add node_cpu_info metric

Contains information gathered from /proc/cpuinfo

Signed-off-by: Paul Gier <pgier@redhat.com>

6 files changed, 276 insertions, 0 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b60da3c..3299dbf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@
 * [CHANGE] Add `mountaddr` label to NFS metrics. #1417
 * [FEATURE] Add new schedstat collector #1389
 * [FEATURE] Add uname support for Darwin and OpenBSD #1433
+* [FEATURE] Add new metric node_cpu_info #1489
 * [ENHANCEMENT] Include additional XFS runtime statistics. #1423
 * [ENHANCEMENT] Report non-fatal collection errors in the exporter metric. #1439
 * [ENHANCEMENT] Expose IPVS firewall mark as a label #1455
diff --git a/collector/cpu_linux.go b/collector/cpu_linux.go
index f915d62..c6404c3 100644
--- a/collector/cpu_linux.go
+++ b/collector/cpu_linux.go
@@ -23,16 +23,22 @@ import (
         "github.com/prometheus/client_golang/prometheus"
         "github.com/prometheus/common/log"
         "github.com/prometheus/procfs"
+        kingpin "gopkg.in/alecthomas/kingpin.v2"
 )
 
 type cpuCollector struct {
         fs                 procfs.FS
         cpu                *prometheus.Desc
+        cpuInfo            *prometheus.Desc
         cpuGuest           *prometheus.Desc
         cpuCoreThrottle    *prometheus.Desc
         cpuPackageThrottle *prometheus.Desc
 }
 
+var (
+        enableCPUInfo = kingpin.Flag("collector.cpu.info", "Enables metric cpu_info").Bool()
+)
+
 func init() {
         registerCollector("cpu", defaultEnabled, NewCPUCollector)
 }
@@ -46,6 +52,11 @@ func NewCPUCollector() (Collector, error) {
         return &cpuCollector{
                 fs:  fs,
                 cpu: nodeCPUSecondsDesc,
+                cpuInfo: prometheus.NewDesc(
+                        prometheus.BuildFQName(namespace, cpuCollectorSubsystem, "info"),
+                        "CPU information from /proc/cpuinfo.",
+                        []string{"package", "core", "cpu", "vendor", "family", "model", "microcode", "cachesize"}, nil,
+                ),
                 cpuGuest: prometheus.NewDesc(
                         prometheus.BuildFQName(namespace, cpuCollectorSubsystem, "guest_seconds_total"),
                         "Seconds the cpus spent in guests (VMs) for each mode.",
@@ -66,6 +77,11 @@ func NewCPUCollector() (Collector, error) {
 
 // Update implements Collector and exposes cpu related metrics from /proc/stat and /sys/.../cpu/.
 func (c *cpuCollector) Update(ch chan<- prometheus.Metric) error {
+        if *enableCPUInfo {
+                if err := c.updateInfo(ch); err != nil {
+                        return err
+                }
+        }
         if err := c.updateStat(ch); err != nil {
                 return err
         }
@@ -75,6 +91,28 @@ func (c *cpuCollector) Update(ch chan<- prometheus.Metric) error {
         return nil
 }
 
