I have noticed that the the FreeBSD version of metricbeat has the uptime metricset of the system module disabled (or not enabled) in the Go build tags for the metricset. Consequently, when building metricbeat on FreeBSD, the uptime metricset is not enabled & will throw errors if configured in the metricbeat configuration.
2018-12-05T00:02:02.391Z ERROR instance/beat.go:824 Exiting: 1 error: 1 error: metricset 'system/uptime' is not registered, metricset not found
Here is the go file for the uptime metricset:
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// "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.
// +build darwin linux openbsd windows
package uptime
import (
"github.com/pkg/errors"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/metricbeat/mb"
"github.com/elastic/beats/metricbeat/mb/parse"
sigar "github.com/elastic/gosigar"
)
func init() {
mb.Registry.MustAddMetricSet("system", "uptime", New,
mb.WithHostParser(parse.EmptyHostParser),
mb.DefaultMetricSet(),
)
}
// MetricSet for fetching an OS uptime metric.
type MetricSet struct {
mb.BaseMetricSet
}
// New is a mb.MetricSetFactory that returns a new MetricSet.
func New(base mb.BaseMetricSet) (mb.MetricSet, error) {
return &MetricSet{base}, nil
}
// Fetch fetches the uptime metric from the OS.
func (m *MetricSet) Fetch() (common.MapStr, error) {
var uptime sigar.Uptime
if err := uptime.Get(); err != nil {
return nil, errors.Wrap(err, "failed to get uptime")
}
return common.MapStr{
"duration": common.MapStr{
"ms": int64(uptime.Length * 1000),
},
}, nil
}
is there any particular reason it's not enabled there? I see in gosigar's freebsd file sigar_freebsd.go that there is an uptime function using FreeBSD's clock_gettime sytem call:
func (self *Uptime) Get() error {
ts := C.struct_timespec{}
if _, err := C.clock_gettime(C.CLOCK_UPTIME, &ts); err != nil {
return err
}
self.Length = float64(ts.tv_sec) + 1e-9*float64(ts.tv_nsec)
return nil
}
I have enabled the build flag, built metricbeat on FreeBSD 11.2, run metricbeat, & get correct uptime events issued to logstash & stored in Elasticsearch.
{
"_index": "metricbeat-6.5.0-2018.49",
"_type": "doc",
"_id": "AoLie2cBVPJTERvK4Rmi",
"_version": 1,
"_score": null,
"_source": {
"host": {
"name": "freebsd-11-2"
},
"metricset": {
"module": "system",
"rtt": 39,
"name": "uptime"
},
"system": {
"uptime": {
"duration": {
"ms": 339442389
}
}
},
"@timestamp": "2018-12-05T01:02:04.564Z",
"tags": [
"beats_input_raw_event"
],
"beat": {
"hostname": "freebsd-11-2",
"version": "6.5.0",
"name": "freebsd-11-2"
},
"@version": "1"
},
"fields": {
"@timestamp": [
"2018-12-05T01:02:04.564Z"
]
},
"highlight": {
"metricset.name": [
"@kibana-highlighted-field@uptime@/kibana-highlighted-field@"
]
},
"sort": [
1543971724564
]
}
Is this an oversight, or is there a deeper reason it's not enabled for FreeBSD?
I'm glad it works! I will create a github issue to make it be enabled by default.