Merge "Add full support for fernet"

24 files changed, 384 insertions, 12 deletions

diff --git a/ansible/group_vars/all.yml b/ansible/group_vars/all.yml
index 97943fd14..d6e25ad77 100644
--- a/ansible/group_vars/all.yml
+++ b/ansible/group_vars/all.yml
@@ -131,6 +131,7 @@ haproxy_stats_port: "1984"
 
 keystone_public_port: "5000"
 keystone_admin_port: "35357"
+keystone_ssh_port: "8023"
 
 glance_api_port: "9292"
 glance_registry_port: "9191"
@@ -282,6 +283,13 @@ keystone_internal_url: "{{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ k
 keystone_public_url: "{{ public_protocol }}://{{ kolla_external_fqdn }}:{{ keystone_public_port }}/v3"
 
 
+#####################################
+# Keystone - Identity Service options
+#####################################
+keystone_token_provider: "uuid"
+fernet_token_expiry: 86400
+
+
 #######################
 # Glance options
 #######################
diff --git a/ansible/roles/keystone/defaults/main.yml b/ansible/roles/keystone/defaults/main.yml
index ba8ec9c37..0fda77a9a 100644
--- a/ansible/roles/keystone/defaults/main.yml
+++ b/ansible/roles/keystone/defaults/main.yml
@@ -10,12 +10,27 @@ keystone_database_address: "{{ kolla_internal_fqdn }}:{{ database_port }}"
 
 
 ####################
+# Fernet
+####################
+keystone_username: "keystone"
+keystone_groupname: "keystone"
+
+
+####################
 # Docker
 ####################
 keystone_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ kolla_install_type }}-keystone"
 keystone_tag: "{{ openstack_release }}"
 keystone_image_full: "{{ keystone_image }}:{{ keystone_tag }}"
 
+keystone_fernet_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ kolla_install_type }}-keystone-fernet"
+keystone_fernet_tag: "{{ openstack_release }}"
+keystone_fernet_image_full: "{{ keystone_fernet_image }}:{{ keystone_fernet_tag }}"
+
+keystone_ssh_image: "{{ docker_registry ~ '/' if docker_registry else '' }}{{ docker_namespace }}/{{ kolla_base_distro }}-{{ kolla_install_type }}-keystone-ssh"
+keystone_ssh_tag: "{{ openstack_release }}"
+keystone_ssh_image_full: "{{ keystone_ssh_image }}:{{ keystone_ssh_tag }}"
+
 
