From a29efe00e03d8caf94e48605885cad011f2590ff Mon Sep 17 00:00:00 2001
From: Albert Stefanov <aastefanov@outlook.com>
Date: Sat, 17 Feb 2024 11:00:06 +0200
Subject: [PATCH] Keycloak works, add example yml

---
 ansible/.gitignore                            |  1 +
 ansible/group_vars/all/ssh_users.yml          |  6 ++
 .../host_vars/infrahost/keycloak.yml.example  | 23 +++++++
 .../infrahost/postgresql.yml.example          |  2 +
 ansible/roles/auth-server/tasks/keycloak.yml  | 65 +++++++++++++------
 ansible/roles/auth-server/tasks/main.yml      |  4 +-
 .../templates/units/sso-keycloak.container.j2 |  6 +-
 ansible/roles/container-user/tasks/main.yml   | 18 ++---
 .../roles/postgresql-server/tasks/main.yml    | 11 +++-
 ansible/roles/reverse-proxy/files/Caddyfile   | 12 ++++
 ansible/roles/reverse-proxy/handlers/main.yml |  4 ++
 ansible/roles/reverse-proxy/tasks/main.yml    | 25 +++++++
 ansible/tasks/create_postgres_db.yml          | 35 ++++++----
 ansible/tasks/create_vhost.yml                | 27 ++++++++
 ansible/templates/vhost.caddy.j2              | 17 +++++
 15 files changed, 207 insertions(+), 49 deletions(-)
 create mode 100644 ansible/.gitignore
 create mode 100644 ansible/group_vars/all/ssh_users.yml
 create mode 100644 ansible/host_vars/infrahost/keycloak.yml.example
 create mode 100644 ansible/host_vars/infrahost/postgresql.yml.example
 create mode 100644 ansible/roles/reverse-proxy/files/Caddyfile
 create mode 100644 ansible/roles/reverse-proxy/handlers/main.yml
 create mode 100644 ansible/roles/reverse-proxy/tasks/main.yml
 create mode 100644 ansible/tasks/create_vhost.yml
 create mode 100644 ansible/templates/vhost.caddy.j2

diff --git a/ansible/.gitignore b/ansible/.gitignore
new file mode 100644
index 0000000..8180076
--- /dev/null
+++ b/ansible/.gitignore
@@ -0,0 +1 @@
+*.secret.yml
diff --git a/ansible/group_vars/all/ssh_users.yml b/ansible/group_vars/all/ssh_users.yml
new file mode 100644
index 0000000..8520069
--- /dev/null
+++ b/ansible/group_vars/all/ssh_users.yml
@@ -0,0 +1,6 @@
+global_ssh_keys:
+  - albert_rsa
+  - ignisf
+  - zeridon
+  - shteryana
+  - dexxter00
diff --git a/ansible/host_vars/infrahost/keycloak.yml.example b/ansible/host_vars/infrahost/keycloak.yml.example
new file mode 100644
index 0000000..1f1f360
--- /dev/null
+++ b/ansible/host_vars/infrahost/keycloak.yml.example
@@ -0,0 +1,23 @@
+keycloak_config:
+  hostname: auth.openfest.org
+  db:
+    host: host.containers.internal
+    user: keycloak
+    database: keycloak
+    password: slojnaparola
+    access_host: all
+    ansible_host: infrahost
+  podman:
+    user: auth
+    home: /home/auth
+  datadir: /home/auth/keycloak
+  listen_address: 127.0.0.1:9091
+  reverse_proxy:
+    external_url: auth.openfest.org
+    proxy_url: 127.0.0.1:9091
+    ansible_host: infrahost
+    tls:
+      type: internal
+  admin:
+    user: admin
+    password: slojnaparola
diff --git a/ansible/host_vars/infrahost/postgresql.yml.example b/ansible/host_vars/infrahost/postgresql.yml.example
new file mode 100644
index 0000000..62e883f
--- /dev/null
+++ b/ansible/host_vars/infrahost/postgresql.yml.example
@@ -0,0 +1,2 @@
+postgresql:
+  listen_addresses: "*"
diff --git a/ansible/roles/auth-server/tasks/keycloak.yml b/ansible/roles/auth-server/tasks/keycloak.yml
index 4c65dba..07e127a 100644
--- a/ansible/roles/auth-server/tasks/keycloak.yml
+++ b/ansible/roles/auth-server/tasks/keycloak.yml
@@ -3,46 +3,62 @@
 - name: Check parameters
   ansible.builtin.assert:
     that:
-      - keycloak_podman_user_name is defined
-      - keycloak_db_password is defined
+      - keycloak.podman.user is defined
+      - keycloak.db.password is defined
 
