package system import ( "fmt" "strings" "github.com/influxdata/telegraf" "github.com/influxdata/telegraf/plugins/inputs" ) type DiskStats struct { ps PS // Legacy support Mountpoints []string MountPoints []string IgnoreFS []string `toml:"ignore_fs"` } func (_ *DiskStats) Description() string { return "Read metrics about disk usage by mount point" } var diskSampleConfig = ` ## By default stats will be gathered for all mount points. ## Set mount_points will restrict the stats to only the specified mount points. # mount_points = ["/"] ## Ignore mount points by filesystem type. ignore_fs = ["tmpfs", "devtmpfs", "devfs"] ` func (_ *DiskStats) SampleConfig() string { return diskSampleConfig } func (s *DiskStats) Gather(acc telegraf.Accumulator) error { // Legacy support: if len(s.Mountpoints) != 0 { s.MountPoints = s.Mountpoints } disks, partitions, err := s.ps.DiskUsage(s.MountPoints, s.IgnoreFS) if err != nil { return fmt.Errorf("error getting disk usage info: %s", err) } for i, du := range disks { if du.Total == 0 { // Skip dummy filesystem (procfs, cgroupfs, ...) continue } mountOpts := parseOptions(partitions[i].Opts) tags := map[string]string{ "path": du.Path, "device": strings.Replace(partitions[i].Device, "/dev/", "", -1), "fstype": du.Fstype, "mode": mountOpts.Mode(), } var used_percent float64 if du.Used+du.Free > 0 { used_percent = float64(du.Used) / (float64(du.Used) + float64(du.Free)) * 100 } fields := map[string]interface{}{ "total": du.Total, "free": du.Free, "used": du.Used, "used_percent": used_percent, "inodes_total": du.InodesTotal, "inodes_free": du.InodesFree, "inodes_used": du.InodesUsed, } acc.AddGauge("disk", fields, tags) } return nil } type MountOptions []string func (opts MountOptions) Mode() string { if opts.exists("rw") { return "rw" } else if opts.exists("ro") { return "ro" } else { return "unknown" } } func (opts MountOptions) exists(opt string) bool { for _, o := range opts { if o == opt { return true } } return false } func parseOptions(opts string) MountOptions { return strings.Split(opts, ",") } func init() { ps := newSystemPS() inputs.Add("disk", func() telegraf.Input { return &DiskStats{ps: ps} }) }