Zabbix json preprocessing example. Filtering VMware event log records.
Zabbix json preprocessing example. Ford 12 Toyota 20 Honda 8 etc.
Zabbix json preprocessing example Validation preprocessing can check for errors in JSON, XML, or unstructured text with JSONPath, XPath, or Regex; User macros and low-level discovery macros can be used to define the In range validation values; The Check for not supported value preprocessing step is always executed as the first preprocessing step; Internal actions can be Hi I am really struggling to understand the right process behind this. 0", "method For backward compatibility Zabbix will accept older JSON notation with "data" element, but the syntax will be documented as deprecated. Socket-based IPC communication is used between data gatherers (pollers, trappers, Item Preprocessing with Regex Item Preprocessing with JavaScript interface, IOS or Android app, or integrate into another monitoring system. 1 Javascript preprocessing. The required JSON format is best illustrated with an example. 17. Skip to content. 2 Windows Zabbix agent. For our example, we will assign the {#IFNAME} macro to the OID containig the values of interface names: Field name: {#IFNAME} OID prefix: 1. Query language comparison. e. document. So querying a host once, getting all the metrics in bulk, and then parsing it in Zabbix using preprocessing. This post is Use normal JSON as a native data source for LLD, therefore it will handle JSON without any preprocessing a. As an example, for the Dependent Item 6 CSV to JSON preprocessing. For example, 7. Then dependent items can be configured to extract specific pieces of data from that collection via preprocessing and store them as individual metrics. 13 Problem acknowledgment. Examples Creating an LLD rule. Create a Zabbix agent LLD rule to discover mounted file systems. WHAT IS PREPROCESSING? Preprocessing allows to define transformation rules for the received item values. if . Follow answered Nov 13, 2023 at 9:05. Provide details and share your research! But avoid . It's supported in: items (item prototypes) low-level discovery rules; Configuration. Follow asked Nov 12, 2023 at 0:57. 3 Item types. 0 Example. 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. The most important part of configuring the low-level discovery rule lies in defining the SNMP walk to JSON preprocessing step. For example (mentioned in ZBXNEXT-4163) Is there any possibility of using LLD MACROS in item preprocessing. 3. Most web API’s today use some sort of JSON-formatted data structure to deliver data. {"data": [{"Host_Name": "example 1", "Running": True}, I am trying to configure an item in Zabbix to preprocessing some data collected and I need to work out a piece of Javascript code in order to loop through the result spit by Zabbix which is collected by an API CALL and count how many words "ERROR" and "WAITING" (just the ones in capital letter) it were found in the dump file. 4 IPMI checks. 4. Essentially i have a script that runs and pulls back a load of Host Names and their associated Running Status (in JSON formatted to let Zabbix read it. Transformations are executed in the order in which they are defined. This rule will discover entities and set: {#IFDESCR} macros to lo, ens33, and ens37; {#IFTYPE} macros set to 24, 6, and 6. Item Preprocessing with JavaScript Item Preprocessing with JavaScript Table of contents JSON API Monitoring with the HTTP Agent Log File Monitoring - Apache/Nginx HTTP Status Codes Zabbix API Introduction and Examples Zabbix 6 CSV to JSON preprocessing. And sometimes, the path that would work correctly in the Hi ISiroshtan, Thank you very much, this is indeed very helpful, but I should probably have begun with what I need as a final result. Here is a simple Perl script for Linux that discovers mounted file systems and outputs JSON, which includes both file system name and type. Item configuration: Note the use of the POST method with Zabbix Acceptance. It will be better to not use such [0] in first example. 1 Additional JavaScript objects. By pulling all the attributes with JMX and then filtering only the MessageCount with $. JobStatus For your json example the 6 CSV to JSON preprocessing. 2 Special OIDs. timeseries[0]. selectValueMap: query: Return a valuemap property with item value map. 12 Regular expressions. 255 = Hex-STRING: FF FF FF FF FF FF I cannot seem to find how in zabbix preprocessing or LLD Macros to traverse data relationships in this way. Your example is a little off the edge for LLD or Zabbix but let's try and take an example using Item Prototype. 2-3. For more details, see Discovery using Prometheus data. This development should help avoid situations when the prolonged preprocessing of one item holds up others. 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. 