zabbix-docker/web-nginx-pgsql/centos

What is Zabbix?

Zabbix is an enterprise-class open source distributed monitoring solution.

Zabbix is software that monitors numerous parameters of a network and the health and integrity of servers. Zabbix uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows a fast reaction to server problems. Zabbix offers excellent reporting and data visualisation features based on the stored data. This makes Zabbix ideal for capacity planning.

For more information and related downloads for Zabbix components, please visit https://hub.docker.com/u/zabbix/ and https://zabbix.com

What is Zabbix web interface?

Zabbix web interface is a part of Zabbix software. It is used to manage resources under monitoring and view monitoring statistics.

Zabbix web interface images

These are the only official Zabbix web interface Docker images. They are based on Alpine Linux v3.9, Ubuntu 18.04 (bionic) and CentOS 7 images. The available versions of Zabbix web interface are:

Zabbix web interface 3.0 (tags: alpine-3.0-latest, ubuntu-3.0-latest, centos-3.0-latest)
Zabbix web interface 3.0.* (tags: alpine-3.0.*, ubuntu-3.0.*, centos-3.0.*)
Zabbix web interface 3.2 (tags: alpine-3.2-latest, ubuntu-3.2-latest, centos-3.2-latest)
Zabbix web interface 3.2.* (tags: alpine-3.2.*, ubuntu-3.2.*, centos-3.2.*)
Zabbix web interface 3.4 (tags: alpine-3.4-latest, ubuntu-3.4-latest, centos-3.4-latest)
Zabbix web interface 3.4.* (tags: alpine-3.4.*, ubuntu-3.4.*, centos-3.4.*)
Zabbix web interface 4.0 (tags: alpine-4.0-latest, ubuntu-4.0-latest, centos-4.0-latest)
Zabbix web interface 4.0.* (tags: alpine-4.0.*, ubuntu-4.0.*, centos-4.0.*)
Zabbix web interface 4.2 (tags: alpine-4.2-latest, ubuntu-4.2-latest, centos-4.2-latest, alpine-latest, ubuntu-latest, centos-latest, latest)
Zabbix web interface 4.2.* (tags: alpine-4.2.*, ubuntu-4.2.*, centos-4.2.*)
Zabbix web interface 4.4 (tags: alpine-trunk, ubuntu-trunk, centos-trunk)

Images are updated when new releases are published. The image with latest tag is based on Alpine Linux.

Zabbix web interface available in three editions:

• Zabbix web-interface based on Apache2 web server with MySQL database support
• Zabbix web-interface based on Apache2 web server with PostgreSQL database support
• Zabbix web-interface based on Nginx web server with MySQL database support
• Zabbix web-interface based on Nginx web server with PostgreSQL database support

The image based on Nginx web server with PostgreSQL database support.

How to use this image

Start zabbix-web-nginx-pgsql

Start a Zabbix web-interface container as follows:

docker run --name some-zabbix-web-nginx-pgsql -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag

Where some-zabbix-web-nginx-pgsql is the name you want to assign to your container, some-postgres-server is IP or DNS name of PostgreSQL server, some-user is user to connect to Zabbix database on PostgreSQL server, some-password is the password to connect to PostgreSQL server, some-zabbix-server is IP or DNS name of Zabbix server or proxy, some-timezone is PHP like timezone name and tag is the tag specifying the version you want. See the list above for relevant tags, or look at the full list of tags.

Linking the container to Zabbix server

docker run --name some-zabbix-web-nginx-pgsql --link some-zabbix-server:zabbix-server -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag

Linking the container to PostgreSQL database

docker run --name some-zabbix-web-nginx-pgsql --link some-postgres-server:postgres -e DB_SERVER_HOST="some-postgres-server" -e POSTGRES_USER="some-user" -e POSTGRES_PASSWORD="some-password" -e ZBX_SERVER_HOST="some-zabbix-server" -e PHP_TZ="some-timezone" -d zabbix/zabbix-web-nginx-pgsql:tag

Container shell access and viewing Zabbix web interface logs

The docker exec command allows you to run commands inside a Docker container. The following command line will give you a bash shell inside your zabbix-web-nginx-pgsql container:

$ docker exec -ti some-zabbix-web-nginx-pgsql /bin/bash

The Zabbix web interface log is available through Docker's container log:

$ docker logs  some-zabbix-web-nginx-pgsql

Environment Variables

When you start the zabbix-web-nginx-pgsql image, you can adjust the configuration of the Zabbix web interface by passing one or more environment variables on the docker run command line.

