Initial role stuff

This also sets up tls-termination for mosquitto

_deprecated/netmaker/meta/main.yml

@@ -0,0 +1,3 @@
+---
+  dependencies: []
+    #- role: docker

_deprecated/netmaker/tasks/join-network.yml

@@ -2,4 +2,6 @@
   when: "netclient.join_network_token is defined"
   command: "netclient join -t {{ netclient.join_network_token }}"
   failed_when: command.rc != 0
+  changed_when: "'starting wireguard' in command.stdout"
   register: command
+  throttle: 1

_deprecated/netmaker/tasks/main.yml

@@ -3,3 +3,6 @@
 - import_tasks: ./install.yml
 
 - import_tasks: ./join-network.yml
+
+- name: Gather facts to get changes
+  ansible.builtin.gather_facts:

_deprecated/netmaker_server/docs/architecture.puml

@@ -30,7 +30,7 @@ component netmaker_server {
   component nm_api
   nm_api -down- nm_api_http
   ng_http --( nm_api_http
-  nm_api -up-( ng_TLS : db-connection to rqlite-master
+  nm_api .up.( ng_TLS : db-connection to rqlite-master
   nm_api --( mq_plain
 }
 

_deprecated/netmaker_server/files/opt/netmaker_server/mosquitto/config/mosquitto.conf

@@ -1,11 +1,11 @@
 per_listener_settings false
 
 listener 8883
+protocol websockets
 allow_anonymous false
-certfile /certs/node.crt
-keyfile /certs/node.key
 
 listener 1883
+protocol websockets
 allow_anonymous false
 
 plugin /usr/lib/mosquitto_dynamic_security.so

_deprecated/netmaker_server/tasks/netmaker.yml

@@ -30,7 +30,7 @@
     headers:
       Authorization: 'Bearer {{ netmaker_creds.master_key }}'
       Content-Type: application/json
-  when: "inventory_hostname == groups['netmaker'][0]"
+  when: "inventory_hostname == groups['netmaker_server'][0]"
   register: default_mesh
   until: "default_mesh is not failed"
   retries: 2
@@ -50,7 +50,7 @@
     headers:
       Authorization: 'Bearer {{ netmaker_creds.master_key }}'
       Content-Type: application/json
-  when: "inventory_hostname == groups['netmaker'][0]"
+  when: "inventory_hostname == groups['netmaker_server'][0]"
   register: default_mesh_key
   until: "default_mesh_key is not failed"
   retries: 2

_deprecated/netmaker_server/templates/docker-compose.yml.template

@@ -33,15 +33,15 @@ services:
 
     -auth         /config.json
 
-{% if inventory_hostname != groups['netmaker'][0] %}
+{% if inventory_hostname != groups['netmaker_server'][0] %}
     -join-as  netmaker
-    -join     https://{{  netmaker_rqlite.http_host }}.{{ groups['netmaker'][0] }}:{{ netmaker_nginx.advertise_port }}
+    -join     https://{{  netmaker_rqlite.http_host }}.{{ groups['netmaker_server'][0] }}:{{ netmaker_nginx.advertise_port }}
 {% endif %}
     "
     # FIXME: /\ \/ Change http -> https
 
   netmaker: # The Primary Server for running Netmaker
-    image: gravitl/netmaker:v0.16.1
+    image: gravitl/netmaker:v0.17.1
     depends_on:
       - rqlite
     cap_add: 
@@ -104,7 +104,7 @@ services:
       - "51821-51830:51821-51830/udp" # wireguard ports
 
   netmaker-ui:  # The Netmaker UI Component
-    image: gravitl/netmaker-ui:v0.16.1
+    image: gravitl/netmaker-ui:v0.17.1
     depends_on:
       - netmaker
     links:
@@ -120,7 +120,6 @@ services:
       - ./mosquitto/config:/mosquitto/config
       - ./mosquitto/data:/mosquitto/data
       - ./mosquitto/logs:/mosquitto/log
-      - "./certs:/certs:ro"
     depends_on:
       - netmaker
     command: ["/mosquitto/config/wait.sh"]

_deprecated/netmaker_server/templates/nginx/passthrough.conf.template

@@ -6,7 +6,7 @@ stream{
         {{ netmaker_ui.host }}.{{ netmaker_base_domain }}   127.0.0.1:8443;
         {{ netmaker_api.host }}.{{ netmaker_base_domain }}  127.0.0.1:8443;
 
