Remove unnecessary config

Signed-off-by: Tommy <contact@tommytran.io>

README.md

@@ -1,9 +1,8 @@
 # Fedora-CoreOS-Ignition
 Ignition configurations for Fedora CoreOS<br />
 
-# Notes
+## Notes
-1. These are the configs I personally use on my systems. You **MUST** edit the files before you use them. At the very least, you should add your SSH keys or password hash.<br />
+These configurations are tailored for Metropolis.nexus environment:
-2. Only ED25519 SSH keys are accepted with the SSHD hardening configuration. If you do not use ED25519 keys, you will need to adjust the `/etc/ssh/sshd_config.d/10-custom.conf` file accordingly.
+- Firewalling is handled by Proxmox (not the individual VMs)
-3. If you create a passwordless user that requires administrative privileges, ensure that it is part of the `sudo` group (CoreOS allows this group to use sudo without a password) as the configs will disable empty password system authentication.
+- DNSSEC validation is done by either OPNsense or a central VM dedicated to running the DNS resolver
-4. These configurations are made with a VPS in mind. You should adapt it for a bare metal deployment if that is what you are using (adding additional kernel parameters, configuring drive encryption, configuring storage, etc). You should also change the tuned profile from `virtual-guest` appropriately.
+- The `docker-auto-update@.timer` in `/etc/systemd/system` can be enabled to have automatic updates for your containers created by Docker Compose.
-5. The docker-compose-updater.service in `/etc/systemd/system` can be enabled to have automatic updates for your containers created by Docker Compose.

etc/docker/daemon.json

@@ -1,39 +0,0 @@
-{
-    "default-runtime": "runsc-systrap",
-    "runtimes": {
-        "runsc-kvm": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=kvm",
-                "--network=host"
-            ]
-        },
-        "runsc-systrap": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=systrap",
-                "--network=host"
-            ]
-        },
-        "runsc-kvm --host-uds=open": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=kvm",
-                "--network=host",
-                "--host-uds=open"
-            ]
-        },
-        "runsc-systrap --host-uds=open": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=systrap",
-                "--network=host",
-                "--host-uds=open"
-            ]
-        }
-    },
-    "default-address-pools": [
-        { "base": "242.242.0.0/16", "size": 24 }
-    ],
-    "dns" : [ "242.242.0.1" ]
-}

etc/tuned/active_profile

@@ -1 +0,0 @@
-virtual-guest

etc/tuned/profile_mode

@@ -1 +0,0 @@
-manual

etc/unbound/unbound.conf

@@ -1,45 +0,0 @@
-server:
-  chroot: ""
-
-  auto-trust-anchor-file: "/var/lib/unbound/root.key"
-  trust-anchor-signaling: yes
-  root-key-sentinel: yes
-
-  tls-cert-bundle: /etc/ssl/certs/ca-certificates.crt
-  tls-ciphers: "PROFILE=SYSTEM"
-
-  hide-http-user-agent: yes
-  hide-identity: yes
-  hide-trustanchor: yes
-  hide-version: yes
-
-  deny-any: yes
-  harden-algo-downgrade: yes
-  harden-large-queries: yes
-  harden-referral-path: yes
-  harden-short-bufsize: yes
-  ignore-cd-flag: yes
-  max-udp-size: 3072
-  module-config: "validator iterator"
-  qname-minimisation-strict: yes
-  unwanted-reply-threshold: 10000000
-  use-caps-for-id: yes
-
-  outgoing-port-permit: 1024-65535
-
-  prefetch: yes
-  prefetch-key: yes
-
-  ip-transparent: yes
-  interface: 127.0.0.1
-  interface: ::1
-  interface: 242.242.0.1
-  access-control: 242.242.0.0/16 allow
-
-forward-zone:
-  name: "."
-  forward-tls-upstream: yes
-  forward-addr: 1.1.1.2@853#security.cloudflare-dns.com
-  forward-addr: 1.0.0.2@853#security.cloudflare-dns.com
-  forward-addr: 2606:4700:4700::1112@853#security.cloudflare-dns.com
-  forward-addr: 2606:4700:4700::1002@853#security.cloudflare-dns.com

etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo

@@ -1,10 +0,0 @@
-[copr:copr.fedorainfracloud.org:secureblue:hardened_malloc]
-name=Copr repo for hardened_malloc owned by secureblue
-baseurl=https://download.copr.fedorainfracloud.org/results/secureblue/hardened_malloc/fedora-$releasever-$basearch/
-type=rpm-md
-skip_if_unavailable=True
-gpgcheck=1
-gpgkey=https://download.copr.fedorainfracloud.org/results/secureblue/hardened_malloc/pubkey.gpg
-repo_gpgcheck=0
-enabled=1
-enabled_metadata=1

