# Poll\_file with icmp
**URL:** https://discuss.elastic.co/t/poll-file-with-icmp/137719
**Category:** Beats
**Tags:** heartbeat
**Created:** [June 28, 2018, 2:42am UTC](https://discuss.elastic.co/t/poll-file-with-icmp/137719 "2018-06-28T02:42:53Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Anthony\_Chung](https://discuss.elastic.co/u/Anthony_Chung)
#### Post date: [June 28, 2018, 2:42am UTC](https://discuss.elastic.co/t/poll-file-with-icmp/137719/1 "2018-06-28T02:42:53Z")
Hi,
Just wondering if anyone have successfully used the watch.poll\_file option for icmp monitoring?
I tried following the sample from [here](https://www.elastic.co/guide/en/beats/heartbeat/5.6/configuration-heartbeat-options.html#monitor-watch-poll-file), but got the error: _Exiting: error loading config file: yaml: line 30: mapping values are not allowed in this context_
Line 30 was the "interval: 5s" line, so I removed it, which removed the error, but nothing seem to happen.
I tried using HTTP instead of ICMP, that worked no problems. Even in the logs, I can see:
_scheduler.go:294: INFO Scheduled job 'http@[http://google.com](http://google.com)' already active._
I'm using the Dockerized Heartbeat ([docker.elastic.co/beats/heartbeat](http://docker.elastic.co/beats/heartbeat)) version 6.3.0 and 5.6.4, with the same result.
My heartbeat.yml has:
```
- type: http
schedule: '@every 15s'
urls: ["http://google.com"]
watch.poll_file:
path: /etc/heartbeat/monitors/http_urls.json
- type: icmp
schedule: '@every 10s'
hosts: ["localhost"]
ipv6: false
mode: any
watch.poll_file:
path:/etc/heartbeat/monitors/icmp_hosts.json
```
http\_urls.json:
`{"urls": ["http://google.com"]} {"urls": ["http://youtube.com"]}`
icmp\_hosts.json:
`{"hosts": ["host01"]} {"hosts": ["host02"]}`
Where HTTP worked, and ICMP doesn't.
Any help is appreciated. Thanks.
---
### Author:  [@andrewkroh](https://discuss.elastic.co/u/andrewkroh)
#### Post date: [June 28, 2018, 8:18pm UTC](https://discuss.elastic.co/t/poll-file-with-icmp/137719/2 "2018-06-28T20:18:44Z")
I didn't have any issues using `watch.poll_file` on my end with Heartbeat v6.3.0.
```auto
$ cat heartbeat.dev.yml
heartbeat.monitors:
- type: icmp
schedule: '*/5 * * * * * *'
watch.poll_file:
path: icmp_hosts.json
output.console.pretty: true
```
```auto
$ cat icmp_hosts.json
{"hosts": ["www.google.com"]} {"hosts": ["www.yahoo.com"]}
```
```auto
$ sudo ./heartbeat -c heartbeat.dev.yml --strict.perms=false
{
"@timestamp": "2018-06-28T20:16:35.001Z",
"@metadata": {
"beat": "heartbeat",
"type": "doc",
"version": "6.3.0"
},
"host": {
"name": "mybox.com"
},
"icmp": {
"requests": 1,
"rtt": {
"us": 37718
}
},
"resolve": {
"host": "www.yahoo.com",
"ip": "98.138.219.231",
"rtt": {
"us": 32087
}
},
"monitor": {
"host": "www.yahoo.com",
"ip": "98.138.219.231",
"status": "up",
"duration": {
"us": 69933
},
"id": "icmp-icmp-host-ip@www.yahoo.com",
"type": "icmp",
"name": "icmp"
},
"type": "monitor",
"beat": {
"name": "mybox.com",
"hostname": "mybox.com",
"version": "6.3.0"
}
}
{
"@timestamp": "2018-06-28T20:16:35.001Z",
"@metadata": {
"beat": "heartbeat",
"type": "doc",
"version": "6.3.0"
},
"icmp": {
"requests": 1,
"rtt": {
"us": 84283
}
},
"monitor": {
"type": "icmp",
"host": "www.google.com",
"ip": "172.217.17.132",
"duration": {
"us": 123020
},
"status": "up",
"id": "icmp-icmp-host-ip@www.google.com",
"name": "icmp"
},
"resolve": {
"rtt": {
"us": 38618
},
"host": "www.google.com",
"ip": "172.217.17.132"
},
"type": "monitor",
"host": {
"name": "mybox.com"
},
"beat": {
"hostname": "mybox.com",
"version": "6.3.0",
"name": "mybox.com"
}
}
```
---
### Author:  [@Anthony\_Chung](https://discuss.elastic.co/u/Anthony_Chung)
#### Post date: [June 29, 2018, 7:39am UTC](https://discuss.elastic.co/t/poll-file-with-icmp/137719/3 "2018-06-29T07:39:25Z")
Thanks Andrew.
