diff --git a/.chef/config.rb b/.chef/config.rb
index c081eb4..4663d82 100644
--- a/.chef/config.rb
+++ b/.chef/config.rb
@@ -8,27 +8,7 @@ data_bag_path             "data_bags"
 encrypted_data_bag_secret "#{current_dir}/encrypted_data_bag_secret"
 local_mode                true # Chef local mode, replacing Solo
 
-# Knife-Zero config, see https://knife-zero.github.io/40_configuration/
-# Prevent attributes from being saved to the node files
-knife[:automatic_attribute_whitelist] = %w[
-  fqdn
-  os
-  os_version
-  hostname
-  ipaddress
-  roles
-  recipes
-  ipaddress
-  platform
-  platform_version
-  cloud
-  cloud_v2
-  chef_packages
-]
-
 # Added to /etc/chef/client.rb on node bootstrap
 # https://docs.chef.io/attribute_persistence/
-# Source of truth: site-cookbooks/kosmos-base/files/default/chef_normal_attributes.yml
-normal_attrs = YAML.load_file(File.expand_path("../site-cookbooks/kosmos-base/files/default/chef_normal_attributes.yml", __dir__))
-knife[:normal_attribute_allowlist] = normal_attrs
-knife[:allowed_normal_attributes] = normal_attrs
+# Source of truth: site-cookbooks/kosmos-base/files/default/chef_attributes.rb
+client_d_dir(File.expand_path("../site-cookbooks/kosmos-base/files/default/chef_attributes.rb"))
diff --git a/.githooks/pre-commit b/.githooks/pre-commit
deleted file mode 100755
index e97f9cb..0000000
--- a/.githooks/pre-commit
+++ /dev/null
@@ -1,40 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-SCRIPT="$(git rev-parse --show-toplevel)/scripts/util/sanitize_node.sh"
-
-FILES=$(git diff --cached --name-only --diff-filter=ACM -- 'nodes/*.json' || true)
-
-[[ -z "$FILES" ]] && exit 0
-
-DIRTY=0
-
-while IFS= read -r file; do
-  staged_tmp=$(mktemp)
-  sanitized_tmp=$(mktemp)
-
-  # 1. get staged version
-  git show ":$file" > "$staged_tmp"
-
-  # 2. sanitize IN PLACE (on temp copy)
-  cp "$staged_tmp" "$sanitized_tmp"
-  "$SCRIPT" "$sanitized_tmp"
-
-  # 3. if sanitizer changed file, update working tree
-  if ! diff -q "$staged_tmp" "$sanitized_tmp" >/dev/null; then
-    cp "$sanitized_tmp" "$file"
-    echo "Sanitized: $file"
-    DIRTY=1
-  fi
-
-  rm -f "$staged_tmp" "$sanitized_tmp"
-
-done <<< "$FILES"
-
-if [[ "$DIRTY" -ne 0 ]]; then
-  echo ""
-  echo "Commit paused, sanitized files must be re-staged."
-  exit 1
-fi
-
-exit 0
diff --git a/README.md b/README.md
index 1fcb982..e7b2df0 100644
--- a/README.md
+++ b/README.md
@@ -28,10 +28,6 @@ Clone this repository, `cd` into it, and run:
 
     bundle install
 
-### Enable Git hooks
-
-    git config core.hooksPath .githooks
-
 ## Common tasks
 