2 Browser item JavaScript objects. Item preprocessing rules will be internally classified as: transformation rules: transform input value into output value using function, fail if something goes wrong; validation rules: validate input value, fail if input value But when I set a Discovery Rule with the same key, same preprocessing, and the following LLD Macro settings: I'm getting nothing, and no Item Prototype is resolved to an item. Now use a JSONPath preprocessing step to get the item value: $. value[1] ("1" : 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. Improve this question. 3 SNMP traps. 0); 6 CSV to JSON preprocessing. If dot notation is used, it must be specified as just object 3 Preprocessing usage examples Overview. Preprocessing 可以运行在 zabbix ser Examples. CSV to JSON preprocessing. GitHub Gist: instantly share code, notes, and snippets. For example, Making original JSON object a fully LLD compatible JSON Array Tips and best practices. 0-0, 7. 6 CSV to JSON preprocessing. This json is the result of a prometheus request which lists each pod status in $. Let’s have a look at the preprocessing methods, starting with the simpler ones. 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. 1 Zabbix agent 2. In this case data in JSON format are needed and the Prometheus to JSON preprocessing option will return exactly that. Naturally the preprocessing rule is not left there, just used for testing and the {#APNAME} LLD macro is the only thing left in the discovery rule. This guide walks you through the steps required to start basic monitoring of your network switch or router using Zabbix. Astora Astora. 主要介绍几种我在实际工作中常用的几种，其他的可以参考官方文档详细说明。 zabbix 通过监控得到了这个 json 串，但是对于数据的存放、数据的二次分析以及触发器的 6 CSV to JSON preprocessing. When creating a host group, You can also use such preprocessing for other discoveries too. Post Cancel. 1 Escaping special characters from LLD macro values in JSONPath. *tnslsnr ([^ ]*) : Share. In this preprocessing step it is possible to convert CSV file data into JSON format. error(object) In this example we are using a Zabbix agent item type. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 0-3, 7. 5 JavaScript preprocessing. For example, you may want to extract the customer name and interface number from the following LLD macro for the purposes of event tagging: Macro functions are supported in low-level discovery macros since Zabbix 4. (for example, zabbix/ui/modules). Using a regular expression preprocessing to filter unnecessary events of the VMWare event log. The following table lists differences and similarities between PromQL and Zabbix Prometheus preprocessing query language. Dependent Items and JSONPath allow us to dig through that data with ease! Zabbix preprocessing options can be used to extract the part that is needed for the dependent item from the master item data. value". One or several transformations are possible before saving values to the database. 6. Description. stringify(object)) console. Failed: cannot extract value from 6 CSV to JSON preprocessing Overview. The Grafana tutorials from earlier are an example of using the Zabbix API to read the data and create custom dashboards. This example uses the Custom multiplier preprocessing step to check if the retrieved item value type is numeric. 3 JSON examples for VMware items. With your example json will zabbix create the items per each "name" value? Yes, it will create item for each entry of array Comment. 7, matched element names can be extracted by adding a ~ suffix to the JSONPath. JSONPath is composed of segments separated by dots. 3 Preprocessing examples. Add the "Log test" entry to the Zabbix server log and receive the item value "1" in return: Item Preprocessing with Regex Item Preprocessing with JavaScript Zabbix API Introduction and Examples Zabbix API Testing Tool Zabbix API Python Example Zabbix API User Permissions JSON API Monitoring with the HTTP Agent Item Video Lecture. 2 Special OIDs Note that extensive use of calculated items with long time periods may affect performance of Zabbix server. Ова секција представља примере коришћења корака предобраде за постизање неких практичних задатака. Checking if Zabbix API is alive, using apiinfo. In the field name specify a valid LLD macro name. =is used for assignment but not for comparison. selectTags: query: Return the item tags in tags property. data. Sum of two functions: last (//net. Trademark Policy. data[59]. ' , for example $. For example, you may return 'bix' from 'Zabbix' by specifying 3 rightmost characters to return. 725 2 2 gold You can add a second preprocessing rule, for example a regular expression . 