Repository for creating 3 Docker containers:
- 1 web with Nginx serving static content
- 1 log_agent with Rsyslog receiving Nginx logs from web and forwarding logs further to log_server
- 1 log_server with Rsyslog storing logs to host machine
Requirements:
- docker
- docker-compose
Usage:
cd rsyslog/
docker-compose up
This will create 3 containers:
- rsyslog_web_1
- rsyslog_log_agent_1
- rsyslog_log_server_1
Static web content (./nginx/html/) is available on port 80, logs from web are forwarded by nginx.conf configuration to log_agent on port 515, and then forwarded to log_server on port 514. Nginx logs are available on host machine under ./log_server/nginx/nginx.log.
Logs are sent with local0 facility and only local0 logs are forwarded by log_agent to log_server.
Log_server address is in log_agent/rsyslog.conf, in case you need to change it - edit the file and run docker-compose restart log_agent.
If you need another web container, copy the web service configuration in docker-compose.yml and update host port. Also it is possible to change ports directive to expose and add some proxy to be able to use scale functionality of docker-compose.
Tested on CentOS 7.4, Docker 17.09.0-ce, docker-compose 1.17.1.