Zabbix json path example. "unsupported construct").

Zabbix json path example. JSONPath is composed of segments separated by dots. Example 1: Convert a number (scientific notation to integer) JSONPath consists of segments separated with dots. Jul 8, 2019 · Defining LLD in "LLD Macros" you can add exact json path to be mapped to {#USERID} and other macros. Is it anywhere complete documentation of the JSONPath syntax used by zabbix? Looks like it is different than that one used for example by jq. Over time Zabbix preprocessing evolved even further and extended the functionality in Zabbix 4. == or === for comparison. filters['no filters'] $. I believe it will work as is, except some of the JSON objects have brackets in the name such as &quot;Voltage(V)&quot; and I simply can't get past this as is due the following error: 1. Example session. When low-level discovery macros are used in JSONPath preprocessing and their values are resolved, the following rules of escaping special characters are applied: Aug 23, 2019 · Other thing is that looks like now zabbix 4. statusName" Every other JSON-Path validator I found online can use this path to get the desired array of values. 4 JSONPath functionality. Most web API’s today use some sort of JSON -formatted data structure to deliver data. Filter expression The output format follows the same rules as other JSONPath queries - definite path results are returned 'as is', and indefinite path results are returned in an array. NAME}" returns which would be -1(see the below snippet). All values out of this JSON path will feed to {#DEVICE} low-level discovery macro. The following examples illustrate how you can use JavaScript preprocessing. statusName, I get this (expected) error: XPath for JSON 特別なスクリプトを書かずとも、JSONを双方向に検出&抽出できるライブラリ; XPathがXMLを参照するのと同様に、JSONPathは常にJSONを参照するようになっている XPathとは何者か; 簡単にいうと、JSONから欲しいkey,value,lengthなどを取得できて便利 Oct 1, 2019 · Preprocessing was introduced in Zabbix 3. Filter expression SNMP walk to JSON. In some setups Zabbix has to work with large json data that is used as master item for thousands of dependent items. CSV, no header to JSON conversion i. label[‘device’]. This Suggested changes for the doc page: All examples, containing [0] should explain that it's an array index, not object key name. JSONPath consists of segments separated with dots. Filter expression セグメントは、json 値の名前 * のような単純な単語と、あるいは角括弧 [] で囲まれたより複雑な構造体です。 セグメントを区切るドットはオプションで、省略することもできます。例えば subscript operator. I assume there's just something very simple and small wrong in the configuration, but. This helps to save a lot of space and still to display the required data. It also introduced a variety of new approaches to transform the data before storing it in the database: regular expressions, simple trims, XPath and JSONPath support. Of course, as we will discover it’s only the format that matters for Zabbix to consider a response as LLD information. Using JSONPath and XPath Data editing Jun 28, 2021 · Using Zabbix Dependent Items and JSONPath we can significantly reduce the number of times we hit an API when monitoring the metrics it makes available to us. Mar 27, 2023 · Examples. [met rics]. 0. The full JSONPath functionality as described in this page is available starting with Zabbix 4. In the latest values I am seeing a good JSON out put. Using JSON RPC Nov 18, 2020 · In this lab we will use a bash environment and utilities ‘curl’ and ‘jq’ to perform Zabbix API calls, do some scripting. . This is the reply I'm getting. Note that since Zabbix 4. In some parts, functionality is still limited, but it promises to become much wider with the release of Zabbix 2. discovery" above, the server would generate one set of items, triggers, and graphs for the loopback interface "lo", and another set for interface "eth0". Convert SNMP values to JSON. 1. 2. run["aws autoscaling describe-tags --region {$ZABBIX_ASG_REGION} --query 'Tags[?ResourceType==`auto-scaling-group` && Key==`{$ZABBIX_ASG_TAG}` && Value==`{$ZABBIX_ASG_VALUE}`]'. 2, the format of the JSON returned by low-level discovery rules has been changed. if. net . 8 and still is under heavy development. author": unsupported character in json path starting with: "[-1 Together with ZBXNEXT-4200 and ZBXNEXT-4163, support of 'advanced' JSON Path expressions is required to select specific JSON object's attribute from the item. path you use? If you use filtering ( $. What we will need to add though, are Zabbix macros. It will be better to not use such [0] in first example. access the parent item and with the help of Some low-level discovery macros come "pre-packaged" with the LLD function in Zabbix - {#FSNAME}, {#FSTYPE}, {#IFNAME}, {#SNMPINDEX}, {#SNMPVALUE}. P. 2. For example: We're close, but the JSON document does not meet Zabbix’ requirements for LLD quite yet. path == "value")]) Preprocessing workers. 