我将为Redmine设置负载平衡和故障转移:
HAProxy 1 ------- Apache 1 ------- MySQL 1
| (Repcached) |
| | |
(virtual IP) (memcached repl) (master-master repl)
| | |
| (Repcached) |
HAProxy 2 ------- Apache 2 ------- MySQL 2
我想使用repcached进行会话存储:
/usr/local/memcached / bin / memcached -d -u memcached -l 192.168.3.118 -c 512 -t 8 -m 512 -p 11211 -P /usr/local/memcached/var/run/redmine.pid -f 1.25 -x 192.168.6.142 -X 112110
复制功能工作正常(通过telnet测试).
安装了memcache-client:
# gem list memcache-client
*** LOCAL GEMS ***
memcache-client (1.8.5)
并且可以从命令行加载:
# su - apache -s /bin/bash
-bash-3.2$gem contents --no-prefix memcache-client
FAQ.rdoc
History.rdoc
LICENSE.txt
README.rdoc
Rakefile
bin/memcached_top
lib/continuum_native.rb
lib/memcache.rb
lib/memcache/event_machine.rb
lib/memcache/version.rb
lib/memcache_util.rb
performance.txt
test/test_benchmark.rb
test/test_event_machine.rb
test/test_mem_cache.rb
-bash-3.2$ruby -rubygems -e 'require "memcache"'
-bash-3.2$echo $?
0
我的服务器上只有一个Ruby版本:
-bash-3.2$which ruby
/usr/bin/ruby
-bash-3.2$gem env
RubyGems Environment:
- RUBYGEMS VERSION: 1.8.10
- RUBY VERSION: 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
- INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8
- RUBY EXECUTABLE: /usr/bin/ruby
- EXECUTABLE DIRECTORY: /usr/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-linux
- GEM PATHS:
- /usr/lib/ruby/gems/1.8
- /var/www/.gem/ruby/1.8
- GEM CONFIGURATION:
- :update_sources => true
- :verbose => true
- :benchmark => false
- :backtrace => false
- :bulk_threshold => 1000
- REMOTE SOURCES:
- http://rubygems.org/
到config / environment.rb:
require 'memcache'
config.action_controller.session_store = :mem_cache_store
memcache_options = {
:compression => true,
:debug => false,
:namespace => "mem-#{RAILS_ENV}",
:readonly => false,
:urlencode => false
}
memcache_servers = [ '192.168.3.118:11211', '192.168.6.142:11211' ]
CACHE = MemCache.new(memcache_options)
CACHE.servers = memcache_servers
ActionController::Base.session_options[:cache] = CACHE
但重启Apache时会抛出以下错误:
no such file to load — memcache
我错过了什么?
PS:
Redmine version 2.0.3.stable
Ruby version 1.8.7 (x86_64-linux)
Rails version 3.2.6
Environment production
Database adapter MySQL
最佳答案 您需要将gem’memcache-client’添加到Gemfile中.