initial headscale foo & dns updates

9 files changed, 494 insertions, 14 deletions

diff --git a/roles/nameservers/tasks/main.yml b/roles/nameservers/tasks/main.yml
index e078c00..d52a3b0 100644
--- a/roles/nameservers/tasks/main.yml
+++ b/roles/nameservers/tasks/main.yml
@@ -19,8 +19,8 @@
 
 - name: create primary zone files for primary
   template:
-    src: "../templates/{{ item.zone_file }}.j2"
-    dest: "/etc/bind/zones/{{ item.zone_file }}"
+    src: "../templates/db.{{ item.zone }}.j2"
+    dest: "/etc/bind/zones/db.{{ item.zone }}"
     owner: bind
     group: bind
   with_items: "{{ dns_zones }}"
@@ -37,6 +37,10 @@
     group: bind
   when: inventory_hostname in groups['dnsreplica']
 
+- name: flush dns cache on replicas
+  file: path={{ item }} state=absent
+  with_fileglob: /var/cache/bind/db.*
+
 - name: restart bind9
   service:
     name: bind9
diff --git a/roles/nameservers/templates/db.simponic.xyz.j2 b/roles/nameservers/templates/db.simponic.xyz.j2
index d219beb..13b58c2 100644
--- a/roles/nameservers/templates/db.simponic.xyz.j2
+++ b/roles/nameservers/templates/db.simponic.xyz.j2
@@ -1,6 +1,6 @@
 $TTL    604800
 @       IN      SOA     {{ dns_primary_hostname }}.simponic.xyz. admin.simponic.xyz. (
-                     1704161086         ; Serial
+  {{ ansible_date_time.epoch }}         ; Serial
                           86400         ; Refresh
                           86400         ; Retry
                         2419200         ; Expire
@@ -11,27 +11,34 @@ $TTL    604800
 simponic.xyz.    IN      NS      {{ dns_primary_hostname }}.simponic.xyz.
 simponic.xyz.    IN      NS      {{ dns_replica_hostname }}.simponic.xyz.
 
-; A records for name servers
+;; A Records
+;; ryo
 {{ dns_primary_hostname }}             IN      A      {{ dns_primary_ip }}
+;; nijika
 {{ dns_replica_hostname }}             IN      A      {{ dns_replica_ip }}
 
-;; A Records
 mail.simponic.xyz.	1	IN	A	192.3.248.205
-simponic.xyz.	1	IN	A	129.123.76.14
+johan.simponic.xyz. 1 IN  A 23.95.20.192
+osaka.simponic.xyz. 1 IN  A 129.123.76.14
+
+levi.simponic.xyz.  1 IN  A 23.95.214.176
+simponic.xyz.  1 IN  A 23.95.214.176
 
 ;; CNAME Records
-s1._domainkey.simponic.xyz.	1	IN	CNAME	s1.domainkey.u25709709.wl210.sendgrid.net.
-s2._domainkey.simponic.xyz.	1	IN	CNAME	s2.domainkey.u25709709.wl210.sendgrid.net.
+ash.simponic.xyz.	1	IN	CNAME mail.simponic.xyz.
 static.simponic.xyz.	1	IN	CNAME	simponic.xyz.
 www.simponic.xyz.	1	IN	CNAME	simponic.xyz.
+s1._domainkey.simponic.xyz.	1	IN	CNAME	s1.domainkey.u25709709.wl210.sendgrid.net.
+s2._domainkey.simponic.xyz.	1	IN	CNAME	s2.domainkey.u25709709.wl210.sendgrid.net.
 
 ;; MX Records
 simponic.xyz.	1	IN	MX	10 mail.simponic.xyz.
