Ahmad Haghighi haghighi

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

Overview

This is a solution of a common problem with Nexus Docker repositories. The administrator has to expose port for "pull", another port for "push", other ports for each hosted repository. This solution is about leveraging Nginx reverse proxy to avoid using these ports.

How it works ?

Given :

Nexus hostname is "nexus.example.com"
Nexus web port is 8081

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

People

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	user web;

	# One worker process per CPU core.
	worker_processes 8;

	# Also set
	# /etc/security/limits.conf
	# web soft nofile 65535
	# web hard nofile 65535
	# /etc/default/nginx

	#!/bin/bash
	#
	# Ansible role test shim.
	#
	# Usage: [OPTIONS] ./tests/test.sh
	# - distro: a supported Docker distro version (default = "centos7")
	# - playbook: a playbook in the tests directory (default = "test.yml")
	# - role_dir: the directory where the role exists (default = $PWD)
	# - cleanup: whether to remove the Docker container (default = true)
	# - container_id: the --name to set for the container (default = timestamp)

	#!/usr/bin/env bash
	#
	# Modified version of http://superuser.com/a/224263
	#
	# You should make sure you have an OpenSSL 1.0.1+ installed. (Mac OS X? Use homebrew.
	# This script automatically hooks into homebrew's installation of 1.0.1e, see line 22.)
	#
	#######
	#
	# usage:

	- state: `curl -XGET localhost:9200/_cluster/state?pretty=true`
	- alias: `curl -XGET localhost:9200/_aliases?pretty`
	- mapping: `curl -XGET http://localhost:9200/_mappings`
	- settings: `curl -XGET localhost:9200/_settings?pretty`
	- index に接続: `curl -XGET localhost:9200/index`
	- スキーマ確認: `curl -XGET localhost:9200/index/_mappings?pretty`
	- 表示: `curl -XGET localhost:9200/index/_search?pretty' -d '{"query": {"match_all" : {}}}`
	- 全ての index を表示: `curl -XGET localhost:9200/_cat/indices?v`

	#!/usr/bin/env python

	import argparse
	import logging
	import logging.handlers

	parser = argparse.ArgumentParser(__file__,
	description="A syslog message generator")

	parser.add_argument("--address",