11. Note that on other errors failure is returned (e. In that JSON, the data element has five objects, each with distinct attributes. Zabbix API was introduced in version 1. Nov 11, 2019 · The preprocessing tab as you all currently know it was added in Zabbix 3. Add trigger prototype based on your requirements. Code: $. Then you may use any other LLD macro name and refer to that name. JSON array will preserve same order as in CSV Nov 25, 2019 · Zabbix will generate the security report with monitoring results, which contains some potential vulnerabilities Zabbix can process. The built-in preprocessing options can be used to extract information, such as regular expressions, JSONPath and XML Path, CSV to JSON, or JavaScript. The separating dot before bracket segment is optional and can be omitted. Transform XML and CSV data to JSON structures. When I read the manual from the teltonika site , the first step is to get a token. For example : I have LLD macro created from discovery with JSON path and value is hostname : example. AutoScalingGroups. title ALL others result in unsupported errors, two examples: cannot extract value from json by path "$. Failed: cannot extract value from Dec 29, 2022 · Hello, Been a day trying to get a simple discovery rule to work, creating a couple of items from a JSON file fetched by a HTTP Agent. Since for loop starts perfectly but when it goes to if condition, first of all you're not checking for equality instead you are assigining to json[i]. 2 I think a 4. Example: You are able to use pre-processing rules to transform your incoming data, but in this example, the script with transform the data into JSON before it reaches Zabbix. books[-1]. “The Path of the JSON” JSON API Monitoring with the HTTP Agent Item Video Lecture. Instances. And i got instance ids with item prototype that have next preprocessing JSONPath - $. CSV will be converted into JSON array of JSON objects, where each element is a combination of column number (key) and row data (value) ii. x does not provides anything like test page for testing filters with some inputs and any problems with filters are not reported in logs. S. Cannot process LLD macro "{#STATUS. 4, with one of the preprocessing options being JSONPath, where you can specify the JSON path to be used to convert output to JSON — $. The correct path for your example would be: Jan 29, 2020 · Example of JSONPath with the JSON you provided cannot extract value from json by path "$. [*] And it works. If JSON contains object with only one "data" array element, then it will automatically extract content of the element using JSON Path $. But I can not use a name, password to get data immediately in one step. [start:end:step] array slice operator borrowed from ES4. Once we force the Zabbix agent to execute this item, it will reply with something like this: Apr 16, 2021 · So I thought possibly the issue was how the LLD MACRO is being extracted, and I assume this is specific with how external scripts parse JSON (as dependent items) versus how zabbix agent works. Let’s use built-in agent key: vfs. In most cases those items are generated by lld using the same data and have similarly formatted jsonpath's for metric extraction. ResourceId --output json"] with a JSONPath of. Everything works fine, except for data that has "-". It is no longer expected that the JSON will contain the I have a bunch of "old" LLD where I create a json object specifically for the zabbix LLD and then each item discovered is individually monitored. rabbit_json. [,] Union operator in XPath results in a combination of node sets. Oct 26, 2022 · Use Zabbix preprocessing to extract metrics from structured data: Extract data with JSONPath and XPath expressions. In the past, there was a requirement that a JSON document used for LLD had to have a parent “data” object. number for example) it is expected to return value with [] as result is actually an array of values (in your case an array with single value). XPath uses it to iterate over element collections and for predicates. Oct 7, 2023 · (here I write from top of my head with a bit of guide from Zabbix doc, so might be some mistake in JSON path, you should be able to test it in Zabbix UI with Test Now button to see if it's working as expected ot not) 4. discovery. A segment can be either a simple word like a JSON value name, * or a more complex construct enclosed within square brackets []. I will use Python to transform the data into JSON, but you can use any scripting technique you like that can output a string that looks like a JSON response. Zabbix will assume that row names are stored in the first