mirror of
https://github.com/drewkerrigan/nagios-http-json.git
synced 2024-11-22 02:13:47 +01:00
270 lines
10 KiB
Markdown
270 lines
10 KiB
Markdown
|
|
|
|
# Nagios Json Plugin
|
|
|
|
This is a generic plugin for Nagios which checks json values from a given HTTP endpoint against argument specified rules and determines the status and performance data for that service.
|
|
|
|
## Links
|
|
|
|
* [CLI Usage](#cli-usage)
|
|
* [Examples](#examples)
|
|
* [Riak Stats](docs/RIAK.md)
|
|
* [Docker](docs/DOCKER.md)
|
|
* [Nagios Installation](#nagios-installation)
|
|
|
|
## CLI Usage
|
|
|
|
Executing `./check_http_json.py -h` will yield the following details:
|
|
|
|
```
|
|
usage: check_http_json.py [-h] [-d] [-s] -H HOST [-k] [-V] [--cacert CACERT]
|
|
[--cert CERT] [--key KEY] [-P PORT] [-p PATH]
|
|
[-t TIMEOUT] [-B AUTH] [-D DATA] [-A HEADERS]
|
|
[-f FIELD_SEPARATOR] [-F VALUE_SEPARATOR]
|
|
[-w [KEY_THRESHOLD_WARNING [KEY_THRESHOLD_WARNING ...]]]
|
|
[-c [KEY_THRESHOLD_CRITICAL [KEY_THRESHOLD_CRITICAL ...]]]
|
|
[-e [KEY_LIST [KEY_LIST ...]]]
|
|
[-E [KEY_LIST_CRITICAL [KEY_LIST_CRITICAL ...]]]
|
|
[-q [KEY_VALUE_LIST [KEY_VALUE_LIST ...]]]
|
|
[-Q [KEY_VALUE_LIST_CRITICAL [KEY_VALUE_LIST_CRITICAL ...]]]
|
|
[-u [KEY_VALUE_LIST_UNKNOWN [KEY_VALUE_LIST_UNKNOWN ...]]]
|
|
[-y [KEY_VALUE_LIST_NOT [KEY_VALUE_LIST_NOT ...]]]
|
|
[-Y [KEY_VALUE_LIST_NOT_CRITICAL [KEY_VALUE_LIST_NOT_CRITICAL ...]]]
|
|
[-m [METRIC_LIST [METRIC_LIST ...]]]
|
|
|
|
Check HTTP JSON Nagios Plugin
|
|
|
|
Generic Nagios plugin which checks json values from a given endpoint against
|
|
argument specified rules and determines the status and performance data for
|
|
that service.
|
|
|
|
Version: 2.1.2 (2022-09-15)
|
|
|
|
optional arguments:
|
|
-h, --help show this help message and exit
|
|
-d, --debug debug mode
|
|
-s, --ssl use TLS to connect to remote host
|
|
-H HOST, --host HOST remote host to query
|
|
-k, --insecure do not check server SSL certificate
|
|
-X {GET,POST}, --request {GET,POST}
|
|
Specifies a custom request method to use when communicating with the HTTP server
|
|
-V, --version print version of this plugin
|
|
--cacert CACERT SSL CA certificate
|
|
--cert CERT SSL client certificate
|
|
--key KEY SSL client key ( if not bundled into the cert )
|
|
-P PORT, --port PORT TCP port
|
|
-p PATH, --path PATH Path
|
|
-t TIMEOUT, --timeout TIMEOUT
|
|
Connection timeout (seconds)
|
|
-B AUTH, --basic-auth AUTH
|
|
Basic auth string "username:password"
|
|
-D DATA, --data DATA The http payload to send as a POST
|
|
-A HEADERS, --headers HEADERS
|
|
The http headers in JSON format.
|
|
-f SEPARATOR, --field_separator SEPARATOR
|
|
JSON Field separator, defaults to "."; Select element
|
|
in an array with "(" ")"
|
|
-F SEPARATOR, --value_separator SEPARATOR
|
|
JSON Value separator, defaults to ":";
|
|
-w [KEY_THRESHOLD_WARNING [KEY_THRESHOLD_WARNING ...]], --warning [KEY_THRESHOLD_WARNING [KEY_THRESHOLD_WARNING ...]]
