The Starzel Buildout

This is a standard Plone-buildout of the company Starzel.de.

Contents

• Main features
• Structure
• Versions
• Quickstart
• Configuring a project
• Use in development
• Use in production
• Use for test-instances
• Features
  • Debugging and Development
  • i18n
  • Testing
  • Deployment
• Notes

Main features

• It extends to config- and version-files on github shared by all projects that use the same version of Plone.
• It allows to update a project simply by changing the version it extends.
• It allows to update all projects of one version by changing remote files (very useful for HotFixes).
• It is minimal work to setup a new project.
• It has presets for development, testing, staging and production.
• It has all the nice development-helpers we use.

Structure

buildout.cfg

This contains the project settings (name, addons, checkouts etc.).

local.cfg

For each environment (development, production, jenkins/test) there is a separate local_*.cfg-file. You create a symlink called local.cfg to one of these files depending on your environment. Each of the files includes the remote base.cfg that is hosted on github like this:

extends = https://raw.githubusercontent.com/starzel/buildout/5.0.3/linkto/base.cfg

This example refers to the tag 5.0.3 of this buildout that uses Plone 5.0.3 To use a different Plone-version simply change that to point to a different tag.

base.cfg

This remote file conatains most of the commonly used logic used for prodcution. It also includes two version-files that are also hosted on github:

• pinned_versions.cfg: Pinns the Plone-version using http://dist.plone.org/release/5.0.3/versions.cfg
• floating_versions.cfg: Pinns all commonly used addons of this buildout.

pinned_versions_project.cfg

Here you pinn versions to overwrite or extend the hosted pinned_versions.cfg. These eggs are usually pinned for a reason and are usually not safe to be upgraded.

floating_versions_project.cfg

Here you overwrite and extend the hosted floating_versions.cfg. These eggs should usually be safe to be upgraded. ./bin/checkversions floating_versions_project.cfg will check pypi if there are newer releases for your pinned eggs.

Versions

We support the following version of Plone:

• 5.0.3
• 5.0.2
• 5.0
• 5.0rc3
• 5.0rc2
• 5.0rc1
• 5.0b4
• 5.0b3
• 5.0b2
• 5.0b1
• 5.0a3
• 4.3.8
• 4.3.7
• 4.3.6
• 4.3.4
• 4.3.3
• 4.3.2
• 4.3.1
• 4.3
• 4.3rc1
• 4.2.7
• 4.2.5
• 4.2.3
• 4.2.2

To develop against the current Coredev use local_coredev.cfg.

Please note that new features are not introduced to old versions.

Quickstart

$ git clone https://github.com/starzel/buildout SOME_PROJECT
$ cd SOME_PROJECT

You do not need the linkto-directory since its files are used via links to github.

$ rm -rf linkto

If you are not developing the buildout itself you want a create a new repo.

$ rm -rf .git && git init

Add a file that contains a passwort. Do not use admin as a password in production!

$ echo -e "[buildout]\nlogin = admin\npassword = admin" > secret.cfg

Symlink to the file that best fits you local environment. At first that is usually development. Later you can use production or test. This buildout only uses local.cfg and ignores all local_*.cfg.

$ ln -s local_develop.cfg local.cfg

Build Plone

$ virtualenv-2.7 .
$ ./bin/pip install -r requirements.txt
$ ./bin/buildout

Configuring a project

buildout.cfg contains the general project settings. Here you configure the name of the project, the eggs, source-checkouts and languages Plone will use.

Use in development

Symlink to the development-config:

$ ln -s local_develop.cfg local.cfg

The development-setup will build a simple instance with some useful tools (see below). The setup assumes that zeo, varnish, haproxy and nginx are only configured on production.

Use in production

Symlink to the production-config:

$ ln -s local_production.cfg local.cfg

In local_production.cfg to select the parts you really need. A average project that uses haproxy, vanish and two zeoclients looks like this:

parts +=
    ${buildout:zeo-ha-parts}
    ${buildout:nginx-parts}
    ${buildout:varnish-parts}
    ${buildout:supervisor-parts}
    ${buildout:cron-parts}
    backup
    logrotate
    precompiler

Also modify templates/supervisord.conf to have supervisor manage the parts you want to use.