column 1. JSONPath allows alternate names or array indices as a set. category $. Filter expression Oct 26, 2022 · For this example, we will transform CSV to JSON; Open the Preprocessing tab; Select a structured data preprocessing rule; If required, provide the necessary parameters; Optionally, select a validation preprocessing step; For this example, we will check for errors in JSON; Extract a value by using JSONPath or XML XPath preprocessing steps Oct 21, 2020 · Then we can use value mapping in Zabbix to collect the number in the database and, at the same time, display the actual status. filters $. Supported value types: String, Text, Log. filters. This section outlines the supported JSONPath functionality within item value preprocessing steps. For example process JSON based on LLD result: like: 1. that is all under assumption that your actual JSON is correct. Note. I went down the path of the JSON looked fine compared to similar items I have using zabbix_agent to parse JSON. fs. Parameters: value - the value to check; path - the path (must be quoted); default - the optional fallback value if the JSONPath query returns no data. JSON array will preserve same order as in CSV b. Feb 24, 2021 · Code: system. The response object, in turn, contains the following properties: jsonrpc - the version of the JSON-RPC protocol;; result - the data returned by the method;; id - an identifier of the corresponding request. Description. docx I am working on parsing an JSON out put, seem I can not get the path correct. Preprocessing options available 1 Escaping special characters from LLD macro values in JSONPath. Many devices and services now provide REST APIs that you can query and get JSON formatted data as a response. NAME}": json path not valid: unsupported character in json path starting with: ". to. Go to Data collection → Hosts. Zabbix JSONPath consists of segments separated with dots. The Zabbix server configuration file allows users to set the count of preprocessing worker threads. When use this macro in item key prototype : hostname[{#MYMACRO}] Dec 2, 2015 · The JSON document in the question is not very valid for low-level discovery. The StartPreprocessors configuration parameter should be used to set the number of pre-started instances of preprocessing Starting with Zabbix 4. g. node to use, how do I see the returned JSON from a query? The use case is working with the entitySensory and entity MIBs - I need to discover sensory items, values, and also discover their units and use a macro in the Sep 21, 2017 · In Zabbix 3. Overview. Dec 12, 2019 · Hi guys got any hint how to get key names from json ( seems that zabbix support pure jsonpath , it is possible in jsonpathplus - see link - via ~ symbol ) Apr 1, 2021 · For the sake of clarity, we will stick with the default Zabbix agent item. ServersData[0]. Jun 8, 2020 · I have an understanding of what JSON is, the returned formatted data from Zabbix_get queries, but how do I know the path. However there is not much point of extracting the name of an element matching a definite path - it's already known. Comments: Similar value formatting options as in the SNMP walk value step are available; You may use this preprocessing step for SNMP OID discovery; 1 Escaping special characters from LLD macro values in JSONPath. Code: [. Oct 21, 2020 · You can use JSONPath or XPath to check for errors in JSON or in XML, for instance, to display the errors or just to discard the unneeded values. For example (mentioned in ZBXNEXT-4163) Is there any possibility of using LLD MACROS in item preprocessing. For example: Nov 12, 2019 · Hello all First sorry for my english . data Nov 17, 2021 · If you want to get a specific field from the JSON you have to configure an item of the type HTTP agent: Do NOT check Convert to JSON, it might be tempting, but it is meant to convert non-JSON answers to JSON. The LLD is meant to create a lot of similar items, with the same configuration and different values. Cannot figure out what. InstanceId This item has value next format ["i-xxx111","i-xxx222"], but i dont understand how to create next item prototype with names as each instance-id from this Hi I collect data with script from HPE MSA 2040. The output format follows the same rules as other JSONPath queries - definite path results are returned 'as is' and indefinite path results are returned in array. name which is the first element/object of json arrray to whatever ~"{HOST. phoneNumbers[?(@. 4, the data source can for example, contain an array of data in a JSON, XML or frivolous text format. 