 - name: Create PostgreSQL database
-  include_tasks: create_postgres_db.yml
+  ansible.builtin.include_tasks: create_postgres_db.yml
   vars:
-    postgres_username: keycloak
-    postgres_database: keycloak
-    postgres_password: "{{ keycloak_db_password }}" #TODO: change for a password manager
+    user: "{{ keycloak.db.user }}"
+    database: "{{ keycloak.db.database }}"
+    password: "{{ keycloak.db.password }}"
+    access_host: "{{ keycloak.db.access_host | default(omit) }}"
   args:
     apply:
-      delegate_to: "{{ keycloak_db_ansible_host | default(omit) }}"
+      delegate_to: "{{ keycloak.db.ansible_host | default(omit) }}"
 
 - name: Set up container user
-  include_role:
+  ansible.builtin.include_role:
     name: container-user
   vars:
-    podman_user: "{{ keycloak_podman_user_name }}"
-    podman_home: "{{ keycloak_podman_user_home | default(omit) }}"
-    podman_uid: "{{ keycloak_podman_user_uid | default(omit) }}"
-
-      #- name: Create secrets
-      #  containers.podman.podman_secret:
-      #  become: true
-      #  become_user: "{{ keycloak_podman_user_name }}"
+    user: "{{ keycloak.podman.user }}"
+    home: "{{ keycloak.podman.home | default(omit) }}"
+    uid: "{{ keycloak.podman.uid | default(omit) }}"
 
 - name: Create data directories
   ansible.builtin.file:
     state: directory
     path: "{{ item }}"
   with_items:
-    - "{{ keycloak_data_dir }}/keystore/"
+    - "{{ keycloak.datadir }}/keystore/"
 
 - name: Upload unit files
   ansible.builtin.template:
     src: units/sso-keycloak.container.j2
     dest: ~/.config/containers/systemd/sso-keycloak.container
   become: true
-  become_user: "{{ keycloak_podman_user_name }}"
+  become_user: "{{ keycloak.podman.user }}"
 
+- name: Set up podman secrets
+  containers.podman.podman_secret:
+    name: "{{ item.key }}"
+    data: "{{ item.value }}"
+    state: present
+    skip_existing: false
+    force: true
+  vars:
+    secrets:
+      keycloak-admin-user: "{{ keycloak.admin.user }}"
+      keycloak-admin-password: "{{ keycloak.admin.password }}"
+      keycloak-db-host: "{{ keycloak.db.host }}"
+      keycloak-db-name: "{{ keycloak.db.database }}"
+      keycloak-db-user: "{{ keycloak.db.user }}"
+      keycloak-db-password: "{{ keycloak.db.password }}"
+  with_dict: "{{ secrets }}"
+  no_log: true # Secret values
+
+  become: true
+  become_user: "{{ keycloak.podman.user }}"
 
