diff --git a/global/overlay/etc/puppet/setup_cosmos_modules b/global/overlay/etc/puppet/setup_cosmos_modules
new file mode 100755
index 0000000..df5e778
--- /dev/null
+++ b/global/overlay/etc/puppet/setup_cosmos_modules
@@ -0,0 +1,155 @@
+#!/usr/bin/env python3
+
+import csv
+import re
+import socket
+
+
+def parse_bash_vars(path):
+    """
+    Parses a bash script and returns a dictionary representing the
+    variables declared in that script.
+
+    Source: https://dev.to/htv2012/how-to-parse-bash-variables-b4f
+
+    :param path: The path to the bash script
+    :return: Variables as a dictionary
+    """
+    with open(path) as stream:
+        contents = stream.read().strip()
+    var_declarations = re.findall(
+        r"^[a-zA-Z0-9_]+=.*$", contents, flags=re.MULTILINE
+    )
+    reader = csv.reader(var_declarations, delimiter="=")
+    bash_vars = dict(reader)
+    return bash_vars
+
+
+try:
+    os_info = parse_bash_vars("/etc/os-release")
+
+except IOError:
+    os_info = None
+
+try:
+    fqdn = socket.getfqdn()
+    hostname = fqdn.split('.')[0]
+except OSError:
+    host_info = None
+else:
+
+    domainname = '.'.join([x for x in fqdn.split('.')[:1]])
+    hostname = fqdn.split('.')[0]
+    instance, location, environment, function, number = hostname.split('-')
+    service = fqdn.split('.')[1]
+
+    host_info = {
+        "domainname": domainname,
+        "environment": environment,
+        "fqdn": fqdn,
+        "function": function,
+        "hostname": hostname,
+        "instance": instance,
+        "location": location,
+        "number": number,
+        "service": service,
+    }
+
+
+modulesfile: str = "/etc/puppet/cosmos-modules.conf"
+modules: dict = {
+    "concat": {
+        "repo": "https://github.com/SUNET/puppetlabs-concat.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "stdlib": {
+        "repo": "https://github.com/SUNET/puppetlabs-stdlib.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "cosmos": {
+        "repo": "https://github.com/SUNET/puppet-cosmos.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "ufw": {
+        "repo": "https://github.com/SUNET/puppet-module-ufw.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "apt": {
+        "repo": "https://github.com/SUNET/puppetlabs-apt.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "vcsrepo": {
+        "repo": "https://github.com/SUNET/puppetlabs-vcsrepo.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "hiera-gpg": {
+        "repo": "https://github.com/SUNET/hiera-gpg.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "augeas": {
+        "repo": "https://github.com/SUNET/puppet-augeas.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "bastion": {
+        "repo": "https://github.com/SUNET/puppet-bastion.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "dhcp": {
+        "repo": "https://github.com/SUNET/puppetlabs-dhcp.git",
+        "upgrade": "yes",
+        "tag": "sunet_dev-2*",
+    },
+    "apparmor": {
+        "repo": "https://github.com/SUNET/puppet-apparmor.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "docker": {
+        "repo": "https://github.com/SUNET/garethr-docker.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "network": {
+        "repo": "https://github.com/SUNET/attachmentgenie-network.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+    "sunet": {
+        "repo": "https://github.com/SUNET/puppet-sunet.git",
+        "upgrade": "yes",
+        "tag": "stable-2023v1-2*",
+    },
+    "nagioscfg": {
+        "repo": "https://github.com/SUNET/puppet-nagioscfg.git",
+        "upgrade": "yes",
+        "tag": "sunet-2*",
+    },
+}
+
+# When/if we want we can do stuff to modules here
+if os_info:
+    if os_info["VERSION_CODENAME"] == "bullseye":
+        pass
+if host_info:
+    if host_info["environment"] == "test":
+        modules["sunet"]["tag"] = "testing-2*"
+
+with open(modulesfile, "w") as fh:
+    for key in modules:
+        fh.write(
+            "{0:11} {1} {2} {3}\n".format(
+                key,
+                modules[key]["repo"],
+                modules[key]["upgrade"],
+                modules[key]["tag"],
+            )
+        )