ZBX_SERVER_HOST

This variable is IP or DNS name of Zabbix server. By default, value is zabbix-server.

ZBX_SERVER_PORT

This variable is port Zabbix server listening on. By default, value is 10051.

DB_SERVER_HOST

This variable is IP or DNS name of PostgreSQL server. By default, value is 'postgres-server'

DB_SERVER_PORT

This variable is port of PostgreSQL server. By default, value is '5432'.

POSTGRES_USER, POSTGRES_PASSWORD

These variables are used by Zabbix web interface to connect to Zabbix database. By default, values are zabbix, zabbix.

POSTGRES_DB

The variable is Zabbix database name. By default, value is zabbix.

ZBX_HISTORYSTORAGEURL

History storage HTTP[S] URL. This parameter is used for Elasticsearch setup. Available since 3.4.5.

ZBX_HISTORYSTORAGETYPES

Array of value types to be sent to the history storage. An example: ['uint', 'dbl']. This parameter is used for Elasticsearch setup. Available since 3.4.5.

PHP_TZ

The variable is timezone in PHP format. Full list of supported timezones are available on php.net. By default, value is 'Europe/Riga'.

ZBX_SERVER_NAME

The variable is visible Zabbix installation name in right top corner of the web interface.

ZBX_MAXEXECUTIONTIME

The varable is PHP max_execution_time option. By default, value is 300.

ZBX_MEMORYLIMIT

The varable is PHP memory_limit option. By default, value is 128M.

ZBX_POSTMAXSIZE

The varable is PHP post_max_size option. By default, value is 16M.

ZBX_UPLOADMAXFILESIZE

The varable is PHP upload_max_filesize option. By default, value is 2M.

ZBX_MAXINPUTTIME

The varable is PHP max_input_time option. By default, value is 300.

ZBX_SESSION_NAME

The variable is Zabbix frontend definition. String used as the name of the Zabbix frontend session cookie. By default, value is zbx_sessionid.

Allowed volumes for the Zabbix web interface container

/etc/ssl/nginx

The volume allows to enable HTTPS for the Zabbix web interface. The volume must contains two files ssl.crt, ssl.key and dhparam.pem prepared for Nginx SSL connections.

Please follow official Nginx documentation to get more details about how to create certificate files.

The image variants

The zabbix-web-nginx-pgsql images come in many flavors, each designed for a specific use case.

zabbix-web-nginx-pgsql:ubuntu-<version>

This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.

zabbix-web-nginx-pgsql:alpine-<version>

This image is based on the popular Alpine Linux project, available in the alpine official image. Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.

This variant is highly recommended when final image size being as small as possible is desired. The main caveat to note is that it does use musl libc instead of glibc and friends, so certain software might run into issues depending on the depth of their libc requirements. However, most software doesn't have an issue with this, so this variant is usually a very safe choice. See this Hacker News comment thread for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images.

To minimize image size, it's uncommon for additional related tools (such as git or bash) to be included in Alpine-based images. Using this image as a base, add the things you need in your own Dockerfile (see the alpine image description for examples of how to install packages if you are unfamiliar).

Supported Docker versions

This image is officially supported on Docker version 1.12.0.

Support for older versions (down to 1.6) is provided on a best-effort basis.

Please see the Docker installation documentation for details on how to upgrade your Docker daemon.

User Feedback

Documentation

Documentation for this image is stored in the web-nginx-pgsql/ directory of the zabbix/zabbix-docker GitHub repo. Be sure to familiarize yourself with the repository's README.md file before attempting a pull request.

Issues

If you have any problems with or questions about this image, please contact us through a GitHub issue.

Known issues

Contributing

You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.

Before you start to code, we recommend discussing your plans through a GitHub issue, especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.