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#!/bin/bash mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo mv /etc/yum.repos.d/epel.repo /etc/yum.repos.d/epel.repo.backup mv /etc/yum.repos.d/epel-testing.repo /etc/yum.repos.d/epel-testing.repo.backup wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo yum makecache

    thread_pools                  8 [pools]
thread_pool_max            2000 [threads]
thread_pool_min             100 [threads]
thread_pool_timeout        10 [seconds]

    #这四个参数要一起看.

    #thread_pools是系统sess进入处理的pools.理想的情况下是一个cpu一个pool,如果pools过多会消耗cpu时间和mem.但是,pools多一点,处理并发的能力会更强.

    #thread_pool_min是每个pools的最小threads数.当pools侦测到可处理sess后,就分配给所属的空余threads处理.

    #thread_pool_max是所有pools所属的threads总和数的上限值.这个值不要设置的太高,一般是系统期望峰值的90%.太高了会发生"pile-ups",不知道怎么翻译,是不是"拥挤"?

    #thread_pool_timeout是thread的过期时间.当threads数大于thread_pool_min的时候,thread的空闲超过thread_pool_timeout时间,thread就被释放.

    listen_depth               1024 [connections]     #tcp链接队列size.默认是512,适当调大一点,处理并发能力增强.

    lru_interval               3600 [seconds]

    #优雅时间参数(不知道是不是应该这么翻译),意思就是,如果一个object,在内存中超过了这个时间还没有被重用,则把这个对象移动到 LRU(Least Recently Used)队列中.一种普遍的cache算法.个人理解,提高这个时间,会减少object在内存中的copy,以提高运行效率.

    vcl_recv:      set req.grace = 30s;

    vcl_fetch:     set obj.grace = 30s;

    ulimit -HSn 131072
ulimit -HSc unlimited

    修改"/etc/sysctl.conf".(官网上说,这个配置可以支持4000-8000 req/s的压力.)

    net.ipv4.ip_local_port_range = 1024 65536
net.core.rmem_max=16777216
net.core.wmem_max=16777216
net.ipv4.tcp_rmem=4096 87380 16777216
net.ipv4.tcp_wmem=4096 65536 16777216
net.ipv4.tcp_fin_timeout = 3
net.ipv4.tcp_tw_recycle = 1
net.core.netdev_max_backlog = 30000
net.ipv4.tcp_no_metrics_save=1
net.core.somaxconn = 262144
net.ipv4.tcp_syncookies = 0
net.ipv4.tcp_max_orphans = 262144
net.ipv4.tcp_max_syn_backlog = 262144
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2

    执行优化:
sysctl -p

yum -y install wget --noplugins
wget freevps.us/downloads/nginx-centos-6.sh -O - | bash

yum list | grep ^php*

# 以 php memcache 扩展为例
yum install -y php-pecl-memcached

yum install -y php-xml

#!/bin/bash

##################
# disable apache #
##################
service httpd stop 
chkconfig httpd off
service xinetd stop
chkconfig xinetd off
service saslauthd stop
chkconfig saslauthd off
service sendmail stop
chkconfig sendmail off
service postfix stop
chkconfig postfix off

#Optimize yum on OpenVZ
if [ -e "/proc/user_beancounters" ]
then
  sed -i 's/plugins=1/plugins=0/' /etc/yum.conf
fi

#remove all current PHP and MySQL, will reinstall later. Also, remove apache 
yum -y remove httpd php mysql rsyslog sendmail postfix

###################
# Add a few repos #
###################
# install the Atomic repo for php and nginx (may use epel for nginx depending on version)
wget -q -O - http://www.atomicorp.com/installers/atomic | sh

# RPMForge for nginx dependencies
rpm -Uvh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpm

#EPEL for syslog-ng and nginx (may use atomic for nginx depending on version)
rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm

################################
# Install PHP, NGINX and MySQL #
################################
#yum install GeoIP libGeoIP.so.1 --enablerepo=repoforge
yum -y install mysql-server php-fpm php-mysql php-gd nginx nano exim syslog-ng

#################
# install MySQL #
#################
#yum -y install mysql-server
cat > /etc/my.cnf <<END
[mysqld]
default-storage-engine = myisam
key_buffer = 8M
query_cache_size = 8M
query_cache_limit = 4M
max_connections=25
thread_cache=1
skip-innodb 
query_cache_min_res_unit=0
tmp_table_size = 4M
max_heap_table_size = 4M
table_cache=256
concurrent_insert=2 
END
echo  Do not worry if you see a error stopping MySQL or NGINX
/etc/init.d/mysqld stop
/etc/init.d/mysqld start