-        {{ netmaker_broker.tls_host }}.{{ netmaker_base_domain }}   mosquitto:8883; # todo: tls-terminate?
+        {{ netmaker_broker.tls_host }}.{{ netmaker_base_domain }}   127.0.0.1:8443;
 
         {{ netmaker_rqlite.http_host }}.{{ ansible_facts.nodename }}    127.0.0.1:8443;
         {{ netmaker_rqlite.cluster_host }}.{{ ansible_facts.nodename }}   rqlite:4002;

_deprecated/netmaker_server/templates/nginx/proxy.conf.template

@@ -4,6 +4,8 @@ map $host    $proxy_name {
     {{ netmaker_ui.host }}.{{ netmaker_base_domain }}               netmaker-ui:80;
     {{ netmaker_api.host }}.{{ netmaker_base_domain }}              netmaker:8081;
 
+    {{ netmaker_broker.tls_host }}.{{ netmaker_base_domain }}       mosquitto:8883;
+
     {{ netmaker_rqlite.http_host }}.{{ ansible_facts.nodename }}    rqlite:4001;
 
     default         444;

common/defaults/main.yml

@@ -0,0 +1 @@
+ipv6_stable_secret: 1111:2222:3333:4444:5555:6666:7777:8888

common/tasks/main.yml

@@ -5,3 +5,5 @@
 - import_tasks: ./packages.yml
 
 - import_tasks: ./aliases.yml
+
+- import_tasks: ./networking.yml

common/tasks/networking.yml

@@ -0,0 +1,22 @@
+- name: Set sysctl settings for ip-forwarding
+  copy:
+      dest: "/etc/sysctl.d/ip-forwarding.conf"
+      content: |
+          net.ipv4.ip_forward           = 1
+          net.ipv6.conf.all.forwarding  = 1
+  notify: reload_sysctl
+
+- name: Set sysctl settings for ipv6-address-generation
+  copy:
+      dest: "/etc/sysctl.d/ipv6-slaac-address-generation.conf"
+      content: |
+          net.ipv6.conf.default.addr_gen_mode = 2
+          net.ipv6.conf.default.stable_secret = {{ ipv6_stable_secret }}
+  notify: reload_sysctl
+
+- name: Set sysctl settings to override ipv6-slaac with enabled forwarding
+  copy:
+      dest: "/etc/sysctl.d/ipv6-slaac-override.conf"
+      content: |
+          net.ipv6.conf.all.accept_ra = 2
+  notify: reload_sysctl

kubernetes/defaults/main.yml

@@ -2,40 +2,16 @@
 kubernetes:
   ipPool:
     ipv4:
-      # Minimum: /24
       cluster_cidr: 10.42.0.0/16
       service_cidr: 10.43.0.0/16
     ipv6:
-      # Minimum: /120
       cluster_cidr: fd42::/56
       service_cidr: fd43::/112
 
-    # Interface to grab node-IPv4/v6 from
+    # Replace - with _
     nodeIp_interface: <interface to grab nodeIp from>
 
   control_plane:
     dns_name: <control-plane dns-reachable-name>
 
   token: <shared token for nodes to join>
-
-  network:
-    # One of [flannel, calico]
-    plugin: calico
-
-    # Helper for networking
-    helper:
-      # https://github.com/Ruakij/RoutingTableToWg
-      #  Translates received-routes from e.g. BGP to wireguard-allowedips
-      #  Helpful, when nodeIp_interface is a wireguard-interface
-      routingtabletowg: false
-
-  # One of [traefik-ingress]
-  ingress_controller: traefik-ingress
-
-  config_extra:
-    # etcd-tuning
-    #  heartbeat: 0.5-1.5x of rtt
-    #  election:  10x- of heartbeat
-    etcd-arg:
-      heartbeat-interval: 500
-      election-timeout: 5000

kubernetes/meta/main.yml

@@ -1,3 +1,4 @@
 ---
   dependencies:
     - role: docker
+    - role: netmaker

kubernetes/tasks/install.yml

@@ -8,7 +8,6 @@
   ansible.builtin.template:
     src: k3s/{{ type }}/config.yaml.jinja2
     dest: /etc/rancher/k3s/config.yaml
-  register: config
 