Use for test-instances

Create a copy of local_production.cfg called local_test.cfg and modify it according to your needs.

Warning

If test runs on the same server as production:

In this case you need a different name for the project on test. Otherwise one will overwrite the database of the other. Because of this the name of the project must not be set in buildout.cfg but in the local_*.cfg-files.

Features

Debugging and Development

packages

All eggs of your buildout will be symlinked to in parts/packages.

zopepy

Run ./bin/zopepy to have a python-prompt with all eggs of your buildout in its python-path.

checkversions

Run ./bin/checkversions floating_versions_project.cfg to check if your pinned eggs are up-to-date.

codeintel

This part uses corneti.recipes.codeintel to prepare for codeintel-integration (useful for users of Sublime Text).

stacktrace

The part stacktrace-script adds a bash-script ./bin/stack.sh that will print the current stacktrace to stdout. Useful to find out what Plone is doing when it's busy.

code-analysis

This installs a pre-commit-hook that runs the codeanalysis-tests from plone.recipe.codeanalysis.

mrbob

This part adds bobtemplates.plone to simplify the creation of new addons.

i18n

Restrict loaded languages

By default only german ('de') is loaded on startup. In your buildout.cfg you can override the loaded languages using language = de en fr. This setting also affects the languages used in the i18nize-xxx part. (see http://maurits.vanrees.org/weblog/archive/2010/10/i18n-plone-4#restrict-the-loaded-languages)

i18nize-diff

Show differences of the po files against what is currently in git. This script uses podiff that filters out a lot of noise like creation dates and line numbers. So this output is much more usable. Use this script in jenkins together with i18nize-all to make sure that you po files are up to date.

i18nize-xxx

Modify the commented-out part i18nize-xxx to get a script that runs i18ndude fro an egg. Here is an example for the egg dynajet.site adding a script ./bin/i18nize-site.

[i18nize-site]
recipe = collective.recipe.template
input = ${buildout:directory}/i18nize.in
output = ${buildout:bin-directory}/i18nize-site
mode = 775
dollar = $
domain = dynajet.site
packagepath = ${buildout:directory}/src/dynajet.site/src/dynajet/site
languages = ${buildout:languages}

i18nize-all

This runs all i18nize commands for a package.

Testing

Setup for jenkins

Configure jenkins to run the script ./bootstrap_jenkins.sh. This will configure and run the whole buildout.

Deployment

nginx

TODO: Documentation

haproxy

If you cannot use chroot to run haproxy as a isolated user you need to modify templates/haproxy.cfg like this:

global
  maxconn 480
  user ${haproxy-conf:user}
  group ${haproxy-conf:group}
  daemon
  log 127.0.0.1 local2

varnish

Up to Plone 4.3.3 we still use varnish 2. To use varnish 3 please modify your local_production.cfg like this:

[varnish]
varnish_version = 3

[varnish-config]
input = templates/varnish_3x.vcl.in

varnish 4: TODO. See https://github.com/plone/documentation/blob/master/manage/deploying/caching/varnish4.rst

monitoring

Change the settings for maxram to have memmon restart an instance when it uses up to much memory.

Sentry logging

Configure zeoclients to send tracebacks to Sentry in local_production.cfg by uncommenting it and adding a dsn. You also need to enable the egg raven. Repeat for each zeoclient.

solr

TODO: Not included yet.

Notes

local.cfg and secret.cfg must never be versioned. The file .gitignore in this buildout already prevent this.

It might feels weird that buildout.cfg loads local.cfg, but this avoids some weird behavior of buildouts extends-feature.

To have different supervisor-configurations for test-servers by adding a file templates/supervisord-test.conf and referencing it in local_test.cfg:

[supervisor-conf]
    input= ${buildout:directory}/templates/supervisord-test.conf