Adding upstream version 1.34.4.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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4963 changed files with 677545 additions and 0 deletions
288
plugins/inputs/lvm/lvm.go
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288
plugins/inputs/lvm/lvm.go
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//go:generate ../../../tools/readme_config_includer/generator
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package lvm
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import (
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_ "embed"
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"encoding/json"
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"fmt"
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"os/exec"
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"strconv"
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"strings"
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"time"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/internal"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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//go:embed sample.conf
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var sampleConfig string
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var (
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execCommand = exec.Command
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)
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type LVM struct {
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UseSudo bool `toml:"use_sudo"`
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PVSBinary string `toml:"pvs_binary"`
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VGSBinary string `toml:"vgs_binary"`
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LVSBinary string `toml:"lvs_binary"`
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}
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func (*LVM) SampleConfig() string {
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return sampleConfig
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}
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func (lvm *LVM) Gather(acc telegraf.Accumulator) error {
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if err := lvm.gatherPhysicalVolumes(acc); err != nil {
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return err
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} else if err := lvm.gatherVolumeGroups(acc); err != nil {
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return err
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} else if err := lvm.gatherLogicalVolumes(acc); err != nil {
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return err
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}
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return nil
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}
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func (lvm *LVM) gatherPhysicalVolumes(acc telegraf.Accumulator) error {
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args := []string{
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"--reportformat", "json", "--units", "b", "--nosuffix",
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"-o", "pv_name,vg_name,pv_size,pv_free,pv_used",
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}
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out, err := lvm.runCmd(lvm.PVSBinary, args)
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if err != nil {
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return err
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}
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var report pvsReport
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err = json.Unmarshal(out, &report)
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if err != nil {
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return fmt.Errorf("failed to unmarshal physical volume JSON: %w", err)
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}
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if len(report.Report) > 0 {
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for _, pv := range report.Report[0].Pv {
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tags := map[string]string{
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"path": pv.Name,
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"vol_group": pv.VolGroup,
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}
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size, err := strconv.ParseUint(pv.Size, 10, 64)
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if err != nil {
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return err
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}
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free, err := strconv.ParseUint(pv.Free, 10, 64)
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if err != nil {
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return err
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}
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used, err := strconv.ParseUint(pv.Used, 10, 64)
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if err != nil {
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return err
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}
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usedPercent := float64(used) / float64(size) * 100
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fields := map[string]interface{}{
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"size": size,
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"free": free,
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"used": used,
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"used_percent": usedPercent,
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}
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acc.AddFields("lvm_physical_vol", fields, tags)
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}
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}
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return nil
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}
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func (lvm *LVM) gatherVolumeGroups(acc telegraf.Accumulator) error {
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args := []string{
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"--reportformat", "json", "--units", "b", "--nosuffix",
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"-o", "vg_name,pv_count,lv_count,snap_count,vg_size,vg_free",
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}
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out, err := lvm.runCmd(lvm.VGSBinary, args)
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if err != nil {
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return err
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}
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var report vgsReport
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err = json.Unmarshal(out, &report)
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if err != nil {
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return fmt.Errorf("failed to unmarshal vol group JSON: %w", err)
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}
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if len(report.Report) > 0 {
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for _, vg := range report.Report[0].Vg {
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tags := map[string]string{
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"name": vg.Name,
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}
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size, err := strconv.ParseUint(vg.Size, 10, 64)
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if err != nil {
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return err
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}
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free, err := strconv.ParseUint(vg.Free, 10, 64)
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if err != nil {
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return err
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}
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pvCount, err := strconv.ParseUint(vg.PvCount, 10, 64)
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if err != nil {
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return err
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}
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lvCount, err := strconv.ParseUint(vg.LvCount, 10, 64)
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if err != nil {
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return err
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}
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snapCount, err := strconv.ParseUint(vg.SnapCount, 10, 64)
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if err != nil {
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return err
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}
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usedPercent := (float64(size) - float64(free)) / float64(size) * 100
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fields := map[string]interface{}{
