_{Zabbix lld macro jsonpath, Instances. 1 Escaping special char Zabbix lld macro jsonpath, Instances. 1 Escaping special characters from LLD macro values in JSONPath. The {HOST. iopoints/lights/. Are Macros JSONPath for LLD macros (HTTP agent discovery rule) 07-02-2021, 19:37. price: definite: 10 $. vfs. 5 Only the avg, last, max and min functions, with seconds as parameter are supported within this macro in graph names. You can test it with "/usr/sbin/zabbix_agent2 -t systemd. TY, removed "data" and it still works. Something like that would be more appropriate (note the LLD macro syntax): 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. Click on Add. 10 CentOS appliance. category: definite: fiction $. discovery [service]" command to see what LLD macros it produces. 2); user macros and LLD macros (since version 4. NAME}' && @. Escaping special characters from LLD macro values in JSONPath. content[?(@. *?)" It worked (at least on regex101) but my items become disabled because zabbix interpret {#Y} as a LLD macro in the output, and the return is something Originally posted by michalb View Post. basename will get you the basename value of each item in the JSON array. Use quotes when you're quoting someone. DataSource== ' {#DS. 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 1 Escaping special characters from LLD macro values in JSONPath. For example: Parse JSON response. Let’s recall how LLD works. I always had issues whenever I tried to preprocess my JSON usind the two dots after the dollar sign (not sure why, JSONPath is still something new for me) Maybe it could be related to the JSON you are getting after prepocessing LLD is one of Zabbix most powerful mechanisms. type == "TYPE")]. Overview JSONPath consists of segments separated with dots. For this, I need to use a JSONPath preprocessing step. There are a lot of functions and preprocessing options available to use nearly any data format as basis for item discovery and extract relevant parameters as LLD-macros. Also accepts LLD Filtering with Macros. This discovery is using a URL that returns a token value. Any new native discovery checks will use the new syntax without the "data" elements. 0); strings that include macros, for example, {#MACRO}e+10 If Zabbix server or proxy is restarted or there is any change made to preprocessing steps . There are a lot of functions and preprocessing options available to use nearly any data format as basis When configuring monitoring and using templates in Zabbix you often see low-level discovery (LLD) used for finding out the monitored components or features of You can do it even easier and cleaner though: The discovery rule configuration page has a tab for LLD macros, where you can create mappings between Zabbix macro names The full JSONPath functionality as described in this page is available starting with Zabbix 4. When configuring monitoring and using templates in Zabbix you often see low-level discovery (LLD) used for finding out the monitored As the LLD Macro function needs a JSON path this doesn't work, there is just a string which is the token. create an item prototype, name Quantity for {#NAME}, type "dependent item", to make it unique, use something These macros are variables, identified by a specific syntax: {MACRO} Macros resolve to a specific value depending on the context. statusName" found. Thus a trigger on a template may be named "Processor load is too LLD macros in zabbix 4. 1 Zabbix agent 2. Teams. Originally posted by James9322. If I hardcode the inventory tag it works but have had no success trying to use a macro within the parameters of JSONpath. You can find this function on Zabbix manual page ( i'm using 4. Hi , my solution is using regsub on LLD macro . LLD Macros. filters: definite {"price": 10, "category": Description LLD is one of Zabbix most powerful mechanisms. AutoScalingGroups. 4 ) . Since I can't "test" using the macro section, I used the "Preprocessing" to Overview. As the LLD Macro function needs a JSON path this doesn't work, there is just a string which is the token. Fill in the discovery rule form with the required details as in the screenshot below. 1 Zabbix agent 2 (PCRE, PCRE2) are supported in Zabbix. Note that if the first line of CSV input starts with "Sep=" and is followed by a single UTF-8 character then that character will be Hello! I've configured a discovery rule that is an HTTP agent. JSON sample: { "Intf": "0/1" , "Detection": "Unknown" , "Class": "Unknown" , "Consumed": "0. fstype, thus making such script possible: The JSON document in the question is not very valid for low-level discovery. The easiest way to populate the keys of a discovery item is to add a “UserParameter” in zabbix_agentd. 00" , "Voltage": "0. Zabbix low-level discovery (LLD) provides a way to create an array of related items, triggers, or graphs without needing to know the exact number of entities up front. 08-02-2022, 04:31. 2, {HOST. ". 00" , "Current": What we're wanting to do here is to have Zabbix look at the above JSON and pull the "name" items. Property behavior: - read-only - required for update operations delay: string: Update interval of the LLD rule. 