o Merging in Terraform setup.

29 files changed, 605 insertions, 0 deletions

diff --git a/terraform/ansible/Makefile b/terraform/ansible/Makefile
new file mode 100644
index 0000000..99574dc
--- /dev/null
+++ b/terraform/ansible/Makefile
@@ -0,0 +1,9 @@
+all: pip-install
+
+env:
+	virtualenv -p python3 env
+
+pip-install: env/.pip-install.cookie
+env/.pip-install.cookie: requirements.txt | env
+	env/bin/pip install -r $<
+	@touch "$@"
diff --git a/terraform/ansible/all.yml b/terraform/ansible/all.yml
new file mode 100644
index 0000000..8ba47b7
--- /dev/null
+++ b/terraform/ansible/all.yml
@@ -0,0 +1,35 @@
+- hosts:
+    - all
+  roles:
+    - role: packages
+      tags: packages
+      become: yes
+    - role: lusers
+      tags: lusers
+      become: yes
+    - role: superusers
+      tags: superusers
+      become: yes
+    - role: apt-repos
+      tags: apt-repos
+      become: yes
+
+- hosts:
+    k8s-master
+  tags: k3s, k8s
+  roles:
+    - role: k3s
+      tags: k3s
+      become: yes
+      vars:
+        k3s_role: master
+
+- hosts:
+    k8s-nodes
+  tags: k3s, k8s
+  roles:
+    - role: k3s
+      tags: k3s
+      become: yes
+      vars:
+        k3s_role: node
diff --git a/terraform/ansible/ansible.cfg b/terraform/ansible/ansible.cfg
new file mode 100644
index 0000000..c04b015
--- /dev/null
+++ b/terraform/ansible/ansible.cfg
@@ -0,0 +1,12 @@
+[defaults]
+become_method = sudo
+inventory = ./inventory
+stdout_callback = debug
+#vault_password_file = vault-password
+retry_files_save_path = .retry
+
+#https://stackoverflow.com/questions/32297456/how-to-ignore-ansible-ssh-authenticity-checking
+host_key_checking = False
+
+strategy_plugins = env/lib/python3.7/site-packages/ansible_mitogen/plugins/strategy
+strategy = mitogen_linear
diff --git a/terraform/ansible/dashboard-adminuser.yaml b/terraform/ansible/dashboard-adminuser.yaml
new file mode 100644
index 0000000..30e8122
--- /dev/null
+++ b/terraform/ansible/dashboard-adminuser.yaml
@@ -0,0 +1,21 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: admin-user
+  namespace: kube-system
+
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: admin-user
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: cluster-admin
+subjects:
+- kind: ServiceAccount
+  name: admin-user
+  namespace: kube-system
diff --git a/terraform/ansible/group_vars/all/apt-repos.yml b/terraform/ansible/group_vars/all/apt-repos.yml
new file mode 100644
index 0000000..4f47512
--- /dev/null
+++ b/terraform/ansible/group_vars/all/apt-repos.yml
@@ -0,0 +1,8 @@
+apt_repos:
+  kubernetes:
+    state: present
+    url: http://apt.kubernetes.io/
+    distro: "kubernetes-{{ ansible_distribution_release }}"
+    sections: main
+    key_id: 54A647F9048D5688D7DA2ABE6A030B21BA07F4FB
+    keyserver: hkp://keyserver.ubuntu.com:80
diff --git a/terraform/ansible/group_vars/all/k3s.yml b/terraform/ansible/group_vars/all/k3s.yml
new file mode 100644
index 0000000..2efb8dc
--- /dev/null
+++ b/terraform/ansible/group_vars/all/k3s.yml
@@ -0,0 +1 @@
+k3s_version: 0.7.0
diff --git a/terraform/ansible/group_vars/all/packages.yml b/terraform/ansible/group_vars/all/packages.yml
new file mode 100644
index 0000000..9e97fd6
--- /dev/null