 ####################
 # OpenStack
diff --git a/ansible/roles/keystone/files/fernet_rotate_cron_generator.py b/ansible/roles/keystone/files/fernet_rotate_cron_generator.py
new file mode 100644
index 000000000..da468a851
--- /dev/null
+++ b/ansible/roles/keystone/files/fernet_rotate_cron_generator.py
@@ -0,0 +1,107 @@
+#!/usr/bin/python
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This module creates a list of cron intervals for a node in a group of nodes
+# to ensure each node runs a cron in round robbin style.
+
+from __future__ import print_function
+import argparse
+import json
+import sys
+
+MINUTE_SPAN = 1
+HOUR_SPAN = 60
+DAY_SPAN = 24 * HOUR_SPAN
+WEEK_SPAN = 7 * DAY_SPAN
+
+
+def json_exit(msg=None, failed=False, changed=False):
+    if type(msg) is not dict:
+        msg = {'msg': str(msg)}
+    msg.update({'failed': failed, 'changed': changed})
+    print(json.dumps(msg))
+    sys.exit()
+
+
+def generate(host_index, total_hosts, total_rotation_mins):
+    min = '*'
+    hour = '*'
+    day = '*'
+    crons = []
+
+    if host_index >= total_hosts:
+        return crons
+
+    rotation_frequency = total_rotation_mins // total_hosts
+    cron_min = rotation_frequency * host_index
+
+    # Build crons for a week period
+    if total_rotation_mins == WEEK_SPAN:
+        day = cron_min // DAY_SPAN
+        hour = (cron_min % DAY_SPAN) // HOUR_SPAN
+        min = cron_min % HOUR_SPAN
+        crons.append({'min': min, 'hour': hour, 'day': day})
+
+    # Build crons for a day period
+    elif total_rotation_mins == DAY_SPAN:
+        hour = cron_min // HOUR_SPAN
+        min = cron_min % HOUR_SPAN
+        crons.append({'min': min, 'hour': hour, 'day': day})
+
+    # Build crons for multiple of an hour
+    elif total_rotation_mins % HOUR_SPAN == 0:
+        for multiple in range(1, DAY_SPAN // total_rotation_mins + 1):
+            time = cron_min
+            if multiple > 1:
+                time += total_rotation_mins * (multiple - 1)
+
+            hour = time // HOUR_SPAN
+            min = time % HOUR_SPAN
+            crons.append({'min': min, 'hour': hour, 'day': day})
+
+    # Build crons for multiple of a minute
+    elif total_rotation_mins % MINUTE_SPAN == 0:
+        for multiple in range(1, HOUR_SPAN // total_rotation_mins + 1):
+            time = cron_min
+            if multiple > 1:
+                time += total_rotation_mins * (multiple - 1)
+
+            min = time // MINUTE_SPAN
+            crons.append({'min': min, 'hour': hour, 'day': day})
+
+    return crons
+
+
+def main():
+    parser = argparse.ArgumentParser(description='''Creates a list of cron
+        intervals for a node in a group of nodes to ensure each node runs
+        a cron in round robbin style.''')
+    parser.add_argument('-t', '--time',
+                        help='Time in seconds for a token rotation cycle',
+                        required=True,
+                        type=int)
+    parser.add_argument('-i', '--index',
+                        help='Index of host starting from 0',
+                        required=True,
+                        type=int)
+    parser.add_argument('-n', '--number',
+                        help='Number of tokens that should exist',
+                        required=True,
+                        type=int)
+    args = parser.parse_args()
+    json_exit({'cron_jobs': generate(args.index, args.number, args.time)})
+
+
+if __name__ == "__main__":
+    main()
diff --git a/ansible/roles/keystone/tasks/config.yml b/ansible/roles/keystone/tasks/config.yml
index cfca7dbad..65ceb1a95 100644
--- a/ansible/roles/keystone/tasks/config.yml
+++ b/ansible/roles/keystone/tasks/config.yml
@@ -14,6 +14,8 @@
     recurse: yes
   with_items:
     - "keystone"
+    - "keystone-fernet"
+    - "keystone-ssh"
 
 - name: Creating Keystone Domain directory
   file:
@@ -30,6 +32,8 @@
     dest: "{{ node_config_directory }}/{{ item }}/config.json"
   with_items:
     - "keystone"
+    - "keystone-fernet"
+    - "keystone-ssh"
 
 - name: Copying over keystone.conf
   merge_configs:
@@ -45,6 +49,8 @@
     dest: "{{ node_config_directory }}/{{ item }}/keystone.conf"
   with_items:
     - "keystone"
+    - "keystone-fernet"
+    - "keystone-ssh"
 