+// updateInfo reads /proc/cpuinfo
+func (c *cpuCollector) updateInfo(ch chan<- prometheus.Metric) error {
+        info, err := c.fs.CPUInfo()
+        if err != nil {
+                return err
+        }
+        for _, cpu := range info {
+                ch <- prometheus.MustNewConstMetric(c.cpuInfo,
+                        prometheus.GaugeValue,
+                        1,
+                        cpu.PhysicalID,
+                        cpu.CoreID,
+                        fmt.Sprintf("%d", cpu.Processor),
+                        cpu.VendorID,
+                        cpu.CPUFamily,
+                        cpu.Model,
+                        cpu.Microcode,
+                        cpu.CacheSize)
+        }
+        return nil
+}
+
 // updateThermalThrottle reads /sys/devices/system/cpu/cpu* and expose thermal throttle statistics.
 func (c *cpuCollector) updateThermalThrottle(ch chan<- prometheus.Metric) error {
         cpus, err := filepath.Glob(sysFilePath("devices/system/cpu/cpu[0-9]*"))
diff --git a/collector/fixtures/e2e-64k-page-output.txt b/collector/fixtures/e2e-64k-page-output.txt
index 4ac50a1..5751d39 100644
--- a/collector/fixtures/e2e-64k-page-output.txt
+++ b/collector/fixtures/e2e-64k-page-output.txt
@@ -208,6 +208,16 @@ node_cpu_guest_seconds_total{cpu="6",mode="nice"} 0.07
 node_cpu_guest_seconds_total{cpu="6",mode="user"} 0.08
 node_cpu_guest_seconds_total{cpu="7",mode="nice"} 0.08
 node_cpu_guest_seconds_total{cpu="7",mode="user"} 0.09
+# HELP node_cpu_info CPU information from /proc/cpuinfo.
+# TYPE node_cpu_info gauge
+node_cpu_info{cachesize="8192 KB",core="0",cpu="0",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="0",cpu="4",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="1",cpu="1",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="1",cpu="5",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="2",cpu="2",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="2",cpu="6",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="3",cpu="3",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="3",cpu="7",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
 # HELP node_cpu_package_throttles_total Number of times this cpu package has been throttled.
 # TYPE node_cpu_package_throttles_total counter
 node_cpu_package_throttles_total{package="0"} 30
diff --git a/collector/fixtures/e2e-output.txt b/collector/fixtures/e2e-output.txt
index 607d250..0b76eeb 100644
--- a/collector/fixtures/e2e-output.txt
+++ b/collector/fixtures/e2e-output.txt
@@ -208,6 +208,16 @@ node_cpu_guest_seconds_total{cpu="6",mode="nice"} 0.07
 node_cpu_guest_seconds_total{cpu="6",mode="user"} 0.08
 node_cpu_guest_seconds_total{cpu="7",mode="nice"} 0.08
 node_cpu_guest_seconds_total{cpu="7",mode="user"} 0.09
+# HELP node_cpu_info CPU information from /proc/cpuinfo.
+# TYPE node_cpu_info gauge
+node_cpu_info{cachesize="8192 KB",core="0",cpu="0",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="0",cpu="4",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="1",cpu="1",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="1",cpu="5",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="2",cpu="2",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="2",cpu="6",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="3",cpu="3",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
+node_cpu_info{cachesize="8192 KB",core="3",cpu="7",family="6",microcode="0xb4",model="142",package="0",vendor="GenuineIntel"} 1
 # HELP node_cpu_package_throttles_total Number of times this cpu package has been throttled.
 # TYPE node_cpu_package_throttles_total counter
 node_cpu_package_throttles_total{package="0"} 30
diff --git a/collector/fixtures/proc/cpuinfo b/collector/fixtures/proc/cpuinfo
new file mode 100644
index 0000000..f297405
--- /dev/null
+++ b/collector/fixtures/proc/cpuinfo
@@ -0,0 +1,216 @@
+processor       : 0
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 799.998
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 0
+cpu cores       : 4
+apicid          : 0
+initial apicid  : 0
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 1
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 800.037
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 1
+cpu cores       : 4
+apicid          : 2
+initial apicid  : 2
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 2
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 800.010
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 2
+cpu cores       : 4
+apicid          : 4
+initial apicid  : 4
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 3
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 800.028
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 3
+cpu cores       : 4
+apicid          : 6
+initial apicid  : 6
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 4
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 799.989
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 0
+cpu cores       : 4
+apicid          : 1
+initial apicid  : 1
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 5
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 800.083
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 1
+cpu cores       : 4
+apicid          : 3
+initial apicid  : 3
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 6
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 800.017
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 2
+cpu cores       : 4
+apicid          : 5
+initial apicid  : 5
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
+processor       : 7
+vendor_id       : GenuineIntel
+cpu family      : 6
+model           : 142
+model name      : Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz
+stepping        : 10
+microcode       : 0xb4
+cpu MHz         : 800.030
+cache size      : 8192 KB
+physical id     : 0
+siblings        : 8
+core id         : 3
+cpu cores       : 4
+apicid          : 7
+initial apicid  : 7
+fpu             : yes
+fpu_exception   : yes
+cpuid level     : 22
+wp              : yes
+flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
+bugs            : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
+bogomips        : 4224.00
+clflush size    : 64
+cache_alignment : 64
+address sizes   : 39 bits physical, 48 bits virtual
+power management:
+
diff --git a/end-to-end-test.sh b/end-to-end-test.sh
index 469b811..7372940 100755
--- a/end-to-end-test.sh
+++ b/end-to-end-test.sh
@@ -103,6 +103,7 @@ fi
   --collector.wifi.fixtures="collector/fixtures/wifi" \
   --collector.qdisc.fixtures="collector/fixtures/qdisc/" \
   --collector.netclass.ignored-devices="(bond0|dmz|int)" \
+  --collector.cpu.info \
   --web.listen-address "127.0.0.1:${port}" \
   --log.level="debug" > "${tmpdir}/node_exporter.log" 2>&1 &