+++ b/terraform/ansible/group_vars/all/packages.yml
@@ -0,0 +1,5 @@
+packages__packages_all:
+  - git
+  - etckeeper
+
+packages_packages: "{{ packages__packages_all }}"
diff --git a/terraform/ansible/group_vars/all/users.yml b/terraform/ansible/group_vars/all/users.yml
new file mode 100644
index 0000000..6cec1e3
--- /dev/null
+++ b/terraform/ansible/group_vars/all/users.yml
@@ -0,0 +1,17 @@
+users:
+  trygvis:
+    authorized_keys: |
+      ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPX+sVfRvl0+KxsDlbIutyB/Es3exTwNfDVHwi9orwz3 trygvis@birgitte
+      ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJAzB6JB/hZ87M6ozsd7lgKxgOacEOZZRxa4ucs11lqq trygvis@conflatorio
+      ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE/Xrsk69KhaXdHPcbBoCbqlQ2DXmx77OnkLAk22ui5m trygvis@malabaricus
+      ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPKXVnzqo+JTVNrt3p0LGeH59DPMc9WkVMXO3wpAyTH6 trygvis@akili
+      ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL3UZyrbXX7WMHqcZCRspkoSIfB6egrbOxXPf1zyZkAw trygvis@arius-v4
+
+    authorized_keys_absent:
+      - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGpWssvnarp8O/oN86VDlLxUHAYHSKbdhXpe1s0hWkX5 trygvis@fuckaduck
+
+lusers:
+  - trygvis
+
+superusers:
+  - trygvis
diff --git a/terraform/ansible/inventory b/terraform/ansible/inventory
new file mode 100755
index 0000000..9c92aff
--- /dev/null
+++ b/terraform/ansible/inventory
@@ -0,0 +1,9 @@
+k8s-master ansible_host=51.158.110.170
+k8s-node0 ansible_host=51.15.201.150
+k8s-node1 ansible_host=163.172.174.68
+k8s-node2 ansible_host=51.158.96.79
+
+[k8s-nodes]
+k8s-node0
+k8s-node1
+k8s-node2
diff --git a/terraform/ansible/k3s-refresh-releases b/terraform/ansible/k3s-refresh-releases
new file mode 100755
index 0000000..ba8f7d6
--- /dev/null
+++ b/terraform/ansible/k3s-refresh-releases
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+set -ueo pipefail
+set -x
+
+#curl https://api.github.com/repos/rancher/k3s/releases > releases.json
+
+#function search {
+#  file=$1; shift
+#  checksum=$1; shift
+#  prog='.[]| {tag_name, assets:(.assets|.[]|{name,url:.browser_download_url} | select(.name==$file or .name==$checksum )) }'
+#  prog="$prog |[.tag_name,.assets.name,.assets.url]"
+#  cat releases.json |jq -r --arg file $file --arg checksum $checksum "$prog|@sh" 
+#}
+#
+#search k3s sha256sum-amd64.txt | while read file file_url checksum checksum_url
+
+function dl() {
+    v=$1; shift
+    echo "  \"$v\":"
+    curl -s -L https://github.com/rancher/k3s/releases/download/v$v/sha256sum-amd64.txt | while read checksum file
+    do
+        url="https://github.com/rancher/k3s/releases/download/v$v/$file"
+        echo "    \"$file\":"
+        echo "      url: \"$url\""
+        echo "      checksum: \"$checksum\""
+    done
+}
+
+releases=ansible/roles/k3s/vars/k3s_releases.yml
+echo "k3s__releases:" > $releases
+dl 0.6.0 >> $releases
+dl 0.7.0 >> $releases
diff --git a/terraform/ansible/kubernetes-dashboard.yaml b/terraform/ansible/kubernetes-dashboard.yaml
new file mode 100644
index 0000000..ee6977b
--- /dev/null
+++ b/terraform/ansible/kubernetes-dashboard.yaml
@@ -0,0 +1,162 @@
+# Copyright 2017 The Kubernetes Authors.
+#
+# 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.
