bin/plugin list. Log Aggregation with Log4j, Spring, and Logstash. As of FYQ4 2019 all non-kafka logstash inputs have been deprecated, and work is under way to remove them. Inputs are data sources such as log files (/var/log/*. Nov 27, 2016 elk logstash elastic parsing data Structuring data with Logstash. For example. As a developer working with SQL Server there was a need to import data from the database to Elasticsearch and analyze data in Kibana. GELF is an UDP-based protocol, but you need additional jars. Increase the Output Workers. How can I control multiple inputs in logstash or how will it work in ELK stack?. Logstash File Input. So I have a logstash that has two separate inputs and two separate outputs However for some reason the data from one of the inp. Logstash is an open source log management tool that is most often used as part of the ELK stack along with ElasticSearch and Kibana. Here Coding compiler sharing a list of 20 Logstash questions. In this article, we continue our journey into. When I start learning something new I set a bunch of small, achievable objectives. conf' and set up our "lumberjack" input which is the tcp protocol listening to port '5043' that Logstash. To test, we simply input anything on the console, seeing that our message is displayed back by the tool:. devops • elasticsearch • java • kibana • log4j • logstash • maven • monitoring • operations • software • Spring. Overview Multi-Link is a unique feature for McAfee NGFW. I also ran into a few surprises… The input file contains lines of text; I'm interested in grabbing names from lines which. The config specifies the TCP port number on which Logstash listens for JSON Lines input. Chances are you have multiple config files that are being loaded. Logstash works based on data access and delivery plugins. As in some of the other Logstash inputs, a single line is interpreted as a single event in logstash. A codec is attached to an input and a filter can process events from multiple inputs. Logstash comes with a NetFlow codec that can be used as input or output in Logstash as explained in the Logstash documentation. Consolidating Logs with Logstash When something goes wrong on a system, the logfile is the first place to look for troubleshooting clues. There are three types of supported outputs in Logstash, which are −. For Logstash output, I am going to be using Elastcisearch. yml) for harvesting different log files on. 6] » Getting Started with Logstash » Stitching Together Multiple Input and Output Plugins « Parsing Logs with Logstash How Logstash Works » Stitching Together Multiple Input and Output Plugins edit. # basic scheme input {} filter {} output {} Use input directory: Instead of one config file, you can split each section(s) into separate files. LogStash is a good solution if you want to handle multiple log sources or you want to validate/manipulate your log messages or you want to distribute logs to multiple destinations. It transforms the data and sends to the Elasticsearch database. For a dashboard. Pitfall#1. Logstash will also use the date part of the @timestamp to create an ElasticSearch index. In this case, I have added the stdout output for seeing the output in the console. · Logstash provides multiple plugins to parse and transform the logging data into any user desirable format. The config specifies the TCP port number on which Logstash listens for JSON Lines input. Input section defines from where Logstash will read input data - in our case it will be a file hence we will use a file plugin with multiline codec, which basically means that our input file may have multiple lines per log entry. Inputs are Logstash plugins responsible for ingesting data. I keep using the FileBeat -> Logstash -> Elasticsearch <- Kibana, this time everything updated to 6. This solution focuses on the Logstash component of the Elastic Stack because Logstash is the most flexible option for working with logs exported from Logging. ymlを渡しているのは、logstashからモニタリング用のElasticsearchサーバにデータを送るのですが、 この接続文字列が含まれているからです。 Pipelineができることで、こんなメリットがあると思います。 Logstashの設定ファイルの簡素化!. What is Logstash? Logstash is the data collection pipeline tool. This article walks you through how to deploy Elasticsearch, Logstash, and Kibana, on an Ubuntu VM in Azure. If the field isn't present or not populated, it won't update the event. This recipe also appears to work for the 1. Just be aware that this way you have to run Java on all your servers to run logstash. # basic scheme input {} filter {} output {} Use input directory: Instead of one config file, you can split each section(s) into separate files. Logstash has a three-stage pipeline implemented in JRuby: The input stage plugins extract data. Multiple configuration files for LogStash April 17, 2014 May 29, 2014 Graham Hay If you have multiple applications running on a box with the logstash client, you probably want to split the config file up a bit. If you want to aggregate logs from multiple CF apps, you have to bind those multiple apps into a single logstash instance. To read more on Logstash Configuration,Input Plugins, Filter Plugins. Etsy's Logstash Plugins. Learning ELK Stack: Build mesmerizing visualizations, analytics, and logs from your data using Elasticsearch, Logstash, and