使用 JSONPath 功能 从 JSON 数据中提取值或片段。. Iron Bishop 3 JSON examples for VMware items. You know that Zabbix supports multiple types and ways of preprocessing, such as XPath, JSONPath, regular expressions, and also 14 Preprocessing by Javascript details. application/json" \--request POST \--data '{"jsonrpc": "2. Register the module in Zabbix frontend. Testing preprocessing steps is useful to make sure that complex preprocessing pipelines yield the results that are expected from them, without waiting for the item value to be received and preprocessed. zabbix_utils is a Python library for: working with Zabbix API; Our documentation writers will review the example and consider incorporating it into the page. item. name which is the first element/object of json arrray to whatever ~"{HOST. Javascript preprocessing is done by invoking JavaScript function with a single parameter 'value' and user provided function body. NAME}" returns which would be -1(see the below snippet). 3 MIB files. . This change adds a new required library for Zabbix server/proxy -libevent_pthreads. 4 VMware monitoring setup example. For example process JSON based on LLD result: like: 1. 11 Maintenance (PCRE, PCRE2) are supported in Zabbix. This section presents examples of using preprocessing steps to accomplish some practical tasks. As I'm advising you to go 2nd route, I will give you example how to proceed with it: So you created your "master" item and it collect JSON Path. For example: 6 CSV to JSON preprocessing. Improve this answer. json; jsonpath; zabbix; Share. 4 CSV to JSON preprocessing Overview. Discovered items will be updated every 30 seconds. high-t. name=='MessageCount')] But I don't see how to setup alerts from here. I created the LLD macro in discovery and an Item with preprocessing: JSONPath -> $[?(@. This section presents a step-by-step real-life example of how web monitoring can be used. 2 SNMP agent. Suppose we are running an old Zabbix 1. name) in the discovery rule I get expected (?) results, it returns ["AP01 Upstairs","AP02 Lobby","Total-AP"]. Item prototype = "Checkout for user {#USERNAME}" Here you can use another call for your API to get the data from the "total_price" of one of {#USERNAME} checkouts, every new checkout is a new item value in history. value[0]. Select the corresponding OID path to discover values from. You can read about output in JSON format and check examples on mapping LLD macros — basically about anything you have read in this article. The separating dot before bracket segment is optional and can be omitted. 4 Discovery of SNMP OIDs (zabbix. Zabbix JavaScript Preprocessing. Search Gists Search Gists Converts all json {#NAME} for example D0 9C D0 BE D0 B4 D1 83 D0 BB D1 8C 20 D1 81 D0 B1 D0 BE D1 80 D0 B0 20 D1 82 D0 BE D0 BD D0 B5 D1 80 D0 B0 20 48 50 20 43 45 39 38 30 41 00 to "Модуль сбора Preprocessing is done by Zabbix server or proxy (if items are monitored by proxy). And add one more example: If object name is a digit and bracket notation is used, it must be quoted. 4 News - preprocessing Two new preprocessing steps have been added SNMP walk to JSON - convert SNMP walk values to JSON SNMP walk value - extract and format SNMP walk value Thread-based preprocessing workers The item value preprocessing has been rewritten to use thread-based preprocessing workers for 6 CSV to JSON preprocessing. JSON Path – Dig into JSON data structures using JSONPath to grab and store the precise piece of data you need; Simple Change or Change Per Second – Many counters are incremental and this allows Zabbix to automatically 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. To configure a CSV to JSON preprocessing step: Go to the Preprocessing tab in item/discovery rule configuration; Click on Add; Select the Prometheus to JSON. 15 (Unix) DNS lookup threads: 10 You will find examples, explanations of preprocessing parameters, patterns, and output, as well as similarities and differences between the PromQL and Zabbix Prometheus preprocessing syntax. 255. Preprocessing can be used not only to WMI, JMX and ODBC data collection returns JSON arrays – ready to preprocess via JSONPath! JavaScript engine! With JavaScript you can perform: Preprocessed data - ready for LLD! The A part of my application looks like this example : We focus on car brands and number of cars in a garage. XML to JSON: Convert data in XML format to JSON. 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]. You need two script for for a LLD: a script gives you the LLD list, so [{"{#BRAND}: ""}], and you usually set a long interval, 1h or more. For example, when an item's value is "0" or "1," value mappings can be used to represent these values in a more user-friendly manner: One of the predefined agent items Zabbix agent ping uses a template-level value mapping 3 JSON examples for VMware items. To configure a CSV to JSON preprocessing step: Go to the Preprocessing tab in item/discovery rule configuration; Click on Add; Select the 1 Preprocessing testing Testing. See also left(). discovery"), but we still need to discover file systems. 