+
+# ------------------- Dashboard Secret ------------------- #
+
+apiVersion: v1
+kind: Secret
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard-certs
+  namespace: kube-system
+type: Opaque
+
+---
+# ------------------- Dashboard Service Account ------------------- #
+
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard
+  namespace: kube-system
+
+---
+# ------------------- Dashboard Role & Role Binding ------------------- #
+
+kind: Role
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: kubernetes-dashboard-minimal
+  namespace: kube-system
+rules:
+  # Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
+- apiGroups: [""]
+  resources: ["secrets"]
+  verbs: ["create"]
+  # Allow Dashboard to create 'kubernetes-dashboard-settings' config map.
+- apiGroups: [""]
+  resources: ["configmaps"]
+  verbs: ["create"]
+  # Allow Dashboard to get, update and delete Dashboard exclusive secrets.
+- apiGroups: [""]
+  resources: ["secrets"]
+  resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"]
+  verbs: ["get", "update", "delete"]
+  # Allow Dashboard to get and update 'kubernetes-dashboard-settings' config map.
+- apiGroups: [""]
+  resources: ["configmaps"]
+  resourceNames: ["kubernetes-dashboard-settings"]
+  verbs: ["get", "update"]
+  # Allow Dashboard to get metrics from heapster.
+- apiGroups: [""]
+  resources: ["services"]
+  resourceNames: ["heapster"]
+  verbs: ["proxy"]
+- apiGroups: [""]
+  resources: ["services/proxy"]
+  resourceNames: ["heapster", "http:heapster:", "https:heapster:"]
+  verbs: ["get"]
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: kubernetes-dashboard-minimal
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: kubernetes-dashboard-minimal
+subjects:
+- kind: ServiceAccount
+  name: kubernetes-dashboard
+  namespace: kube-system
+
+---
+# ------------------- Dashboard Deployment ------------------- #
+
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard
+  namespace: kube-system
+spec:
+  replicas: 1
+  revisionHistoryLimit: 10
+  selector:
+    matchLabels:
+      k8s-app: kubernetes-dashboard
+  template:
+    metadata:
+      labels:
+        k8s-app: kubernetes-dashboard
+    spec:
+      containers:
+      - name: kubernetes-dashboard
+        image: k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.1
+        ports:
+        - containerPort: 8443
+          protocol: TCP
+        args:
+          - --auto-generate-certificates
+          # Uncomment the following line to manually specify Kubernetes API server Host
+          # If not specified, Dashboard will attempt to auto discover the API server and connect
+          # to it. Uncomment only if the default does not work.
+          # - --apiserver-host=http://my-address:port
+        volumeMounts:
+        - name: kubernetes-dashboard-certs
+          mountPath: /certs
+          # Create on-disk volume to store exec logs
+        - mountPath: /tmp
+          name: tmp-volume
+        livenessProbe:
+          httpGet:
+            scheme: HTTPS
+            path: /
+            port: 8443
+          initialDelaySeconds: 30
+          timeoutSeconds: 30
+      volumes:
+      - name: kubernetes-dashboard-certs
+        secret:
+          secretName: kubernetes-dashboard-certs
+      - name: tmp-volume
+        emptyDir: {}
+      serviceAccountName: kubernetes-dashboard
+      # Comment the following tolerations if Dashboard must not be deployed on master
+      tolerations:
+      - key: node-role.kubernetes.io/master