Kibana [Saurabh Chhajed] on Amazon. Inputs, Filters and Outputs are all used by Logstash to process incoming log data and do something with it, which normally is to store it in the Elasticsearch database. Mapping SinceDB Files to Logstash File Input. Menu Importing IIS logs into Elasticsearch with Logstash 18 March 2016 on logstash, iis, elasticsearch. Logstash, a log server with built-in analysis tools, consolidates logs from many servers and even makes the data searchable. The output events of logs can be sent to an output file, standard output or. On top of Elasticsearch, I am using going to be using Kibana to display these metrics. Caveats with Logstash udp input type and event splitting. Logstash comes with a NetFlow codec that can be used as input or output in Logstash as explained in the Logstash documentation. As volume we will mount the logstash. Logstash is incredibly flexible with many input and output plugins whereas fluentd provides fewer input and output sources but provides multiple options for reliably and robust transport. Many might have faced this problem while using Logstash to process same log file from the beginning. Logstash ships with many input, codec, filter, and output plugins that can be used to retrieve, transform, filter, and send logs and events from various applications, servers, and network channels. If you would like # to join multiple log lines into one event, you'll want to use the # multiline codec. Let’s create a configuration file called ’01-lumberjack-input. Logs should not be sent directly from the application to logstash. dpkg -i logstash. Filebeat vs. 0 will feature a JSON export for all logging subsystem. What is Logstash? In case you don't know what Logstash is all about, it is an event processing engine developed by the company behind Elasticsearch, Kibana, and more. The first part of your configuration file would be about your inputs. I am working on extending my existing Elastic Stack to include logs. multiple inputs on logstash jdbc. A tool to collect, process, and forward events and log messages. /data/elk/logstash-6. Fluentd plugins for the Stackdriver Logging API, which will make logs viewable in the Stackdriver Logs Viewer and can optionally store them in Google Cloud Storage and/or BigQuery. Nagios Log Server vs. Logstash Interview Questions And Answers 2020. It collects clients logs and do the analysis. The PCF Log Search tile provides tags to standardize the data it receives from multiple tiles. The last thing is to tell Logstash where to stream the data. In addition, multiple queues are supported. 29 Dec 2015. The problem is that when you kill/stop a Logstash (file input) process and start it again, the process will continue from where Logstash left previously. Indeed the Logstash community has talked about removing it repeatedly over the last couple of years. Well at first glance, the syslog input is a pretty blunt instrument. Hi, I am using version 1. Here Logstash is configured to listen for incoming Beats connections on port 5044. In logstash 1. Menu Importing IIS logs into Elasticsearch with Logstash 18 March 2016 on logstash, iis, elasticsearch. Install the Elastic Stack on an Azure VM. The Logstash Filter subsections will include a filter that can can be added to a new file, between the input and output configuration files, in /etc/logstash/conf. This is the last of three posts about Elastic Stack. From my tests, it finally works in logstash 2. In this blog post, we have demonstrated how to use Logstash to create multiple copies of an input stream, to then modify documents in each stream as required for different outputs, and to then drive the different streams into different outputs. So I wrote Logstash Test Runner: An opinionated testing framework to help with testing Logstash configurations. Input Section. One of the easiest to use entry format is JSON. For this blog, I use logstash 1. Logstash Grok, JSON Filter and JSON Input performance comparison As part of the VRR strategy altogether, I've performed a little experiment to compare performance for different configurations. Heinlein, Stranger in a Strange Land. E: Elasticsearch stores data java 50: Logstash collection, filtering, forwarding, matching, large, slow start, middle role java K: Kibana filtering, analysis, graphic presentation java F: Filebeat collects logs and filters go. 1 sysutils =4 2. After that, we are going to write the input and output. I have included multiple inputs and outputs in my logstash conf file (without filter for now). Logs should always flow through rsyslog. We use gelf and nxlog inputs for receiving logs from different applications. gethostname # Stream events from files. There is no file path. Hi, My setup: Two Windows boxes; one is for Elasticsearch and Kibana, and other is for Logstash. These plugins help the user to capture logs from various sources like Web Servers, Databases, Over Network Protocols, etc. conf 10-filter-one. It uses the high level consumer API provided # by Kafka to read messages from the broker. Indeed the Logstash community has talked about removing it repeatedly over the last couple of years. An alternative approach to this is using redis as a message broker, with logstash running on both the source (sending output to redis) and ELK server (using redis as the input). log) or data stored in a S3 bucket, RabbitMQ, redis, etc. Inputs are data sources such as log files (/var/log/*. 