2 Commits

Author SHA1 Message Date
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