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 list. In case JSONPath is used then LLD row will be an array element that can be an object, but it can be also another array or a value. If we remove the preprocessing rule, and create a LLD Macro: {#BEARER} As LLD-Macro in the discovery rule, I configured the following: In my understanding, this should create a new LLD-Macro for every instance of "$. In that JSON, the data element has five objects, each with distinct attributes. So, can someone help me? I am using zabbix I created low-level discovery macros {#CPUNUM} and {#MODE} pointed towards specific JSONPath elements. Hello! "Note that since Zabbix 4. You may have to REGISTER before you can post. InstanceId. For example, databases on a database server. By Markku Leiniö January 20, 2023. Code: Cannot find the "data" array in the received JSON object. To create our custom LLD macros and feed them with the values, we need to go Configuration > Hosts > Prometheus LLD and open the LLD macros tab, which is a new feature in Zabbix 4. My regex was: {#Y}":" (. 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 Either use a built-in key or your own UserParameter. This means that it is impossible to use LLD macros with JSON path effectively. You can also imagine the LLD rule bloat that would occur in large infrastructures with many unique entities. id and {#NAME} → $. 1 Zabbix agent. discovery : Used by Network Interface Property Type Description; itemid: string: ID of the LLD rule. 0 and understood that "since Zabbix 4. Here is a snippet of my JSON, the array, keys, and segments I am referring to Ultimately I want to grab the keys of each element [0,1,2]. What is missing is an easy way to process the values extracted from the LLD source data before they are assigned to Click on Discovery in the row of an appropriate template. Learn more about Teams Now click on LLD macros, in this step, we will map the fields of our json and create macros, that is, variables for Zabbix, the names defined in the LLD macro column, can be customized according to the need always keeping the standard {#NAME}, in JSONPath we need to specify according to our json using the standard $ ['name'] and $ The LLD is just a list: in your case, a list of PID. discovery [service] as the key (= it returns the list of services). Since Zabbix 5. Click on Create discovery rule in the upper right corner of the screen. Some inbuilt Zabbix agent discovery rules are. Q&A for work. 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. I'm using Zabbix version 4. net. A segment can As the LLD Macro function needs a JSON path this doesn't work, there is just a string which is the token. fsname and {#FSTYPE} → $. Cannot (@. Hi! First time poster here, not that experienced with Zabbix. Select the CSV to JSON option. In one of typical uses, a macro may be used in a template. To start viewing messages, select the forum that you want to visit from the selection below. Connect and share knowledge within a single location that is structured and easy to search. access_token. regsub (pattern, output)} Simply place macro to the path on item prototype with this function . Syntax is : { {#LLDMACRO}. On top of that list you build a number of item prototypes, where you read data using another UserParameter. I went down the path of the JSON looked fine compared to similar items I have using zabbix_agent to parse JSON. unit. fs. This will cause Zabbix server to stop (usually shortly after the start, but sometimes it can take more time). discovery : Used by Mounted Filesystem Discovery. 3 Item types. You can do it even easier and cleaner though: The discovery rule configuration page has a tab for LLD macros, where you can create mappings between Zabbix macro names and JSONPath expressions. a script gives you the #1 LLD macro - JSONPath 16-01-2022, 05:06 Hi, is this possible? In a discovery rule, I'm trying to configure a second item-prototype using a second LLD 1 Escaping special characters from LLD macro values in JSONPath. 11. filters. filters['no filters'] definite: no "filters" $. g. 5 CSV to JSON preprocessing. Note that, if using a user parameter, the return value is limited to 16MB. Low-level discovery overrides. 5. E. It returns the name of the matched object or an index in string format of the matched array item. NAME}' )]. if. fstype, thus making such script possible: Categories: Monitoring, Scripting. Once the LLD rule is set up, I can define my item prototype with the Prometheus pattern preprocessing step and plug the macros in for automatic discovery across all the Zabbix will automatically extract a macro and value if an array field uses the {#MACRO} syntax as a key. 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 Starting with Zabbix 4. 2, the format of the JSON returned by low-level discovery rules has been changed. ProtectionGroup== ' {#PG. 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 Code: [ { "name":"name1-asg"}, { "name":"name2-asg" } ] Then LLD worker will iterate over array, for first entry it will take: Code: { "name":"name1-asg"} And User defined LLD macros will override macros found in JSON (in reality it should not happen) Supported syntax for JSON path must be documented The "data" element will 2 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. If we remove the preprocessing rule, and create a LLD Macro: {#BEARER} : $. I'm monitoring some applications with a health check page returning health status of application and also showing dependencies. Then Zabbix returns. *} macros are no longer supported in web scenario Name and web scenario step Name fields. 