Add bond input plugin (#3424)
This commit is contained in:
Ildar Svetlov
Daniel Nelson
parent
d1ba75176d
commit
132fb50150
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@ -5,6 +5,7 @@ import (
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_ "github.com/influxdata/telegraf/plugins/inputs/amqp_consumer"
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_ "github.com/influxdata/telegraf/plugins/inputs/apache"
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_ "github.com/influxdata/telegraf/plugins/inputs/bcache"
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_ "github.com/influxdata/telegraf/plugins/inputs/bond"
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_ "github.com/influxdata/telegraf/plugins/inputs/cassandra"
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_ "github.com/influxdata/telegraf/plugins/inputs/ceph"
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_ "github.com/influxdata/telegraf/plugins/inputs/cgroup"
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@ -0,0 +1,85 @@
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# Bond Input Plugin
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The Bond Input plugin collects bond interface status, bond's slaves interfaces
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status and failures count of bond's slaves interfaces.
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The plugin collects these metrics from `/proc/net/bonding/*` files.
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### Configuration:
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```toml
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[[inputs.bond]]
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## Sets 'proc' directory path
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## If not specified, then default is /proc
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# host_proc = "/proc"
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## By default, telegraf gather stats for all bond interfaces
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## Setting interfaces will restrict the stats to the specified
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## bond interfaces.
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# bond_interfaces = ["bond0"]
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```
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### Measurements & Fields:
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- bond
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- active_slave (for active-backup mode)
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- status
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- bond_slave
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- failures
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- status
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### Description:
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```
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active_slave
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Currently active slave interface for active-backup mode.
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status
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Status of bond interface or bonds's slave interface (down = 0, up = 1).
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failures
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Amount of failures for bond's slave interface.
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```
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### Tags:
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- bond
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- bond
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- bond_slave
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- bond
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- interface
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### Example output:
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Configuration:
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```
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[[inputs.bond]]
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## Sets 'proc' directory path
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## If not specified, then default is /proc
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host_proc = "/proc"
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## By default, telegraf gather stats for all bond interfaces
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## Setting interfaces will restrict the stats to the specified
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## bond interfaces.
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bond_interfaces = ["bond0", "bond1"]
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```
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Run:
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```
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telegraf --config telegraf.conf --input-filter bond --test
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```
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Output:
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```
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* Plugin: inputs.bond, Collection 1
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> bond,bond=bond1,host=local active_slave="eth0",status=1i 1509704525000000000
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> bond_slave,bond=bond1,interface=eth0,host=local status=1i,failures=0i 1509704525000000000
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> bond_slave,host=local,bond=bond1,interface=eth1 status=1i,failures=0i 1509704525000000000
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> bond,bond=bond0,host=isvetlov-mac.local status=1i 1509704525000000000
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> bond_slave,bond=bond0,interface=eth1,host=local status=1i,failures=0i 1509704525000000000
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> bond_slave,bond=bond0,interface=eth2,host=local status=1i,failures=0i 1509704525000000000
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```
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@ -0,0 +1,204 @@
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package bond
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import (
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"bufio"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/influxdata/telegraf"
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"github.com/influxdata/telegraf/plugins/inputs"
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)
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// default host proc path
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const defaultHostProc = "/proc"
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// env host proc variable name
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const envProc = "HOST_PROC"
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type Bond struct {
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HostProc string `toml:"host_proc"`
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BondInterfaces []string `toml:"bond_interfaces"`
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}
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var sampleConfig = `
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## Sets 'proc' directory path
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## If not specified, then default is /proc
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# host_proc = "/proc"
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## By default, telegraf gather stats for all bond interfaces
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## Setting interfaces will restrict the stats to the specified
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## bond interfaces.
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# bond_interfaces = ["bond0"]
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`
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func (bond *Bond) Description() string {
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return "Collect bond interface status, slaves statuses and failures count"
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}
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func (bond *Bond) SampleConfig() string {
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return sampleConfig
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}
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func (bond *Bond) Gather(acc telegraf.Accumulator) error {
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// load proc path, get default value if config value and env variable are empty
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bond.loadPath()
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// list bond interfaces from bonding directory or gather all interfaces.
