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Synopsis

HA Proxy is a very powerful and popular open source load balancer to balance incoming requests between multiple instances of web-, application- or database servers etc.

cd_haproxy automates installation and configuration of HA proxy including self-healing, monitoring and firewall etc.

WARNING

**__!!! Attention: Never use this puppet module on systems which have been previously configured manually. It is impossible to predict how and what would have been configured, hence previous configurations outside the scope of this module may be overwritten! Automated configurations require a test environment to verify that the module suits the purpose intended by the user, as well as tune the parameters, before deploying into live production!!! __**

Features

INSTALLATION

• install rpm binaries

CONFIGURATION

• manage haproxy user

• manage directories (file system permissions, selinux context)

• manage files (file system permissions, content, selinux context)

• manage proxy instances through a define

• frontend options

• backend options

• ACL options

SERVICE

• manage haproxy service

• restart service after changes in the configuration

Puppet Documentation

Dependencies

All dependencies must be included in the catalogue.

• cd_resources for managing yum base repos

• cd_concat or concat for managing file fragments

Deployment

native Puppet deployment

via site.pp or nodes.pp

node 'example.example.net' {
  include cd_haproxy
}

through Foreman

Add params.pp to the host or hostgroup.

See details.

Documentation

Parameters

The parameters are defined and described in params.pp. The documentation is provided via puppet strings in HTML format, please see doc/index.html via web browser.

Proxy Configuration

Via Define

The proxy instances are configured in /etc/haproxy/haproxy.cfg, which is concatenated from various templates through a define in this puppet module. In order to create proxy instances, you will need an external class, which addresses the define, like so:

cd_haproxy::server::proxy { 'testing':
    haproxy_fqdn    =>  'node.example.net',
    frontend_name   =>  'test01-frontend',
    frontend_mode   =>  'http',
    acl_rule        =>  ['too_fast fe_sess_rate ge 10',
                          'network_allowed src 0.0.0.0/0'],
    backend_name    =>  'test01-backend',
  }

This class should be placed in an internal configuration repo specific to your environment.

SELINUX

All files and directories are configured with correct selinux context. If selinux is disabled, these contexts are ignored.

Known Problems

Support

• OS: CentOS 7

• Puppet 5.x

Tests

• Puppet Lint

• excluded tests:

  • --no-class_inherits_from_params_class-check:relevant only to non-supported outdated puppet versions

  • --no-variable_scope-check: not applicable as we are inheriting parameters from the params class. the lint check does not distinguish between facts and inherited parameters.

  • --no-80chars-check: it is not always possible to stay within 80 characters, although typically only occurring on the parameter vault params.pp.

  • --no-arrow_alignment-check: this check leads to actually not having easily readable arrow alignments, as this checks per block, not per class.

• Puppet Parser

• ERB Template Parser

• Test for unwanted UTF8 files

Contact Us

contact Us

Disclaimer

ConfDroid as entity is independent from Puppet. We provide custom configuration modules, written for specific purposes and specific environments. The modules are tested and supported only as documented, and require testing in designated environments (i.e. lab or development environments) for parameter tuning etc. before deploying into production environments.