etc/yum.repos.d/docker-ce.repo

@@ -1,62 +0,0 @@
-[docker-ce-stable]
-name=Docker CE Stable - $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/$basearch/stable
-enabled=1
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-stable-debuginfo]
-name=Docker CE Stable - Debuginfo $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/debug-$basearch/stable
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-stable-source]
-name=Docker CE Stable - Sources
-baseurl=https://download.docker.com/linux/fedora/$releasever/source/stable
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-test]
-name=Docker CE Test - $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/$basearch/test
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-test-debuginfo]
-name=Docker CE Test - Debuginfo $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/debug-$basearch/test
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-test-source]
-name=Docker CE Test - Sources
-baseurl=https://download.docker.com/linux/fedora/$releasever/source/test
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-nightly]
-name=Docker CE Nightly - $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/$basearch/nightly
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-nightly-debuginfo]
-name=Docker CE Nightly - Debuginfo $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/debug-$basearch/nightly
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg
-
-[docker-ce-nightly-source]
-name=Docker CE Nightly - Sources
-baseurl=https://download.docker.com/linux/fedora/$releasever/source/nightly
-enabled=0
-gpgcheck=1
-gpgkey=https://download.docker.com/linux/fedora/gpg

etc/zincati/config.d/51-rollout-wariness.toml

@@ -1,2 +0,0 @@
-[identity]
-rollout_wariness = 0

etc/zincati/config.d/55-updates-strategy.toml

@@ -1,10 +0,0 @@
-[updates]
-strategy = "periodic"
-
-[updates.periodic]
-time_zone = "localtime"
-
-[[updates.periodic.window]]
-days = [ "Tue", "Fri" ]
-start_time = "2:00"
-length_minutes = 60

kargs

@@ -1,17 +0,0 @@
-# Copyright (C) 2021-2024 Thien Tran
-#
-# 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.
-
-# This file is just incase you want to quickly copy-paste the kernel arguments into `rpm-ostree kargs`
-
-mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off lockdown=confidentiality module.sig_enforce=1 console=tty0 console=ttyS0,115200

x86.yml

@@ -1,4 +1,4 @@
-# Copyright (C) 2021-2024 Thien Tran
+# Copyright (C) 2021-2025 Thien Tran
 #
 # 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
@@ -13,7 +13,8 @@
 # the License.
 
 variant: fcos
-version: 1.5.0
+version: 1.6.0
+
 passwd:
   users:
     - name: tomster
@@ -22,7 +23,7 @@ passwd:
       groups:
         - wheel
         - sudo
-    - name: unpriv
+
 systemd:
   units:
     - name: postinst.service
@@ -34,8 +35,6 @@ systemd:
         # `ConditionFirstBoot=true` services won't rerun on the next boot.
         After=systemd-machine-id-commit.service
         After=network-online.target
-        # We run before `zincati.service` to avoid conflicting rpm-ostree
-        # transactions.
         Before=zincati.service
         ConditionPathExists=!/var/lib/%N.stamp
 
@@ -46,259 +45,205 @@ systemd:
         ExecStart=/usr/sbin/setsebool -P container_use_cephfs off
         ExecStart=/usr/sbin/setsebool -P virt_use_nfs off
         ExecStart=/usr/sbin/setsebool -P virt_use_samba off
-        ExecStart=/usr/bin/rpm-ostree override remove cifs-utils containerd docker-cli dnsmasq google-compute-engine-guest-configs-udev iptables-legacy iptables-legacy-libs moby-engine runc samba-client-libs samba-common libwbclient libsmbclient samba-common-libs sssd-client sssd-ldap sssd-common sssd-krb5-common sssd-nfs-idmap sssd-ad sssd-krb5 sssd-ipa sssd-common-pac systemd-resolved
+        ExecStart=/usr/bin/systemctl start gvisor-auto-update.service
-        ExecStart=/usr/bin/rpm-ostree install docker-ce docker-compose-plugin firewalld hardened_malloc qemu-guest-agent tuned unbound
+        ExecStart=/usr/bin/rpm-ostree override remove containerd docker-cli moby-engine runc systemd-resolved
+        ExecStart=/usr/bin/rpm-ostree install docker-ce docker-compose-plugin hardened_malloc qemu-guest-agent tuned
         ExecStart=/usr/bin/sed -i 's/\s+nullok//g' /etc/pam.d/system-auth
-        ExecStart=/usr/bin/echo 'EDITOR=nano' >> /etc/bashrc
+        ExecStart=/usr/bin/systemctl disable --now systemd-resolved
-        ExecStart=/usr/bin/echo 'VISUAL=nano' >> /etc/bashrc
+        ExecStart=/usr/bin/rm /etc/resolv.conf
-        ExecStart=/usr/bin/systemctl disable systemd-resolved
         ExecStart=/usr/bin/touch /var/lib/%N.stamp
         ExecStart=/usr/bin/systemctl --no-block reboot
 