 # Note: enabled in the unit file
 - name: Start Keycloak
@@ -52,4 +68,15 @@
     daemon_reload: true
     state: started
   become: true
-  become_user: "{{ keycloak_podman_user_name }}"
+  become_user: "{{ keycloak.podman.user }}"
+
+- name: Set up reverse proxy
+  ansible.builtin.include_tasks: create_vhost.yml
+  vars:
+    external_url: "{{ keycloak.reverse_proxy.external_url }}"
+    proxy_url: "{{ keycloak.reverse_proxy.proxy_url }}"
+    app_name: "{{ keycloak.reverse_proxy.app_name | default('keycloak') }}"
+    tls: "{{ keycloak.reverse_proxy.tls | default(omit) }}"
+  args:
+    apply:
+      delegate_to: "{{ keycloak.reverse_proxy.ansible_host | default(omit) }}"
diff --git a/ansible/roles/auth-server/tasks/main.yml b/ansible/roles/auth-server/tasks/main.yml
index 611df3b..f679f30 100644
--- a/ansible/roles/auth-server/tasks/main.yml
+++ b/ansible/roles/auth-server/tasks/main.yml
@@ -6,6 +6,4 @@
 - name: Set up Keycloak
   include_tasks: keycloak.yml
   vars:
-    podman_user_name: "{{ keycloak_podman_user_name }}"
-    podman_user_home: "{{ keycloak_podman_user_home | default(omit) }}"
-    podman_user_uid: "{{ keycloak_podman_user_uid | default(omit) }}"
+    keycloak: "{{ keycloak_config }}"
diff --git a/ansible/roles/auth-server/templates/units/sso-keycloak.container.j2 b/ansible/roles/auth-server/templates/units/sso-keycloak.container.j2
index f2f7bd2..e4d1265 100644
--- a/ansible/roles/auth-server/templates/units/sso-keycloak.container.j2
+++ b/ansible/roles/auth-server/templates/units/sso-keycloak.container.j2
@@ -6,7 +6,7 @@ ContainerName=sso-keycloak
 Image=quay.io/keycloak/keycloak:latest
 
 Environment=JAVA_OPTS="-Xms64m -Xmx512m -XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.err.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dstderr.encoding=UTF-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/urandom -XX:+UseG1GC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=80 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:FlightRecorderOptions=stackdepth=512"
-Volume={{ keycloak_data_dir }}/keystore/:/keystore/
+Volume={{ keycloak.datadir }}/keystore/:/keystore/
 
 Secret=keycloak-admin-user,type=env,target=KEYCLOAK_ADMIN
 Secret=keycloak-admin-password,type=env,target=KEYCLOAK_ADMIN_PASSWORD
@@ -18,9 +18,9 @@ Secret=keycloak-db-password,type=env,target=KC_DB_PASSWORD
 Environment=KC_DB=postgres
 Environment=KC_HEALTH_ENABLED=true
 
-Exec=start --features=preview --hostname {{ keycloak_hostname }} --proxy edge
+Exec=start --features=preview --hostname {{ keycloak.hostname }} --proxy edge
 
-PublishPort={{ keycloak_listen_address }}:8080
+PublishPort={{ keycloak.listen_address }}:8080
 AutoUpdate=registry
 [Install]
 WantedBy=default.target
diff --git a/ansible/roles/container-user/tasks/main.yml b/ansible/roles/container-user/tasks/main.yml
index 5cd38e5..12495a7 100644
--- a/ansible/roles/container-user/tasks/main.yml
+++ b/ansible/roles/container-user/tasks/main.yml
@@ -3,7 +3,7 @@
 - name: Check if required parameters are set
   ansible.builtin.assert:
     that:
-      - podman_user_name is defined
+      - user is defined
 
 - name: Set up as container host
   ansible.builtin.include_role:
@@ -11,17 +11,17 @@
 
 - name: Create user
   ansible.builtin.user:
-    name: "{{ podman_user_name }}"
-    home: "{{ podman_user_home | default(omit) }}"
-    uid: "{{ podman_user_uid | default(omit) }}"
+    name: "{{ user }}"
+    home: "{{ home | default(omit) }}"
+    uid: "{{ uid | default(omit) }}"
     state: present
 
 - name: Add public keys for user '{{ podman_user_name }}'
   ansible.posix.authorized_key:
-    user: "{{ podman_user_name }}"
+    user: "{{ user }}"
     key: "{{ lookup('file', '../../access/keys/' + item + '.pub') }}"
     state: present # Note: we don't remove other/existing keys
-  with_items: "{{ global_ssh_keys + (ssh_keys[podman_user_name] | default([])) + (ssh_keys['*'] | default([])) }}"
+  with_items: "{{ global_ssh_keys + (ssh_keys[user] | default([])) + (ssh_keys['*'] | default([])) }}"
 