4. Field values will be populated by values in the specified SNMP OID path. "unsupported construct"). However, there is minimal value in extracting the name of an element that matches a definitive path, as it is already known. price $. However, adhering to these names is not compulsory when creating a custom low-level discovery rule. The input data has array of objects, each having set of properties that are monitored. Most web API’s today use some sort of JSON-formatted data structure to deliver data. Before proceeding, set the StartVMwareCollectors parameter in Zabbix server configuration file to 2 or more (the default value is 0). Create a host. In other words input json can be like in your json1 but you need to add definitions in "LLD Macros" tab. type == 'home')]. JSONPath由用点分隔的段组成。 段可以是一个简单的词,如 JSON 值名称、*,也可以是括在方括号 [] 中的更复杂的构造。 括号段前的分隔点是可选的,可以省略。 例如: May 9, 2019 · Out of all the examples given, only the following work as intended and return a result: $. In short, I have an item which fetches the JSON file by HTTP and that works. Something like that would be more appropriate (note the LLD macro syntax): May 11, 2021 · =is used for assignment but not for comparison. Here is an example of JSON code: Jan 5, 2019 · I am using Zabbix Server 4. Attached is an example of the JSON value. books[1]. Here is an example of JSON code: May 14, 2019 · While this example is quite a trivial, Javascript preprocessing can be used in complex things like analyzing input data, converting text data to other formats (JSON), etc. ?() jsonpath(value,path,<default>) Return the JSONPath result. 0 agent. Dec 15, 2022 · I created discovery rule with master item as previous json. When low-level discovery macros are used in JSONPath preprocessing and their values are resolved, the following rules of escaping special characters are applied: In the example with "net. You already have JSON, so you don't need it. Luckily this was changed in Zabbix 4. host. In Javascript and JSON it is the native array operator. If i go one level deeper and try $. However that feature is available in zabbix +4. Create a host: In the Host name field, enter a host name (for example, "VMware VMs"). Filter expression Aug 2, 2022 · Hello, I am extracting a JSON data set and trying to run discovery with LLD macros and item prototypes. ‘curl’ is a tool to exchange JSON messages over HTTP/HTTPS. 2 and now any JSON array will be accepted. To get the value I am using the HTTP agent passing in a URL and looing for an TEXT output. In the Host groups field, type or select a host group (for example JSONPath (parses the data into object tree and indexes the first expression [?(@. I Apr 19, 2019 · Hi I collect data with script from HPE MSA 2040. For a quick overview, take a look at an example Zabbix API session or read below for detailed explanation. Check for error messages in JSON and XML structures. Each example contains a brief description, a function body for JavaScript preprocessing parameters, and the preprocessing step result - value returned by the function. I'm working on teplate for LLD discovery JSON data from API and i have problem with creating item prototype. cpu. Example. Dec 22, 2022 · a script gives you the item value, for each brand, so the item value can return 10 for Ford, and you usually set a short interval, 1m or less. Extract and transform metrics from Prometheus exporter endpoints. I'd like to try the "new" method where from a single non-specific json object I can make the discovery and create dependent items altogether. value": cannot parse as a valid JSON object Jun 23, 2021 · Noobz can you actually show original JSON and JSON. And there are many such parameters. [*]. Security report example. Next, add a prepocessing step of the type JSONPath. Basically, whenever Zabbix standard preprocessing options fall short, there is a good chance it can be done with Javascript preprocessing. AFAIK Jun 11, 2020 · I would like to connect to the Teltonika modem device using json-rpc 2 and using HTTP agent in zabbix server. Specify a field name in the JSON and the corresponding SNMP OID path. 4, when low-level discovery macros are used in JSONPath preprocessing and their values are resolved, the following rules of escaping special characters are applied: only backslash (\) and double quote (") characters are considered for escaping; iii. Jun 28, 2021 · Using Zabbix Dependent Items and JSONPath we can significantly reduce the number of times we hit an API when monitoring the metrics it makes available to us. Supported locations Zabbix will automatically extract macro and value if an array field uses {#MACRO} syntax as a key; For backward compatibility Zabbix will accept JSON notation with "data" element. A segment can be either a simple word like a JSON value name, * or a more complex construct enclosed within square brackets [ ]. vinrt hopewjf rqx muiguyxa wqv gkplg eekwfy drf kermd hxzfp