 
 ;; TXT Records
+dkim._domainkey.simponic.xyz.	1	IN	TXT	"v=DKIM1; p=  MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoNWLcbrcGq0z8f0fSmxLbfK/Q/ZwmnPyJEfljS2VuDIm7DUXahHIFtB8hfZ/WAocoirb8kUHTvTAgmUOXPpNxTDve3tV9S+CBBYHH2c9XBsuaZn/Vi0TR5vbBDuISmlXT6k+2cdq0LO+PYRwJI65t/JWTR5fQlCmVgxbI5gwDYFRZC0Nl5gEwuKw7pdEJg4Pymyox" "i" "zcikaGk/plXj6BDvv9pK1q8Wa+QPIkuBPFvsEh3KSApMP1p5thzHFaeNyCn5PuYEvbgkal0722px6GvYfR2W/APNRztbmWVewXH6kEWCgOYMkmWiYYLgEwz62rq2SzszP1rrl3WjVi26916wIDAQAB"
+simponic.xyz.	1	IN	TXT	"v=spf1 mx ip4:192.3.248.205 ~all"
+
 _acme-challenge.simponic.xyz.	1	IN	TXT	"6GcrSuBAj8pNKqiCBWUIONRJjbDVtOizadBDGngW4-U"
 _acme-challenge.simponic.xyz.	1	IN	TXT	"IErMxNBY3v1Wc3RV06khZXKDC1f9EObYHSXETK5ZKYE"
 _acme-challenge.simponic.xyz.	1	IN	TXT	"3jWQSVbU-SdebeymX58bir5kEHG1dVHRXYE-P_4Qao8"
 _acme-challenge.simponic.xyz.	1	IN	TXT	"LXaVBwQCanWKF4cNxzPHHPM9N-kkjhn8_4r6RsveBqs"
-dkim._domainkey.simponic.xyz.	1	IN	TXT	"v=DKIM1; p=  MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoNWLcbrcGq0z8f0fSmxLbfK/Q/ZwmnPyJEfljS2VuDIm7DUXahHIFtB8hfZ/WAocoirb8kUHTvTAgmUOXPpNxTDve3tV9S+CBBYHH2c9XBsuaZn/Vi0TR5vbBDuISmlXT6k+2cdq0LO+PYRwJI65t/JWTR5fQlCmVgxbI5gwDYFRZC0Nl5gEwuKw7pdEJg4Pymyox" "i" "zcikaGk/plXj6BDvv9pK1q8Wa+QPIkuBPFvsEh3KSApMP1p5thzHFaeNyCn5PuYEvbgkal0722px6GvYfR2W/APNRztbmWVewXH6kEWCgOYMkmWiYYLgEwz62rq2SzszP1rrl3WjVi26916wIDAQAB"
-simponic.xyz.	1	IN	TXT	"v=spf1 mx ip4:192.3.248.205 ~all"
diff --git a/roles/nameservers/templates/named.conf.local.primary.j2 b/roles/nameservers/templates/named.conf.local.primary.j2
index 44665e6..18a0532 100644
--- a/roles/nameservers/templates/named.conf.local.primary.j2
+++ b/roles/nameservers/templates/named.conf.local.primary.j2
@@ -1,7 +1,7 @@
 {% for zone in dns_zones %}
-zone "{{ zone.zone_name }}" {
+zone "{{ zone.zone }}" {
     type master;
-    file "/etc/bind/zones/{{ zone.zone_file }}";
+    file "/etc/bind/zones/db.{{ zone.zone }}";
     allow-transfer { {{ dns_replica_ip }}; };
 };
 {% endfor %}
diff --git a/roles/nameservers/templates/named.conf.local.replica.j2 b/roles/nameservers/templates/named.conf.local.replica.j2
index bb14d7d..1313cba 100644
--- a/roles/nameservers/templates/named.conf.local.replica.j2
+++ b/roles/nameservers/templates/named.conf.local.replica.j2
@@ -1,7 +1,7 @@
 {% for zone in dns_zones %}
-zone "{{ zone.zone_name }}" {
+zone "{{ zone.zone }}" {
     type slave;
-    file "db.{{ zone.zone_name }}";
+    file "db.{{ zone.zone }}";
     masters { {{ dns_primary_ip }}; };
 };
 {% endfor %}
diff --git a/roles/vpn/files/acl.yml b/roles/vpn/files/acl.yml
new file mode 100644
index 0000000..ed97d53
--- /dev/null
+++ b/roles/vpn/files/acl.yml
@@ -0,0 +1 @@
+---
diff --git a/roles/vpn/handlers/main.yml b/roles/vpn/handlers/main.yml
new file mode 100644
index 0000000..4333c5f
--- /dev/null
+++ b/roles/vpn/handlers/main.yml
@@ -0,0 +1,14 @@
+---
+- name: restart headscale service
+  service:
+    name: headscale
+    state: restarted
+    enabled: true
+    daemon-reload: true
+  listen: 'restart headscale'
+
+- name: reload headscale
+  service:
+    name: headscale
+    state: reloaded
+  listen: 'reload headscale'
diff --git a/roles/vpn/tasks/main.yml b/roles/vpn/tasks/main.yml
new file mode 100644
index 0000000..1715886
--- /dev/null
+++ b/roles/vpn/tasks/main.yml
@@ -0,0 +1,103 @@
+---
+## INSTALL
