Begin implementation of ROCm driver installation

charms/slurmd/charmcraft.yaml

@@ -78,6 +78,20 @@ config:
          $ juju config slurmd nhc-conf="$(cat extra-nhc.conf)"
         ```
 
+    gpu:
+      default: ""
+      type: string
+      description: >
+        Type of GPU driver to install.
+
+        Available options: [`amd`].
+
+        Example usage:
+        ```bash
+         $ juju config slurmd gpu=amd
+        ```
+
+
 actions:
   node-configured:
     description: Remove a node from DownNodes when the reason is `New node`.

charms/slurmd/src/constants.py

@@ -40,3 +40,58 @@
 =cs1s
 -----END PGP PUBLIC KEY BLOCK-----
 """
+
+ROCM_PPA_KEY = """
+----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
+
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+=UOE+
+-----END PGP PUBLIC KEY BLOCK-----
+"""

charms/slurmd/src/slurmd_ops.py

@@ -15,7 +15,7 @@
 from typing import Any, Dict
 
 import distro
-from constants import MUNGE_KEY_PATH, SLURM_GROUP, SLURM_USER, UBUNTU_HPC_PPA_KEY
+from constants import MUNGE_KEY_PATH, SLURM_GROUP, SLURM_USER, UBUNTU_HPC_PPA_KEY, ROCM_PPA_KEY
 
 import charms.operator_libs_linux.v0.apt as apt  # type: ignore [import-untyped]
 import charms.operator_libs_linux.v1.systemd as systemd  # type: ignore [import-untyped]
@@ -129,6 +129,47 @@ def install(self) -> bool:
 
         return package_installed
 
+class ROCmPackagesLifecycleManager:
+    """Facilitate ROCm packages lifecycles."""
+
+    _KEYRING_PATH = Path(f"/usr/share/keyrings/rocm.gpg")
+
+    def install(self) -> bool:
+        """Install ROCm packages using apt."""
+
+        if self._KEYRING_PATH.exists():
+            self._KEYRING_PATH.unlink()
+        self._KEYRING_PATH.write_text(ROCM_PPA_KEY)
+
+        amdgpu_repo = apt.DebianRepository(
+            enabled=True,
+            repotype="deb",
+            uri="https://repo.radeon.com/amdgpu/6.2/ubuntu",
+            release=distro.codename(),
+            groups=["main"],
+            gpg_key_filename=self._KEYRING_PATH,
+            options={
+                # TODO: See if there's a way to get the charm architecture from ops.
+                "arch": "amd64"
+            }
+        )
+
+        rocm_repo = apt.DebianRepository(
+            enabled=True,
+            repotype="deb",
+            uri="https://repo.radeon.com/rocm/apt/6.2",
+            release=distro.codename(),
+            groups=["main"],
+            gpg_key_filename=self._KEYRING_PATH,
+            options={
+                "arch": "amd64"
+            }
+        )
+
+        repositories = apt.RepositoryMapping()
+        repositories.add(amdgpu_repo)
+        repositories.add(rocm_repo)
+
 
 class SlurmdManager:
     """SlurmdManager."""