一、实验环境
服务器 IP地址 系统版本varnish服务器 172.16.8.1 CentOS6.5
web1服务器 172.16.8.5:81 Centos6.5
web2服务器 172.16.8.5:82 Centos6.5
img1服务器 172.16.8.5:83 Centos6.5
img2服务器 172.16.8.5:84 Centos6.5
php1服务器 172.16.8.5:85 Centos6.5
php2服务器 172.16.8.5:86 Centos6.5
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相关阅读：
RedHat脚本改用CentOS源更新安装Nginx、PHP 5.3、Varnish
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二、安装varnish
1、下载地址：
varnish-libs-3.0.4-1.el6.x86_64.rpm
varnish-3.0.4-1.el6.x86_64.rpm
varnish-docs-3.0.4-1.el6.x86_64.rpm
2、安装varnish
[root@localhost ~]# rpm -ivh varnish-docs-3.0.4-1.el6.x86_64.rpm varnish-3.0.4-1.el6.x86_64.rpm varnish-libs-3.0.4-1.el6.x86_64.rpm
3、配置文件详解
# cat /etc/sysconfig/varnish
/////////////
# Configuration file for varnish
#
# /etc/init.d/varnish expects the variable $DAEMON_OPTS to be set from this
# shell script fragment.
#
# Maximum number of open files (for ulimit -n)
NFILES=131072 //打开最大文件数
# Locked shared memory (for ulimit -l)
# Default log size is 82MB + header
MEMLOCK=82000 //默认日志大小
# Maximum number of threads (for ulimit -u)
NPROCS="unlimited" //最大线程数
# Maximum size of corefile (for ulimit -c). Default in Fedora is 0
# DAEMON_COREFILE_LIMIT="unlimited" //最大内核打开的文件数
# Set this to 1 to make init script reload try to switch vcl without restart.
# To make this work, you need to set the following variables
# explicit: VARNISH_VCL_CONF, VARNISH_ADMIN_LISTEN_ADDRESS,
# VARNISH_ADMIN_LISTEN_PORT, VARNISH_SECRET_FILE, or in short,
# use Alternative 3, Advanced configuration, below
RELOAD_VCL=1 //是否自动加载VCL
# This file contains 4 alternatives, please use only one.
## Alternative 1, Minimal configuration, no VCL //方案1，最小配置，不方便
#
# Listen on port 6081, administration on localhost:6082, and forward to
# content server on localhost:8080. Use a fixed-size cache file.
#
#DAEMON_OPTS="-a :6081 \
# -T localhost:6082 \
# -b localhost:8080 \
# -u varnish -g varnish \
# -s file,/var/lib/varnish/varnish_storage.bin,1G"
## Alternative 2, Configuration with VCL //方案2，配置组件
#
# Listen on port 6081, administration on localhost:6082, and forward to
# one content server selected by the vcl file, based on the request. Use a
# fixed-size cache file.
#
#DAEMON_OPTS="-a :6081 \
# -T localhost:6082 \
# -f /etc/varnish/default.vcl \
# -u varnish -g varnish \
# -S /etc/varnish/secret \
# -s file,/var/lib/varnish/varnish_storage.bin,1G"
## Alternative 3, Advanced configuration //方案3，高级配置
#
# See varnishd(1) for more information.
#
# # Main configuration file. You probably want to change it :)
VARNISH_VCL_CONF=/etc/varnish/default.vcl //默认的VCL存放位置
#
# # Default address and port to bind to
# # Blank address means all IPv4 and IPv6 interfaces, otherwise specify
# # a host name, an IPv4 dotted quad, or an IPv6 address in brackets.
# VARNISH_LISTEN_ADDRESS=
VARNISH_LISTEN_PORT=6081 //服务监听端口
#
# # Telnet admin interface listen address and port
VARNISH_ADMIN_LISTEN_ADDRESS=127.0.0.1 //管理IP
VARNISH_ADMIN_LISTEN_PORT=6082 //管理端口
#
# # Shared secret file for admin interface
VARNISH_SECRET_FILE=/etc/varnish/secret //默认的加密文件
#
# # The minimum number of worker threads to start
VARNISH_MIN_THREADS=50 //最小线程数
#
# # The Maximum number of worker threads to start
VARNISH_MAX_THREADS=1000 //最大线程数
#
# # Idle timeout for worker threads
VARNISH_THREAD_TIMEOUT=120 //线程超时时间
#
# # Cache file location
VARNISH_STORAGE_FILE=/var/lib/varnish/varnish_storage.bin //缓存文件的位置
#
# # Cache file size: in bytes, optionally using k / M / G / T suffix,
# # or in percentage of available disk space using the % suffix.
VARNISH_STORAGE_SIZE=1G //设置存储的大小
#
# # Backend storage specification //后端存储规范，这里是我们主要配置的地方
VARNISH_STORAGE="file,${VARNISH_STORAGE_FILE},${VARNISH_STORAGE_SIZE}" //默认存储在文件里，我们这里修改为malloc
#
# # Default TTL used when the backend does not specify one //默认TTL时使用的后端不指定一个
VARNISH_TTL=120
#
# # DAEMON_OPTS is used by the init script. If you add or remove options, make
# # sure you update this section, too. //所有的启动选项
DAEMON_OPTS="-a ${VARNISH_LISTEN_ADDRESS}:${VARNISH_LISTEN_PORT} \
-f ${VARNISH_VCL_CONF} \
-T ${VARNISH_ADMIN_LISTEN_ADDRESS}:${VARNISH_ADMIN_LISTEN_PORT} \
-t ${VARNISH_TTL} \
-w ${VARNISH_MIN_THREADS},${VARNISH_MAX_THREADS},${VARNISH_THREAD_TIMEOUT} \
-u varnish -g varnish \
-S ${VARNISH_SECRET_FILE} \
-s ${VARNISH_STORAGE}"
#
## Alternative 4, Do It Yourself. See varnishd(1) for more information. //方案4，设置你自己的配置。看到varnishd（1）更多的信息。
#
# DAEMON_OPTS=""
4、修改启动脚本
# vim /etc/sysconfig/varnish
VARNISH_LISTEN_PORT=8080 #这里设置的监听端口设置为8080
VARNISH_STORAGE="malloc,64M" 设置的缓存内存为64M
5、启动varnish
# service varnish start
6、查看端口
7、连接管理端口
[root@localhost ~]# varnishadm -S /etc/varnish/secret -T 127.0.0.1:6082