+- name: create headscale user group
+  group:
+    name: '{{ headscale_user_group }}'
+    gid: '{{ headscale_user_gid }}'
+    system: true
+    state: present
+
+- name: create headscale user
+  user:
+    name: '{{ headscale_user_name }}'
+    uid: '{{ headscale_user_uid }}'
+    group: '{{ headscale_user_group }}'
+    shell: /bin/false
+    system: true
+    create_home: false
+
+- name: download headscale binary
+  get_url:
+    url: 'https://github.com/juanfont/headscale/releases/download/v{{ headscale_version }}/headscale_{{ headscale_version }}_linux_{{ headscale_arch }}'
+    dest: '{{ headscale_binary_path }}'
+    owner: '{{ headscale_user_uid }}'
+    group: '{{ headscale_user_gid }}'
+    mode: 0770
+
+- name: ensure headscale directories exist
+  file:
+    path: '{{ item }}'
+    state: directory
+    owner: '{{ headscale_user_name }}'
+    group: '{{ headscale_user_group }}'
+    mode: 0755
+  loop: '{{ headscale_directories }}'
+
+- name: ensure sqlite exists
+  file:
+    path: '{{ headscale_var_data_dir }}/db.sqlite'
+    state: touch
+    owner: '{{ headscale_user_uid }}'
+    group: '{{ headscale_user_gid }}'
+    mode: 0600
+    modification_time: preserve
+    access_time: preserve
+
+- name: copy systemd unit file
+  template:
+    src: '../templates/headscale.service.j2'
+    dest: '/etc/systemd/system/headscale.service'
+    owner: '{{ headscale_user_uid }}'
+    group: '{{ headscale_user_gid }}'
+    mode: 0600
+
+- name: daemon-reload and enable headscale
+  ansible.builtin.systemd_service:
+    state: restarted
+    daemon_reload: true
+    enabled: true
+    name: headscale
+
+## CONFIG
+
+- name: copy configuration file template
+  template:
+    src: "../templates/config.yml.j2"
+    dest: "{{ headscale_config_dir }}/config.yaml"
+    owner: "{{ headscale_user_uid }}"
+    group: "{{ headscale_user_gid }}"
+    mode: "0600"
+  notify: reload headscale
+
+- name: copy acl policies file
+  copy:
+    content: '../files/acl.yml'
+    dest: '{{ headscale_config_dir }}/acl.yaml'
+    owner: '{{ headscale_user_uid }}'
+    group: '{{ headscale_user_gid }}'
+    mode: 0600
+  notify: reload headscale
+
+- name: ensure predefined users exist
+  command:
+    cmd: 'headscale users create {{ item }}'
+  loop: '{{ headscale_users }}'
+  register: user_created
+  changed_when: '"User created" in user_created.stdout'
+
+## ROUTES
+- name: enable routes for node
+  command:
+    cmd: 'headscale routes enable -i {{ item.id }} -r {{ item.routes }}'
+  loop: '{{ headscale_enable_routes }}'
+  loop_control:
+    label: '{{ item.comment | default(item) }}'
+  when: not ansible_check_mode
+
+- name: enable exit nodes
+  command:
+    cmd: 'headscale routes enable -i {{ item.id }} -r 0.0.0.0/0,::/0'
+  loop: '{{ headscale_exit_nodes }}'
+  loop_control:
+    label: '{{ item.comment | default(item) }}'
+  when: not ansible_check_mode
diff --git a/roles/vpn/templates/config.yml.j2 b/roles/vpn/templates/config.yml.j2
new file mode 100644
index 0000000..5105dcd
--- /dev/null
+++ b/roles/vpn/templates/config.yml.j2
@@ -0,0 +1,325 @@
+---
+# headscale will look for a configuration file named `config.yaml` (or `config.json`) in the following order:
+#
+# - `/etc/headscale`
+# - `~/.headscale`
+# - current working directory
+
+# The url clients will connect to.