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bondNames, err := bond.listInterfaces()
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if err != nil {
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return err
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}
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for _, bondName := range bondNames {
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bondAbsPath := bond.HostProc + "/net/bonding/" + bondName
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file, err := ioutil.ReadFile(bondAbsPath)
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if err != nil {
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acc.AddError(fmt.Errorf("error inspecting '%s' interface: %v", bondAbsPath, err))
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continue
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}
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rawFile := strings.TrimSpace(string(file))
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err = bond.gatherBondInterface(bondName, rawFile, acc)
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if err != nil {
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acc.AddError(fmt.Errorf("error inspecting '%s' interface: %v", bondName, err))
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}
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}
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return nil
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}
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func (bond *Bond) gatherBondInterface(bondName string, rawFile string, acc telegraf.Accumulator) error {
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splitIndex := strings.Index(rawFile, "Slave Interface:")
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if splitIndex == -1 {
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splitIndex = len(rawFile)
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}
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bondPart := rawFile[:splitIndex]
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slavePart := rawFile[splitIndex:]
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err := bond.gatherBondPart(bondName, bondPart, acc)
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if err != nil {
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return err
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}
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err = bond.gatherSlavePart(bondName, slavePart, acc)
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if 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 (bond *Bond) gatherBondPart(bondName string, rawFile string, acc telegraf.Accumulator) error {
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fields := make(map[string]interface{})
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tags := map[string]string{
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"bond": bondName,
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}
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scanner := bufio.NewScanner(strings.NewReader(rawFile))
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for scanner.Scan() {
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line := scanner.Text()
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stats := strings.Split(line, ":")
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if len(stats) < 2 {
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continue
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}
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name := strings.TrimSpace(stats[0])
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value := strings.TrimSpace(stats[1])
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if strings.Contains(name, "Currently Active Slave") {
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fields["active_slave"] = value
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}
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if strings.Contains(name, "MII Status") {
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fields["status"] = 0
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if value == "up" {
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fields["status"] = 1
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}
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acc.AddFields("bond", fields, tags)
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return nil
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}
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}
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if err := scanner.Err(); err != nil {
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return err
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}
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return fmt.Errorf("Couldn't find status info for '%s' ", bondName)
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}
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func (bond *Bond) gatherSlavePart(bondName string, rawFile string, acc telegraf.Accumulator) error {
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var slave string
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var status int
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scanner := bufio.NewScanner(strings.NewReader(rawFile))
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for scanner.Scan() {
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line := scanner.Text()
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stats := strings.Split(line, ":")
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if len(stats) < 2 {
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continue
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}
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name := strings.TrimSpace(stats[0])
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value := strings.TrimSpace(stats[1])
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if strings.Contains(name, "Slave Interface") {
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slave = value
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}
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if strings.Contains(name, "MII Status") {
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status = 0
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if value == "up" {
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status = 1
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}
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}
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if strings.Contains(name, "Link Failure Count") {
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count, err := strconv.Atoi(value)
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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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"status": status,
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"failures": count,
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}
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tags := map[string]string{
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"bond": bondName,
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"interface": slave,
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}
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acc.AddFields("bond_slave", fields, tags)
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}
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}
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if err := scanner.Err(); 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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// loadPath can be used to read path firstly from config
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// if it is empty then try read from env variable
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func (bond *Bond) loadPath() {
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if bond.HostProc == "" {
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bond.HostProc = proc(envProc, defaultHostProc)
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}
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}
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// proc can be used to read file paths from env
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func proc(env, path string) string {
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// try to read full file path
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if p := os.Getenv(env); p != "" {
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return p
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}
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// return default path
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return path
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}
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func (bond *Bond) listInterfaces() ([]string, error) {
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var interfaces []string
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if len(bond.BondInterfaces) > 0 {
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interfaces = bond.BondInterfaces
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} else {
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paths, err := filepath.Glob(bond.HostProc + "/net/bonding/*")
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if err != nil {
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return nil, err
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}
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for _, p := range paths {
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interfaces = append(interfaces, filepath.Base(p))
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}
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}
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return interfaces, nil
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}
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func init() {
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inputs.Add("bond", func() telegraf.Input {
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return &Bond{}
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})
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}
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@ -0,0 +1,77 @@
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package bond
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import (
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"testing"
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"github.com/influxdata/telegraf/testutil"
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)
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var sampleTest802 = `
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Ethernet Channel Bonding Driver: v3.5.0 (November 4, 2008)
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Bonding Mode: IEEE 802.3ad Dynamic link aggregation
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Transmit Hash Policy: layer2 (0)
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MII Status: up
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MII Polling Interval (ms): 100
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Up Delay (ms): 0
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Down Delay (ms): 0
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802.3ad info
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LACP rate: fast
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Aggregator selection policy (ad_select): stable
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bond bond0 has no active aggregator
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Slave Interface: eth1
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MII Status: up
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Link Failure Count: 0
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Permanent HW addr: 00:0c:29:f5:b7:11
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Aggregator ID: N/A
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Slave Interface: eth2
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MII Status: up
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Link Failure Count: 3
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Permanent HW addr: 00:0c:29:f5:b7:1b
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Aggregator ID: N/A
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`
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var sampleTestAB = `
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Ethernet Channel Bonding Driver: v3.6.0 (September 26, 2009)
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Bonding Mode: fault-tolerance (active-backup)
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Primary Slave: eth2 (primary_reselect always)
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Currently Active Slave: eth2
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MII Status: up
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MII Polling Interval (ms): 100
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Up Delay (ms): 0
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Down Delay (ms): 0
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Slave Interface: eth3
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MII Status: down
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Speed: 1000 Mbps
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Duplex: full
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Link Failure Count: 2
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Permanent HW addr:
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Slave queue ID: 0
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Slave Interface: eth2
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MII Status: up
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Speed: 100 Mbps
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Duplex: full
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Link Failure Count: 0
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Permanent HW addr:
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`
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func TestGatherBondInterface(t *testing.T) {
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var acc testutil.Accumulator
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bond := &Bond{}
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bond.gatherBondInterface("bond802", sampleTest802, &acc)
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acc.AssertContainsTaggedFields(t, "bond", map[string]interface{}{"status": 1}, map[string]string{"bond": "bond802"})
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acc.AssertContainsTaggedFields(t, "bond_slave", map[string]interface{}{"failures": 0, "status": 1}, map[string]string{"bond": "bond802", "interface": "eth1"})
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acc.AssertContainsTaggedFields(t, "bond_slave", map[string]interface{}{"failures": 3, "status": 1}, map[string]string{"bond": "bond802", "interface": "eth2"})
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bond.gatherBondInterface("bondAB", sampleTestAB, &acc)
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acc.AssertContainsTaggedFields(t, "bond", map[string]interface{}{"active_slave": "eth2", "status": 1}, map[string]string{"bond": "bondAB"})
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acc.AssertContainsTaggedFields(t, "bond_slave", map[string]interface{}{"failures": 2, "status": 0}, map[string]string{"bond": "bondAB", "interface": "eth3"})
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acc.AssertContainsTaggedFields(t, "bond_slave", map[string]interface{}{"failures": 0, "status": 1}, map[string]string{"bond": "bondAB", "interface": "eth2"})
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}
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