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"size": size,
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"free": free,
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"used_percent": usedPercent,
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"physical_volume_count": pvCount,
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"logical_volume_count": lvCount,
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"snapshot_count": snapCount,
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}
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acc.AddFields("lvm_vol_group", fields, tags)
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}
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}
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return nil
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}
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func (lvm *LVM) gatherLogicalVolumes(acc telegraf.Accumulator) error {
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args := []string{
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"--reportformat", "json", "--units", "b", "--nosuffix",
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"-o", "lv_name,vg_name,lv_size,data_percent,metadata_percent",
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}
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out, err := lvm.runCmd(lvm.LVSBinary, args)
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if err != nil {
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return err
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}
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var report lvsReport
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err = json.Unmarshal(out, &report)
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if err != nil {
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return fmt.Errorf("failed to unmarshal logical vol JSON: %w", err)
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}
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if len(report.Report) > 0 {
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for _, lv := range report.Report[0].Lv {
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tags := map[string]string{
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"name": lv.Name,
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"vol_group": lv.VolGroup,
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}
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size, err := strconv.ParseUint(lv.Size, 10, 64)
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if err != nil {
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return err
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}
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// Does not apply to all logical volumes, set default value
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if lv.DataPercent == "" {
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lv.DataPercent = "0.0"
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}
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dataPercent, err := strconv.ParseFloat(lv.DataPercent, 32)
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if err != nil {
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return err
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}
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// Does not apply to all logical volumes, set default value
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if lv.MetadataPercent == "" {
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lv.MetadataPercent = "0.0"
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}
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metadataPercent, err := strconv.ParseFloat(lv.MetadataPercent, 32)
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if err != nil {
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return err
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}
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fields := map[string]interface{}{
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"size": size,
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"data_percent": dataPercent,
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"metadata_percent": metadataPercent,
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}
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acc.AddFields("lvm_logical_vol", fields, tags)
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}
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}
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return nil
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}
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func (lvm *LVM) runCmd(cmd string, args []string) ([]byte, error) {
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execCmd := execCommand(cmd, args...)
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if lvm.UseSudo {
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execCmd = execCommand("sudo", append([]string{"-n", cmd}, args...)...)
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}
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out, err := internal.StdOutputTimeout(execCmd, 5*time.Second)
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if err != nil {
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return nil, fmt.Errorf(
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"failed to run command %s: %w - %s", strings.Join(execCmd.Args, " "), err, string(out),
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)
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}
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return out, nil
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}
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// Represents info about physical volume command, pvs, output
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type pvsReport struct {
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Report []struct {
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Pv []struct {
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Name string `json:"pv_name"`
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VolGroup string `json:"vg_name"`
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Size string `json:"pv_size"`
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Free string `json:"pv_free"`
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Used string `json:"pv_used"`
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} `json:"pv"`
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} `json:"report"`
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}
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// Represents info about volume group command, vgs, output
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type vgsReport struct {
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Report []struct {
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Vg []struct {
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Name string `json:"vg_name"`
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Size string `json:"vg_size"`
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Free string `json:"vg_free"`
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LvCount string `json:"lv_count"`
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PvCount string `json:"pv_count"`
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SnapCount string `json:"snap_count"`
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} `json:"vg"`
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} `json:"report"`
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}
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// Represents info about logical volume command, lvs, output
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type lvsReport struct {
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Report []struct {
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Lv []struct {
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Name string `json:"lv_name"`
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VolGroup string `json:"vg_name"`
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Size string `json:"lv_size"`
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DataPercent string `json:"data_percent"`
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MetadataPercent string `json:"metadata_percent"`
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} `json:"lv"`
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} `json:"report"`
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}
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func init() {
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inputs.Add("lvm", func() telegraf.Input {
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return &LVM{
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PVSBinary: "/usr/sbin/pvs",
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VGSBinary: "/usr/sbin/vgs",
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LVSBinary: "/usr/sbin/lvs",
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}
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})
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}
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