|
|
Warning threshold for these values
|
|
(key1[>alias],WarnRange key2[>alias],WarnRange).
|
|
WarnRange is in the format [@]start:end, more
|
|
information at nagios-plugins.org/doc/guidelines.html.
|
|
-c [KEY_THRESHOLD_CRITICAL [KEY_THRESHOLD_CRITICAL ...]], --critical [KEY_THRESHOLD_CRITICAL [KEY_THRESHOLD_CRITICAL ...]]
|
|
Critical threshold for these values
|
|
(key1[>alias],CriticalRange
|
|
key2[>alias],CriticalRange. CriticalRange is in the
|
|
format [@]start:end, more information at nagios-
|
|
plugins.org/doc/guidelines.html.
|
|
-e [KEY_LIST [KEY_LIST ...]], --key_exists [KEY_LIST [KEY_LIST ...]]
|
|
Checks existence of these keys to determine status.
|
|
Return warning if key is not present.
|
|
-E [KEY_LIST_CRITICAL [KEY_LIST_CRITICAL ...]], --key_exists_critical [KEY_LIST_CRITICAL [KEY_LIST_CRITICAL ...]]
|
|
Same as -e but return critical if key is not present.
|
|
-q [KEY_VALUE_LIST [KEY_VALUE_LIST ...]], --key_equals [KEY_VALUE_LIST [KEY_VALUE_LIST ...]]
|
|
Checks equality of these keys and values
|
|
(key[>alias],value key2,value2) to determine status.
|
|
Multiple key values can be delimited with colon
|
|
(key,value1:value2). Return warning if equality check
|
|
fails
|
|
-Q [KEY_VALUE_LIST_CRITICAL [KEY_VALUE_LIST_CRITICAL ...]], --key_equals_critical [KEY_VALUE_LIST_CRITICAL [KEY_VALUE_LIST_CRITICAL ...]]
|
|
Same as -q but return critical if equality check
|
|
fails.
|
|
-u [KEY_VALUE_LIST_UNKNOWN [KEY_VALUE_LIST_UNKNOWN ...]], --key_equals_unknown [KEY_VALUE_LIST_UNKNOWN [KEY_VALUE_LIST_UNKNOWN ...]]
|
|
Same as -q but return unknown if equality check fails.
|
|
-y [KEY_VALUE_LIST_NOT [KEY_VALUE_LIST_NOT ...]], --key_not_equals [KEY_VALUE_LIST_NOT [KEY_VALUE_LIST_NOT ...]]
|
|
Checks equality of these keys and values
|
|
(key[>alias],value key2,value2) to determine status.
|
|
Multiple key values can be delimited with colon
|
|
(key,value1:value2). Return warning if equality check
|
|
succeeds
|
|
-Y [KEY_VALUE_LIST_NOT_CRITICAL [KEY_VALUE_LIST_NOT_CRITICAL ...]], --key_not_equals_critical [KEY_VALUE_LIST_NOT_CRITICAL [KEY_VALUE_LIST_NOT_CRITICAL ...]]
|
|
Same as -q but return critical if equality check
|
|
succeeds.
|
|
-m [METRIC_LIST [METRIC_LIST ...]], --key_metric [METRIC_LIST [METRIC_LIST ...]]
|
|
Gathers the values of these keys (key[>alias],
|
|
UnitOfMeasure,WarnRange,CriticalRange,Min,Max) for
|
|
Nagios performance data. More information about Range
|
|
format and units of measure for nagios can be found at
|
|
nagios-plugins.org/doc/guidelines.html Additional
|
|
formats for this parameter are: (key[>alias]),
|
|
(key[>alias],UnitOfMeasure),
|
|
(key[>alias],UnitOfMeasure,WarnRange, CriticalRange).