I've basically matched what you did 100%...
Still no good. I get something like:
```
2018-06-29T15:34:27.950+0800 WARN beater/heartbeat.go:24 Beta: Heartbeat is beta software
2018-06-29T15:34:27.950+0800 INFO beater/manager.go:110 Select (active) monitor icmp
2018-06-29T15:34:27.950+0800 ERROR beater/manager.go:140 failed to load monitor tasks: missing required field accessing 'hosts' when initializing monitor icmp(0)
2018-06-29T15:34:27.950+0800 INFO beater/manager.go:252 load watch object: map[hosts:[www.google.com]]
2018-06-29T15:34:27.951+0800 INFO beater/manager.go:252 load watch object: map[hosts:[www.yahoo.com]]
2018-06-29T15:34:27.951+0800 DEBUG [icmp] icmp/icmp.go:52 initialize icmp handler
2018-06-29T15:34:27.953+0800 INFO icmp/loop.go:330 IPv6 ICMP not supported: listen ip6:ipv6-icmp : socket: address family not supported by protocol
2018-06-29T15:34:27.953+0800 ERROR beater/manager.go:265 Failed applying configuration: failed to initiate IPv6 support when initializing monitor icmp(0)
2018-06-29T15:34:27.953+0800 INFO instance/beat.go:315 heartbeat start running.
2018-06-29T15:34:27.953+0800 INFO beater/heartbeat.go:56 heartbeat is running! Hit CTRL-C to stop it.
2018-06-29T15:34:27.953+0800 INFO [monitoring] log/log.go:97 Starting metrics logging every 30s
2018-06-29T15:34:27.953+0800 DEBUG [scheduler] scheduler/scheduler.go:151 Start scheduler.
2018-06-29T15:34:57.955+0800 INFO [monitoring] log/log.go:124 Non-zero metrics in the last 30s {"monitoring": {"metrics": {"beat":{"cpu":{"system":{"ticks":20,"time":{"ms":21}},"total":{"ticks":30,"time":{"ms":32},"value":30},"user":{"ticks":10,"time":{"ms":11}}},"info":{"ephemeral_id":"7221008c-39ad-4222-879e-e4799fed6772","uptime":{"ms":30016}},"memstats":{"gc_next":4194304,"memory_alloc":2207632,"memory_total":4163464,"rss":14635008}},"libbeat":{"config":{"module":{"running":0}},"output":{"type":"console"},"pipeline":{"clients":0,"events":{"active":0}}},"system":{"cpu":{"cores":8},"load":{"1":0.26,"15":0.4,"5":0.27,"norm":{"1":0.0325,"15":0.05,"5":0.0338}}}}}}
```
Good thing is at least it's loading the .json file properly, but doesn't seem to do anything with it.
Any other idea on how I can troubleshoot further?
Thanks.
---
### Author:  [@Anthony\_Chung](https://discuss.elastic.co/u/Anthony_Chung)
#### Post date: [June 29, 2018, 7:54am UTC](https://discuss.elastic.co/t/poll-file-with-icmp/137719/4 "2018-06-29T07:54:36Z")
Hi Andrew,
I just found the problem... I think it's to do with ipv6.
I updated the following into my config and it works now:
```
ipv4: true
ipv6: false
```
Silly me...
Thanks again for your help!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 27, 2018, 7:54am UTC](https://discuss.elastic.co/t/poll-file-with-icmp/137719/5 "2018-07-27T07:54:37Z")
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