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Add cpu vulnerabilities reporting from sysfs (prometheus#2721)
* Add cpu vulnerabilities reporting from sysfs --------- Signed-off-by: Michal Wasilewski <michal@mwasilewski.net>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| // Copyright 2023 The Prometheus Authors | ||
| // 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. | ||
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| package collector | ||
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| import ( | ||
| "fmt" | ||
|
|
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| "github.com/go-kit/log" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/prometheus/procfs/sysfs" | ||
| ) | ||
|
|
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| const ( | ||
| cpuVulerabilitiesCollector = "cpu_vulnerabilities" | ||
| ) | ||
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| var ( | ||
| vulnerabilityDesc = prometheus.NewDesc( | ||
| prometheus.BuildFQName(namespace, cpuVulerabilitiesCollector, "info"), | ||
| "Details of each CPU vulnerability reported by sysfs. The value of the series is an int encoded state of the vulnerability. The same state is stored as a string in the label", | ||
| []string{"codename", "state"}, | ||
| nil, | ||
| ) | ||
| ) | ||
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| type cpuVulnerabilitiesCollector struct{} | ||
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| func init() { | ||
| registerCollector(cpuVulerabilitiesCollector, defaultDisabled, NewVulnerabilitySysfsCollector) | ||
| } | ||
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| func NewVulnerabilitySysfsCollector(logger log.Logger) (Collector, error) { | ||
| return &cpuVulnerabilitiesCollector{}, nil | ||
| } | ||
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| func (v *cpuVulnerabilitiesCollector) Update(ch chan<- prometheus.Metric) error { | ||
| fs, err := sysfs.NewFS(*sysPath) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to open sysfs: %w", err) | ||
| } | ||
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| vulnerabilities, err := fs.CPUVulnerabilities() | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get vulnerabilities: %w", err) | ||
| } | ||
|
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| for _, vulnerability := range vulnerabilities { | ||
| ch <- prometheus.MustNewConstMetric( | ||
| vulnerabilityDesc, | ||
| prometheus.GaugeValue, | ||
| 1.0, | ||
| vulnerability.CodeName, | ||
| sysfs.VulnerabilityHumanEncoding[vulnerability.State], | ||
| ) | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -12,6 +12,7 @@ enabled_collectors=$(cat << COLLECTORS | |
| conntrack | ||
| cpu | ||
| cpufreq | ||
| cpu_vulnerabilities | ||
| diskstats | ||
| dmi | ||
| drbd | ||
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