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Set up varnish and varnish logging

Project description

This package provides buildout recipes for the configuration of varnish. This has a number of features and differences from plone.recipe.varnish, but it was inspired by that package.

This package also doesn’t provide all the features of plone.recipe.varnish, since it’s designed to be used slightly differently. Using this recipe you have one varnish daemon per deployed backend application server. If you have three different applications on a server, you will run three varnish daemons. This means they can be separately deployed, configured and maintained. This also means there is no need for host-header based routing.

Note that this package provides no support for installing varnish. Use the binary provided by your OS, or use zc.recipe.cmmi perhaps.

The key differences are:

  1. This packages uses isotoma.recipe.gocaptain to write the start/stop scripts, so it’s more likely to play well with your OS and behaves more normally
  2. Support for a separate logging system with each varnish instance, again using GoCaptain
  3. A different (and arguably more sane) basic varnish configuration
  4. Easy support for custom templates

Configuration example

A recipe for this package would look something like:

[varnish]
recipe = isotoma.recipe.varnish
name = mysite
bind = 127.0.0.1:8080
backends = 127.0.0.1:9000
varnishlog = /usr/bin/varnishncsa
logfile = /var/log/varnish/mysite.log

This would create two start scripts in your bin directory: varnish and varnishlog. The log instance will only log activity for this varnish instance.

Mandatory Parameters

bind
The host:port to listen on
backends
A list of backends (note only one backend is currently supported with the default template, because some director code is required. A custom template should work ok though, if you write one.)

Optional Parameters

name
This identifies the individual varnish instance - see the -n option to varnishd. (required if you are using varnishlog and recommended even if not)
cache-size
The size of the cache.
connect-timeout
The .connect_timeout option in the output VCL
first-byte-timeout
The .first_byte_timeout option in the output VCL
between-bytes-timeout
The .between_bytes_timeout in the output VCL
daemon
The path to the varnishd daemon (default /usr/sbin/varnishd)
runtime-parameters
Any other parameters to pass at runtime
user
The user to run the daemon as (default nobody)
group
The group to run the daemon as (default nobody)
verbose-headers
If you set this, you will get some very useful debugging headers in your HTTP output.
template
The path to the template to use, if you wish to provide a different one.
log-include-regex
Include lines matching the specified regex in the log output
log-exclude-regex
Exclude lines matching the specified regex from the log output
log-include-tag
Include lines with the specified tag in the log output
log-exclude-tag
Exclude lines with the specified tag from the log output
logfile
The path to the logfile to write (required if varnishlog specified)
varnishlog
The path to the varnishlog binary - you can use either varnishlog or varnishncsa
telnet
Offer a management interface on the specified address and port. (format: address:port)

License

Copyright 2010 Isotoma Limited

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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