 - name: Copying Keystone Domain specific settings
   copy:
@@ -68,3 +74,34 @@
     - "{{ node_custom_config }}/keystone/{{ inventory_hostname }}/wsgi-keystone.conf"
     - "{{ node_custom_config }}/keystone/wsgi-keystone.conf"
     - "wsgi-keystone.conf.j2"
+
+- name: Generate the required cron jobs for the node
+  local_action: "command python {{ role_path }}/files/fernet_rotate_cron_generator.py -t {{ (fernet_token_expiry | int) // 60 }} -i {{ groups['keystone'].index(inventory_hostname) }} -n {{ (groups['keystone'] | length) }}"
+  register: cron_jobs_json
+  when: keystone_token_provider == 'fernet'
+
+- name: Save the returned from cron jobs for building the crontab
+  set_fact:
+    cron_jobs: "{{ (cron_jobs_json.stdout | from_json).cron_jobs }}"
+  when: keystone_token_provider == 'fernet'
+
+- name: Copying files for keystone-fernet
+  template:
+    src: "{{ item.src }}"
+    dest: "{{ node_config_directory }}/keystone-fernet/{{ item.dest }}"
+  with_items:
+    - { src: "crontab.j2", dest: "crontab" }
+    - { src: "fernet-rotate.sh.j2", dest: "fernet-rotate.sh" }
+    - { src: "fernet-node-sync.sh.j2", dest: "fernet-node-sync.sh" }
+  when: keystone_token_provider == 'fernet'
+
+- name: Copying files for keystone-ssh
+  template:
+    src: "{{ item.src }}"
+    dest: "{{ node_config_directory }}/keystone-ssh/{{ item.dest }}"
+  with_items:
+    - { src: "sshd_config.j2", dest: "sshd_config" }
+    - { src: "id_rsa", dest: "id_rsa" }
+    - { src: "id_rsa.pub", dest: "id_rsa.pub" }
+    - { src: "ssh_config.j2", dest: "ssh_config" }
+  when: keystone_token_provider == 'fernet'
diff --git a/ansible/roles/keystone/tasks/deploy.yml b/ansible/roles/keystone/tasks/deploy.yml
index 10a7a1bf5..9ccf17b9a 100644
--- a/ansible/roles/keystone/tasks/deploy.yml
+++ b/ansible/roles/keystone/tasks/deploy.yml
@@ -8,6 +8,11 @@
 - include: start.yml
   when: inventory_hostname in groups['keystone']
 
+- include: init_fernet.yml
+  when:
+    - inventory_hostname in groups['keystone']
+    - keystone_token_provider == 'fernet'
+
 - include: register.yml
   when: inventory_hostname in groups['keystone']
 
diff --git a/ansible/roles/keystone/tasks/do_reconfigure.yml b/ansible/roles/keystone/tasks/do_reconfigure.yml
index a12287532..2eb6fdba7 100644
--- a/ansible/roles/keystone/tasks/do_reconfigure.yml
+++ b/ansible/roles/keystone/tasks/do_reconfigure.yml
@@ -1,4 +1,17 @@
 ---
+- name: Set variable for keystone components used in reconfigure
+  set_fact:
+    keystone_items:
+      - { name: keystone, group: keystone }
+
+- name: Add fernet related components to variable if fernet is enabled
+  set_fact:
+    keystone_fernet_items:
+      - { name: keystone_fernet, group: keystone }
+      - { name: keystone_ssh, group: keystone }
+    keystone_items: "{{ keystone_items + keystone_fernet_items }}"
+  when: keystone_token_provider == 'fernet'
+
 - name: Ensuring the containers up
   kolla_docker:
     name: "{{ item.name }}"
@@ -6,8 +19,7 @@
   register: container_state
   failed_when: container_state.Running == false
   when: inventory_hostname in groups[item.group]
-  with_items:
-    - { name: keystone, group: keystone }
+  with_items: keystone_items
 
 - include: config.yml
 
@@ -17,8 +29,7 @@
   failed_when: false
   register: check_results
   when: inventory_hostname in groups[item.group]
-  with_items:
-    - { name: keystone, group: keystone }
+  with_items: keystone_items
 
 # NOTE(jeffrey4l): when config_strategy == 'COPY_ALWAYS'
 # and container env['KOLLA_CONFIG_STRATEGY'] == 'COPY_ONCE',
@@ -29,8 +40,7 @@
     action: "get_container_env"
   register: container_envs
   when: inventory_hostname in groups[item.group]
-  with_items:
-    - { name: keystone, group: keystone }
+  with_items: keystone_items
 
 - name: Remove the containers
   kolla_docker:
@@ -42,7 +52,7 @@
     - item[2]['rc'] == 1
     - inventory_hostname in groups[item[0]['group']]
   with_together:
-    - [{ name: keystone, group: keystone }]
+    - [keystone_items]
     - "{{ container_envs.results }}"
     - "{{ check_results.results }}"
 