2. What's happening is: I've created an prototype item on this discovery rule, it's a HTTP agent too, but this item will consum the discovery rule response (the token part) because this API requires a token Escaping special characters from LLD macro values in JSONPath. Accepts seconds or time unit with suffix and with or without one or more custom intervals that consist of either flexible intervals and scheduling intervals as serialized strings. There is an array in the JSON that is 3 elements long with a bunch of subsequent segments. I have a 1110 line JSON that I am referencing via an LLD Discovery Rule. If we remove the preprocessing rule, and create a LLD Macro: Code: {#BEARER} : $. The REST API to query is the one from deconz, https://dresden-elektronik. It is no longer expected that the JSON will contain the "data" object. All mandatory input fields are marked with a red asterisk. I am trying to write a discovery rule for an HTTP agent to query a REST API. 4 JavaScript preprocessing. Hello, I am extracting a JSON data set and trying to run discovery with LLD macros and item prototypes. The OIDs to discover are defined in SNMP OID field in the following 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; Zabbix should analyze the context where LLD macro is used and transform its value accordingly. I also use the help field to populate the description field. To JSONPath Type Result Comments $. 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 Escaping special characters from LLD macro values in JSONPath. 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. " I have a dependent test on an HTTP agent that returns json a second test that I would like to return a value based on the inventory tag. The expression $. I'm currently working in a project to migrate from Shinken/Nagios to Zabbix 4. 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; if the resolved macro value contains these characters, each of them is Escaping special characters from LLD macro values in JSONPath. 1 Additional JavaScript objects (since version 2. [*]. There are two ways of using regular expressions in Zabbix: manually entering a regular To configure a CSV to JSON preprocessing step: Go to the Preprocessing tab in item / discovery rule configuration. the alternative is to extract LLD macro values using JSONPath {#FSNAME} → $. To do this, each generated item has a preprocessing with regex to be generated with {#Y} value. I found I can accomplish this with *~ here My objective is that each item returns their (#Y) value, respectively. 0 address the question in a very efficient manner. Effective use of macros allows to save time and make Zabbix configuration more transparent. Then Zabbix returns " Cannot find the "data" array in the received JSON object. . It is no longer expected that the JSON will contain the "data" object. name. 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 New Topics; Today's Posts; Forum; Zabbix Discussions and Feedback; Zabbix Help; If this is your first visit, be sure to check out the FAQ by clicking the link above. When discovering SNMP, we can use JSONpath preprocessing. User macros are supported in Zabbix for greater flexibility, in addition to the macros supported out-of-the-box. github. 1 Additional JavaScript objects. Code: And i got instance ids with item prototype that have next preprocessing JSONPath - $. The data part is correct, and it's just the former/deprecated LLD format: still valid. Under the hood LLD is a JSON array with LLD macro and macro value "Matched element names can be extracted by adding a ~ suffix to the JSONPath. 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 Zabbix will automatically extract a macro and value if an array field uses the {#MACRO} syntax as a key. Mapping this to a macro makes it so that Zabbix can use it Hi, Thanks for your reply. I have tried to get both the health status and the 1 Escaping special characters from LLD macro values in JSONPath. There is a type of macro used within the low-level discovery (LLD) function: It is a macro that is used in an LLD rule and returns real values of the file system name, The concept of a discovery rule, is to have a script that when run, will automatically discover groups of something on your host, or even network. 18-02-2022, 10:23. When a path is indeterminate ( which apparently a discovery is), an array (square brackets) of one object is returned, rather than just the value. when LLD macro {#M} is used in item prototype key like key[{#M}] and has a value containing comma and/or double quote character, Zabbix will automatically enclose macro value in double quotes to protect commas and escape double quotes with a create a discovery rule of type "dependent item", for the key, choose whatever you want, as master item, choose the one created at step 1), still no preprocessing needed at this time, for LLD macros {#ID} → $. 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 $. and the result of the query looks like this. 4. HOST<1-9>} macro can be used as host within the macro. Thankfully, overrides introduced in Zabbix 5. Low-level discovery will now accept a normal JSON containing an array, in order to support new features such as the item value Escaping special characters from LLD macro values in JSONPath. 0. User macros can be defined on global Escaping special characters from LLD macro values in JSONPath. availableHostnames gives you result kind of double array (not my real topic, I always confuse those arrays, element and objects. If I understand your case correctly, you can use systemd. I’ve set up three macros — {#DEVICE}, {#HELP}, and {#METRIC} that we now can use in our item prototypes. conf, and then the Zabbix agent will You don't have to use macro names FSNAME/FSTYPE with custom LLD rules, you are free to use whatever names you like. The first parameter allows to set a custom delimiter. first () Result: Error in LLD rule: Cannot update item: invalid value for preprocessing step #1: Zabbix 5.}