diff --git a/README.md b/README.md
index ff3f1e7..cdb24fd 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 This playbook will build an HA Kubernetes cluster with `k3s`, `kube-vip` and MetalLB via `ansible`.
 
-This is based on the work from [this fork](https://github.com/212850a/k3s-ansible) which is based on the work from [k3s-io/k3s-ansible](https://github.com/k3s-io/k3s-ansible). It uses [kube-vip](https://kube-vip.chipzoller.dev/) to create a load balancer for control plane, and [metal-lb](https://metallb.universe.tf/installation/) for its service `LoadBalancer`.
+This is based on the work from [this fork](https://github.com/212850a/k3s-ansible) which is based on the work from [k3s-io/k3s-ansible](https://github.com/k3s-io/k3s-ansible). It uses [kube-vip](https://kube-vip.io/) to create a load balancer for control plane, and [metal-lb](https://metallb.universe.tf/installation/) for its service `LoadBalancer`.
 
 If you want more context on how this works, see:
 
diff --git a/inventory/sample/group_vars/all.yml b/inventory/sample/group_vars/all.yml
index eac25c6..6230fb1 100644
--- a/inventory/sample/group_vars/all.yml
+++ b/inventory/sample/group_vars/all.yml
@@ -81,3 +81,49 @@ proxmox_lxc_ct_ids:
   - 202
   - 203
   - 204
+
+# Only enable this if you have set up your own container registry to act as a mirror / pull-through cache
+# (harbor / nexus / docker's official registry / etc).
+# Can be beneficial for larger dev/test environments (for example if you're getting rate limited by docker hub),
+# or air-gapped environments where your nodes don't have internet access after the initial setup
+# (which is still needed for downloading the k3s binary and such).
+# k3s's documentation about private registries here: https://docs.k3s.io/installation/private-registry
+custom_registries: false
+# The registries can be authenticated or anonymous, depending on your registry server configuration.
+# If they allow anonymous access, simply remove the following bit from custom_registries_yaml
+#   configs:
+#     "registry.domain.com":
+#       auth:
+#         username: yourusername
+#         password: yourpassword
+# The following is an example that pulls all images used in this playbook through your private registries.
+# It also allows you to pull your own images from your private registry, without having to use imagePullSecrets
+# in your deployments.
+# If all you need is your own images and you don't care about caching the docker/quay/ghcr.io images,
+# you can just remove those from the mirrors: section.
+custom_registries_yaml: |
+  mirrors:
+    docker.io:
+      endpoint:
+        - "https://registry.domain.com/v2/dockerhub"
+    quay.io:
+      endpoint:
+        - "https://registry.domain.com/v2/quayio"
+    ghcr.io:
+      endpoint:
+        - "https://registry.domain.com/v2/ghcrio"
+    registry.domain.com:
+      endpoint:
+        - "https://registry.domain.com"
+
+  configs:
+    "registry.domain.com":
+      auth:
+        username: yourusername
+        password: yourpassword
+
+# Only enable and configure these if you access the internet through a proxy
+# proxy_env:
+#   HTTP_PROXY: "http://proxy.domain.local:3128"
+#   HTTPS_PROXY: "http://proxy.domain.local:3128"
+#   NO_PROXY: "*.domain.local,127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
diff --git a/requirements.txt b/requirements.txt
index 0604a64..30cb1d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@
 #
 ansible-compat==3.0.1
     # via molecule
-ansible-core==2.15.2
+ansible-core==2.15.4
     # via
     #   -r requirements.in
     #   ansible-compat
@@ -86,7 +86,7 @@ molecule==4.0.4
     #   molecule-vagrant
 molecule-vagrant==1.0.0
     # via -r requirements.in
-netaddr==0.8.0
+netaddr==0.9.0
     # via -r requirements.in
 nodeenv==1.7.0
     # via pre-commit
@@ -103,7 +103,7 @@ pluggy==1.0.0
     # via molecule
 pre-commit==2.21.0
     # via -r requirements.in
-pre-commit-hooks==4.4.0
+pre-commit-hooks==4.5.0
     # via -r requirements.in
 pyasn1==0.4.8
     # via
diff --git a/roles/k3s_agent/tasks/http_proxy.yml b/roles/k3s_agent/tasks/http_proxy.yml
new file mode 100644
index 0000000..f0a68f6
--- /dev/null
+++ b/roles/k3s_agent/tasks/http_proxy.yml
@@ -0,0 +1,18 @@
+---
+
+- name: Create k3s.service.d directory
+  file:
+    path: '{{ systemd_dir }}/k3s.service.d'
+    state: directory
+    owner: root
+    group: root
+    mode: '0755'
+
+
+- name: Copy K3s http_proxy conf file
+  template:
+    src: "http_proxy.conf.j2"
+    dest: "{{ systemd_dir }}/k3s.service.d/http_proxy.conf"
+    owner: root
+    group: root
+    mode: '0755'
diff --git a/roles/k3s_agent/tasks/main.yml b/roles/k3s_agent/tasks/main.yml
index 0ce8e08..395c1ac 100644
--- a/roles/k3s_agent/tasks/main.yml
+++ b/roles/k3s_agent/tasks/main.yml
@@ -1,5 +1,9 @@
 ---
 