@@ -59,6 +69,6 @@
     - item[2]['rc'] == 1
     - inventory_hostname in groups[item[0]['group']]
   with_together:
-    - [{ name: keystone, group: keystone }]
+    - [keystone_items]
     - "{{ container_envs.results }}"
     - "{{ check_results.results }}"
diff --git a/ansible/roles/keystone/tasks/init_fernet.yml b/ansible/roles/keystone/tasks/init_fernet.yml
new file mode 100644
index 000000000..0d2bb0076
--- /dev/null
+++ b/ansible/roles/keystone/tasks/init_fernet.yml
@@ -0,0 +1,15 @@
+---
+- name: Initialise fernet key authentication
+  command: "docker exec -t keystone_fernet kolla_keystone_bootstrap {{ keystone_username }} {{ keystone_groupname }}"
+  register: fernet_create
+  changed_when: "{{ fernet_create.stdout.find('localhost | SUCCESS => ') != -1 and (fernet_create.stdout.split('localhost | SUCCESS => ')[1]|from_json).changed }}"
+  until: "(fernet_create.stdout.split()[2] == 'SUCCESS') or (fernet_create.stdout.find('Key repository is already initialized') != -1)"
+  retries: 10
+  delay: 5
+  run_once: True
+  delegate_to: "{{ groups['keystone'][0] }}"
+
+- name: Run key distribution
+  command: docker exec -t keystone_fernet /usr/bin/fernet-rotate.sh
+  run_once: True
+  delegate_to: "{{ groups['keystone'][0] }}"
\ No newline at end of file
diff --git a/ansible/roles/keystone/tasks/pull.yml b/ansible/roles/keystone/tasks/pull.yml
index b8c067236..544940070 100644
--- a/ansible/roles/keystone/tasks/pull.yml
+++ b/ansible/roles/keystone/tasks/pull.yml
@@ -5,3 +5,21 @@
     common_options: "{{ docker_common_options }}"
     image: "{{ keystone_image_full }}"
   when: inventory_hostname in groups['keystone']
+
+- name: Pulling keystone_fernet image
+  kolla_docker:
+    action: "pull_image"
+    common_options: "{{ docker_common_options }}"
+    image: "{{ keystone_fernet_image_full }}"
+  when:
+    - inventory_hostname in groups['keystone']
+    - keystone_token_provider == 'fernet'
+
+- name: Pulling keystone_ssh image
+  kolla_docker:
+    action: "pull_image"
+    common_options: "{{ docker_common_options }}"
+    image: "{{ keystone_ssh_image_full }}"
+  when:
+    - inventory_hostname in groups['keystone']
+    - keystone_token_provider == 'fernet'
\ No newline at end of file
diff --git a/ansible/roles/keystone/tasks/start.yml b/ansible/roles/keystone/tasks/start.yml
index 3108d1292..0b797d441 100644
--- a/ansible/roles/keystone/tasks/start.yml
+++ b/ansible/roles/keystone/tasks/start.yml
@@ -1,14 +1,49 @@
 ---
+- name: Set variable for inital keystone volumes
+  set_fact:
+    keystone_volumes:
+      - "{{ node_config_directory }}/keystone/:{{ container_config_directory }}/:ro"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "kolla_logs:/var/log/kolla/"
+
+- name: Add fernet volume to keystone volumes variable if fernet enabled
+  set_fact:
+    keystone_volumes: "{{ keystone_volumes + [\"keystone_fernet_tokens:/etc/keystone/fernet-keys\"] }}"
+  when: keystone_token_provider == 'fernet'
+
 - name: Starting keystone container
   kolla_docker:
     action: "start_container"
     common_options: "{{ docker_common_options }}"
     image: "{{ keystone_image_full }}"
     name: "keystone"
+    volumes: "{{ keystone_volumes }}"
+
+- name: Wait for keystone startup
+  wait_for: host={{ kolla_internal_fqdn }} port={{ keystone_admin_port }}
+
+- name: Starting keystone-ssh container
+  kolla_docker:
+    action: "start_container"
+    common_options: "{{ docker_common_options }}"
+    image: "{{ keystone_ssh_image_full }}"
+    name: "keystone_ssh"
     volumes:
-      - "{{ node_config_directory }}/keystone/:{{ container_config_directory }}/:ro"
+      - "{{ node_config_directory }}/keystone-ssh/:{{ container_config_directory }}/:ro"
       - "/etc/localtime:/etc/localtime:ro"
       - "kolla_logs:/var/log/kolla/"
+      - "keystone_fernet_tokens:/etc/keystone/fernet-keys"
+  when: keystone_token_provider == 'fernet'
 