         [Install]
         WantedBy=multi-user.target
+
     - name: postinst2.service
       enabled: true
       contents: |
         [Unit]
-        Description=Initial System Setup Part 2
-        # We run this after the packages have been overlayed
-        After=network-online.target
-        ConditionPathExists=!/var/lib/%N.stamp
         ConditionPathExists=/var/lib/postinst.stamp
 
         [Service]
         Type=oneshot
         RemainAfterExit=yes
         ExecStart=/usr/bin/echo 'libhardened_malloc.so' > /etc/ld.so.preload
-        ExecStart=/usr/bin/systemctl enable --now firewalld
+        ExecStart=/usr/bin/systemctl disable postinst
-        ExecStart=/usr/bin/firewall-cmd --lockdown-on
+        ExecStart=/usr/bin/rm /etc/systemd/system/postinst.service
-        ExecStart=/usr/bin/firewall-cmd --permanent --remove-service=mds
+        ExecStart=/usr/bin/rm /var/lib/postinst.stamp
-        ExecStart=/usr/bin/firewall-cmd --permanent --remove-service=dhcpv6-client
+        ExecStart=/usr/bin/systemctl disable postinst2
-        ExecStart=/usr/bin/rm /etc/unbound/unbound_control.key
+        ExecStart=/usr/bin/rm /etc/systemd/system/postinst2.service
-        ExecStart=/usr/bin/touch /var/lib/%N.stamp
         ExecStart=/usr/bin/systemctl --no-block reboot
 
         [Install]
         WantedBy=multi-user.target
-    - name: gvisor-updater.service
-      enabled: true
-      contents: |
-        [Unit]
-        Description=Update gVisor
-        Requires=network-online.target
-        After=network-online.target
-        Before=docker.service
 
