VMmanager structure

VMmanager has three docker containers:

• vm_box — the main container with the services for the platform, such as the user authorization service or the web server;
• graphite — the container with the VM and cluster node usage statistics;
• mysql — the container for the database management system MySQL;
• vm_ipmgr_1 — IPmanager service container;
• plugin — plugins container;
• registrator — the container for dynamic creation of new containers for nginx;
• consul — the container for Consul service detection system. Read more about Consul in the official documentation;
• grafana — grafana monitoring visualization container;
• vm_dns_proxy_1 — PowerDNS integration plugin container;
• alert — container for platform notifications settings service;

• scheduler — container for VMs backup schedule.

Container management

To view the list of running containers connect to the server with VMmanager via SSH and enter:

docker ps

To go to the container, enter:

docker exec -it containerID bash

Services of the vm_box containers

Services

The main services of the vm_box container: 

• supervisord — the service management system. It restarts the services automatically when they fail. For more information please refer to the official documentation; 
• consul — the service discovery system. Learn more in the official documentation;
• nginx — the webserver for displaying the web interface; 
• novnc — this service supports VNC of virtual machines; 
• vm6 — this service supports the operation of VMmanager;
• ip — manages IP addresses of virtual machines;
• msgsender — sends emails to VMmanager users. E.g., after the virtual machine is successfully created or the operating system is reinstalled;
• notifier — monitors running events and shows pop-up notifications when their statuses are changed;
• auth — service for user registration and authorization in VMmanager. It processes profile settings and SSH-keys; 
• taskmgr — tasks processing service that collects, keeps, and outputs information in the Tasks section;
• monitor — collects and displays the current status of the virtual machine and cluster nodes;
• gostat — VM usage statistics processing service. It receives information from the graphite container and displays it in Virtual machines → VM card → Statistics;
• collector — collects VMmanager usage and error statistics and sends them to the metrics server;
• alert-wrapper — this service monitors notifications and transmits them to the notice_center service;
• grafana_proxy — this is the service for proxying platform requests to grafana;
• notice_center — this service sends notifications to the platform interface.

To display a full list of running services:

1. Go to the container vm_box: 

   docker exec -it vm_box_ID bash

2. Open the list of active services: 

   ps ax

Logs

The log files of all VMmanager services are kept in the vm_box container in the directory /var/log. The name of the log file matches the service name. E.g., the name of the log file of the taskmgr service is taskmgr.log.