 ### Bootstrap a new host server
diff --git a/nodes/garage-16.json b/nodes/garage-16.json
index 50a0d2b..2377416 100644
--- a/nodes/garage-16.json
+++ b/nodes/garage-16.json
@@ -22,6 +22,7 @@
       "kosmos-base",
       "kosmos-base::default",
       "kosmos_prometheus::node_exporter",
+      "kosmos_zerotier::ohai_plugin",
       "kosmos_kvm::guest",
       "kosmos_garage",
       "kosmos_garage::default",
@@ -40,6 +41,7 @@
       "postfix::_attributes",
       "postfix::sasl_auth",
       "hostname::default",
+      "zerotier::ohai_plugin",
       "firewall::default"
     ],
     "platform": "ubuntu",
@@ -55,6 +57,22 @@
         "version": "18.2.13",
         "ohai_root": "/opt/chef/embedded/lib/ruby/gems/3.1.0/gems/ohai-18.2.13/lib/ohai"
       }
+    },
+    "zerotier": {
+      "version": "1.16.1",
+      "node_id": "16133890db",
+      "networks": {
+        "8541e5153eb4327c": {
+          "network_name": "virgo",
+          "mac": "7e:24:a7:06:85:3e",
+          "status": "OK",
+          "type": "PRIVATE",
+          "interface": "ztsb7vcj2c",
+          "addresses": [
+            "10.1.1.153/24"
+          ]
+        }
+      }
     }
   },
   "run_list": [
diff --git a/nodes/prometheus-1.json b/nodes/prometheus-1.json
index f834101..aa239ac 100644
--- a/nodes/prometheus-1.json
+++ b/nodes/prometheus-1.json
@@ -22,6 +22,7 @@
       "kosmos-base",
       "kosmos-base::default",
       "kosmos_prometheus::node_exporter",
+      "kosmos_zerotier::ohai_plugin",
       "kosmos_kvm::guest",
       "kosmos_prometheus::server",
       "kosmos_prometheus::alertmanager",
@@ -38,6 +39,7 @@
       "postfix::_attributes",
       "postfix::sasl_auth",
       "hostname::default",
+      "zerotier::ohai_plugin",
       "firewall::default"
     ],
     "platform": "ubuntu",
@@ -53,6 +55,22 @@
         "version": "18.2.13",
         "ohai_root": "/opt/chef/embedded/lib/ruby/gems/3.1.0/gems/ohai-18.2.13/lib/ohai"
       }
+    },
+    "zerotier": {
+      "version": "1.16.2",
+      "node_id": "77fcedcdce",
+      "networks": {
+        "8541e5153eb4327c": {
+          "network_name": "virgo",
+          "mac": "7e:45:48:d3:d8:2b",
+          "status": "OK",
+          "type": "PRIVATE",
+          "interface": "ztsb7vcj2c",
+          "addresses": [
+            "10.1.1.146/24"
+          ]
+        }
+      }
     }
   },
   "run_list": [
diff --git a/roles/base.rb b/roles/base.rb
index dc838b3..915f41d 100644
--- a/roles/base.rb
+++ b/roles/base.rb
@@ -3,4 +3,5 @@ name "base"
 run_list %w(
   kosmos-base::default
   kosmos_prometheus::node_exporter
+  kosmos_zerotier::ohai_plugin
 )
diff --git a/scripts/util/sanitize_node.sh b/scripts/util/sanitize_node.sh
deleted file mode 100755
index 99d4ec3..0000000
--- a/scripts/util/sanitize_node.sh
+++ /dev/null
@@ -1,69 +0,0 @@
-#!/usr/bin/env bash
-# Strip the top-level "override" and "default" attributes from Chef node JSON files.
-#
-# Usage:
-#   ./scripts/util/strip_node_attrs.sh <node> [<node> ...]
-#   ./scripts/util/strip_node_attrs.sh --all
-#
-# A <node> may be a bare node name (e.g. "prometheus-1"), a path relative to the
-# repository root (e.g. "nodes/prometheus-1.json"), or an absolute path.
-#
-# Exit codes:
-#   0 - all target files processed successfully
-#   1 - one or more targets could not be processed (missing args, missing jq,
-#       file not found, invalid JSON, or write failure)
-
-set -uo pipefail
-
-command -v jq >/dev/null 2>&1 || exit 1
-
-root="$(git rev-parse --show-toplevel 2>/dev/null)" || root="$(pwd)"
-
-targets=()
-if [ "$#" -eq 0 ]; then
-  exit 1
-fi
-
-for arg in "$@"; do
-  if [ "$arg" = "--all" ]; then
-    shopt -s nullglob
-    for f in "$root"/nodes/*.json; do
-      targets+=("$f")
-    done
-    shopt -u nullglob
-    continue
-  fi
-
-  if [[ "$arg" == */* ]]; then
-    if [[ "$arg" = /* ]]; then
-      targets+=("$arg")
-    else
-      targets+=("$root/$arg")
-    fi
-  else
-    targets+=("$root/nodes/$arg.json")
-  fi
-done
-
-if [ "${#targets[@]}" -eq 0 ]; then
-  exit 1
-fi
-
-rc=0
-for file in "${targets[@]}"; do
-  [ -f "$file" ] || { rc=1; continue; }
-
-  jq -e . "$file" >/dev/null 2>&1 || { rc=1; continue; }
-
-  tmp="$(mktemp "${file}.XXXXXX")" || { rc=1; continue; }
-  if jq --indent 2 'del(.override, .default)' "$file" > "$tmp" 2>/dev/null; then
-    truncate -s -1 "$tmp" 2>/dev/null || true
-    mv "$tmp" "$file" || { rm -f "$tmp"; rc=1; continue; }
-  else
-    rm -f "$tmp"
-    rc=1
-    continue
-  fi
-done
-
-exit "$rc"
diff --git a/site-cookbooks/kosmos-base/files/default/chef_attributes.rb b/site-cookbooks/kosmos-base/files/default/chef_attributes.rb
new file mode 100644
index 0000000..07e2706
--- /dev/null
+++ b/site-cookbooks/kosmos-base/files/default/chef_attributes.rb
@@ -0,0 +1,8 @@
+allowed_automatic_attributes ["fqdn", "os", "os_version", "hostname",
+  "ipaddress", "roles", "recipes", "ipaddress",
+  "platform", "platform_version", "cloud",
+  "cloud_v2", "chef_packages", "zerotier"]
+allowed_default_attributes []
+allowed_override_attributes []
+allowed_normal_attributes ["knife_zero", "kosmos_kvm", "kosmos-ejabberd",
+  "openresty", "vm_host"]
diff --git a/site-cookbooks/kosmos-base/files/default/chef_normal_attributes.yml b/site-cookbooks/kosmos-base/files/default/chef_normal_attributes.yml
deleted file mode 100644
index 5a6e74e..0000000
--- a/site-cookbooks/kosmos-base/files/default/chef_normal_attributes.yml
+++ /dev/null
@@ -1,6 +0,0 @@
----
-- knife_zero
-- kosmos_kvm
-- kosmos-ejabberd
-- openresty
-- vm_host
diff --git a/site-cookbooks/kosmos-base/recipes/default.rb b/site-cookbooks/kosmos-base/recipes/default.rb
index 5c6fa78..9acdbe8 100644
--- a/site-cookbooks/kosmos-base/recipes/default.rb
+++ b/site-cookbooks/kosmos-base/recipes/default.rb
@@ -2,57 +2,32 @@
 # Cookbook Name:: kosmos-base
 # Recipe:: default
 #
-# The MIT License (MIT)
-#
-# Copyright:: 2019, Kosmos Developers
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
+
+ruby_block "cleanup client.rb" do
+  block do
+    fe = Chef::Util::FileEdit.new("/etc/chef/client.rb")
+    # Delete whitelist attribute definitions, everything is defined in attributes.rb
+    fe.search_file_delete_line(/^.*_attribute_whitelist.*/)
+    fe.search_file_delete_line(/^allowed_.*_attributes.*/)
+    fe.write_file
+  end
+end
+
+cookbook_file "/etc/chef/client.d/attributes.rb" do
+  source "chef_attributes.rb"
+  mode "0644"
+  notifies :create, "ruby_block[reload_client_config]", :immediately
+end
+
+ruby_block "reload_client_config" do
+  block do
+    Chef::Config.from_file("/etc/chef/client.rb")
+  end
+  action :nothing
+end
 