31. Filtering VMware event log records. The discovery rule can also be a dependent item, depending on a regular item. Data in JSON format are needed for discovery and the Prometheus to JSON preprocessing option will return exactly that, with the following attributes: metric name; metric value; help (if present) type (if present) labels Suggested changes for the doc page: All examples, containing [0] should explain that it's an array index, not object key name. Our documentation writers will review the example and consider incorporating it into the page. A segment can be either a simple word like a JSON value name, * or a more complex construct enclosed within square brackets []. 4 JSONPath functionality. For more information, see: Serialization rules. Zabbix export/import functionality makes it possible to exchange various configuration entities between one Zabbix system and another. JobNr == [{#JOBNR}] )]. 1 Dynamic indexes. Here we can assign low-level discovery macros to OIDs. Supported: scientific notation, for example, 1e+70 (since version 2. [?(@. Preprocessing ZABBIX 6. tips - With Preprocessing you can alter, fit and adjust your incoming data in any way shape or form you wish. Discovery from array of JSON objects with nested objects Hello, could you please advise whats wrong. Calculating total bandwidth on eth0. I have created an item with preprocesing on json path - $. That’s why on the dependent items we apply preprocessing to filter relevant information, for example, the BusyWorkers: Perfect. 2. 1. Example 3. To configure a CSV to JSON preprocessing step: Go to the Preprocessing tab in item/discovery rule configuration; Click on Add; Select the Return a preprocessing property with item preprocessing options. Estou disponibilizando o projeto que fiz a algumas semanas para acompanhamento do COVID19 a nível mundial utilizando somente o Zabbix e Grafana. 4 to try out the new SNMP OID discovery way to bulk get SNMP described in this section of the documentation. 3 Примери предобраде Преглед. 0" 200 28083 Regexp Response code: 200 Size: 28083 Unstructured text Regexp Version: Apache 2. == or === for comparison. Ford 12 Toyota 20 Honda 8 etc Not very real but let's imagine that numbers change every hour (discovery rule Extract metrics from structured data with Zabbix preprocessing: Navigate to Configuration → Hosts; Find the host where structured data is collected; Click on the Items button next to the host; Create or open an item WMI, JMX, and ODBC data collection to JSON arrays enabling preprocessing via JSONPath. 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： To find a matching segment ignoring its ancestry (detached segment) it must be prefixed with '. And now to the problem. A segment can take the form of a 3 Preprocessing examples Overview. This would make discovery filters even if proper MIBs are not loaded into Zabbix server or proxy. For more information, see: CSV to JSON preprocessing. Zabbix web monitoring will be used to monitor Zabbix frontend. Though Example(sanitized): SNMPv2-SMI::mib-2. filter: object: Return only those results that exactly match the given filter. The goal is to determine if it is available, provides the right content JSONPath consists of segments separated with dots. Copy. 13 Python library for Zabbix API Overview. There are two ways of using regular expressions in Zabbix: manually entering a regular expression 6 CSV to JSON preprocessing. It returns the name of the matched object or an index in string format of the matched array item. So the master and dependent items are identical when no preprocessing is applied. In the discovery rule, go to the Preprocessing tab and select the Prometheus to JSON preprocessing option. The preprocessing step result is the value returned from this function, for example, to perform Fahrenheit to 6 CSV to JSON preprocessing. hits[0]. hits. result. 5 CSV to JSON preprocessing Overview. 11 Maintenance. Zabbix server or Zabbix proxy (if host is monitored by proxy) are performing 6 CSV to JSON preprocessing. com) The documentation describes in a good way how to create the snmp item and the discovery rule using Dependent item and SNMP walk to JSON preprocessing. To configure a CSV to JSON preprocessing step: Go to the Preprocessing tab in item/discovery rule configuration; Click on Add; Select the 6 CSV to JSON preprocessing. Back to top. It is possible to test: against a hypothetical value; against a real value from a host I upgraded to Zabbix 6. In this case, Zabbix will use LLD macros from the JSON LLD Filters must be applied after preprocessing rules Example of "CVS to JSON" conversion: CSV: Year,Make,Model 1997,Ford,E350 2000,Mercury,Cougar JSON Enqueues the items in the preprocessing queue Assigns the preprocessing tasks to preprocessing