+        effect: NoSchedule
+
+---
+# ------------------- Dashboard Service ------------------- #
+
+kind: Service
+apiVersion: v1
+metadata:
+  labels:
+    k8s-app: kubernetes-dashboard
+  name: kubernetes-dashboard
+  namespace: kube-system
+spec:
+  ports:
+    - port: 443
+      targetPort: 8443
+  selector:
+    k8s-app: kubernetes-dashboard
diff --git a/terraform/ansible/ping.yml b/terraform/ansible/ping.yml
new file mode 100644
index 0000000..c6ade2b
--- /dev/null
+++ b/terraform/ansible/ping.yml
@@ -0,0 +1,4 @@
+- hosts:
+    - all
+  tasks:
+    - debug: msg=Hello
diff --git a/terraform/ansible/requirements.txt b/terraform/ansible/requirements.txt
new file mode 100644
index 0000000..5eed6b2
--- /dev/null
+++ b/terraform/ansible/requirements.txt
@@ -0,0 +1 @@
+mitogen==0.2.3
diff --git a/terraform/ansible/roles/apt-repos/defaults/main.yml b/terraform/ansible/roles/apt-repos/defaults/main.yml
new file mode 100644
index 0000000..80975f0
--- /dev/null
+++ b/terraform/ansible/roles/apt-repos/defaults/main.yml
@@ -0,0 +1 @@
+apt_repos:
diff --git a/terraform/ansible/roles/apt-repos/handlers/main.yml b/terraform/ansible/roles/apt-repos/handlers/main.yml
new file mode 100644
index 0000000..2401293
--- /dev/null
+++ b/terraform/ansible/roles/apt-repos/handlers/main.yml
@@ -0,0 +1,3 @@
+- name: apt update
+  apt:
+    update_cache: true
diff --git a/terraform/ansible/roles/apt-repos/tasks/main.yml b/terraform/ansible/roles/apt-repos/tasks/main.yml
new file mode 100644
index 0000000..de51cb3
--- /dev/null
+++ b/terraform/ansible/roles/apt-repos/tasks/main.yml
@@ -0,0 +1,10 @@
+- apt:
+    name:
+      - apt-transport-https
+    install_recommends: no
+
+- with_dict: "{{ apt_repos|default('[]') }}"
+  include_tasks: repo.yml
+  vars:
+    state: "{{ item.value.state | default('present') }}"
+
diff --git a/terraform/ansible/roles/apt-repos/tasks/repo.yml b/terraform/ansible/roles/apt-repos/tasks/repo.yml
new file mode 100644
index 0000000..135aeac
--- /dev/null
+++ b/terraform/ansible/roles/apt-repos/tasks/repo.yml
@@ -0,0 +1,28 @@
+- name: "apt-key add {{ item.key }} (key url)"
+  apt_key:
+    id: "{{ item.value.key_id }}"
+    url: "{{ item.value.key_url }}"
+    state: "{{ state }}"
+  when: item.value.key_url is defined and item.value.key_id is defined
+
+- name: "apt-key add {{ item.key }} (keyserver)"
+  apt_key:
+    id: "{{ item.value.key_id }}"
+    keyserver: "{{ item.value.keyserver }}"
+    state: "{{ state }}"
+  when: item.value.keyserver is defined and item.value.key_id is defined
+
+- name: "add repo {{ item.key }}"
+  when: item.value.url is defined and state == "present"
+  copy:
+    dest: "/etc/apt/sources.list.d/{{ item.key }}.list"
+    content: |
+      deb {{ item.value.url }} {{ item.value.distro }} {{ item.value.sections }}
+  notify: apt update
+
+- name: "remove repo {{ item.key }}"
+  when: state == "absent"
+  file:
+    path: "/etc/apt/sources.list.d/{{ item.key }}.list"
+    state: absent
+  notify: apt update
diff --git a/terraform/ansible/roles/k3s/defaults/main.yml b/terraform/ansible/roles/k3s/defaults/main.yml
new file mode 100644
index 0000000..9731038
--- /dev/null
+++ b/terraform/ansible/roles/k3s/defaults/main.yml
@@ -0,0 +1 @@
+k3s__version: 0.7.0
diff --git a/terraform/ansible/roles/k3s/handlers/main.yml b/terraform/ansible/roles/k3s/handlers/main.yml
new file mode 100644
index 0000000..206b14e
--- /dev/null
+++ b/terraform/ansible/roles/k3s/handlers/main.yml
@@ -0,0 +1,4 @@
+- name: systemctl restart k3s
+  systemd:
+    unit: k3s