-        [Service]
+    - name: debug-shell.service
-        Type=oneshot
-        RuntimeDirectory=gvisor-updater
-        WorkingDirectory=/run/gvisor-updater
-        
-        ExecStart=/usr/bin/sleep 5
-        ExecStart=curl -sS --remote-name-all 'https://storage.googleapis.com/gvisor/releases/release/latest/x86_64/runsc' 'https://storage.googleapis.com/gvisor/releases/release/latest/x86_64/runsc.sha512' 'https://storage.googleapis.com/gvisor/releases/release/latest/x86_64/containerd-shim-runsc-v1' 'https://storage.googleapis.com/gvisor/releases/release/latest/x86_64/containerd-shim-runsc-v1.sha512'
-        ExecStart=sha512sum -c runsc.sha512 -c containerd-shim-runsc-v1.sha512
-        ExecStart=+chown root:root runsc containerd-shim-runsc-v1
-        ExecStart=+chmod a+rx runsc containerd-shim-runsc-v1
-        ExecStart=+mv -Z runsc containerd-shim-runsc-v1 /usr/local/bin/
-
-        DynamicUser=true
-        CapabilityBoundingSet=
-        LockPersonality=true
-        MemoryDenyWriteExecute=true
-        NoNewPrivileges=true
-        PrivateDevices=true
-        PrivateIPC=true
-        PrivateTmp=true
-        ProcSubset=pid
-        ProtectClock=true
-        ProtectControlGroups=true
-        ProtectHome=true
-        ProtectHostname=true
-        ProtectKernelLogs=true
-        ProtectKernelModules=true
-        ProtectKernelTunables=true
-        ProtectProc=invisible
-        ProtectSystem=strict
-        RestrictAddressFamilies=
-        RestrictNamespaces=true
-        RestrictRealtime=true
-        RestrictSUIDSGID=true
-        RuntimeDirectoryMode=700
-        SystemCallArchitectures=native
-        SystemCallFilter=@system-service
-        SystemCallFilter=~@obsolete
-
-        [Install]
-        WantedBy=multi-user.target
-    - name: docker-compose-updater@.service
       enabled: false
-      contents: |
+      mask: true 
-        [Unit]
+    - name: podman-auto-update.timer
-        Description=Docker Compose Updater for /srv/%I
-        Requires=network-online.target
-        Requisite=docker.service
-        After=network-online.target
-        After=docker.service
-
-        [Service]
-        Type=oneshot
-        User=root
-        Group=root
-        WorkingDirectory=/srv/%i
-        ExecStart=/usr/bin/docker image prune -f -a --filter 'until=240h'
-        #ExecStart=/usr/bin/git pull
-        ExecStart=/usr/bin/docker compose pull
-        ExecStart=/usr/bin/docker compose up -d
-    - name: docker-compose-updater@.timer
-      enabled: false
-      contents: |
-        [Unit]
-        Description=Run docker-compose-updater for /srv/%I once a week, 15 mintues after OS updates
-
-        [Timer]
-        OnCalendar=Fri 2:15
-        Persistent=true
-
-        [Install]
-        WantedBy=timers.target
-    - name: docker.service
-      enabled: true
-    - name: fstrim.timer
-      enabled: true
-    - name: systemd-oomd.service
       enabled: true
     - name: rpm-ostree-countme.timer
       enabled: false
       mask: true
-    - name: sshd.service
+    - name: irqbalance.service
       enabled: false
-    - name: sshd.socket
+      mask: true
-      enabled: true
     - name: kdump.service
       enabled: false
       mask: true
-    - name: debug-shell.service
+
-      enabled: false
-      mask: true
-    - name: coreos-cni-networking-check.service
-      enabled: false
-      mask: true
 storage:
   files:
-    - path: /etc/zincati/config.d/51-rollout-wariness.toml
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/zincati/config.d/51-rollout-wariness.toml
-    - path: /etc/zincati/config.d/55-updates-strategy.toml
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/zincati/config.d/55-updates-strategy.toml
-    - path: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo
-    - path: /etc/yum.repos.d/docker-ce.repo
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/yum.repos.d/docker-ce.repo
-    - path: /etc/docker/daemon.json
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/docker/daemon.json
     - path: /etc/chrony.conf
       contents:
-        source: https://raw.githubusercontent.com/GrapheneOS/infrastructure/refs/heads/main/etc/chrony.conf
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/chrony.conf
       overwrite: true
-    - path: /etc/modprobe.d/server-blacklist.conf
-      contents:
-        source: https://raw.githubusercontent.com/secureblue/secureblue/live/files/system/usr/etc/modprobe.d/blacklist.conf
-    - path: /etc/sysctl.d/99-server.conf
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysctl.d/99-server.conf
-    - path: /etc/systemd/system/NetworkManager.service.d/99-brace.conf
-      contents:
-        source: https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf
-    - path: /etc/systemd/system/irqbalance.service.d/99-brace.conf
-      contents:
-        source: https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/irqbalance.service.d/99-brace.conf
-    - path: /etc/ssh/sshd_config.d/10-custom.conf
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/sshd_config.d/10-custom.conf
-    - path: /etc/ssh/ssh_config.d/10-custom.conf
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf
-    - path: /etc/systemd/system/sshd.service.d/override.conf
-      contents:
-        source: https://raw.githubusercontent.com/GrapheneOS/infrastructure/refs/heads/main/etc/systemd/system/sshd.service.d/override.conf
-    - path: /etc/tuned/active_profile
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/tuned/active_profile
-    - path: /etc/tuned/profile_mode
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/tuned/profile_mode
-    - path: /etc/systemd/zram-generator.conf
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/zram-generator.conf
-    - path: /etc/security/limits.d/30-disable-coredump.conf
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf
-    - path: /etc/systemd/coredump.conf.d
-      contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/coredump.conf.d/disable.conf