2 The date filter sets the value of the Logstash @timestamp field to the value of the time field in the JSON Lines input. The first part of your configuration file would be about your inputs. This is the last of three posts about Elastic Stack. Don't try that yet. Consolidating Logs with Logstash When something goes wrong on a system, the logfile is the first place to look for troubleshooting clues. Even if one instance can be initiated with two specific configuration files, all logs take the same channel and are being applied the same. Inputs: read and parse data. You must provide the following four variables when creating a Coralogix logger instance. By default, the sincedb file is placed in the home directory of the user running Logstash with a filename based on the filename patterns being watched (i. Logstash is a log processor. It's easy to make both syntax and logical errors. The stdin is a fairly simple plugin, which reads the data from a standard input. Ingest Node, as part of the ES index document, does not have a data buffer policy. To set up Logstash as a TCP server all you need to specify is the port to listen on:. Inputs are the starting point of any configuration. Filters are optional. Download latest NSSM from its download page, unzip it into a folder, e. This makes it possible to reply whole logs and avoid duplicate entires in Elasticsearch. While parsing raw log files is a fine way for Logstash to ingest data, there are several other methods to ship the same information to Logstash. If you do not define an input, Logstash will automatically create a stdin input. Input section defines from where Logstash will read input data - in our case it will be a file hence we will use a file plugin with multiline codec, which basically means that our input file may have multiple lines per log entry. Let’s create a configuration file called ’01-lumberjack-input. 5 on an Ubuntu 12. In this guide I will provide an example of how to set up a Logstash server with a Kibana interface that does get the logs from rsyslog. d directory of container running logstash. Elasticsearch – Logstash – Kibana By Scott Wilkerson on October 19, 2014 Recently I was asked the following questions via email and thought it would make a great post to explain the differences between deploying Nagios Log Server or just the Elasticsearch, Logstash, Kibana Stack (ELK). The rubydebug codec will output our Logstash event data using the ruby-awesome-print library. **Note** The configuration used for this walkthrough is based on the initial setup walk-through from How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14. Input codecs provide a convenient way to decode your data before it enters the input. It shows that not only can the module parse and create CSV formatted input and output, but using multiple xm_csv modules it is possible to reorder, add, remove or modify fields and output these in a different CSV format. My current setup is a pretty common Logstash stack. By Jon Jensen November 22, 2017 The Elastic stack is a nice toolkit for collecting, transporting, transforming, aggregating, searching, and reporting on log data from many sources. Logstash works based on data access and delivery plugins. Ask Question Asked 3 years, 6 months ago. In Logstash, since the configured Config becomes effective as a whole, it becomes a single output setting with a simple setting. More on the subject: 5 Logstash Filter Plugins You Need to Know About If you configure Logstash to run multiple filter threads, there is a good chance that the Multi-Line filter will. Kibana Okta - lkyo. Use logstash to collect and distribute audit events from webhook backend. To set up Logstash as a TCP server all you need to specify is the port to listen on:. the `path` option). 1 using Docker. Now with the this mounted directory /data/logstash has only the syslgo. An alternative approach to this is using redis as a message broker, with logstash running on both the source (sending output to redis) and ELK server (using redis as the input). deb sudo service logstash restart / stop / status. The output events of logs can be sent to an output file, standard output or a search engine like Elasticsearch. We provide Docker images for all the products in our stack, and we consider them a first-class distribution format. Logstash works based on data access and delivery plugins. This is done by combining multiple ISP to create a single route for all network traffic. In this blog post we demonstrate how Logstash can be used to accomplish the following tasks: Create multiple copies of an input stream. Logstash Grok filter getting multiple values per match. Use the Logstash's filters to break it up into more fields or combine multiple lines into one. The filter determine how the Logstash server parses the relevant log files. But we will focus on parts of it… Logstash is essentially split up into 3 sections… Input, filter and output. Logstash Filters. To read more on Logstash Configuration,Input Plugins, Filter Plugins. Introduction. Chances are you have multiple config