 - name: Download install-script
   get_url:

kubernetes/tasks/install/agent/install_k3s.yml

@@ -1,12 +1,7 @@
 - name: Install K3s agent
   command: /root/k3s_install.sh {{ type }} 
   register: command
-  changed_when: "'No change detected' not in command.stdout"
+  changed_when: "'No change detected' in command.stdout"
   until: "command is not failed"
   retries: 2
   delay: 10
-
-- name: Make sure service is started / restarted on config change
-  service:
-    name: k3s-agent
-    state: "{{ 'restarted' if not command.changed and config.changed else 'started' }}"

kubernetes/tasks/install/server/install_k3s.yml

@@ -2,17 +2,11 @@
   command: /root/k3s_install.sh {{ type }}
   when: "inventory_hostname == groups['kubernetes'][0]"
   register: command
-  changed_when: "'No change detected' not in command.stdout"
+  changed_when: "'No change detected' in command.stdout"
-
-- name: Make sure service is started / restarted on config change
-  service:
-    name: k3s
-    state: "{{ 'restarted' if not command.changed and config.changed else 'started' }}"
-  when: "inventory_hostname == groups['kubernetes'][0]"
 
 - name: Waiting for K3s-server to accept connections
   ansible.builtin.wait_for:
-    host: "127.0.0.1"
+    host: "{{ inventory_hostname }}"
     port: 6443
     state: started
   when: "inventory_hostname == groups['kubernetes'][0]"
@@ -21,24 +15,17 @@
   command: /root/k3s_install.sh {{ type }}
   when: "inventory_hostname != groups['kubernetes'][0]"
   register: command
-  changed_when: "'No change detected' not in command.stdout"
+  changed_when: "'No change detected' in command.stdout"
   until: "command is not failed"
   retries: 2
   delay: 10
 
-- name: Make sure service is started / restarted on config change
-  service:
-    name: k3s
-    state: "{{ 'restarted' if not command.changed and config.changed else 'started' }}"
-  when: "inventory_hostname != groups['kubernetes'][0]"
-
 - name: Waiting for K3s-server to accept connections on other nodes
   ansible.builtin.wait_for:
-    host: "127.0.0.1"
+    host: "{{ inventory_hostname }}"
     port: 6443
     state: started
   when: "inventory_hostname != groups['kubernetes'][0]"
-
 #- name: Add Kubernetes environment-vars to /etc/profile.d/
 #  blockinfile:
 #    path: /etc/profile.d/k3s-bin.sh
@@ -46,10 +33,3 @@
 #    block: |
 #      export KUBECONFIG="/etc/rancher/k3s/k3s.yaml"
 #    create: true
-
-- name: Deploy calico
-  import_tasks: ./roles/kubernetes/tasks/install/server/network-plugin/deploy_calico.yml
-  when: "kubernetes.network.plugin == 'calico'"
-
-- name: Deploy network-helpers
-  import_tasks: ./roles/kubernetes/tasks/install/server/network-plugin/deploy_network_helper.yml

kubernetes/tasks/install/server/network-plugin/deploy_calico.yml

@@ -1,19 +0,0 @@
-- name: Deploy calico operator
-  command: kubectl create -f https://raw.githubusercontent.com/projectcalico/calico/v3.25.0/manifests/tigera-operator.yaml
-  register: command
-  changed_when: "'created' in command.stdout"
-  run_once: true
-  failed_when:
-  - "command.rc == 1 and 'AlreadyExists' not in command.stderr"
-
-- name: Deploy calico ressource template
-  ansible.builtin.template:
-    src: ./k3s/server/network-plugin/calico/custom-ressource.yml.jinja2
-    dest: /root/calico-ressource.yml
-  run_once: true
-
-- name: Deploy calico ressource
-  command: kubectl apply -f /root/calico-ressource.yml
-  register: command
-  changed_when: "'created' in command.stdout"
-  run_once: true

kubernetes/tasks/install/server/network-plugin/deploy_network_helper.yml

@@ -1,7 +0,0 @@
-- name: Deploy service-file for routing-table to wireguard-translation
-  ansible.builtin.template:
-    src: ./k3s/server/network-plugin/calico/routingtabletowg.yml.jinja2
-    dest: /var/lib/rancher/k3s/server/manifests/routingtabletowg.yml
-    mode: u=rw,g=r,o=r
-  run_once: true
-  when: "kubernetes.network.helper.routingtabletowg"

kubernetes/tasks/prerequisites.yml

@@ -17,26 +17,19 @@
 #- name: Disable swap
 #  command: swapoff -a
 
-- name: Install required packages
+#- name: Install iptables
-  package:
+#  package:
-      name:
+#      name:
-          #- containerd
+#          #- containerd
 #          - iptables
-          # For Longhorn:
+#      state: latest
-          - nfs-common
-          - open-iscsi
-      state: latest
 