+- name: Deploy K3s http_proxy conf
+  include_tasks: http_proxy.yml
+  when: proxy_env is defined
+
 - name: Copy K3s service file
   template:
     src: "k3s.service.j2"
diff --git a/roles/k3s_agent/templates/http_proxy.conf.j2 b/roles/k3s_agent/templates/http_proxy.conf.j2
new file mode 100644
index 0000000..6591d45
--- /dev/null
+++ b/roles/k3s_agent/templates/http_proxy.conf.j2
@@ -0,0 +1,4 @@
+[Service]
+Environment=HTTP_PROXY={{ proxy_env.HTTP_PROXY }}
+Environment=HTTPS_PROXY={{ proxy_env.HTTPS_PROXY }}
+Environment=NO_PROXY={{ proxy_env.NO_PROXY }}
diff --git a/roles/k3s_custom_registries/defaults/main.yml b/roles/k3s_custom_registries/defaults/main.yml
new file mode 100644
index 0000000..704aec7
--- /dev/null
+++ b/roles/k3s_custom_registries/defaults/main.yml
@@ -0,0 +1,6 @@
+---
+# Indicates whether custom registries for k3s should be configured
+# Possible values:
+#   - present
+#   - absent
+state: present
diff --git a/roles/k3s_custom_registries/tasks/main.yml b/roles/k3s_custom_registries/tasks/main.yml
new file mode 100644
index 0000000..dfe48c2
--- /dev/null
+++ b/roles/k3s_custom_registries/tasks/main.yml
@@ -0,0 +1,17 @@
+---
+
+- name: Create directory /etc/rancher/k3s
+  file:
+    path: "/etc/{{ item }}"
+    state: directory
+    mode: '0755'
+  loop:
+    - rancher
+    - rancher/k3s
+
+- name: Insert registries into /etc/rancher/k3s/registries.yaml
+  blockinfile:
+    path: /etc/rancher/k3s/registries.yaml
+    block: "{{ custom_registries_yaml }}"
+    mode: '0600'
+    create: true
diff --git a/roles/k3s_server/tasks/http_proxy.yml b/roles/k3s_server/tasks/http_proxy.yml
new file mode 100644
index 0000000..f0a68f6
--- /dev/null
+++ b/roles/k3s_server/tasks/http_proxy.yml
@@ -0,0 +1,18 @@
+---
+
+- name: Create k3s.service.d directory
+  file:
+    path: '{{ systemd_dir }}/k3s.service.d'
+    state: directory
+    owner: root
+    group: root
+    mode: '0755'
+
+
+- name: Copy K3s http_proxy conf file
+  template:
+    src: "http_proxy.conf.j2"
+    dest: "{{ systemd_dir }}/k3s.service.d/http_proxy.conf"
+    owner: root
+    group: root
+    mode: '0755'
diff --git a/roles/k3s_server/tasks/main.yml b/roles/k3s_server/tasks/main.yml
index 0a8c4b5..030dc22 100644
--- a/roles/k3s_server/tasks/main.yml
+++ b/roles/k3s_server/tasks/main.yml
@@ -12,11 +12,16 @@
   failed_when: false
   changed_when: false
 
+- name: Deploy K3s http_proxy conf
+  include_tasks: http_proxy.yml
+  when: proxy_env is defined
+
 - name: Deploy vip manifest
   include_tasks: vip.yml
 
 - name: Deploy metallb manifest
   include_tasks: metallb.yml
+  tags: metallb
 
 - name: Init cluster inside the transient k3s-init service
   command:
diff --git a/roles/k3s_server/templates/http_proxy.conf.j2 b/roles/k3s_server/templates/http_proxy.conf.j2
new file mode 100644
index 0000000..6591d45
--- /dev/null
+++ b/roles/k3s_server/templates/http_proxy.conf.j2
@@ -0,0 +1,4 @@
+[Service]
+Environment=HTTP_PROXY={{ proxy_env.HTTP_PROXY }}
+Environment=HTTPS_PROXY={{ proxy_env.HTTPS_PROXY }}
+Environment=NO_PROXY={{ proxy_env.NO_PROXY }}
diff --git a/roles/k3s_server_post/tasks/main.yml b/roles/k3s_server_post/tasks/main.yml
index 84a79db..f88dc08 100644
--- a/roles/k3s_server_post/tasks/main.yml
+++ b/roles/k3s_server_post/tasks/main.yml
@@ -1,6 +1,7 @@
 ---
 - name: Deploy metallb pool
   include_tasks: metallb.yml
+  tags: metallb
 