files that are being loaded. I also ran into a few surprises… The input file contains lines of text; I'm interested in grabbing names from lines which. Port 12201 is exposed and mapped on the server. By default, the sincedb file is placed in the home directory of the user running Logstash with a filename based on the filename patterns being watched (i. Other Docker containers will send their logs to Logstash by connecting to this UDP port. 5 Logstash Pitfalls You Need to Avoid. These plugins help the user to capture logs from various sources like Web Servers, Databases, Over Network Protocols, etc. - Are you sure that 443 is the correct port that your logstash server is listening on, can you change that to something else and try ? - Do you have any firewall settings on the server hosting logstash, which may be preventing Apigee instances to talk to the logstash server ?. It is used to separate the transport of message form serialization process. We make use of the file input, CSV filter, and Elasticsearch output components of Logstash. 1 sysutils =4 2. If i comment out one file input it works fine and picks up line change. 0, with the new Multiple Pipelines feature! Multiple Pipelines. As in some of the other Logstash inputs, a single line is interpreted as a single event in logstash. 2 Logstash seems stable with with a single SQS input but hangs after a short time if I add a two or more to my config. d/ configuration directory, or in separate config files (depending on your setup) e. Based on the generic design introduced in this article last time, …. The filter determine how the Logstash server parses the relevant log files. conf" with the extension ". In this example, we will use logstash to collect audit events from webhook backend, and save events of different users into different files. Increase the Output Workers. Let's create a configuration file called '01-lumberjack-input. The problem is that when you kill/stop a Logstash (file input) process and start it again, the process will continue from where Logstash left previously. A simple pipeline configuration file can be looked like following: input { stdin {}} output { stdout {}} This config only defines input and output components, because filter is a optional component. Each queue-server would have such a receiving Logstash-instance. Logstash has the ability to parse a log file and merge multiple log lines into a single event. Introduction. Logstash ships with many input, codec, filter, and output plugins that can be used to retrieve, transform, filter, and send logs and events from various applications, servers, and network channels. bin/plugin list. input file is used as Logstash will read logs this time from logging files; path is set to our logging directory and all files with. # encoding: utf-8 require " logstash/inputs/base " require " logstash/namespace " require " pathname " require " socket " # for Socket. org/2020/01/12/lenovo-thinkpad-t470p-camera-problem-windows-10. The filter determine how the Logstash server parses the relevant log files. The entire integration process of MS SQL and Elasticsearch along with Data-collection and log-parsing engine – Logstash, analytics and visualization platform – Kibana is described here in five simple steps. Since the Documentation for logstash is new, you may need to create initial versions of those related topics. You can also give multiple output adapters for streaming to different outputs. In case your input stream is a JSON object, you can extract APP_NAME and/or SUB_SYSTEM from the JSON using the $ sign. Indeed the Logstash community has talked about removing it repeatedly over the last couple of years. The first key (config_params) is mandatory while the other two are optional. Logstash can use static configuration files. Inputs are commonly log files,. conf 20-ou Stack Exchange Network is there a way to view the complete running config when using multiple config files in /etc/logstash/conf. Logstash recipe – MySQL slow log I’ll describe here how to use logstash and logstash-forwarder to harvest the mysql slow log on a database server so you can centralize it in elasticsearch and kibana. I have 3 files with 3 lines each one of them. Let’s create a configuration file called ’01-lumberjack-input. The first section in a logstash configuration is the "input" section. Inputs generate events, filters modify them, and outputs ship them elsewhere. Since we (SRE) will be working on T205849: Begin the implementation of Q1's Logging Infrastructure design (2018-19 Q2 Goal) this quarter, making the current Logstash inputs more resilient to sudden spikes isn't an immediate priority. Install the Elastic Stack on an Azure VM. Inputs: read and parse data. E: Elasticsearch stores data java 50: Logstash collection, filtering, forwarding, matching, large, slow start, middle role java K: Kibana filtering, analysis, graphic presentation java F: Filebeat collects logs and filters go. The holy trinity of Elasticsearch, Logstash, and Kibana (ELK) are a powerful trio of tools for data discovery and systems diagnostics. In case your input stream is a JSON object and you don't want to send the entire JSON, rather just a portion of it, you can write the value of the key you want to send in