 include_recipe "apt"
 
-cookbook_file "/etc/chef/chef_normal_attributes.yml" do
-  source "chef_normal_attributes.yml"
-  owner "root"
-  group "root"
-  mode "0644"
-end
-
-ruby_block "update allowed_normal_attributes in client.rb" do
-  block do
-    whitelist = YAML.load_file("/etc/chef/chef_normal_attributes.yml")
-    fe = Chef::Util::FileEdit.new("/etc/chef/client.rb")
-    fe.search_file_replace_line(
-      /^allowed_normal_attributes.*/,
-      "allowed_normal_attributes #{whitelist.inspect}"
-    )
-    fe.write_file
-
-    Chef::Config[:allowed_normal_attributes] = whitelist
-    Chef::Config[:normal_attribute_allowlist] = whitelist
-  end
-  not_if do
-    whitelist = YAML.load_file("/etc/chef/chef_normal_attributes.yml")
-    client_rb = ::File.read("/etc/chef/client.rb")
-    whitelist.all? { |attr| client_rb.include?(attr) }
-  end
-end
-
 directory "/etc/apt/keyrings" do
   mode "0755"
   action :create
diff --git a/site-cookbooks/kosmos_zerotier/metadata.rb b/site-cookbooks/kosmos_zerotier/metadata.rb
index a67848b..3a193bd 100644
--- a/site-cookbooks/kosmos_zerotier/metadata.rb
+++ b/site-cookbooks/kosmos_zerotier/metadata.rb
@@ -4,7 +4,8 @@ maintainer_email 'mail@kosmos.org'
 license 'MIT'
 description 'Installs/Configures zerotier'
 long_description 'Installs/Configures zerotier'
-version '0.1.0'
+version '0.2.0'
 chef_version '>= 14.0'
 
 depends 'kosmos-base'
+depends 'zerotier'
diff --git a/site-cookbooks/kosmos_zerotier/recipes/ohai_plugin.rb b/site-cookbooks/kosmos_zerotier/recipes/ohai_plugin.rb
new file mode 100644
index 0000000..36a606a
--- /dev/null
+++ b/site-cookbooks/kosmos_zerotier/recipes/ohai_plugin.rb
@@ -0,0 +1,11 @@
+#
+# Cookbook:: kosmos_zerotier
+# Recipe:: ohai_plugin
+#
+
+include_recipe "zerotier::ohai_plugin"
+
+ohai "reload_zerotier" do
+  action :reload
+  plugin "zerotier"
+end