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# httpcheck
Module monitors remote http server for availability and response time.
Following charts are drawn per job:
1. **Response time** ms
* Time in 0.1 ms resolution in which the server responds.
If the connection failed, the value is missing.
2. **Status** boolean
* Connection successful
* Unexpected content: No Regex match found in the response
* Unexpected status code: Do we get 500 errors?
* Connection failed: port not listening or blocked
* Connection timed out: host or port unreachable
### configuration
Sample configuration and their default values.
```yaml
server:
url: 'http://host:port/path' # required
status_accepted: # optional
- 200
timeout: 1 # optional, supports decimals (e.g. 0.2)
update_every: 3 # optional
regex: 'REGULAR_EXPRESSION' # optional, see https://docs.python.org/3/howto/regex.html
redirect: yes # optional
```
### notes
* The status chart is primarily intended for alarms, badges or for access via API.
* A system/service/firewall might block netdata's access if a portscan or
similar is detected.
* This plugin is meant for simple use cases. Currently, the accuracy of the
response time is low and should be used as reference only.
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