diff --git a/cluster/machines/bc01n01.hswaw.net.nix b/cluster/machines/bc01n01.hswaw.net.nix
index defcbca..8dd756d 100644
--- a/cluster/machines/bc01n01.hswaw.net.nix
+++ b/cluster/machines/bc01n01.hswaw.net.nix
@@ -26,12 +26,6 @@
     podNet = "10.10.16.0/24";
   };
 
-  hscloud.ceph = {
-    name = "k0";
-    fsid = "74592dc2-31b7-4dbe-88cf-40459dfeb354";
-    enable = true;
-  };
-
   environment.systemPackages = [
     pkgs.shadow
   ];
diff --git a/cluster/machines/bc01n02.hswaw.net.nix b/cluster/machines/bc01n02.hswaw.net.nix
index 43b61d0..904ef1b 100644
--- a/cluster/machines/bc01n02.hswaw.net.nix
+++ b/cluster/machines/bc01n02.hswaw.net.nix
@@ -25,12 +25,5 @@
     data.enable = true;
     data.podNet = "10.10.17.0/24";
   };
-
-  hscloud.ceph = {
-    name = "k0";
-    fsid = "74592dc2-31b7-4dbe-88cf-40459dfeb354";
-
-    control.enable = true;
-  };
 }
 
diff --git a/cluster/machines/dcr01s22.hswaw.net.nix b/cluster/machines/dcr01s22.hswaw.net.nix
index 742a541..9cb247f 100644
--- a/cluster/machines/dcr01s22.hswaw.net.nix
+++ b/cluster/machines/dcr01s22.hswaw.net.nix
@@ -25,17 +25,5 @@
     data.enable = true;
     data.podNet = "10.10.19.0/24";
   };
-
-  hscloud.ceph = {
-    name = "k0";
-    fsid = "74592dc2-31b7-4dbe-88cf-40459dfeb354";
-
-    osd.devices = [
-      { id = 0; path = "/dev/disk/by-id/scsi-35000c500850293e3"; uuid = "314034c5-474c-4d0d-ba41-36a881c52560";}
-      { id = 1; path = "/dev/disk/by-id/scsi-35000c500850312cb"; uuid = "a7f1baa0-0fc3-4ab1-9895-67abdc29de03";}
-      { id = 2; path = "/dev/disk/by-id/scsi-35000c5008508e3ef"; uuid = "11ac8316-6a87-48a7-a0c7-74c3cef6c2fa";}
-      { id = 3; path = "/dev/disk/by-id/scsi-35000c5008508e23f"; uuid = "c6b838d1-b08c-4788-936c-293041ed2d4d";}
-    ];
-  };
 }
 
diff --git a/cluster/machines/dcr01s24.hswaw.net.nix b/cluster/machines/dcr01s24.hswaw.net.nix
index c3ad18e..9d7da4f 100644
--- a/cluster/machines/dcr01s24.hswaw.net.nix
+++ b/cluster/machines/dcr01s24.hswaw.net.nix
@@ -25,17 +25,5 @@
     data.enable = true;
     data.podNet = "10.10.20.0/24";
   };
-
-  hscloud.ceph = {
-    name = "k0";
-    fsid = "74592dc2-31b7-4dbe-88cf-40459dfeb354";
-
-    osd.devices = [
-      { id = 4; path = "/dev/disk/by-id/scsi-35000c5008509199b"; uuid = "a2b4663d-bd8f-49b3-b0b0-195c56ba252f";}
-      { id = 5; path = "/dev/disk/by-id/scsi-35000c50085046abf"; uuid = "a2242989-ccce-4367-8813-519b64b5afdb";}
-      { id = 6; path = "/dev/disk/by-id/scsi-35000c5008502929b"; uuid = "7deac89c-22dd-4c2b-b3cc-43ff7f990fd6";}
-      { id = 7; path = "/dev/disk/by-id/scsi-35000c5008502a323"; uuid = "e305ebb3-9cac-44d2-9f1d-bbb72c8ab51f";}
-    ];
-  };
 }
 
diff --git a/ops/machines.nix b/ops/machines.nix
index 7261ce8..10b5d4f 100644
--- a/ops/machines.nix
+++ b/ops/machines.nix
@@ -19,28 +19,7 @@
     repo = "nixpkgs-channels";
     rev = "44ad80ab1036c5cc83ada4bfa451dac9939f2a10";
     sha256 = "1b61nzvy0d46cspy07szkc0rggacxiqg9v1py27pkqpj7rvawfsk";
-  }) {
-    overlays = [
-      (self: super: rec {
-        # Use a newer version of Ceph (16, Pacific, EOL 2023-06-01) than in
-        # this nixpkgs (15, Octopus, EOL 2022-06-01).
-        #
-        # This is to:
-        #  1. Fix a bug in which ceph-volume lvm create fails due to a rocksdb
-        #     mismatch (https://tracker.ceph.com/issues/49815)
-        #  2. At the time of deployment not start out with an ancient version
-        #     of Ceph.
-        #
-        # Once we unpin nixpkgsCluster past a version that contains this Ceph,
-        # this can be unoverlayed.
-        inherit (super.callPackages ./ceph {
-          boost = super.boost17x.override { enablePython = true; python = super.python3; };
-          lua = super.lua5_4;
-        }) ceph ceph-client;
-        ceph-lib = ceph.lib;
-      })
-    ];
-  };
+  }) { };
 
   # mkMachine builds NixOS modules into a NixOS derivation.
   # It:
@@ -112,7 +91,6 @@
     ../cluster/machines/modules/base.nix
     ../cluster/machines/modules/kube-controlplane.nix
     ../cluster/machines/modules/kube-dataplane.nix
-    ../cluster/machines/modules/ceph.nix
     path
   ];
 
@@ -120,7 +98,6 @@
     ../cluster/machines/modules/base.nix
     ../cluster/machines/modules/kube-controlplane.nix
     ../cluster/machines/modules/kube-dataplane.nix
-    ../cluster/machines/modules/ceph.nix
     path
   ];