the log_key_name. The ELK Stack consists of three open-source products - Elasticsearch, Logstash, and Kibana from Elastic. It is not meant to be directly inherited by user-defined classes (for that, use Exception ). Logstash depends on Elasticsearch which needs to be deployed first. It is sadly empty, so we should feed it some logs. And now I can view log in one place in my Kibana interface:. Given the trend around microservices, it has become mandatory to be able to follow a transaction across multiple microservices. A tool to collect, process, and forward events and log messages. Filter each unique copy of the input stream to only contain desired fields. Logstash , JDBC Input Plug-in work like a adapter to send your database detail to Elasticsearch so that utilize for full text search, query, analysis and show in form of Charts and Dashboard to Kibana. Introduction. Logstash configurations are separated into three different sections: input, filter, and output. It transforms the data and sends to the Elasticsearch database. One of the objectives I'd written was to have a fully functional, operating Logstash pipeline running in Kubernetes, ingesting data from somewhere, perform some action on it and then send it to ElasticSearch. Log Aggregation with Log4j, Spring, and Logstash. This can be from logfiles, a TCP or UDP listener, one of several protocol-specific plugins such as syslog or IRC, or even queuing systems such as Redis, AQMP, or Kafka. config and pipeline2. It is used to separate the transport of message form serialization process. Logstash collects logs and events from various sources like HDFS, MySql, logs (system logs, application logs, network logs), twitter etc and. Inputs are commonly log files,. is anyone using this with logstash input plugin for kibana and logstash codec avro? I've seen the JavaDoc example with java tcp consumer, but i'm trying to make this work with default divolte schema and would like to avoid maintaining one more service. If you continue browsing the site, you agree to the use of cookies on this website. # basic scheme input {} filter {} output {} Use input directory: Instead of one config file, you can split each section(s) into separate files. One workaround would be to have another simple Logstash instance on the Redis node that does no processing and just receives logs to foreward them into Redis. Inputs generate events, filters modify them, and outputs ship them elsewhere. my_path => "/tmp/logstash" Codec. As I alluded to in the last post, Logstash itself can be too large to run on your micro cloud instances. Therefore, it is possible to set multiple outputs by conditionally branching according to items with if. Filter each unique copy of the input stream to only contain desired fields. We can transform the data before sending it to the output. The log4j input is a listener on a TCP socket. Logstash, a log server with built-in analysis tools, consolidates logs from many servers and even makes the data searchable. Things to check: Logstash service is running Logstash listening port is correct Logstash listening interface is correct Logstash is allowed through machine firewall. Indeed the Logstash community has talked about removing it repeatedly over the last couple of years. Sign in Sign up Instantly share code, notes, and snippets. Etsy's Logstash Plugins. Pushing Relational Data to Elasticsearch using Logstash JDBC input plugin. On top of Elasticsearch, I am using going to be using Kibana to…. Logstash recipe – MySQL slow log I’ll describe here how to use logstash and logstash-forwarder to harvest the mysql slow log on a database server so you can centralize it in elasticsearch and kibana. It fetches events from the. Every single event comes in and goes through the same filter logic and eventually is output to the same endpoint. Logstash is used as a data processing pipeline that aims at simplifying log ingestion, parsing, filtering and redirecting. As in some of the other Logstash inputs, a single line is interpreted as a single event in logstash. If you have multiple output you won't know in the filter and output where you data come from as you don't have a notion of pipeline in logstash. 2 The date filter sets the value of the Logstash @timestamp field to the value of the time field in the JSON Lines input. Why do we use Logstash? We use Logstash because Logstash provides a set of plugins that can easily be bound to various targets in order to gather logs from them. Logstash is often used as a key part of the ELK stack or Elastic Stack, so it offers a strong synergy with these technologies. You can definitely have a single config with multiple jdbc input and then parametrize the index and document_type in your elasticsearch output depending on which table the event is coming from. Centralized logging system based on Logstash-forwarder+Logstash+RabbitMQ+ElasticSearch+Kibana Why you need centralised logging system When you encountered a large system serving millions of users, things can not be done using only. I encounter a bug when using the file input with multiple files, with using globs or with an array of files. From RabbitMQ I can have multiple Logstash indexers slurp from RabbitMQ, apply filtering, and output to Elasticsearch, on