|
|
```
|
|
|
|
## Examples
|
|
|
|
### Key Naming
|
|
|
|
**Data for key** `value`:
|
|
|
|
{ "value": 1000 }
|
|
|
|
**Data for key** `capacity.value`:
|
|
|
|
{
|
|
"capacity": {
|
|
"value": 1000
|
|
}
|
|
}
|
|
|
|
**Data for key** `(0).capacity.value`:
|
|
|
|
[
|
|
{
|
|
"capacity": {
|
|
"value": 1000
|
|
}
|
|
}
|
|
]
|
|
|
|
**Data for keys of all items in a list** `(*).capacity.value`:
|
|
|
|
[
|
|
{
|
|
"capacity": {
|
|
"value": 1000
|
|
}
|
|
},
|
|
{
|
|
"capacity": {
|
|
"value": 2200
|
|
}
|
|
}
|
|
]
|
|
|
|
**Data for separator** `-f _` **and key** `(0)_gauges_jvm.buffers.direct.capacity_value`:
|
|
|
|
[
|
|
{
|
|
"gauges": {
|
|
"jvm.buffers.direct.capacity":
|
|
"value": 1000
|
|
}
|
|
}
|
|
}
|
|
]
|
|
|
|
**Data for keys** `ring_members(0)`, `ring_members(1)`, `ring_members(2)`:
|
|
|
|
{
|
|
"ring_members": [
|
|
"riak1@127.0.0.1",
|
|
"riak2@127.0.0.1",
|
|
"riak3@127.0.0.1"
|
|
]
|
|
}
|
|
|
|
### Thresholds and Ranges
|
|
|
|
**Data**:
|
|
|
|
{ "metric": 1000 }
|
|
|
|
#### Relevant Commands
|
|
|
|
* **Warning:** `./check_http_json.py -H <host>:<port> -p <path> -w "metric,RANGE"`
|
|
* **Critical:** `./check_http_json.py -H <host>:<port> -p <path> -c "metric,RANGE"`
|
|
* **Metrics with Warning:** `./check_http_json.py -H <host>:<port> -p <path> -w "metric,RANGE"`
|
|
* **Metrics with Critical:**
|
|
|
|
./check_http_json.py -H <host>:<port> -p <path> -w "metric,,,RANGE"
|
|
./check_http_json.py -H <host>:<port> -p <path> -w "metric,,,,MIN,MAX"
|
|
|
|
#### Range Definitions
|
|
|
|
* **Format:** [@]START:END
|
|
* **Generates a Warning or Critical if...**
|
|
* **Value is less than 0 or greater than 1000:** `1000` or `0:1000`
|
|
* **Value is greater than or equal to 1000, or less than or equal to 0:** `@1000` or `@0:1000`
|
|
* **Value is less than 1000:** `1000:`
|
|
* **Value is greater than 1000:** `~:1000`
|
|
* **Value is greater than or equal to 1000:** `@1000:`
|
|
|
|
More info about Nagios Range format and Units of Measure can be found at [https://nagios-plugins.org/doc/guidelines.html](https://nagios-plugins.org/doc/guidelines.html).
|
|
|
|
#### Using Headers
|
|
|
|
* `./check_http_json.py -H <host>:<port> -p <path> -A '{"content-type": "application/json"}' -w "metric,RANGE"`
|
|
|
|
## Nagios Installation
|
|
|
|
### Requirements
|
|
|
|
* Python 3.6+
|
|
|
|
### Configuration
|
|
|
|
Assuming a standard installation of Nagios, the plugin can be executed from the machine that Nagios is running on.
|
|
|
|
```bash
|
|
cp check_http_json.py /usr/local/nagios/libexec/plugins/check_http_json.py
|
|
chmod +x /usr/local/nagios/libexec/plugins/check_http_json.py
|
|
```
|
|
|
|
Add the following service definition to your server config (`localhost.cfg`):
|
|
|
|
```
|
|
|
|
define service {
|
|
use local-service
|
|
host_name localhost
|
|
service_description <command_description>
|
|
check_command <command_name>
|
|
}
|
|
|
|
```
|
|
|
|
Add the following command definition to your commands config (`commands.config`):
|
|
|
|
```
|
|
|
|
define command{
|
|
command_name <command_name>
|
|
command_line /usr/bin/python /usr/local/nagios/libexec/plugins/check_http_json.py -H <host>:<port> -p <path> [-e|-q|-w|-c <rules>] [-m <metrics>]
|
|
}
|
|
|
|
```
|
|
|
|
## Icinga2 configuration
|
|
|
|
The Icinga2 command definition can be found here: (contrib/icinga2_check_command_definition.conf)
|
|
|
|
|
|
## License
|
|
|
|
Copyright 2014-2015 Drew Kerrigan.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "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.
|