####################
# Set up NGINX PHP #
####################
cat > /etc/nginx/php <<END
index index.php index.html index.htm;

location ~ \.php$ {

   include fastcgi_params;
    fastcgi_intercept_errors on;
    fastcgi_index index.php;
    fastcgi_param SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
  try_files \$uri =404;
    fastcgi_pass 127.0.0.1:9000;
    error_page 404 /404page.html; #makes nginx return it's default 404 
#	page instead of a blank page

} 
END

cat > /etc/nginx/nginx.conf <<END
user              nginx nginx;
worker_processes  2;

error_log         logs/error.log;

pid               logs/nginx.pid;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    client_max_body_size 64M;
    sendfile        on;
    tcp_nopush      on;

    keepalive_timeout  3;

    gzip  on;
    gzip_comp_level 2;
    gzip_proxied any;
    gzip_types      text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;

    server_tokens off;

    include /etc/nginx/conf.d/*;
} 
END
rm /etc/nginx/conf.d/*
cat > /etc/nginx/conf.d/default.conf <<END
server {
    listen 80 default;
    server_name _;
    root /var/www/html;
    include php;

  } 
END
mkdir /usr/share/nginx/logs/
service nginx restart
chkconfig nginx on
chkconfig mysqld on

cat > /etc/php-fpm.d/www.conf <<END
; Start a new pool named 'www'.
[www]

; The address on which to accept FastCGI requests.
; Valid syntaxes are:
;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific address on
;                            a specific port;
;   'port'                 - to listen on a TCP socket to all addresses on a
;                            specific port;
;   '/path/to/unix/socket' - to listen on a unix socket.
; Note: This value is mandatory.
listen = 127.0.0.1:9000

; Set listen(2) backlog. A value of '-1' means unlimited.
; Default Value: -1
;listen.backlog = -1

; List of ipv4 addresses of FastCGI clients which are allowed to connect.
; Equivalent to the FCGI_WEB_SERVER_ADDRS environment variable in the original
; PHP FCGI (5.2.2+). Makes sense only with a tcp listening socket. Each address
; must be separated by a comma. If this value is left blank, connections will be
; accepted from any ip address.
; Default Value: any
listen.allowed_clients = 127.0.0.1

; Set permissions for unix socket, if one is used. In Linux, read/write
; permissions must be set in order to allow connections from a web server. Many
; BSD-derived systems allow connections regardless of permissions. 
; Default Values: user and group are set as the running user
;                 mode is set to 0666
;listen.owner = nobody
;listen.group = nobody
;listen.mode = 0666

; Unix user/group of processes
; Note: The user is mandatory. If the group is not set, the default user's group
;       will be used.
; RPM: apache Choosed to be able to access some dir as httpd
user = apache
; RPM: Keep a group allowed to write in log dir.
group = apache

; Choose how the process manager will control the number of child processes.
; Possible Values:
;   static  - a fixed number (pm.max_children) of child processes;
;   dynamic - the number of child processes are set dynamically based on the
;             following directives:
;             pm.max_children      - the maximum number of children that can
;                                    be alive at the same time.
;             pm.start_servers     - the number of children created on startup.
;             pm.min_spare_servers - the minimum number of children in 'idle'
;                                    state (waiting to process). If the number
;                                    of 'idle' processes is less than this
;                                    number then some children will be created.
;             pm.max_spare_servers - the maximum number of children in 'idle'
;                                    state (waiting to process). If the number
;                                    of 'idle' processes is greater than this
;                                    number then some children will be killed.
; Note: This value is mandatory.
pm = dynamic

; The number of child processes to be created when pm is set to 'static' and the
; maximum number of child processes to be created when pm is set to 'dynamic'.
; This value sets the limit on the number of simultaneous requests that will be
; served. Equivalent to the ApacheMaxClients directive with mpm_prefork.
; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP
; CGI.
; Note: Used when pm is set to either 'static' or 'dynamic'
; Note: This value is mandatory.
pm.max_children = 5

; The number of child processes created on startup.
; Note: Used only when pm is set to 'dynamic'
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 1

; The desired minimum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.min_spare_servers = 1

; The desired maximum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.max_spare_servers = 3

; The number of requests each child process should execute before respawning.
; This can be useful to work around memory leaks in 3rd party libraries. For
; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
; Default Value: 0
pm.max_requests = 500