+# Typically this will be a domain like:
+#
+# https://myheadscale.example.com:443
+#
+server_url: http://127.0.0.1:8080
+
+# Address to listen to / bind to on the server
+#
+# For production:
+# listen_addr: 0.0.0.0:8080
+listen_addr: 127.0.0.1:8080
+
+# Address to listen to /metrics, you may want
+# to keep this endpoint private to your internal
+# network
+#
+metrics_listen_addr: 127.0.0.1:9090
+
+# Address to listen for gRPC.
+# gRPC is used for controlling a headscale server
+# remotely with the CLI
+# Note: Remote access _only_ works if you have
+# valid certificates.
+#
+# For production:
+# grpc_listen_addr: 0.0.0.0:50443
+grpc_listen_addr: 127.0.0.1:50443
+
+# Allow the gRPC admin interface to run in INSECURE
+# mode. This is not recommended as the traffic will
+# be unencrypted. Only enable if you know what you
+# are doing.
+grpc_allow_insecure: false
+
+# The Noise section includes specific configuration for the
+# TS2021 Noise protocol
+noise:
+  # The Noise private key is used to encrypt the
+  # traffic between headscale and Tailscale clients when
+  # using the new Noise-based protocol.
+  private_key_path: /var/lib/headscale/noise_private.key
+
+# List of IP prefixes to allocate tailaddresses from.
+# Each prefix consists of either an IPv4 or IPv6 address,
+# and the associated prefix length, delimited by a slash.
+# It must be within IP ranges supported by the Tailscale
+# client - i.e., subnets of 100.64.0.0/10 and fd7a:115c:a1e0::/48.
+# See below:
+# IPv6: https://github.com/tailscale/tailscale/blob/22ebb25e833264f58d7c3f534a8b166894a89536/net/tsaddr/tsaddr.go#LL81C52-L81C71
+# IPv4: https://github.com/tailscale/tailscale/blob/22ebb25e833264f58d7c3f534a8b166894a89536/net/tsaddr/tsaddr.go#L33
+# Any other range is NOT supported, and it will cause unexpected issues.
+ip_prefixes:
+  - fd7a:115c:a1e0::/48
+  - 100.64.0.0/10
+
+# DERP is a relay system that Tailscale uses when a direct
+# connection cannot be established.
+# https://tailscale.com/blog/how-tailscale-works/#encrypted-tcp-relays-derp
+#
+# headscale needs a list of DERP servers that can be presented
+# to the clients.
+derp:
+  server:
+    # If enabled, runs the embedded DERP server and merges it into the rest of the DERP config
+    # The Headscale server_url defined above MUST be using https, DERP requires TLS to be in place
+    enabled: false
+
+    # Region ID to use for the embedded DERP server.
+    # The local DERP prevails if the region ID collides with other region ID coming from
+    # the regular DERP config.
+    region_id: 999
+
+    # Region code and name are displayed in the Tailscale UI to identify a DERP region
+    region_code: "headscale"
+    region_name: "Headscale Embedded DERP"
+
+    # Listens over UDP at the configured address for STUN connections - to help with NAT traversal.
+    # When the embedded DERP server is enabled stun_listen_addr MUST be defined.
+    #
+    # For more details on how this works, check this great article: https://tailscale.com/blog/how-tailscale-works/
+    stun_listen_addr: "0.0.0.0:3478"
+
+    # Private key used to encrypt the traffic between headscale DERP
+    # and Tailscale clients.
+    # The private key file will be autogenerated if it's missing.
+    #
+    private_key_path: /var/lib/headscale/derp_server_private.key
+
+  # List of externally available DERP maps encoded in JSON
+  urls:
+    - https://controlplane.tailscale.com/derpmap/default
+
+  # Locally available DERP map files encoded in YAML
+  #
+  # This option is mostly interesting for people hosting
+  # their own DERP servers:
+  # https://tailscale.com/kb/1118/custom-derp-servers/
+  #
+  # paths:
+  #   - /etc/headscale/derp-example.yaml
+  paths: []
+
+  # If enabled, a worker will be set up to periodically
+  # refresh the given sources and update the derpmap
+  # will be set up.
+  auto_update_enabled: true
+
+  # How often should we check for DERP updates?
+  update_frequency: 24h
+
+# Disables the automatic check for headscale updates on startup
+disable_check_updates: false
+
+# Time before an inactive ephemeral node is deleted?
+ephemeral_node_inactivity_timeout: 30m
+
+# Period to check for node updates within the tailnet. A value too low will severely affect
+# CPU consumption of Headscale. A value too high (over 60s) will cause problems
+# for the nodes, as they won't get updates or keep alive messages frequently enough.