-- name: Wait for keystone startup
-  wait_for: host={{ kolla_internal_fqdn }} port={{ keystone_admin_port }}
+- name: Starting keystone-fernet container
+  kolla_docker:
+    action: "start_container"
+    common_options: "{{ docker_common_options }}"
+    image: "{{ keystone_fernet_image_full }}"
+    name: "keystone_fernet"
+    volumes:
+      - "{{ node_config_directory }}/keystone-fernet/:{{ container_config_directory }}/:ro"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "kolla_logs:/var/log/kolla/"
+      - "keystone_fernet_tokens:/etc/keystone/fernet-keys"
+  when: keystone_token_provider == 'fernet'
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/crontab.j2 b/ansible/roles/keystone/templates/crontab.j2
new file mode 100644
index 000000000..967309793
--- /dev/null
+++ b/ansible/roles/keystone/templates/crontab.j2
@@ -0,0 +1,3 @@
+{% for cron_job in cron_jobs %}
+{{ cron_job['min'] }} {{ cron_job['hour'] }} * * {{ cron_job['day'] }} /usr/bin/fernet-rotate.sh
+{% endfor %}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/fernet-node-sync.sh.j2 b/ansible/roles/keystone/templates/fernet-node-sync.sh.j2
new file mode 100644
index 000000000..ffbd7c7dd
--- /dev/null
+++ b/ansible/roles/keystone/templates/fernet-node-sync.sh.j2
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+# Get data on the fernet tokens
+TOKEN_CHECK=$(/usr/bin/fetch_fernet_tokens.py -t {{ fernet_token_expiry }} -n {{ (groups['keystone'] | length) + 1 }})
+
+# Ensure the primary token exists and is not stale
+if $(echo "$TOKEN_CHECK" | grep -q '"update_required":"false"'); then
+    exit 0;
+fi
+
+# For each host node sync tokens
+{% for host in groups['keystone'] %}
+{% if inventory_hostname != host %}
+/usr/bin/rsync -azu --delete -e 'ssh -i /var/lib/keystone/.ssh/id_rsa -p {{ keystone_ssh_port }}' keystone@{{ host }}:/etc/keystone/fernet-keys/ /etc/keystone/fernet-keys
+{% endif %}
+{% endfor %}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/fernet-rotate.sh.j2 b/ansible/roles/keystone/templates/fernet-rotate.sh.j2
new file mode 100644
index 000000000..e79b8909d
--- /dev/null
+++ b/ansible/roles/keystone/templates/fernet-rotate.sh.j2
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+keystone-manage --config-file /etc/keystone/keystone.conf fernet_rotate --keystone-user {{ keystone_username }} --keystone-group {{ keystone_groupname }}
+
+{% for host in groups['keystone'] %}
+{% if inventory_hostname != host %}
+/usr/bin/rsync -az -e 'ssh -i /var/lib/keystone/.ssh/id_rsa -p {{ keystone_ssh_port }}' --delete /etc/keystone/fernet-keys/ keystone@{{ host }}:/etc/keystone/fernet-keys
+{% endif %}
+{% endfor %}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/id_rsa b/ansible/roles/keystone/templates/id_rsa
new file mode 100644
index 000000000..bdce5093e
--- /dev/null
+++ b/ansible/roles/keystone/templates/id_rsa
@@ -0,0 +1 @@
+{{ keystone_ssh_key.private_key }}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/id_rsa.pub b/ansible/roles/keystone/templates/id_rsa.pub
new file mode 100644
index 000000000..907b0e7e7
--- /dev/null
+++ b/ansible/roles/keystone/templates/id_rsa.pub
@@ -0,0 +1 @@
+{{ keystone_ssh_key.public_key }}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/keystone-fernet.json.j2 b/ansible/roles/keystone/templates/keystone-fernet.json.j2
new file mode 100644
index 000000000..3066d2ef6
--- /dev/null
+++ b/ansible/roles/keystone/templates/keystone-fernet.json.j2
@@ -0,0 +1,23 @@
+{% set cron_cmd = 'cron -f' if kolla_base_distro in ['ubuntu', 'debian'] else 'crond -s -n' %}
+{
+    "command": "{{ cron_cmd }}",
+    "config_files": [{
+            "source": "{{ container_config_directory }}/crontab",
+            "dest": "/var/spool/cron/crontabs/root/fernet-cron",
+            "owner": "root",
+            "perm": "0644"
+        },
+        {
+            "source": "{{ container_config_directory }}/fernet-rotate.sh",
+            "dest": "/usr/bin/fernet-rotate.sh",
+            "owner": "root",
+            "perm": "0755"
+        },
+        {
+            "source": "{{ container_config_directory }}/fernet-node-sync.sh",
+            "dest": "/usr/bin/fernet-node-sync.sh",
+            "owner": "root",
+            "perm": "0755"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/keystone-ssh.json.j2 b/ansible/roles/keystone/templates/keystone-ssh.json.j2
new file mode 100644
index 000000000..c38fd6d62
--- /dev/null
+++ b/ansible/roles/keystone/templates/keystone-ssh.json.j2
@@ -0,0 +1,29 @@
+{
+    "command": "/usr/sbin/sshd -D",
+    "config_files": [
+        {
+            "source": "{{ container_config_directory }}/sshd_config",
+            "dest": "/etc/ssh/sshd_config",
+            "owner": "root",
+            "perm": "0644"
+        },
+        {
+            "source": "{{ container_config_directory }}/ssh_config",
+            "dest": "/var/lib/keystone/.ssh/config",
+            "owner": "keystone",
+            "perm": "0600"
+        },
+        {
+            "source": "{{ container_config_directory }}/id_rsa",
+            "dest": "/var/lib/keystone/.ssh/id_rsa",
+            "owner": "keystone",
+            "perm": "0600"
+        },
+        {
+            "source": "{{ container_config_directory }}/id_rsa.pub",
+            "dest": "/var/lib/keystone/.ssh/authorized_keys",
+            "owner": "keystone",
+            "perm": "0600"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/keystone.conf.j2 b/ansible/roles/keystone/templates/keystone.conf.j2
index 6e8bbf450..fa1013369 100644
--- a/ansible/roles/keystone/templates/keystone.conf.j2
+++ b/ansible/roles/keystone/templates/keystone.conf.j2
@@ -16,6 +16,15 @@ domain_specific_drivers_enabled = true
 domain_config_dir = /etc/keystone/domains
 {% endif %}
 