 
 - name: Create unit files dir
@@ -29,15 +29,15 @@
     path: ~/.config/containers/systemd
     state: directory
   become: true
-  become_user: "{{ podman_user_name }}"
+  become_user: "{{ user }}"
 
 # Note: We check whether lingering is already enabled so we show as OK/skipped instead of changed
 - name: Check if user is lingering
   ansible.builtin.stat:
-    path: "/var/lib/systemd/linger/{{ podman_user_name }}"
+    path: "/var/lib/systemd/linger/{{ user }}"
   register: user_lingering
 
 - name: Enable session lingering
-  ansible.builtin.command: "loginctl enable-linger {{ podman_user_name }}"
+  ansible.builtin.command: "loginctl enable-linger {{ user }}"
   when:
     - not user_lingering.stat.exists
diff --git a/ansible/roles/postgresql-server/tasks/main.yml b/ansible/roles/postgresql-server/tasks/main.yml
index e1845d9..8b5ff85 100644
--- a/ansible/roles/postgresql-server/tasks/main.yml
+++ b/ansible/roles/postgresql-server/tasks/main.yml
@@ -27,4 +27,13 @@
   become_user: postgres
   community.postgresql.postgresql_user:
     name: root
-    role_attr_flags: SUPERUSER
\ No newline at end of file
+    role_attr_flags: SUPERUSER
+
+- name: Change listen addresses
+  community.postgresql.postgresql_set:
+    name: listen_addresses
+    value: "{{ postgresql.listen_addresses }}"
+  become: true
+  become_user: postgres
+  when: postgresql.listen_addresses is defined
+  notify: Restart PostgreSQL
diff --git a/ansible/roles/reverse-proxy/files/Caddyfile b/ansible/roles/reverse-proxy/files/Caddyfile
new file mode 100644
index 0000000..cc7db48
--- /dev/null
+++ b/ansible/roles/reverse-proxy/files/Caddyfile
@@ -0,0 +1,12 @@
+(vhost-access-log) {
+        log {
+                output file /var/log/caddy/{args[0]}-access.log
+        }
+}
+
+# Note: Requires a new caddy version
+#{
+#        persist_config off
+#}
+
+import /etc/caddy/sites-enabled/*.caddy
diff --git a/ansible/roles/reverse-proxy/handlers/main.yml b/ansible/roles/reverse-proxy/handlers/main.yml
new file mode 100644
index 0000000..73bfca2
--- /dev/null
+++ b/ansible/roles/reverse-proxy/handlers/main.yml
@@ -0,0 +1,4 @@
+- name: Reload Caddy
+  ansible.builtin.service:
+    name: caddy
+    state: reloaded
diff --git a/ansible/roles/reverse-proxy/tasks/main.yml b/ansible/roles/reverse-proxy/tasks/main.yml
new file mode 100644
index 0000000..c6965a7
--- /dev/null
+++ b/ansible/roles/reverse-proxy/tasks/main.yml
@@ -0,0 +1,25 @@
+---
+
+- name: Install Caddy
+  ansible.builtin.package:
+    name: caddy
+    state: present
+
+- name: Update Caddyfile
+  ansible.builtin.copy:
+    src: Caddyfile
+    dest: /etc/caddy/Caddyfile
+
+- name: Create site config directories
+  ansible.builtin.file:
+    path: "{{ item }}"
+    state: directory
+  with_items:
+    - /etc/caddy/sites-available
+    - /etc/caddy/sites-enabled
+
+- name: Enable and start the Caddy server
+  ansible.builtin.service:
+    name: caddy.service
+    enabled: true
+    state: started
diff --git a/ansible/tasks/create_postgres_db.yml b/ansible/tasks/create_postgres_db.yml
index 6e6b23c..0fa7b7b 100644
--- a/ansible/tasks/create_postgres_db.yml
+++ b/ansible/tasks/create_postgres_db.yml
@@ -3,9 +3,9 @@
 - name: Check params
   ansible.builtin.assert:
     that:
-      - postgres_username is defined
-      - postgres_database is defined
-      - not(postgres_access_host is defined and postgres_password is defined)
+      - user is defined
+      - database is defined
+      - not(access_host is defined and password is not defined)
 