+    state: restarted
diff --git a/terraform/ansible/roles/k3s/tasks/main.yml b/terraform/ansible/roles/k3s/tasks/main.yml
new file mode 100644
index 0000000..0b7797a
--- /dev/null
+++ b/terraform/ansible/roles/k3s/tasks/main.yml
@@ -0,0 +1,39 @@
+- include_vars:
+    file: k3s_releases.yml
+
+- get_url:
+    url: "{{ k3s__releases[k3s_version][item].url }}"
+    dest: /usr/local/bin/k3s
+    checksum: "sha256:{{ k3s__releases[k3s_version][item].checksum }}"
+    mode: ugo=rx
+
+  with_items:
+    - k3s
+  notify: systemctl restart k3s
+
+- template:
+    src: "k3s.service.j2"
+    dest: "/etc/systemd/system/k3s.service"
+  notify: systemctl restart k3s
+
+- systemd:
+    unit: k3s
+    daemon_reload: yes
+    enabled: yes
+
+- meta: flush_handlers
+
+- when: k3s_role == 'master'
+  block:
+    - name: Wait for node-token
+      wait_for:
+        path: /var/lib/rancher/k3s/server/node-token
+
+    - name: Read node-token from master
+      slurp:
+        src: /var/lib/rancher/k3s/server/node-token
+      register: node_token
+
+    - name: Store Master node-token
+      set_fact: 
+        node_token: "{{ node_token.content | b64decode | regex_replace('\n', '') }}"
diff --git a/terraform/ansible/roles/k3s/templates/k3s.service.j2 b/terraform/ansible/roles/k3s/templates/k3s.service.j2
new file mode 100644
index 0000000..b1c5c54
--- /dev/null
+++ b/terraform/ansible/roles/k3s/templates/k3s.service.j2
@@ -0,0 +1,21 @@
+[Unit]
+After=network.target
+
+[Service]
+{% if k3s_role == 'master' %}
+ExecStartPre=-/sbin/modprobe br_netfilter
+ExecStartPre=-/sbin/modprobe overlay
+ExecStart=/usr/local/bin/k3s server
+{% else %}
+# TODO: this should use private_ip
+ExecStart=/usr/local/bin/k3s agent --server https://{{ hostvars['k8s-master']['ansible_host'] }}:6443 --token {{ hostvars['k8s-master']['node_token'] }}
+{% endif %}
+KillMode=process
+Delegate=yes
+LimitNOFILE=infinity
+LimitNPROC=infinity
+LimitCORE=infinity
+TasksMax=infinity
+
+[Install]
+WantedBy=multi-user.target
diff --git a/terraform/ansible/roles/k3s/vars/k3s_releases.yml b/terraform/ansible/roles/k3s/vars/k3s_releases.yml
new file mode 100644
index 0000000..52f599d
--- /dev/null
+++ b/terraform/ansible/roles/k3s/vars/k3s_releases.yml
@@ -0,0 +1,21 @@
+k3s__releases:
+  "0.6.0":
+    "hyperkube":
+      url: "https://github.com/rancher/k3s/releases/download/v0.6.0/hyperkube"
+      checksum: "7bb86be92335ebe5fc653d90b28575b7cb0f036b26a1c468ea7bc9d5eb2c302c"
+    "k3s":
+      url: "https://github.com/rancher/k3s/releases/download/v0.6.0/k3s"
+      checksum: "d1ffefe9fa8de45236c9394b5622c8e67319acda5b70ee8a83496325eeb27359"
+    "k3s-airgap-images-amd64.tar":
+      url: "https://github.com/rancher/k3s/releases/download/v0.6.0/k3s-airgap-images-amd64.tar"
+      checksum: "0ea5c7763d6f58294778ffa2fe4167f76f9cf2be0b6e3d15f9fda177838baa0b"
+  "0.7.0":
+    "hyperkube":
+      url: "https://github.com/rancher/k3s/releases/download/v0.7.0/hyperkube"
+      checksum: "96a07f3dfc1e53d8e12964936687ab70831ac5a15de49ed1c4126758acbe1e4b"
+    "k3s":
+      url: "https://github.com/rancher/k3s/releases/download/v0.7.0/k3s"
+      checksum: "b838785f81f4a8c7e4564769c4deae391439d6782170f6a03bee742dd39c4d3c"
+    "k3s-airgap-images-amd64.tar":
+      url: "https://github.com/rancher/k3s/releases/download/v0.7.0/k3s-airgap-images-amd64.tar"
+      checksum: "219f3bc8c9747a317362c948efb10b750233fcd751cb793fcb78d5b7b1449008"
diff --git a/terraform/ansible/roles/lusers/defaults/main.yml b/terraform/ansible/roles/lusers/defaults/main.yml