; The URI to view the FPM status page. If this value is not set, no URI will be
; recognized as a status page. By default, the status page shows the following
; information:
;   accepted conn    - the number of request accepted by the pool;
;   pool             - the name of the pool;
;   process manager  - static or dynamic;
;   idle processes   - the number of idle processes;
;   active processes - the number of active processes;
;   total processes  - the number of idle + active processes.
; The values of 'idle processes', 'active processes' and 'total processes' are
; updated each second. The value of 'accepted conn' is updated in real time.
; Example output:
;   accepted conn:   12073
;   pool:             www
;   process manager:  static
;   idle processes:   35
;   active processes: 65
;   total processes:  100
; By default the status page output is formatted as text/plain. Passing either
; 'html' or 'json' as a query string will return the corresponding output
; syntax. Example:
;   http://www.foo.bar/status
;   http://www.foo.bar/status?json
;   http://www.foo.bar/status?html
; Note: The value must start with a leading slash (/). The value can be
;       anything, but it may not be a good idea to use the .php extension or it
;       may conflict with a real PHP file.
; Default Value: not set 
;pm.status_path = /status

; The ping URI to call the monitoring page of FPM. If this value is not set, no
; URI will be recognized as a ping page. This could be used to test from outside
; that FPM is alive and responding, or to
; - create a graph of FPM availability (rrd or such);
; - remove a server from a group if it is not responding (load balancing);
; - trigger alerts for the operating team (24/7).
; Note: The value must start with a leading slash (/). The value can be
;       anything, but it may not be a good idea to use the .php extension or it
;       may conflict with a real PHP file.
; Default Value: not set
;ping.path = /ping

; This directive may be used to customize the response of a ping request. The
; response is formatted as text/plain with a 200 response code.
; Default Value: pong
;ping.response = pong

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the 'max_execution_time' ini option
; does not stop script execution for some reason. A value of '0' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
;request_terminate_timeout = 0

; The timeout for serving a single request after which a PHP backtrace will be
; dumped to the 'slowlog' file. A value of '0s' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
;request_slowlog_timeout = 0

; The log file for slow requests
; Default Value: /var/log/php-fpm.log.slow
;slowlog = /var/log/php-fpm.log.slow

; Set open file descriptor rlimit.
; Default Value: system defined value
;rlimit_files = 1024

; Set max core size rlimit.
; Possible Values: 'unlimited' or an integer greater or equal to 0
; Default Value: system defined value
;rlimit_core = 0

; Chroot to this directory at the start. This value must be defined as an
; absolute path. When this value is not set, chroot is not used.
; Note: chrooting is a great security feature and should be used whenever 
;       possible. However, all PHP paths will be relative to the chroot
;       (error_log, sessions.save_path, ...).
; Default Value: not set
;chroot = 

; Chdir to this directory at the start. This value must be an absolute path.
; Default Value: current directory or / when chroot
;chdir = /var/www

; Redirect worker stdout and stderr into main error log. If not set, stdout and
; stderr will be redirected to /dev/null according to FastCGI specs.
; Default Value: no
;catch_workers_output = yes

; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from
; the current environment.
; Default Value: clean env
;env[HOSTNAME] = $HOSTNAME
;env[PATH] = /usr/local/bin:/usr/bin:/bin
;env[TMP] = /tmp
;env[TMPDIR] = /tmp
;env[TEMP] = /tmp

; Additional php.ini defines, specific to this pool of workers. These settings
; overwrite the values previously defined in the php.ini. The directives are the
; same as the PHP SAPI:
;   php_value/php_flag             - you can set classic ini defines which can
;                                    be overwritten from PHP call 'ini_set'. 
;   php_admin_value/php_admin_flag - these directives won't be overwritten by
;                                     PHP call 'ini_set'
; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no.

; Defining 'extension' will load the corresponding shared extension from
; extension_dir. Defining 'disable_functions' or 'disable_classes' will not
; overwrite previously defined php.ini values, but will append the new value
; instead.

; Default Value: nothing is defined by default except the values in php.ini and
;                specified at startup with the -d argument
;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f www@my.domain.com
;php_flag[display_errors] = off
php_admin_value[error_log] = /var/log/php-fpm/www-error.log
php_admin_flag[log_errors] = on
;php_admin_value[memory_limit] = 32M
php_admin_value[upload_max_filesize] = 32M
END

mkdir /var/www
mkdir /var/www/html/
useradd apache
service php-fpm start
chkconfig php-fpm on
iptables -I INPUT -p tcp --dport 80 -j ACCEPT
service iptables save

wget freevps.us/downloads/setup-vhost.sh -O /bin/setup-vhost
chmod 755 /bin/setup-vhost
echo "alias nano='nano -w'" >> ~/.bashrc
clear
echo Installation done.
echo to create a vhost, run
echo setup-vhost example.com
echo do not include the www. subdomain.