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ĸҴʹüȺվ߲ijֶνϣܹʵдһİؾ漰ĶȽ϶࣬Ҳ࣬кܶ鼮ǾVecloudҵۼƵľһ
ǰ
ʹüȺվ߲ijֶΡһ̨ƷĴ洢ռ䲻ʱҪͼȥǿķԴվԣܶôǿķ㲻վҵ£ǡһֵ̨ԭзķʼ洢ѹͨؾȷķַӦ÷Ⱥеκһ̨ϣиûڼȺмӦ÷ʹӦƷĸѹٳΪվƿ
192.168.0.221nginx + keepalived master
192.168.0.222nginx + keepalived backup
192.168.0.223tomcat
192.168.0.224tomcat
ip(VIP):192.168.0.200ṩipҲɳip
֮Ĺϵͼ£
tomcatӦ÷
tomcatİװڱͷΧ֮ڣɲοvirtualBoxװcentostomcattomcatwebapps¼ǵ÷ԼӦãҵmyWebҲҵmyWebôindex.jspеipҪԼ
192.168.0.223192.168.0.224ϵtomcattomcat·ܺҵIJһ£ҪдԼ
# cd /usr/local/tomcat7/bin
# ./startup.sh
myWeb
nginxؾ
nginxİװľͲˣɲοLVS + keepalived + nginx + tomcat ʵȱ + ؾ
nginx.conf
ƴ
user root; #û
worker_processes 1; #,ͨóɺcpu
#ȫִ־PIDļ
error_log /usr/local/nginx/logs/error.log;
error_log /usr/local/nginx/logs/error.log notice;
error_log /usr/local/nginx/logs/error.log info;
pid /usr/local/nginx/logs/nginx.pid;
ģʽ
events
{
use epoll; #epollǶ·IO(I/O Multiplexing)еһַʽ,ǽlinux2.6ں,Դnginx
worker_connections 1024; #̨worker process̵}
#趨http,ķṩؾ֧
http
{
include mime.types;
default_type application/octet-stream;
#趨server_names_hash_bucket_size 128;client_header_buffer_size 32K;large_client_header_buffers 4 32k;# client_max_body_size 8m;#sendfile ָָ nginx Ƿ sendfile zero copy ʽļͨӦã#Ϊ on,صӦôIOظӦãΪ offƽI/Oٶȣϵͳuptime.sendfile on;tcp_nopush on;tcp_nodelay on;#ӳʱʱkeepalive_timeout 65;#gzipѹʹgzip on;gzip_min_length 1k;gzip_buffers 4 16k;gzip_http_version 1.1;gzip_comp_level 2;gzip_types text/plain application/x-javascript text/css application/xml;gzip_vary on;#tomcatбʵӦ÷upstream tomcat_pool { #server tomcatַ:˿ں weightʾȨֵȨֵԽļԽ;server 192.168.0.223:8080 weight=4 max_fails=2 fail_timeout=30s;
server 192.168.0.224:8080 weight=4 max_fails=2 fail_timeout=30s;
}
server { listen 80; #˿ server_name localhost;#Ĭlocation / { proxy_pass http://tomcat_pool; #תtomcat}#еjspҳtomcatlocation ~ \.(jsp|jspx|dp)?${ proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_pass http://tomcat_pool; #תtomcat}#еľ̬ļֱӶȡtomcat,nginxԼlocation ~ .*\.(htm|html|gif|jpg|jpeg|png|bmp|swf|ioc|rar|zip|txt|flv|mid|doc|ppt|pdf|xls|mp3|wma)$ { expires 30d;}location ~ .*\.(js|css)?${ expires 1h;}#ʾҳ error_page 500 502 503 504 /50x.html; location = /50x.html { root html; }}}
ƴ
nginxļȫһnginx.confÿɸӿɼҸԼãհҲǿԵġ
úúnginx·ҪдԼ
# cd /usr/local/nginx/sbin
# ./nginx
nginxЧ£
̨nginxʱûֵ֮ģһߣkeepalived֮֮ˡ
keepalivedʵnginx߿(HA)
keepalivedİװľͲˣɲοȱ+ؾ⣨LVS + keepalived
keepalivedʵڵһͼѾ֣ҪãʵVIPipӳ䣻 Լnginx״̬
masterϵkeepalived.conf£
ƴ
global_defs {
notification_email {[email protected]
br/>[email protected]<br/}
notification_email_from [email protected]
smtp_server smtp.hysec.com
smtp_connection_timeout 30
router_id nginx_backup # nginx backupidһӦΨһ
}
vrrp_script chk_http_port {
script "/usr/local/src/check_nginx_pid.sh"
interval 2 #űִеļ
weight 2
}
vrrp_instance VI_1 {
state BACKUP # ָkeepalivedĽɫMASTERΪBACKUPΪ
interface eth0 # ǰvrrpͨѶӿڿ(ǰcentos)
virtual_router_id 66 # ·ɱţҪһֱ
priority 99 # ȼֵԽȡȼԽ
advert_int 1 # ĬΪ1s(vrrp鲥)
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_http_port #üű
}
virtual_ipaddress {
192.168.0.200 # ip(VIP)ɶ裬ÿһ
}
}
ƴ
nginxűcheck_nginx_pid.sh£
ƴ
#!/bin/bash
A=ps -C nginx --no-header |wc -l
if [ $A -eq 0 ];then
/usr/local/nginx/sbin/nginx #nginx
if [ ps -C nginx --no-header |wc -l -eq 0 ];then #nginxʧܣͣkeepalivedVIPת
killall keepalived
fi
fi
ƴ
keepalived
# service keepalived start
VIPЧ£
keepalived־Ϣ
master192.168.0.221
backup192.168.0.222
ǰmasterϵkeepalivedͣģ崻keepalived־
ԭmaster192.168.0.221
ԭbackup192.168.0.222
ͨVIPʷǰܲnginxл»ԭmaster192.168.0.221IJͲˣв
ע
1ִнűʱ/bin/sh^M: bad interpreter: ûǸļĿ¼
Ϊϵͳwindowswindows±༭ĽűпвɼַűļDOSʽ, ÿһеβԻسͻзʶ, ASCIIֱ0x0D, 0x0Aкְܶ취ļDOSʽĻUNIXʽ, MACʽ
vim filename
:set ff? #Կdosunix. ȷdosʽġ
:set ff=unix #ǿΪunixʽ, Ȼ˳
ٴнű
windows༭ļٿlinuxʱҪرע⣬⣬űҪִȨִУִļһֱ۱־ļɫ
2ؾýжԣЩỺ棬ûиؾЧβйȸͳƵ(ûǷǻԭ)360IEĸؾЧ
3
IP(VIP)keepalivedӳ䵽nginxnginxתtomcat磺
keepalivedip
VIPܻkeepalivedеijһ̨ϣҲֻеijһ̨ϣVIPķϵnginxmasterVIPڵķ崻ˣkeepalivedὫVIPתƵbackupϣbackupΪmaster
4VIPҲƸipǹipӳ䣬ṩ ipһԶip ⲿֱӷʲ˵ |
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