前言：由於服務器資源有限，keepalived未配主主、只配了一個VIP。本人在香港機房生產環境部署的實際案例，從2013年9月開始運行，服務從未掛過。由於涉及到生產環境，系統展示就不貼出來了。希望大家給予意見！
Webserver部署的是lnmp環境，採用我自己寫的一鍵編譯安裝腳本，安裝目錄在/data/webserver/。如大家想借鑑我的編譯安裝腳本，請留言向我索取。
一、架構規劃
1、服務器IP地址規劃
VIP：192.168.1.6
real_server1:192.168.1.7
real_server2:192.168.1.8
WebServer1:192.168.1.9
WebServer2:192.168.1.10
memcache: 192.168.1.11
mysql主：192.168.1.12
mysql從：192.168.1.2
2、服務器操作系統
所使用的操作系統均爲CentOS 6.4
3、網絡拓撲圖
二、負載服務器配置
1.LVS主服務器配置
安裝yum install keepalived ipvsadm
chkconfig keepalived on
vim /etc/ keepalived/keepalived.conf
global_defs {
notification_email {
[email protected]
}
notification_email_from
smtp_server 127.0.0.1
#smtp_connect_timeout 30
router_id LVS_DEVEL_1
}
vrrp_instance VI_1 {
state MASTER
interface eth1
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.6
}
}
virtual_server 192.168.1.6 80 {
delay_loop 6
#lb_algo wrr
lb_algo rr
lb_kind DR
#persistence_timeout 300
protocol TCP
real_server 192.168.1.7 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.1.8 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}啓動keepalived進程 /etc/init.d/keepalived start
查看本機VIP
2.LVS前端服務器配置（real_server）
2.1 vim /usr/local/bin/lvs_real
VIP=192.168.1.6
case "$1" in
start)
echo " start LVS of REALServer"
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
stop)
/sbin/ifconfig lo:0 down
echo "close LVS Directorserver"
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac啓動lvs前端真實IP： lvs_real start
2.2 編譯安裝nginx，此處省略（使用我自己寫的一鍵編譯安裝腳本安裝）
2.3 LVS前端服務器nginx配置
server {
listen 80;
server_name sandy.com;
location / {
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://sandy/;
}
location /coocaa_status {
stub_status on;
access_log /data/log/nginx_status.log;
auth_basic "NginxStatus";
allow 192.168.0.58;
deny all;
}
access_log /data/log/access.log access;
error_log /data/log/error.log warn;
}
upstream sandy {
sticky;
server 192.168.1.9:80; #後端webserver1內網IP
server 192.168.1.10:80; #後端webserver2內網IP
}
}三、Webserver服務器配置
1.編譯安裝nginx、php，此處省略（使用我自己寫的一鍵編譯安裝腳本安裝）
2.webserver服務器nginx配置，如下
user nginx;
worker_processes 8;
worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;
error_log /data/log/error.log debug;
pid /data/webserver/nginx/logs/nginx.pid;
worker_rlimit_nofile 65535;
events {
use epoll;
worker_connections 65535;
}
http {
include mime.types;
default_type application/octet-stream;
charset utf-8;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 50m;
sendfile on;
tcp_nopush on;
keepalive_timeout 60;
tcp_nodelay on;
server_tokens off;
fastcgi_connect_timeout 300;
fastcgi_send_timeout 3000;
fastcgi_read_timeout 3000;
fastcgi_buffer_size 64k;
fastcgi_buffers 4 64k;
fastcgi_busy_buffers_size 128k;
fastcgi_temp_file_write_size 128k;
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;
log_format access '\$remote_addr - \$remote_user [\$time_local] "\$request" ' '\$status \$body_bytes_sent "\$http_referer" '
'"\$http_user_agent" "\$http_x_forwarded_for" - "\$http_soapaction"';
server
{
listen 80;
server_name 0.0.0.0; #webserver外網ip
index index.html index.php;
root /data/www/cloudservice/;
#autoindex on;
location = /favicon.ico {
log_not_found off;
access_log off;
}
location /Framework/tvos/ {
try_files \$uri \$uri/ /Framework/tvos/index.php?\$args;
}
# nginx status
location /coocaa_status {
stub_status on;
access_log /data/log/nginx_status.log;
auth_basic "NginxStatus";
allow 192.168.0.58;
deny all;
}
location ~ \.php$ {
root /data/www/cloudservice;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /data/www/cloudservice/$fastcgi_script_name;
include fastcgi_params;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)\$
{
expires 30d;
}