 -  import_tasks: ./prerequisites/containerd.yml
 
-- name: Gather interface-name
-  set_fact:
-    interface: "{{ kubernetes.ipPool.nodeIp_interface | replace('-', '_') }}"
-
 - name: Getting nodeIp-data from interface
   set_fact:
-    nodeip_ipv4: "{{ ansible_facts[ interface ].ipv4.address }}"
+    nodeip_ipv4: "{{ ansible_facts[ kubernetes.ipPool.nodeIp_interface ].ipv4.address }}"
-    nodeip_ipv6: "{{ ansible_facts[ interface ].ipv6[0].address if ansible_facts[ interface ].ipv6 is defined }}"
+    nodeip_ipv6: "{{ ansible_facts[ kubernetes.ipPool.nodeIp_interface ].ipv6[0].address }}"
 
 - name: Run handlers to reload configurations
   meta: flush_handlers

kubernetes/templates/k3s/agent/config.yaml.jinja2

@@ -1,18 +1,7 @@
-server: https://{{ hostvars[groups['kubernetes'][0]]['nodeip_ipv4'] }}:6443
+server: https://{{ kubernetes.control_plane.dns_name }}:6443
-token: '{{ kubernetes.token }}'
+token: {{ kubernetes.token }}
 
-{% if nodeip_ipv6 != "" and kubernetes.ipPool.ipv6 is defined %}
 node-ip: {{ nodeip_ipv4 }},{{ nodeip_ipv6 }}
-{% else %}
-node-ip: {{ nodeip_ipv4 }}
-{% endif %}
 
-## Label
+# FIXME: Workaround for bug in Kubernetes 1.24/1.25 ignoring node IPv6 addresses
-# Region & DC
+kubelet-arg: "--node-ip=0.0.0.0"
-node-label:
-{% if region is defined %}
-  - topology.kubernetes.io/region={{ region }}
-{% endif %}
-{% if zone is defined %}
-  - topology.kubernetes.io/zone={{ zone }}
-{% endif %}

kubernetes/templates/k3s/server/config.yaml.jinja2

@@ -1,49 +1,23 @@
 ## Base ##
 {% if inventory_hostname == groups['kubernetes'][0] %}
-# Initialize with internal etcd
 cluster-init: true
 {% else %}
-server: https://{{ hostvars[groups['kubernetes'][0]]['nodeip_ipv4'] }}:6443
+server: https://{{ groups['kubernetes'][0] }}:6443
 {% endif %}
 
-token: '{{ kubernetes.token }}'
+token: {{ kubernetes.token }}
 tls-san:
   - {{ kubernetes.control_plane.dns_name }}
 
 # Networking
-{% if nodeip_ipv6 != "" and kubernetes.ipPool.ipv6 is defined %}
 node-ip: {{ nodeip_ipv4 }},{{ nodeip_ipv6 }}
 cluster-cidr: {{ kubernetes.ipPool.ipv4.cluster_cidr }},{{ kubernetes.ipPool.ipv6.cluster_cidr }}
 service-cidr: {{ kubernetes.ipPool.ipv4.service_cidr }},{{ kubernetes.ipPool.ipv6.service_cidr }}   
-{% else %}
-node-ip: {{ nodeip_ipv4 }}
-cluster-cidr: {{ kubernetes.ipPool.ipv4.cluster_cidr }}
-service-cidr: {{ kubernetes.ipPool.ipv4.service_cidr }}
-{% endif %}
 
 egress-selector-mode: disabled
 
 # Network-plugin
-{% if kubernetes.network.plugin == "flannel" %}
 flannel-backend: vxlan
-{% else %}
-disable-network-policy: true
-flannel-backend: none
-{% endif %}
 
-# Ingress-plugin
+# FIXME: Workaround for bug in Kubernetes 1.24/1.25 ignoring node IPv6 addresses
-{% if kubernetes.ingress_controller != "traefik-ingress" %}
+kubelet-arg: "--node-ip=0.0.0.0"
-disable: traefik
-{% endif %}
-
-## Label
-# Region & DC
-node-label:
-{% if region is defined %}
-  - topology.kubernetes.io/region={{ region }}
-{% endif %}
-{% if zone is defined %}
-  - topology.kubernetes.io/zone={{ zone }}
-{% endif %}
-
-{{ kubernetes.config_extra | to_yaml }}

kubernetes/templates/k3s/server/network-plugin/calico/custom-ressource.yml.jinja2