 - name: Remove tmp directory used for manifests
   file:
diff --git a/roles/lxc/handlers/main.yml b/roles/lxc/handlers/main.yml
index 7d73985..6450e4c 100644
--- a/roles/lxc/handlers/main.yml
+++ b/roles/lxc/handlers/main.yml
@@ -2,3 +2,4 @@
 - name: Reboot server
   become: true
   reboot:
+  listen: reboot server
diff --git a/roles/prereq/defaults/main.yml b/roles/prereq/defaults/main.yml
new file mode 100644
index 0000000..e469b0b
--- /dev/null
+++ b/roles/prereq/defaults/main.yml
@@ -0,0 +1,4 @@
+---
+secure_path:
+  RedHat: '/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin'
+  Suse: '/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/bin'
diff --git a/roles/prereq/tasks/main.yml b/roles/prereq/tasks/main.yml
index b85ae0d..2fffe06 100644
--- a/roles/prereq/tasks/main.yml
+++ b/roles/prereq/tasks/main.yml
@@ -15,6 +15,7 @@
     value: "1"
     state: present
     reload: yes
+  tags: sysctl
 
 - name: Enable IPv6 forwarding
   ansible.posix.sysctl:
@@ -22,6 +23,7 @@
     value: "1"
     state: present
     reload: yes
+  tags: sysctl
 
 - name: Enable IPv6 router advertisements
   ansible.posix.sysctl:
@@ -29,6 +31,7 @@
     value: "2"
     state: present
     reload: yes
+  tags: sysctl
 
 - name: Add br_netfilter to /etc/modules-load.d/
   copy:
@@ -53,13 +56,14 @@
   loop:
     - net.bridge.bridge-nf-call-iptables
     - net.bridge.bridge-nf-call-ip6tables
+  tags: sysctl
 
 - name: Add /usr/local/bin to sudo secure_path
   lineinfile:
-    line: 'Defaults    secure_path = /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin'
+    line: 'Defaults    secure_path = {{ secure_path[ansible_os_family] }}'
     regexp: "Defaults(\\s)*secure_path(\\s)*="
     state: present
     insertafter: EOF
     path: /etc/sudoers
     validate: 'visudo -cf %s'
-  when: ansible_os_family == "RedHat"
+  when: ansible_os_family in [ "RedHat", "Suse" ]
diff --git a/roles/proxmox_lxc/handlers/main.yml b/roles/proxmox_lxc/handlers/main.yml
index 565c882..0d5d983 100644
--- a/roles/proxmox_lxc/handlers/main.yml
+++ b/roles/proxmox_lxc/handlers/main.yml
@@ -5,7 +5,9 @@
       set_fact:
         proxmox_lxc_filtered_ids: >-
           {{ proxmox_lxc_filtered_files | map("split", "/") | map("last") | map("split", ".") | map("first") }}
+      listen: reboot containers
     - name: Reboot container
       command: "pct reboot {{ item }}"
       loop: "{{ proxmox_lxc_filtered_ids }}"
       changed_when: true
+      listen: reboot containers
diff --git a/roles/raspberrypi/handlers/main.yml b/roles/raspberrypi/handlers/main.yml
index ac385a7..93e7459 100644
--- a/roles/raspberrypi/handlers/main.yml
+++ b/roles/raspberrypi/handlers/main.yml
@@ -1,3 +1,4 @@
 ---
 - name: Reboot
   reboot:
+  listen: reboot
diff --git a/roles/reset/tasks/main.yml b/roles/reset/tasks/main.yml
index cd3bf72..d75c9ff 100644
--- a/roles/reset/tasks/main.yml
+++ b/roles/reset/tasks/main.yml
@@ -46,6 +46,15 @@
     - /var/lib/rancher/
     - /var/lib/cni/
 
+- name: Remove K3s http_proxy files
+  file:
+    name: "{{ item }}"
+    state: absent
+  with_items:
+    - "{{ systemd_dir }}/k3s.service.d"
+    - "{{ systemd_dir }}/k3s-node.service.d"
+  when: proxy_env is defined
+
 - name: Reload daemon_reload
   systemd:
     daemon_reload: yes
diff --git a/site.yml b/site.yml
index 8f24982..6dde6b1 100644
--- a/site.yml
+++ b/site.yml
@@ -3,6 +3,7 @@
   hosts: proxmox
   gather_facts: true
   become: yes
+  environment: "{{ proxy_env | default({}) }}"
   roles:
     - role: proxmox_lxc
       when: proxmox_lxc_configure
@@ -10,6 +11,7 @@
 - name: Prepare k3s nodes
   hosts: k3s_cluster
   gather_facts: yes
+  environment: "{{ proxy_env | default({}) }}"
   roles:
     - role: lxc
       become: true
@@ -20,21 +22,27 @@
       become: true
     - role: raspberrypi
       become: true
+    - role: k3s_custom_registries
+      become: true
+      when: custom_registries
 
 - name: Setup k3s servers
   hosts: master
+  environment: "{{ proxy_env | default({}) }}"
   roles:
     - role: k3s_server
       become: true
 
 - name: Setup k3s agents
   hosts: node
+  environment: "{{ proxy_env | default({}) }}"
   roles:
     - role: k3s_agent
       become: true
 
 - name: Configure k3s cluster
   hosts: master
+  environment: "{{ proxy_env | default({}) }}"
   roles:
     - role: k3s_server_post
       become: true