workers Flushes the preprocessed values from the queue StartPreprocessors defines the value of pre-forked preprocessing workers Number of workers determined by: Count of preprocessable items Count of preprocessing steps etc. Zabbix. maximum I have tested the step: I got the value what i needed, but when i check on item i have 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; if the resolved macro value contains these characters, each of them is escaped with a backslash; Hello, I am extracting a JSON data set and trying to run discovery with LLD macros and item prototypes. Create an "Master" item (just regular item onto which dependent items will be pointed later) of Zabbix agent type, that will execute your script and will collect resulting json and store it as a string type data. 1. 如果勾选 自定义错误处理 选项，可以指定自定义错误处理选项：丢弃值、设置指定值或设置指定错误消息。 如果预处理步骤失败，选择丢弃值或设置指定值选项时，监控项不会变为不支持状态。 CSV to JSON 6 CSV to JSON preprocessing. Asking for help, clarification, or responding to other answers. Module example. My attempts keep bringing me to snmpwalk to json, followed by jsonpath, but jsonpath cannot key into any of my macro variables 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。 In the Preprocessing tab, select the SNMP walk to JSON preproccesing step. Since Zabbix 4. This example Preprocessing is done either by the Zabbix Server or by Zabbix Proxy (for items monitored by proxy). In the Preprocessing tab of an item, select the "Custom multiplier" preprocessing step and set the following parameter: Zabbix is the ultimate enterprise-level software designed for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines and network devices. 1 Zabbix agent. log(3, JSON. Example: Zabbix. The item value preprocessing has been rewritten to use thread-based preprocessing workers for enhanced parallelism and reduced overhead. 2-0, 7. name or $. For example, the master item might collect a JSON or XML response containing 4 CSV to JSON preprocessing Overview. _source. Preprocessing is done either by Zabbix server or by Zabbix proxy (for items monitored by Preprocessing VALUE PREPROCESSING 12 C Trim Temperature: 12 OFF (down) Replace Service: 0 (down) { "users":10004} JSON Number of users: 10004 "GET /index. html HTTP/1. Preprocessing allows you to apply transformations to the received item values before saving them to the database. If I test with a preprocessing rule (JSONPath, $. It cannot depend on another discovery rule. These transformations/preprocessing steps are performed by Zabbix server or proxy (if item This section outlines the supported JSONPath functionality within item value preprocessing steps. templates: Root element for linked The topic for today is a bit more interesting than usual because today I want to talk about dependent items and master items, the benefits of those and what you can get while using them, and also about preprocessing. Socket-based IPC communication is used between data gatherers (pollers, trappers, etc) and the preprocessing process. I believe it will work as is, except some of the JSON objects have brackets in the name such as "Voltage(V)" and I simply can't get past this as is due the following error: 1. It should be short "$. 8 agent (one that does not support "vfs. Text preprocessing – a value is retrieved using Parsing structured JSON in Zabbix is easy with JSONPath—until you need more advanced filtering or conditional logic. 2); user macros and LLD macros (since version 4. Zabbix Documentation is licensed under the following license. I. A Cisco router is used as an example, but In preprocessing you should be using the HttpRequest class that is provided by Zabbix for fetching data over HTTP protocol. That’s where JavaScript preprocessing comes in. 1 Webhook script examples Overview. 2 Special OIDs revision number (increased with each new version of the template, and reset with each major version of Zabbix). The preprocessing step result is the value returned from this function, for example, to perform Fahrenheit to Celsius conversion user must enter Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company This section outlines best practices for configuring Zabbix to achieve optimal performance and ease of use. version. ; a script gives you the item value, for each brand, so the item value can return 10 for Your example Json isn't an array which should start with square bracket [] Just one thing to note: multiple times when I was working with LLD, I would get the json value that Zabbix receives and use it in a preprocessing step (JSONPath) to simulate what the LLD Macros were extracting. fs. value Example 3. ['name'] return values of all 'name' properties. Then you To find a matching segment ignoring its ancestry (detached segment) it must be prefixed with '. bnsv gsl jnn rgrdu junn imxns oxlpw ksiwygqt dhbv yhv rei sea zdx fotrk wizq