nginx負(fù)載均衡壓力測(cè)試并發(fā)session臺(tái)式機(jī)配置：雙核4G內(nèi)存
VM開(kāi)了三個(gè)虛擬機(jī)：一個(gè)做nginx服務(wù)器，設(shè)memory1G，ip:10.10.21.134;兩個(gè)做web服務(wù)器，使用的是自己裝的Q2A網(wǎng)站，memory都是1G，ip分別為：10.10.21.135,10.10.21.138
nginx.conf主要內(nèi)容：
worker_processes 2;
events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
#均衡
upstream webservers{
server 10.10.21.135 max_fails=3 fail_timeout=1s weight=1;
server 10.10.21.138 max_fails=3 fail_timeout=1s weight=1;
server 127.0.0.1:8080 backup;
#緩存
proxy_cache_path /nginx/cache/first levels=1:2:1 keys_zone=a:20m max_size=1g;
server {
listen 80;
server_name localhost;
location / {
proxy_pass http://webservers/;
proxy_set_header X-Real-IP $remote_addr;
proxy_connect_timeout 300;
proxy_read_timeout 300;
proxy_send_timeout 300;
proxy_cache a;
#js與css請(qǐng)求
location ~.*\.(gif|jpg|jpeg|png|bmp|swf|css|js)$
{
proxy_pass http://10.10.21.135;
}
}
}
apache2.conf的最主要配置：
Timeout 300
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
<IfModule mpm_prefork_module>
StartServers 5
MinSpareServers 5
MaxSpareServers 6
ServerLimit 550
MaxClients 500
MaxRequestsPerChild 10000
</IfModule>
HostnameLookups Off
使用webbench做測(cè)試時(shí)，60S并發(fā)1000時(shí)基本均衡，漏掉的請(qǐng)求也不是很多，60S并發(fā)1500做測(cè)試時(shí)，使用grep 'GET /' /var/log/nginx/access.log | grep '15/Sep/2014:19'|wc -l 命令對(duì)access.log做計(jì)算時(shí)結(jié)果如下：
nginx服務(wù)器：
兩個(gè)web：
結(jié)果漏了很多請(qǐng)求
error.log內(nèi)容：
nginx：2014/09/15 19:30:04 [error] 29561#0: *7668 connect() failed (110: Connection timed out) while connecting to upstream, client: 10.10.21.137, server: localhost, request: "GET / HTTP/1.0", upstream: "http://10.10.21.135:80/", host: "10.10.21.134"
135服務(wù)器：
[error] [client 10.10.21.134] PHP Notice: session_start(): ps_files_cleanup_dir: opendir(/var/lib/php5) failed: Permission denied (13) in /var/www/question2answer/qa-include/qa-app-users.php on line 150
138服務(wù)器：
[error] [client 10.10.21.134] request failed: error reading the headers
難道這就是極限了嗎？還是我的配置數(shù)據(jù)有問(wèn)題啊？
怎樣優(yōu)化nginx的配置呢？
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