+# In case of doubts, do not touch the default 10s.
+node_update_check_interval: 10s
+
+# SQLite config
+db_type: sqlite3
+
+# For production:
+db_path: /var/lib/headscale/db.sqlite
+
+# # Postgres config
+# If using a Unix socket to connect to Postgres, set the socket path in the 'host' field and leave 'port' blank.
+# db_type: postgres
+# db_host: localhost
+# db_port: 5432
+# db_name: headscale
+# db_user: foo
+# db_pass: bar
+
+# If other 'sslmode' is required instead of 'require(true)' and 'disabled(false)', set the 'sslmode' you need
+# in the 'db_ssl' field. Refers to https://www.postgresql.org/docs/current/libpq-ssl.html Table 34.1.
+# db_ssl: false
+
+### TLS configuration
+#
+## Let's encrypt / ACME
+#
+# headscale supports automatically requesting and setting up
+# TLS for a domain with Let's Encrypt.
+#
+# URL to ACME directory
+acme_url: https://acme-v02.api.letsencrypt.org/directory
+
+# Email to register with ACME provider
+acme_email: ""
+
+# Domain name to request a TLS certificate for:
+tls_letsencrypt_hostname: ""
+
+# Path to store certificates and metadata needed by
+# letsencrypt
+# For production:
+tls_letsencrypt_cache_dir: /var/lib/headscale/cache
+
+# Type of ACME challenge to use, currently supported types:
+# HTTP-01 or TLS-ALPN-01
+# See [docs/tls.md](docs/tls.md) for more information
+tls_letsencrypt_challenge_type: HTTP-01
+# When HTTP-01 challenge is chosen, letsencrypt must set up a
+# verification endpoint, and it will be listening on:
+# :http = port 80
+tls_letsencrypt_listen: ":http"
+
+## Use already defined certificates:
+tls_cert_path: ""
+tls_key_path: ""
+
+log:
+  # Output formatting for logs: text or json
+  format: text
+  level: info
+
+# Path to a file containg ACL policies.
+# ACLs can be defined as YAML or HUJSON.
+# https://tailscale.com/kb/1018/acls/
+acl_policy_path: ""
+
+## DNS
+#
+# headscale supports Tailscale's DNS configuration and MagicDNS.
+# Please have a look to their KB to better understand the concepts:
+#
+# - https://tailscale.com/kb/1054/dns/
+# - https://tailscale.com/kb/1081/magicdns/
+# - https://tailscale.com/blog/2021-09-private-dns-with-magicdns/
+#
+dns_config:
+  # Whether to prefer using Headscale provided DNS or use local.
+  override_local_dns: true
+
+  # List of DNS servers to expose to clients.
+  nameservers:
+    - 1.1.1.1
+
+  # NextDNS (see https://tailscale.com/kb/1218/nextdns/).
+  # "abc123" is example NextDNS ID, replace with yours.
+  #
+  # With metadata sharing:
+  # nameservers:
+  #   - https://dns.nextdns.io/abc123
+  #
+  # Without metadata sharing:
+  # nameservers:
+  #   - 2a07:a8c0::ab:c123
+  #   - 2a07:a8c1::ab:c123
+
+  # Split DNS (see https://tailscale.com/kb/1054/dns/),
+  # list of search domains and the DNS to query for each one.
+  #
+  # restricted_nameservers:
+  #   foo.bar.com:
+  #     - 1.1.1.1
+  #   darp.headscale.net:
+  #     - 1.1.1.1
+  #     - 8.8.8.8
+
+  # Search domains to inject.
+  domains: []
+
+  # Extra DNS records
+  # so far only A-records are supported (on the tailscale side)
+  # See https://github.com/juanfont/headscale/blob/main/docs/dns-records.md#Limitations
+  # extra_records:
+  #   - name: "grafana.myvpn.example.com"
+  #     type: "A"
+  #     value: "100.64.0.3"
+  #
+  #   # you can also put it in one line
+  #   - { name: "prometheus.myvpn.example.com", type: "A", value: "100.64.0.3" }
+
+  # Whether to use [MagicDNS](https://tailscale.com/kb/1081/magicdns/).
+  # Only works if there is at least a nameserver defined.
+  magic_dns: true
+
+  # Defines the base domain to create the hostnames for MagicDNS.