@@ -1,34 +0,0 @@
-# This section includes base Calico installation configuration.
-# For more information, see: https://projectcalico.docs.tigera.io/master/reference/installation/api#operator.tigera.io/v1.Installation
-apiVersion: operator.tigera.io/v1
-kind: Installation
-metadata:
-  name: default
-spec:
-  # Configures Calico networking.
-  calicoNetwork:
-    # Note: The ipPools section cannot be modified post-install.
-    ipPools:
-    - blockSize: 26
-      cidr: {{ kubernetes.ipPool.ipv4.cluster_cidr }}
-      encapsulation: None
-      natOutgoing: Enabled
-      nodeSelector: all()
-
-{% if nodeip_ipv6 != "" and kubernetes.ipPool.ipv6 is defined %}
-    - blockSize: 122
-      cidr: {{ kubernetes.ipPool.ipv6.cluster_cidr }}
-      encapsulation: None
-      natOutgoing: Enabled
-      nodeSelector: all()
-{% endif %}
-
----
-
-# This section configures the Calico API server.
-# For more information, see: https://projectcalico.docs.tigera.io/master/reference/installation/api#operator.tigera.io/v1.APIServer
-apiVersion: operator.tigera.io/v1
-kind: APIServer 
-metadata: 
-  name: default 
-spec: {}

kubernetes/templates/k3s/server/network-plugin/calico/routingtabletowg.yml.jinja2

@@ -1,45 +0,0 @@
-# https://kubernetes.io/docs/concepts/workloads/controllers/daemonset/
-apiVersion: apps/v1
-kind: DaemonSet
-metadata:
-  name: routingtabletowg
-  namespace: calico-system
-  labels:
-    app: routingtabletowg
-spec:
-  selector:
-    matchLabels:
-      app: routingtabletowg
-  template:
-    metadata:
-      labels:
-        app: routingtabletowg
-    spec:
-      tolerations:
-      # this toleration is to have the daemonset runnable on master nodes
-      # remove it if your masters can't run pods
-      - key: node-role.kubernetes.io/master
-        effect: NoSchedule
-      hostNetwork: true
-      containers:
-        - name: routingtabletowg
-          image: "ruakij/routingtabletowg:0.2.0"
-          env:
-            - name: INTERFACE
-              value: {{ kubernetes.ipPool.nodeIp_interface }}
-            - name: FILTER_PROTOCOL
-              value: bird
-            - name: PERIODIC_SYNC
-              value: '300'
-          securityContext:
-            capabilities:
-              add:
-                - NET_ADMIN
-          resources:
-            requests:
-              cpu: 10m
-              memory: 10Mi
-            limits:
-              cpu: 20m
-              memory: 20Mi
----

netmaker/meta/main.yml

@@ -1,3 +0,0 @@
----
-  dependencies:
-    - role: docker

nomad/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+nomad:
+  version: 1.4.4

nomad/files/systemd-service

@@ -0,0 +1,48 @@
+[Unit]
+Description=Nomad
+Documentation=https://www.nomadproject.io/docs/
+Wants=network-online.target
+After=network-online.target
+
+# When using Nomad with Consul it is not necessary to start Consul first. These
+# lines start Consul before Nomad as an optimization to avoid Nomad logging
+# that Consul is unavailable at startup.
+#Wants=consul.service
+#After=consul.service
+
+[Service]
+
+# Nomad server should be run as the nomad user. Nomad clients
+# should be run as root
+User=root
+Group=root
+
+ExecReload=/bin/kill -HUP $MAINPID
+ExecStart=/usr/local/bin/nomad agent -config /etc/nomad.d
+KillMode=process
+KillSignal=SIGINT
+LimitNOFILE=65536
+LimitNPROC=infinity
+Restart=on-failure
+RestartSec=2
+
+## Configure unit start rate limiting. Units which are started more than
+## *burst* times within an *interval* time span are not permitted to start any
+## more. Use `StartLimitIntervalSec` or `StartLimitInterval` (depending on
+## systemd version) to configure the checking interval and `StartLimitBurst`
+## to configure how many starts per interval are allowed. The values in the
+## commented lines are defaults.
+
+# StartLimitBurst = 5
+
+## StartLimitIntervalSec is used for systemd versions >= 230
+# StartLimitIntervalSec = 10s
+
+## StartLimitInterval is used for systemd versions < 230
+# StartLimitInterval = 10s
+
+TasksMax=infinity
+OOMScoreAdjust=-1000
+
+[Install]
+WantedBy=multi-user.target