+{% if keystone_token_provider == 'fernet' %}
+[token]
+provider = {{ keystone_token_provider }}
+expiration = {{ fernet_token_expiry }}
+
+[fernet_tokens]
+max_active_keys = {{ (groups['keystone'] | length) + 1 }}
+{% endif %}
+
 [cache]
 backend = oslo_cache.memcache_pool
 enabled = True
diff --git a/ansible/roles/keystone/templates/ssh_config.j2 b/ansible/roles/keystone/templates/ssh_config.j2
new file mode 100644
index 000000000..f30dee26d
--- /dev/null
+++ b/ansible/roles/keystone/templates/ssh_config.j2
@@ -0,0 +1,4 @@
+Host {% for host in groups['keystone'] %}{% if inventory_hostname != host %}{{ host }} {% endif %}{% endfor %}
+  StrictHostKeyChecking no
+  UserKnownHostsFile /dev/null
+  Port {{ keystone_ssh_port }}
\ No newline at end of file
diff --git a/ansible/roles/keystone/templates/sshd_config.j2 b/ansible/roles/keystone/templates/sshd_config.j2
new file mode 100644
index 000000000..8ccb34062
--- /dev/null
+++ b/ansible/roles/keystone/templates/sshd_config.j2
@@ -0,0 +1,5 @@
+Port {{ keystone_ssh_port }}
+ListenAddress {{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
+
+SyslogFacility AUTHPRIV
+UsePAM yes
\ No newline at end of file
diff --git a/ansible/roles/prechecks/tasks/service_checks.yml b/ansible/roles/prechecks/tasks/service_checks.yml
index 42335ab39..b275fd4c2 100644
--- a/ansible/roles/prechecks/tasks/service_checks.yml
+++ b/ansible/roles/prechecks/tasks/service_checks.yml
@@ -42,3 +42,9 @@
   register: result
   changed_when: false
   failed_when: result.stdout | regex_replace('(.*ssh_key.*)', '') | search(":")
+
+- name: Checking fernet_token_expiry in globals.yml. Update fernet_token_expiry to allowed value if this task fails
+  local_action: command grep '^[^#]*fernet_token_expiry:\s*\d*' "{{ CONFIG_DIR }}/globals.yml" | sed 's/[^0-9]*//g'
+  register: result
+  changed_when: false
+  failed_when: result.stdout | regex_replace('(60|120|180|240|300|360|600|720|900|1200|1800|3600|7200|10800|14400|21600|28800|43200|86400|604800)', '') | search(".+")
diff --git a/etc/kolla/globals.yml b/etc/kolla/globals.yml
index 7bede69d8..e6d37bd0e 100644
--- a/etc/kolla/globals.yml
+++ b/etc/kolla/globals.yml
@@ -105,6 +105,15 @@ neutron_external_interface: "eth1"
 # Valid options are [ novnc, spice ]
 #nova_console: "novnc"
 