to further processing, etc. Filebeat can be configured to consume any number of logs and ship them to Elasticsearch, Logstash, or several other output channels. I am running logstash 1. An active Logstash input; The short version. Logstash can gather logs from different OS, so I installed nxlog on each Windows machine in my infrastructure. A simple Logstash config has a skeleton that looks something like this: input {# Your input config} filter {# Your filter logic} output {# Your output config}. The date filter parses dates using formats as defined by the Joda Time library. Together, they build a Logstash Processing Pipeline. $ bin/logstash_plugin install logstash-input-beats Scaling Logstash: One of the great things about Logstash is that it is made up of easy to fit together components: Logstash itself, Redis as a broker, Elasticsearch and the various other pluggable elements of your Logstash configuration. Centralized logging system based on Logstash-forwarder+Logstash+RabbitMQ+ElasticSearch+Kibana Why you need centralised logging system When you encountered a large system serving millions of users, things can not be done using only. 29 Dec 2015. conf 10-filter-one. I had to restart the logstash service on the nagios log servers to make it work again. Logstash is the powerhouse behind our enrichment setup… Since you should already hopefully be familiar with the ELK stack, we won't touch too much on Logstash and how it is working. It helps organization reduce cost from buying large bandwidth from ISP. Create a directory /data/logstash in host and create a syslog. log) or data stored in a S3 bucket, RabbitMQ, redis, etc. Input codecs are a convenient method for decoding your data before it enters the input, without needing a separate filter in your Logstash pipeline. Once an input plugin has collected data it can be processed by any number of filters which modify and annotate the event data. There are a lot of options around this input, and the full documentation can be found here. Logstash ships with many input, codec, filter, and output plugins that can be used to retrieve, transform, filter, and send logs and events from various applications, servers, and network channels. A port less than 1024 would require Logstash to be. Filebeat agent will be installed on the server. If you look at the output, specifically the elapsed_time shows up as both an integer and a string. Create a directory /data/logstash in host and create a syslog. 1 and I have multiple config files in my /etc/logstash/conf. Multiple configuration files for LogStash April 17, 2014 May 29, 2014 Graham Hay If you have multiple applications running on a box with the logstash client, you probably want to split the config file up a bit. 3 version of logstash. A simple Logstash config has a skeleton that looks something like this: input {# Your input config} filter {# Your filter logic} output {# Your output config}. d on the Logstash Server. While it started as a regular syslogd, rsyslog has evolved into a kind of swiss army knife of logging, being able to accept inputs from a wide variety of sources, transform them, and output to the results to diverse destinations. file: reads from a file on the filesystem, much like the UNIX command "tail -0a" redis: reads from a redis server, using both redis channels and also redis lists. Basic architecture diagram. Chapter 1: Getting started with logstash Remarks This section provides an overview of what logstash is, and why a developer might want to use it. LOGSTASH-1615. There are multiple log formats, there's no easy way to search logs, and no easy method to gather statistics. Centralized logging system based on Logstash-forwarder+Logstash+RabbitMQ+ElasticSearch+Kibana Why you need centralised logging system When you encountered a large system serving millions of users, things can not be done using only. Filebeat side is also configured to run on the correct ports. It is using elasticsearch for the storage and has a really nice interface named Kibana. Multiple pipelines can be defined in this file e. In this example, we will use logstash to collect audit events from webhook backend, and save events of different users into different files. If the field isn't present or not populated, it won't update the event. d’ directory in the JSON-format which consists of three sections that is inputs, filters, and outputs. By default, the sincedb file is placed in the home directory of the user running Logstash with a filename based on the filename patterns being watched (i. On your ELK server, add the following input & filter to your logstash. Ah, just like others, logstash has input/filter/output plugins. When dealing with log scaling and analytics in Logstash, you’ll encounter a number of problems. Logstash configuration files reside in '/etc/logstash/conf. As input you provide those lines to match and select the libraries of grok patterns you want to choose from, and possibly give additional patterns. The stdin is a fairly simple plugin, which reads the data from a standard input. It is important to specify an. d' directory in the JSON-format which consists of three sections that is inputs, filters, and outputs. conf file in the /etc/logstash/conf. conf 02-input-source-two.