location ~ .*\.(js|css)?\$
{
expires 1h;
}
access_log /data/log/access.log access;
}
}3.PHP-fpm配置如下：
[global] pid = /data/webserver/php/var/run/php-fpm.pid error_log = /data/log/php-fpm.error.log log_level = error [www] listen = 127.0.0.1:9000 user = nginx group = nginx pm = dynamic ;pm= static pm.max_children = 200 pm.start_servers = 32 pm.min_spare_servers = 32 pm.max_spare_servers = 200 pm.max_requests = 10240 request_terminate_timeout = 900 php_admin_flag[log_errors] = on php_value[session.save_handler] = files php_value[session.save_path] = /tmp catch_workers_output = yes access.log = /data/log/php-fpm.access.log request_slowlog_timeout = 5 slowlog = /data/log/www-slow.log pm.status_path = /status rlimit_files = 65535
四、Memcache服務器部署
1.安裝memcached
yum -y install libevent libevent-devel make gcc gcc-c++ build-essential make
memcached (){
pwd
wget -c http://42.120.20.242/memcached-1.4.15.tar.gz
tar zxvf memcached-1.4.15.tar.gz
cd memcached-1.4.15/
./configure --with-libevent=/usr/local --prefix=/usr/local/memcached
make &&make install
cd ../2.開啓memcached實例，本項目中開了兩個實例。如下
memcached -d -m 2500 -u root -l 192.168.1.13 -p 11211 -c 20480 -P /tmp/memcached.pid –v
memcached -d -m 2500 -u root -l 192.168.1.13 -p 11212 -c 20480 -P /tmp/memcached2.pid –v
五、Mysql服務器配置
1.編譯安裝mysql5.5.29，此處省略（使用我自己寫的一鍵編譯安裝腳本安裝）
2.mysql配置文件如下：
[client] port = 3306 socket = /tmp/mysqld.sock [mysqld] user = mysql port = 3306 socket = /tmp/mysqld.sock skip-external-locking pid-file=/data/mysql/mysqld.pid datadir = /data/mysql log-error=/data/log/error.log key_buffer_size = 3G max_allowed_packet = 256M thread_stack =1M thread_cache_size = 32 sort_buffer_size = 2M join_buffer_size =4M read_buffer_size = 2M net_buffer_length = 16M read_rnd_buffer_size = 8M myisam_sort_buffer_size = 64M myisam_max_sort_file_size = 10G myisam_repair_threads = 1 myisam-recover-options=DEFAULT tmp_table_size = 256M max_heap_table_size = 4G myisam-recover = BACKUP max_connections =3000 max_connect_errors = 100000 query_cache_limit = 2M query_cache_size =512M query_cache_type = 1 query_cache_min_res_unit = 2k default-storage-engine = Innodb table_open_cache = 1000 transaction_isolation = READ-COMMITTED innodb_additional_mem_pool_size = 16M innodb_autoextend_increment = 8M innodb_buffer_pool_size = 4G innodb_checksums = 1 innodb_commit_concurrency = 0 innodb_concurrency_tickets = 500 innodb_doublewrite = 1 innodb_fast_shutdown = 1 innodb_file_io_threads = 4 innodb_file_per_table = 1 innodb_flush_log_at_trx_commit = 0 innodb_flush_method = O_DIRECT innodb_lock_wait_timeout = 30 innodb_locks_unsafe_for_binlog = 0 innodb_log_buffer_size = 3M innodb_max_dirty_pages_pct = 80 innodb_open_files = 3000 innodb_data_file_path=ibdata1:50M:autoextend innodb_log_file_size = 800M innodb_log_files_in_group = 2 log_slow_queries = /data/log/slow.log long_query_time = 2 log-queries-not-using-indexes log_bin_trust_function_creators = 1 expire_logs_days = 10 max_binlog_size = 100M binlog_cache_size = 256K binlog_stmt_cache_size=128K max_binlog_cache_size = 512M max_binlog_stmt_cache_size=512M binlog_format=mixed skip-name-resolve server-id = 1 log_bin = /data/mysql/mysql-bin.log thread_concurrency= 32 innodb_thread_concurrency = 32 character-set-server = utf8 innodb_write_io_threads =32 innodb_read_io_threads= 32 innodb_max_dirty_pages_pct= 90 #wait_timeout=600 #interactive_timeout = 600 [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash [myisamchk] key_buffer_size = 20M sort_buffer_size = 20M read_buffer = 2M write_buffer = 2M [mysqlhotcopy] interactive-timeout
3.啓動mysql進程
/etc/init.d/mysql start
至此，該項目完成部署，解析域名在VIP，即可。