+# Valid options are [ uuid, fernet ]
+#keystone_token_provider: 'uuid'
+# Interval to rotate fernet keys by (in seconds). Must be an interval of
+# 60(1 min), 120(2 min), 180(3 min), 240(4 min), 300(5 min), 360(6 min),
+# 600(10 min), 720(12 min), 900(15 min), 1200(20 min), 1800(30 min),
+# 3600(1 hour), 7200(2 hour), 10800(3 hour), 14400(4 hour), 21600(6 hour),
+# 28800(8 hour), 43200(12 hour), 86400(1 day), 604800(1 week).
+#fernet_token_expiry: 86400
+
 # OpenStack services can be enabled or disabled with these options
 #enable_ceilometer: "no"
 #enable_central_logging: "no"
diff --git a/etc/kolla/passwords.yml b/etc/kolla/passwords.yml
index 18e0b9dc1..c837663f9 100644
--- a/etc/kolla/passwords.yml
+++ b/etc/kolla/passwords.yml
@@ -81,6 +81,10 @@ kolla_ssh_key:
   private_key:
   public_key:
 
+keystone_ssh_key:
+  private_key:
+  public_key:
+
 ####################
 # RabbitMQ options
 ####################
diff --git a/kolla/cmd/genpwd.py b/kolla/cmd/genpwd.py
index b45fa56ad..5ea950d16 100755
--- a/kolla/cmd/genpwd.py
+++ b/kolla/cmd/genpwd.py
@@ -43,7 +43,7 @@ def main():
     uuid_keys = ['ceph_cluster_fsid', 'rbd_secret_uuid']
 
     # SSH key pair
-    ssh_keys = ['kolla_ssh_key', 'nova_ssh_key']
+    ssh_keys = ['kolla_ssh_key', 'nova_ssh_key', 'keystone_ssh_key']
 
     # If these keys are None, leave them as None
     blank_keys = ['docker_registry_password']
diff --git a/releasenotes/notes/add-fernet-support-54ccb88b901d8d8b.yaml b/releasenotes/notes/add-fernet-support-54ccb88b901d8d8b.yaml
new file mode 100644
index 000000000..e765fde01
--- /dev/null
+++ b/releasenotes/notes/add-fernet-support-54ccb88b901d8d8b.yaml
@@ -0,0 +1,3 @@
+---
+features:
+  - Add full support for fernet with distributed token node syncing