mtr-exporter periodically executes mtr to a given host and provides the measured results as prometheus metrics.
Usually, mtr is producing the following output:
HOST: src.example.com Loss% Snt Last Avg Best Wrst StDev
1.|-- 127.0.0.1 0.0% 2 0.6 0.6 0.6 0.7 0.1
2.|-- 127.0.0.2 0.0% 2 6.1 10.2 6.1 14.3 5.8
3.|-- 127.0.0.3 0.0% 2 13.0 12.3 11.6 13.0 1.0
4.|-- 127.0.0.4 0.0% 2 7.0 9.1 7.0 11.1 2.9
5.|-- 127.0.0.5 0.0% 2 12.5 16.5 12.5 20.6 5.7
6.|-- 127.0.0.6 0.0% 2 19.1 18.5 17.9 19.1 0.9
7.|-- 127.0.0.7 0.0% 2 18.3 18.2 18.0 18.3 0.2
8.|-- 127.0.0.8 0.0% 2 89.9 61.6 33.3 89.9 40.0
9.|-- 127.0.0.9 0.0% 2 18.5 18.3 18.1 18.5 0.2
10.|-- 127.0.0.10 0.0% 2 20.4 19.8 19.2 20.4 0.8
mtr-exporter exposes the measured values like this:
# mtr run: 2020-03-08T16:37:05.000377Z
# cmdline: /usr/local/sbin/mtr -j -c 2 -n example.com
mtr_report_duration_ms_gauge{bitpattern="0x00",dst="example.com",psize="64",src="src.example.com",tests="2",tos="0x0"} 7179 1583685425000
mtr_report_count_hubs_gauge{bitpattern="0x00",dst="example.com",psize="64",src="src.example.com",tests="2",tos="0x0"} 10 1583685425000
mtr_report_loss_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 0.000000 1583685425000
mtr_report_snt_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 2 1583685425000
mtr_report_last_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 0.380000 1583685425000
mtr_report_avg_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 0.480000 1583685425000
mtr_report_best_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 0.380000 1583685425000
mtr_report_wrst_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 0.570000 1583685425000
mtr_report_stdev_gauge{bitpattern="0x00",hop="first",count="1",dst="example.com",host="127.0.0.1",psize="64",src="src.example.com",tests="2",tos="0x0"} 0.130000 1583685425000
Each hop gets a label "hop"="first", "hop"="last", "hop"="first_last" or
"hop"="intermediate", depending where on the path to the destination the hop
is.
Legacy: the last hop in the list of tested hosts contains the label "last"="true".
Use hop=~".*last" in your Prometheus queries to achieve the same.
When prometheus scrapes the data, you can visualise the observed values:
$> mtr-exporter [FLAGS] -- [MTR-FLAGS]
FLAGS:
-bind <bind-address>
bind address (default ":8080")
-flag.deprecatedMetrics
render deprecated metrics (default: false)
helps with transition time until deprecated metrics are gone
-h
show help
-jobs <path-to-jobsfile>
file describing multiple mtr-jobs. syntax is given below.
-label <job-label>
use <job-label> in prometheus-metrics (default: "mtr-exporter-cli")
-mtr <path-to-binary>
path to mtr binary (default: "mtr")
-schedule <schedule>
schedule at which often mtr is launched (default: "@every 60s")
examples:
@every <dur> - example "@every 60s"
@hourly - run once per hour
10 * * * * - execute 10 minutes after the full hour
see https://en.wikipedia.org/wiki/Cron
-tslogs
use timestamps in logs
-watch-jobs <schedule>
periodically watch the file defined via -jobs (default: "")
if it has changed stop previously running mtr-jobs and apply
all jobs defined in -jobs.
-version
show version
MTR-FLAGS:
see "man mtr" for valid flags to mtr.
At /metrics the measured values of the last run are exposed.
$> mtr-exporter -- example.com
# probe every minute "example.com"
$> mtr-exporter -- -n example.com
# probe every minute "example.com", do not resolve DNS
$> mtr-exporter -schedule "@every 30s" -- -G 1 -m 3 -I ven3 -n example.com
# probe every 30s "example.com", wait 1s for response, try a max of 3 hops,
# use interface "ven3", do not resolve DNS.
# comment lines start with '#' are ignored
# empty lines are ignored as well
label -- <schedule> -- mtr-flags
Example:
quad9 -- @every 120s -- -I ven1 -n 9.9.9.9
example.com -- @every 45s -- -I ven2 -n example.com
Runtime:
- mtr-0.89 and newer (added --json support)
Build:
- golang-1.21 and newer
$> git clone https://github.com/mgumz/mtr-exporter
$> cd mtr-exporter
$> make
One-off building and "installation":
$> go install github.com/mgumz/mtr-exporter/cmd/mtr-exporter@latest
see LICENSE file
- Mathias Gumz mg@2hoch5.com