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Overview

startalk needs to start some http/https based services that are supported through an interface provided by the open source software openresty. This project describes how to install and configure openresty for startalk.

Terminology and defaults

  • All web-related software is installed under ${STARTALK_OPENRESTY}, the default is the /usr/local/openresty directory.
  • The default installation user and user group is: startalk:startalk, which may require the system startalk user to have sudo privileges, or users familiar with the system can use their own normal user, such as nobody
  • startalk user has a download folder in his home directory, all source code and configuration files will be downloaded to this folder
  • The initial password for the database user name is ejabberd:123456 and the default address of the database server is 127.0.0.1 Please change it yourself
  • redis initial password is: 123456, the service address is: 127.0.0.1 Please change it yourself

Description of each directory in this project

  • conf: the main configuration file of openresty used by startalk
  • startalk_lua : some lua code used by startalk's openresty, used to make dynamic changes to requests
  • tools: some tools for testing

startalk or services

Startalk has some built-in or (running lua-jit) services for IM http request load balancing, see ejabberd for the full architecture

Install openresty

Set Openresty location, take /usr/local/openresty as example

$ export STARTALK_OPENRESTY=/usr/local/openresty

Create a new installation directory

$ sudo mkdir -p ${STARTALK_OPENRESTY}

Compile and install openresty

This step is to install the openresty software, download the software as a startalk user and compile and install it, if the system already has openresty packages (rpm, deb, etc.), you can ignore this step.

However, you should pay attention to openresty startup user and default installation location, most of the default installation package openresty configuration file is in /usr/local/openresty/nginx/conf/nginx.conf.

Please note that the following ${STARTALK_OPENRESTY} variable is set or replaced with the default above. Do not build your own openresty if you are no familiare with Linux and/or open source software. We strongly recommend to use prebuild openresty package on OpenResty Web Site instead. Please omit the rest info in this section if you've installed openresty via prebuild package.

$ cd /home/startalk/download
$ wget https://openresty.org/download/openresty-1.13.6.2.tar.gz
$ tar -zxvf openresty-1.13.6.2.tar.gz
$ . /configure --prefix=${STARTALK_OPENRESTY}
$ make
$ sudo make install

Install startalk or service

$ cd /home/startalk/download
$ git clone https://github.com/startalkIM/openresty_ng.git
$ cd openresty_ng
$ sudo cp -rf conf ${STARTALK_OPENRESTY}/nginx
$ sudo cp -rf startalk_lua ${STARTALK_OPENRESTY}/nginx

Please note that the contents of ${STARTALK_OPENRESTY}/nginx/conf/startalk-nginx.conf-sample are modified to ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf. If you are completely lazy, overwrite ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf with the project's conf/startalk-nginx.conf-sample file.

$ sudo cp -rf conf/startalk-nginx.conf-sample ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf

Please note that you must know what you are doing before you execute this command above.

Configure Openresty

or service configuration changes

configuration of location

${STARTALK_OPENRESTY}/nginx/conf/conf.d/startalk/or.server.location.package.qtapi.conf

upstream configuration

${STARTALK_OPENRESTY}/nginx/conf/conf.d/startalkupstream/st.upstream.conf

redis connection address configuration

${STARTALK_OPENRESTY}/nginx/startalk_lua/checks/qim/startalkredis.lua

or operations

Be careful we use -p parameter to coordinate with lua_package_path in nginx.conf.sample.

Start:

$ sudo ${STARTALK_OPENRESTY}/nginx/sbin/nginx -p ${STARTALK_OPENRESTY}/nginx -c ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf

Stop:

$ sudo ${STARTALK_OPENRESTY}/nginx/sbin/nginx -p ${STARTALK_OPENRESTY}/nginx -c ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf -s stop

reload:

$ sudo ${STARTALK_OPENRESTY}/nginx/sbin/nginx -p ${STARTALK_OPENRESTY}/nginx -c ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf -s reload

or upgrade

$ cd openresty_ng
$ git pull
$ sudo cp -rf conf ${STARTALK_OPENRESTY}/nginx
$ sudo cp -rf startalk_lua ${STARTALK_OPENRESTY}/nginx
$ sudo ${STARTALK_OPENRESTY}/nginx/sbin/nginx -p ${STARTALK_OPENRESTY}/nginx -c ${STARTALK_OPENRESTY}/nginx/conf/nginx.conf -s reload