     - path: /etc/sysconfig/chronyd
       overwrite: true
       contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/sysconfig/chronyd
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/sysconfig/chronyd
-    - path: /etc/unbound/unbound.conf
+
+    - path: /etc/containers/containers.conf
       contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Fedora-CoreOS-Ignition/main/etc/unbound/unbound.conf
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/containers/containers.conf
-    - path: /etc/systemd/system/unbound.service.d/override.conf
+    - path: /etc/docker/daemon.json
       contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/system/unbound.service.d/override.conf
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/docker/daemon.json
+
     - path: /etc/issue
       overwrite: true
       contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/issue
     - path: /etc/issue.net
       overwrite: true
       contents:
-        source: https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/issue
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/issue
+
+    - path: /etc/modprobe.d/server-blacklist.conf
+      contents:
+        source: https://raw.githubusercontent.com/secureblue/secureblue/live/files/system/etc/modprobe.d/blacklist.conf
+
+    - path: /etc/security/limits.d/30-disable-coredump.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/security/limits.d/30-disable-coredump.conf
+
+    - path: /etc/ssh/sshd_config.d/10-custom.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/ssh/sshd_config.d/10-custom.conf
+    - path: /etc/ssh/ssh_config.d/10-custom.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/ssh/ssh_config.d/10-custom.conf
+    - path: /etc/systemd/system/sshd.service.d/override.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/system/sshd.service.d/override.conf
+
+    - path: /etc/sysctl.d/99-server.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/sysctl.d/99-server.conf
+
+    - path: /etc/systemd/coredump.conf.d
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/coredump.conf.d/disable.conf
+
+    - path: /etc/systemd/system/docker-auto-update@.service
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/refs/heads/main/etc/systemd/system/docker-auto-update%40.service
+    - path: /etc/systemd/system/docker-auto-update@.timer
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/refs/heads/main/etc/systemd/system/docker-auto-update%40.timer
+
+    - path: /etc/systemd/system/gvisor-auto-update.service
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/system/gvisor-auto-update.service
+    - path: /etc/systemd/system/gvisor-auto-update.timer
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/system/gvisor-auto-update.timer
+
+    # Annoying AGPL3 license
+    - path: /etc/systemd/system/NetworkManager.service.d/99-brace.conf
+      contents:
+        source: https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf
+
+    - path: /etc/systemd/system/podman-auto-update.timer.d/override.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/system/podman-auto-update.timer.d/override.conf
+
+    - path: /etc/systemd/zram-generator.conf
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/systemd/zram-generator.conf
+
+    - path: /etc/tuned/active_profile
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/tuned/active_profile
+    - path: /etc/tuned/profile_mode
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/tuned/profile_mode
+
+    - path: /etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/yum.repos.d/_copr:copr.fedorainfracloud.org:secureblue:hardened_malloc.repo
+    - path: /etc/yum.repos.d/docker-ce.repo
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/refs/heads/main/etc/yum.repos.d/docker-ce.repo
+
+    - path: /etc/zincati/config.d/51-rollout-wariness.toml
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/zincati/config.d/51-rollout-wariness.toml
+    - path: /etc/zincati/config.d/55-updates-strategy.toml
+      contents:
+        source: https://raw.githubusercontent.com/Metropolis-nexus/Common-Files/main/etc/zincati/config.d/55-updates-strategy.toml
+
   links:
-    - path: /etc/localtime
-      target: ../usr/share/zoneinfo/Etc/UTC
-    - path: /etc/systemd/system/multi-user.target.wants/unbound.service
-      target: /usr/lib/systemd/system/unbound.service
     - path: /etc/systemd/system/multi-user.target.wants/tuned.service
       target: /usr/lib/systemd/system/tuned.service
+    - path: /etc/systemd/system/timers.target.wants/gvisor-auto-update.timer
+      target: /etc/systemd/system/gvisor-auto-update.timer
+
 kernel_arguments:
   should_exist:
+  # CPU vulnerabilities
     - mitigations=auto,nosmt
+    - nosmt=force
     - spectre_v2=on
     - spectre_bhi=on
     - spec_store_bypass_disable=on
     - tsx=off
-    - kvm.nx_huge_pages=force
-    - nosmt=force
     - l1d_flush=on
     - l1tf=full,force 
     - kvm-intel.vmentry_l1d_flush=always
     - spec_rstack_overflow=safe-ret
     - gather_data_sampling=force 
     - reg_file_data_sampling=on
-    - random.trust_bootloader=off
+    - kvm.nx_huge_pages=force
-    - random.trust_cpu=off
+
-    - intel_iommu=on
+  # DMA protection
     - amd_iommu=force_isolation
-    - efi=disable_early_pci_dma
+    - intel_iommu=on
     - iommu=force
-    - iommu.passthrough=0
     - iommu.strict=1
+    - iommu.passthrough=0
+    - efi=disable_early_pci_dma
+
+  # Memory protection
     - slab_nomerge
     - init_on_alloc=1
     - init_on_free=1
-    - pti=on
-    - vsyscall=none
-    - ia32_emulation=0
     - page_alloc.shuffle=1
+    - pti=on
     - randomize_kstack_offset=on
-    - debugfs=off
+
+  # ASR
     - lockdown=confidentiality
     - module.sig_enforce=1
+    - oops=panic
+    - vsyscall=none
+    - ia32_emulation=0
+    - debugfs=off
+
+  # Entropy
+    - random.trust_bootloader=off
+    - random.trust_cpu=off
+
+  # Serial support for Proxmox
     - console=tty0
     - console=ttyS0,115200