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source/system: Add reading vendor information

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Add reading vendor information from /sys/devices/virtual/dmi/id/sys_vendor

Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>
This commit is contained in:
Oleg Zhurakivskyy 2024-01-30 13:29:12 +02:00
parent 491627e613
commit 2f62aed06d
3 changed files with 32 additions and 0 deletions
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2
docs/usage/customization-guide.md
View file

@ -979,6 +979,8 @@ The following features are available for matching:
| | | **`<sysfs-attribute>`** | string | Sysfs network interface attribute, available attributes: `dax`, `rotational`, `nr_zones`, `zoned` | | | | **`<sysfs-attribute>`** | string | Sysfs network interface attribute, available attributes: `dax`, `rotational`, `nr_zones`, `zoned` |
| **`system.osrelease`** | attribute | | | System identification data from `/etc/os-release` | | **`system.osrelease`** | attribute | | | System identification data from `/etc/os-release` |
| | | **`<parameter>`** | string | One parameter from `/etc/os-release` | | | | **`<parameter>`** | string | One parameter from `/etc/os-release` |
| **`system.dmiid`** | attribute | | | DMI identification data from `/sys/devices/virtual/dmi/id/` |
| | | **`sys_vendor`** | string | Vendor name from `/sys/devices/virtual/dmi/id/sys_vendor` |
| **`system.name`** | attribute | | | System name information | | **`system.name`** | attribute | | | System name information |
| | | **`nodename`** | string | Name of the kubernetes node object | | | | **`nodename`** | string | Name of the kubernetes node object |
| **`usb.device`** | instance | | | USB devices present in the system | | **`usb.device`** | instance | | | USB devices present in the system |

3
examples/nodefeature.yaml
View file

@ -65,6 +65,9 @@ spec:
VERSION_ID: "22.04" VERSION_ID: "22.04"
VERSION_ID.major: "22" VERSION_ID.major: "22"
VERSION_ID.minor: "04" VERSION_ID.minor: "04"
system.dmiid:
elements:
sys_vendor: VendorUnknown
flags: flags:
cpu.cpuid: cpu.cpuid:
elements: elements:

27
source/system/system.go
View file

@ -43,6 +43,7 @@ const Name = "system"
const ( const (
OsReleaseFeature = "osrelease" OsReleaseFeature = "osrelease"
NameFeature = "name" NameFeature = "name"
DmiIdFeature = "dmiid"
) )
// systemSource implements the FeatureSource and LabelSource interfaces. // systemSource implements the FeatureSource and LabelSource interfaces.
@ -101,6 +102,22 @@ func (s *systemSource) Discover() error {
} }
} }
// Get DMI ID attributes
dmiIDAttributeNames := []string{"sys_vendor"}
dmiAttrs := make(map[string]string)
for _, name := range dmiIDAttributeNames {
val, err := getDmiIDAttribute(name)
if err != nil {
klog.ErrorS(err, "failed to get DMI entry", "attributeName", name)
} else {
dmiAttrs[name] = val
}
}
if len(dmiAttrs) > 0 {
s.features.Attributes[DmiIdFeature] = nfdv1alpha1.NewAttributeFeatures(dmiAttrs)
}
klog.V(3).InfoS("discovered features", "featureSource", s.Name(), "features", utils.DelayedDumper(s.features)) klog.V(3).InfoS("discovered features", "featureSource", s.Name(), "features", utils.DelayedDumper(s.features))
return nil return nil
@ -153,6 +170,16 @@ func splitVersion(version string) map[string]string {
return components return components
} }
// Read /sys/devices/virtual/dmi/id attribute
func getDmiIDAttribute(name string) (string, error) {
s, err := os.ReadFile(hostpath.SysfsDir.Path("devices/virtual/dmi/id/", name))
if err != nil {
return "", err
}
return strings.TrimSpace(string(s)), nil
}
func init() { func init() {
source.Register(&src) source.Register(&src)
} }