new file mode 100644
index 0000000..61602c5
--- /dev/null
+++ b/terraform/ansible/roles/lusers/defaults/main.yml
@@ -0,0 +1 @@
+lusers_authorized_keys_exclusive: no
diff --git a/terraform/ansible/roles/lusers/tasks/main.yml b/terraform/ansible/roles/lusers/tasks/main.yml
new file mode 100644
index 0000000..cb10845
--- /dev/null
+++ b/terraform/ansible/roles/lusers/tasks/main.yml
@@ -0,0 +1,45 @@
+---
+- become: yes
+  tags: lusers
+  vars:
+    usernames: "{{ users|dict2items|map(attribute='key')|list }}"
+  block:
+    - name: adduser
+      with_items: "{{ lusers }}"
+      user:
+        name: "{{ item }}"
+        shell: /bin/bash
+
+    - name: getent passwd
+      getent:
+        database: passwd
+
+    - name: disable user
+      with_items: "{{ usernames }}"
+      when: (item not in lusers) and (item in getent_passwd)
+      user:
+        name: "{{ item }}"
+        shell: /usr/sbin/nologin
+
+    - name: mkdir ~/.ssh
+      when: lusers_authorized_keys_exclusive
+      with_items: "{{ lusers }}"
+      file:
+        path: "~{{ item }}/.ssh"
+        state: directory
+        owner: "{{ item }}"
+        mode: 0700
+
+    - name: authorized_keys, exclusively managed by Ansible
+      copy:
+        dest: "/home/{{ item }}/.ssh/authorized_keys"
+        content: "{{ users[item].authorized_keys }}"
+      when: lusers_authorized_keys_exclusive
+      with_items: "{{ lusers }}"
+
+    - name: authorized_keys, shared management with Ansible
+      authorized_key:
+        user: "{{ item }}"
+        key: "{{ users[item].authorized_keys }}"
+      with_items: "{{ lusers }}"
+      when: not lusers_authorized_keys_exclusive
diff --git a/terraform/ansible/roles/packages/defaults/main.yml b/terraform/ansible/roles/packages/defaults/main.yml
new file mode 100644
index 0000000..5c17ccd
--- /dev/null
+++ b/terraform/ansible/roles/packages/defaults/main.yml
@@ -0,0 +1,3 @@
+packages__enable_backports: no
+packages_packages:
+packages__version: "{{ ansible_distribution_release }}"
diff --git a/terraform/ansible/roles/packages/handlers/main.yml b/terraform/ansible/roles/packages/handlers/main.yml
new file mode 100644
index 0000000..0298ff9
--- /dev/null
+++ b/terraform/ansible/roles/packages/handlers/main.yml
@@ -0,0 +1,5 @@
+---
+- name: update apt cache
+  become: yes
+  apt:
+    update_cache: yes
diff --git a/terraform/ansible/roles/packages/tasks/main.yml b/terraform/ansible/roles/packages/tasks/main.yml
new file mode 100644
index 0000000..a6b990a
--- /dev/null
+++ b/terraform/ansible/roles/packages/tasks/main.yml
@@ -0,0 +1,54 @@
+---
+- name: configure debian repositories
+  notify: update apt cache
+  copy:
+    dest: /etc/apt/sources.list
+    content: "{{ versions[packages__version] }}"
+  vars:
+    versions:
+      stretch: |
+        deb     http://ftp.no.debian.org/debian/ stretch main contrib non-free
+        deb-src http://ftp.no.debian.org/debian/ stretch main contrib non-free
+
+        deb     http://security.debian.org/debian-security stretch/updates main contrib non-free
+        deb-src http://security.debian.org/debian-security stretch/updates main contrib non-free
+
+        deb     http://ftp.no.debian.org/debian/ stretch-updates main contrib non-free
+        deb-src http://ftp.no.debian.org/debian/ stretch-updates main contrib non-free
+
+        {{ '' if packages__enable_backports else '#' }}deb     http://ftp.no.debian.org/debian/ stretch-backports main contrib non-free