+  # `base_domain` must be a FQDNs, without the trailing dot.
+  # The FQDN of the hosts will be
+  # `hostname.user.base_domain` (e.g., _myhost.myuser.example.com_).
+  base_domain: example.com
+
+# Unix socket used for the CLI to connect without authentication
+# Note: for production you will want to set this to something like:
+unix_socket: /var/run/headscale/headscale.sock
+unix_socket_permission: "0770"
+#
+# headscale supports experimental OpenID connect support,
+# it is still being tested and might have some bugs, please
+# help us test it.
+# OpenID Connect
+# oidc:
+#   only_start_if_oidc_is_available: true
+#   issuer: "https://your-oidc.issuer.com/path"
+#   client_id: "your-oidc-client-id"
+#   client_secret: "your-oidc-client-secret"
+#   # Alternatively, set `client_secret_path` to read the secret from the file.
+#   # It resolves environment variables, making integration to systemd's
+#   # `LoadCredential` straightforward:
+#   client_secret_path: "${CREDENTIALS_DIRECTORY}/oidc_client_secret"
+#   # client_secret and client_secret_path are mutually exclusive.
+#
+#   # The amount of time from a node is authenticated with OpenID until it
+#   # expires and needs to reauthenticate.
+#   # Setting the value to "0" will mean no expiry.
+#   expiry: 180d
+#
+#   # Use the expiry from the token received from OpenID when the user logged
+#   # in, this will typically lead to frequent need to reauthenticate and should
+#   # only been enabled if you know what you are doing.
+#   # Note: enabling this will cause `oidc.expiry` to be ignored.
+#   use_expiry_from_token: false
+#
+#   # Customize the scopes used in the OIDC flow, defaults to "openid", "profile" and "email" and add custom query
+#   # parameters to the Authorize Endpoint request. Scopes default to "openid", "profile" and "email".
+#
+#   scope: ["openid", "profile", "email", "custom"]
+#   extra_params:
+#     domain_hint: example.com
+#
+#   # List allowed principal domains and/or users. If an authenticated user's domain is not in this list, the
+#   # authentication request will be rejected.
+#
+#   allowed_domains:
+#     - example.com
+#   # Note: Groups from keycloak have a leading '/'
+#   allowed_groups:
+#     - /headscale
+#   allowed_users:
+#     - alice@example.com
+#
+#   # If `strip_email_domain` is set to `true`, the domain part of the username email address will be removed.
+#   # This will transform `first-name.last-name@example.com` to the user `first-name.last-name`
+#   # If `strip_email_domain` is set to `false` the domain part will NOT be removed resulting to the following
+#   user: `first-name.last-name.example.com`
+#
+#   strip_email_domain: true
+
+# Logtail configuration
+# Logtail is Tailscales logging and auditing infrastructure, it allows the control panel
+# to instruct tailscale nodes to log their activity to a remote server.
+logtail:
+  # Enable logtail for this headscales clients.
+  # As there is currently no support for overriding the log server in headscale, this is
+  # disabled by default. Enabling this will make your clients send logs to Tailscale Inc.
+  enabled: false
+
+# Enabling this option makes devices prefer a random port for WireGuard traffic over the
+# default static port 41641. This option is intended as a workaround for some buggy
+# firewall devices. See https://tailscale.com/kb/1181/firewalls/ for more information.
+randomize_client_port: false
diff --git a/roles/vpn/templates/headscale.service.j2 b/roles/vpn/templates/headscale.service.j2
new file mode 100644
index 0000000..46267f0
--- /dev/null
+++ b/roles/vpn/templates/headscale.service.j2
@@ -0,0 +1,26 @@
+[Unit]
+Description=headscale coordination server
+After=syslog.target
+After=network.target
+
+[Service]
+Type=simple
+Environment=GIN_MODE=release
+User={{ headscale_user_name }}
+Group={{ headscale_user_group }}
+ExecStart={{ headscale_binary_path }} serve
+ExecReload=kill -HUP $MAINPID
+Restart=always
+RestartSec=5
+
+# Optional security enhancements
+NoNewPrivileges=yes
+PrivateTmp=yes
+ProtectSystem=strict
+ProtectHome=yes
+ReadWritePaths={{ headscale_var_data_dir }} {{ headscale_pid_dir }}
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+RuntimeDirectory={{ headscale_user_name }}
+
+[Install]
+WantedBy=multi-user.target