LogHub | Loghub is a pipeline log , close to logstash
kandi X-RAY | LogHub Summary
kandi X-RAY | LogHub Summary
Loghub is a pipeline log, close to logstash. But it's written in java for improved stability and performance. It received events from external sources, process them and send them. All components are organized in many pipeline that can be interconnect. A pipeline goes from one receiver source that generate events, send through processor and forward them to a sender or another pipeline. Receiver source uses decoders that takes bytes messages and generate a event from that. Sender source uses decoders that take event and produce bytes message that are then send to the configured destination. All of these five kind of operator (Receivers, Senders, Processors, Coders and Decoders) are java classes that can be derived for custom usages. For configuration it uses a DSL generated using antlr. It's syntax is a strange mix of logstash configuration files, java and a small tast of groovy. The exact grammar can be found at This configuration define two receivers, one that listen using 0MQ for log4j events. The other listen for msgpack encoded events on a udp port, like some that can be generated by mod_log_net. The events received on UDP are send to one pipeline called "apache". All the events are transfered to the default "main" pipeline after resolving location from visitors. The log4j events are directly send to the main pipeline, that does some magic treatment on it. Pay attention to the test. It will be evaluated as a groovy scripts. A property called "extensions" is defined. It allows to define custom extensions folders that will be used to resolve scripts and added to the class path. In the configuration file, all the agent are defined using directly the class name. If needed, slow or CPU bound processor can be given more dedicated threads by specifying a specific number of threads. They will be still one processor class instance, but many threads will send events to it.
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Top functions reviewed by kandi - BETA
- Main thread loop
- Process an event
- Format the given argument
- Evaluates an event
- Implementation of the field function
- Get the bytes as a byte array
- Get field function
- Parse an IP address
- Attempt to resolve the given format string
- Calculate number format
- Process event
- Process a Pdu response
- Get the escaped expression
- Sends a batch to ES
- Main loop
- Handles a request
- Translates an IP address
- Parse a string literal from a string literal
- Resolves a bean type
- This method processes the incoming request
- Configures this script
- Checks the validity of a keystore
- Main entry point
- Gets the terminal state
- Extract the principal from the client
- Invokes the method on the given object
LogHub Key Features
LogHub Examples and Code Snippets
Community Discussions
Trending Discussions on LogHub
QUESTION
Fluentd Experts and Users!
Currently we have met an issue in using Fluentd to parse json format log. Fluentd does not automatically add the current system time to the parsing result, although I have configured time_key and keep_time_key according to the documentation.
The example of our log is,
{"host": "204.48.112.175", "user-identifier": "-", "method": "POST", "request": "/synthesize/initiatives/integrated", "protocol": "HTTP/2.0", "status": 502, "bytes": 10272}
and you can see that there is no time field in it.
But there is no system current time in the parsed log output (the output is in stdout (debug mode) ):
...ANSWER
Answered 2022-Apr-10 at 03:55QUESTION
Appreciation for any answers!
I created a signalr backend server based on .net core 3.1 running on docker(debian). It works well when i only create single server deployment on kubernetes. But when i increase replicas to more than 1 ,it works incorrectly. It looks like the redis backplane not working ,and leads to unreachable communication between multiple servers .
Following the official documention,i installed nuget package:
...ANSWER
Answered 2021-Mar-18 at 07:06Okay,all is my fault.After carefully read the official documention again ,i found out the reason .I ignored the last one point:
Configure your server farm load balancing software for sticky sessions.
The solution for my situation is to configure nginx ingress to enable Sticky Session,like this:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install LogHub
You can use LogHub like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the LogHub component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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