool on hosts in the letsencrypt
   group, along with a small custom driver script to help parse output
   that is used by later roles.

2) letsencrypt-request-certs

   This role runs on each host, and reads a host variable describing
   the certificates required.  It uses the acme.sh tool (via the
   driver) to request the certificates from letsencrypt.  It populates
   a global Ansible variable with the authentication TXT records
   required.

   If the certificate exists on the host and is not within the renewal
   period, it should do nothing.

3) letsencrypt-install-txt-record

   This role runs on the adns server.  It installs the TXT records
   generated in step 2 to the acme.opendev.org domain and then
   refreshes the server.  Hosts wanting certificates will have
   pre-provisioned CNAME records for _acme-challenge.host.opendev.org
   pointing to acme.opendev.org.

4) letsencrypt-create-certs

   This role runs on each host, reading the same variable as in step
   2.  However this time the acme.sh tool is run to authenticate and
   create the certificates, which should now work correctly via the
   TXT records from step 3.  After this, the host will have the
   full certificate material.

Testing is added via testinfra.  For testing purposes requests are
made to the staging letsencrypt servers and a self-signed certificate
is provisioned in step 4 (as the authentication is not available
during CI).  We test that the DNS TXT records are created locally on
the CI adns server, however.

Related-Spec: https://review.openstack.org/587283

Change-Id: I1f66da614751a29cc565b37cdc9ff34d70fdfd3f
2019-04-02 15:31:41 +11:00