nomad/meta/main.yml

@@ -0,0 +1,3 @@
+---
+dependencies:
+  #- role: docker

nomad/tasks/install.yml

@@ -0,0 +1,43 @@
+- name: Download binary
+  ansible.builtin.unarchive:
+    remote_src: true
+    src: https://releases.hashicorp.com/nomad/{{ nomad.version }}/nomad_{{ nomad.version }}_{{ ansible_system | lower }}_{{ 'amd64' if ansible_architecture == 'x86_64' else ansible_architecture }}.zip
+    dest: /usr/local/bin/
+    mode: "755"
+
+- name: Deploy systemd-service file
+  ansible.builtin.copy:
+    src: systemd-service
+    dest: /etc/systemd/system/nomad.service
+    mode: u=rw,g=r,o=r
+
+- name: Create nomad user
+  ansible.builtin.user:
+    name: nomad
+    groups:
+      - docker
+    append: true
+
+- name: Create directory for configs
+  ansible.builtin.file:
+    path: /etc/nomad.d
+    state: directory
+    mode: "0755"
+    owner: "nomad"
+    group: "nomad"
+
+- name: Create nomad.hcl configuration file
+  ansible.builtin.template:
+    src: nomad.hcl.j2
+    dest: /etc/nomad.d/nomad.hcl
+    mode: "0644"
+    owner: "nomad"
+    group: "nomad"
+
+- name: Create directory for data
+  ansible.builtin.file:
+    path: /opt/nomad
+    state: directory
+    mode: "0755"
+    owner: "nomad"
+    group: "nomad"

nomad/tasks/launch.yml

@@ -0,0 +1,8 @@
+- name: Start service
+  ansible.builtin.service:
+    name: nomad
+    state: restarted
+
+- name: Waiting for service to accept connections
+  ansible.builtin.wait_for:
+    port: 4646

nomad/tasks/main.yml

@@ -0,0 +1,3 @@
+- import_tasks: ./install.yml
+
+- import_tasks: ./launch.yml

nomad/templates/nomad.hcl.j2

@@ -0,0 +1,71 @@
+data_dir = "/opt/nomad"
+datacenter = "{{ datacenter }}"
+
+
+bind_addr = "0.0.0.0"
+
+advertise {
+  # Defaults to the first private IP address.
+  #http = "1.2.3.4"
+  #rpc  = "1.2.3.4"
+  #serf = "1.2.3.4:5648" # non-default ports may be specified
+}
+
+{# TODO: Get interface-ip from hosts marked with type=server #}
+{% set server_hosts = ansible_play_batch | difference([inventory_hostname]) %}
+{% if type is defined and type == "server" %}
+server {
+  enabled = true
+  bootstrap_expect = {{ server_hosts | length }}
+
+  server_join {
+    retry_join = [ "{{ server_hosts | join('", "') }}" ]
+    retry_max = 6
+    retry_interval = "15s"
+  }
+
+  default_scheduler_config {
+    scheduler_algorithm             = "binpack"
+    memory_oversubscription_enabled = true
+    reject_job_registration         = false
+    pause_eval_broker               = false # New in Nomad 1.3.2
+
+    preemption_config {
+      batch_scheduler_enabled    = true
+      system_scheduler_enabled   = true
+      service_scheduler_enabled  = true
+      sysbatch_scheduler_enabled = true # New in Nomad 1.2
+    }
+  }
+}
+{% endif %}
+
+client {
+  enabled = true
+
+  {% if type != "server" %}
+  servers = [ "{{ server_hosts | join('", "') }}" ]
+  {% endif %}
+
+  meta {
+    node_type = "{{ type }}"
+    {% if storage is defined and storage %}
+    seaweedfs_volume = "true"
+    {% endif %}
+  }
+}
+
+
+plugin "raw_exec" {
+  config {
+    enabled = true
+  }
+}
+
+plugin "docker" {
+  config {
+    {% if type is defined and type == "server" %}
+    allow_privileged = true
+    {% endif %}
+  }
+}