 - name: Set up PostgreSQL
   ansible.builtin.include_role:
@@ -13,25 +13,32 @@
 
 - name: Create user
   community.postgresql.postgresql_user:
-    name: "{{ postgres_username }}"
-    password: "{{ postgres_password | default(omit) }}"
+    name: "{{ user }}"
+    password: "{{ password | default(omit) }}"
   become: true
   become_user: postgres
 
-- name: Create postgres_database
+- name: Create database
   community.postgresql.postgresql_db:
-    name: "{{ postgres_database }}"
-    owner: "{{ postgres_username }}"
+    name: "{{ database }}"
+    owner: "{{ user }}"
   become: true
   become_user: postgres
-    
 
-- name: Update pg_hba scram
+- name: Get pg_hba.conf location
+  community.postgresql.postgresql_query:
+    query: SHOW hba_file
+  become: true
+  become_user: postgres
+  register: postgres_hba_file_query
+
+- name: Update pg_hba scram authentication
   community.postgresql.postgresql_pg_hba:
     contype: host
-    users: "{{ postgres_username }}"
-    source: "{{ postgres_access_host }}"
-    databases: "{{ postgres_database }}"
+    users: "{{ user }}"
+    source: "{{ access_host }}"
+    databases: "{{ database }}"
     method: "scram-sha-256"
-  when: postgres_access_host is defined
+    dest: "{{ postgres_hba_file_query.query_result[0].hba_file }}"
+  when: access_host is defined
   notify: Restart PostgreSQL
diff --git a/ansible/tasks/create_vhost.yml b/ansible/tasks/create_vhost.yml
new file mode 100644
index 0000000..9ea16ff
--- /dev/null
+++ b/ansible/tasks/create_vhost.yml
@@ -0,0 +1,27 @@
+---
+
+- name: Check params
+  ansible.builtin.assert:
+    that:
+      - app_name is defined
+      - external_url is defined
+      - proxy_url is defined
+      - not(tls.type == "cloudflare" and tls.cloudflare_token is undefined)
+      - not(tls.type == "file" and (tls.cert is undefined or tls.key is undefined))
+      - tls.type is not defined or (tls.type in ['auto', 'internal', 'cloudflare', 'file'] )
+
+- name: Set up Caddy
+  ansible.builtin.include_role: 
+    name: reverse-proxy
+
+- name: Template vhost file
+  ansible.builtin.template:
+    src: vhost.caddy.j2
+    dest: "/etc/caddy/sites-available/{{ app_name }}.caddy"
+
+- name: Symlink vhost
+  ansible.builtin.file:
+    src: "/etc/caddy/sites-available/{{ app_name }}.caddy"
+    dest: "/etc/caddy/sites-enabled/{{ app_name }}.caddy"
+    state: link
+  notify: Reload Caddy
diff --git a/ansible/templates/vhost.caddy.j2 b/ansible/templates/vhost.caddy.j2
new file mode 100644
index 0000000..58b2cd9
--- /dev/null
+++ b/ansible/templates/vhost.caddy.j2
@@ -0,0 +1,17 @@
+{{ external_url }} {
+
+	{% if tls is defined and tls.type != 'auto' %}
+		{% if tls.type == 'internal' %}
+			tls internal
+		{% elif tls.type == 'cloudflare' %}
+			tls {
+				dns cloudflare {{ tls.cloudflare_token }}
+			}
+		{% elif tls.type == 'file' %}
+			tls {{ tls.cert }} {{ tls.key }}
+		{% endif %}
+	{% endif %}
+
+        reverse_proxy {{ proxy_url }}
+        import vhost-access-log {{ app_name }}
+}