+        {{ '' if packages__enable_backports else '#' }}deb-src http://ftp.no.debian.org/debian/ stretch-backports main contrib non-free
+      jessie: |
+        deb     http://ftp.no.debian.org/debian/ jessie main contrib non-free
+        deb-src http://ftp.no.debian.org/debian/ jessie main contrib non-free
+
+        deb     http://security.debian.org/debian-security jessie/updates main contrib non-free
+        deb-src http://security.debian.org/debian-security jessie/updates main contrib non-free
+
+        deb     http://ftp.no.debian.org/debian/ jessie-updates main contrib non-free
+        deb-src http://ftp.no.debian.org/debian/ jessie-updates main contrib non-free
+
+        {{ '' if packages__enable_backports else '#' }}deb     http://ftp.no.debian.org/debian/ jessie-backports main contrib non-free
+        {{ '' if packages__enable_backports else '#' }}deb-src http://ftp.no.debian.org/debian/ jessie-backports main contrib non-free
+      unstable: |
+        deb     http://ftp.no.debian.org/debian/ unstable main contrib non-free
+        deb-src http://ftp.no.debian.org/debian/ unstable main contrib non-free
+      sid: |
+        deb     http://ftp.no.debian.org/debian/ sid main contrib non-free
+        deb-src http://ftp.no.debian.org/debian/ sid main contrib non-free
+
+- name: Enable backports repository by default
+  when: packages__enable_backports
+  copy:
+    dest: /etc/apt/preferences.d/bitraf-packages
+    content: |
+      Package: *
+      Pin: release a=stretch-backports
+      Pin-Priority: 500
+
+- meta: flush_handlers
+
+- name: install debian packages
+  apt:
+    name: "{{ packages_packages }}"
+    install_recommends: no
diff --git a/terraform/ansible/roles/superusers/tasks/adjust-group.yml b/terraform/ansible/roles/superusers/tasks/adjust-group.yml
new file mode 100644
index 0000000..32666ad
--- /dev/null
+++ b/terraform/ansible/roles/superusers/tasks/adjust-group.yml
@@ -0,0 +1,21 @@
+- vars:
+    members: "{{ getent_group[group][2].split(',') if group in getent_group else [] }}"
+    to_add: "{{ usernames | intersect(superusers) | difference(members) }}"
+    to_remove: "{{ members | difference(superusers) }}"
+  tags: superusers
+  block:
+    - debug: var=group
+    - debug: var=to_add
+    - debug: var=to_remove
+
+    - name: gpasswd --add
+      with_items: "{{ to_add }}"
+      when: (item|length) > 0
+      become: yes
+      shell: "gpasswd --add {{ item }} {{ group }}"
+
+    - name: gpasswd --delete
+      with_items: "{{ to_remove }}"
+      when: (item|length) > 0
+      become: yes
+      shell: "gpasswd --delete {{ item }} {{ group }}"
diff --git a/terraform/ansible/roles/superusers/tasks/main.yml b/terraform/ansible/roles/superusers/tasks/main.yml
new file mode 100644
index 0000000..70623a0
--- /dev/null
+++ b/terraform/ansible/roles/superusers/tasks/main.yml
@@ -0,0 +1,31 @@
+---
+- tags: superusers
+  block:
+    - name: getent passwd
+      getent:
+        database: passwd
+
+    - name: getent group
+      getent:
+        database: group
+
+# NOTE: Accounts are added by the luser module.
+- tags: superusers
+  vars:
+    usernames: "{{ users|dict2items|map(attribute='key')|list }}"
+    unix_groups:
+      - sudo
+      - systemd-journal
+  with_items: "{{ unix_groups }}"
+  loop_control:
+    loop_var: group
+  include_tasks: adjust-group.yml
+
+- name: "Allow 'sudo' group to have passwordless sudo"
+  tags: superusers
+  become: yes
+  lineinfile:
+    dest: /etc/sudoers
+    state: present
+    regexp: '^%sudo'
+    line: '%sudo ALL=(ALL) NOPASSWD: ALL'