nginx与tengine添加check模块（nginx_upstream_check_module）
1 nginx 在未安装nginx上编译安装check模块
[root@localhost ~]# wget https://github.com/yaoweibin/nginx_upstream_check_module/archive/v0.3.0.tar.gz [root@localhost ~]# tar xf v0.3.0 [root@localhost ~]# cd nginx_upstream_check_module-0.3.0 [root@localhost nginx_upstream_check_module-0.3.0]# ls -l total 260 -rw-rw-r-- 1 root root 0 Oct 2 2014 CHANGES -rw-rw-r-- 1 root root 5483 Oct 2 2014 check_1.2.1.patch -rw-rw-r-- 1 root root 7130 Oct 2 2014 check_1.2.2+.patch -rw-rw-r-- 1 root root 7094 Oct 2 2014 check_1.2.6+.patch -rw-rw-r-- 1 root root 6791 Oct 2 2014 check_1.5.12+.patch -rw-rw-r-- 1 root root 6701 Oct 2 2014 check_1.7.2+.patch -rw-rw-r-- 1 root root 6943 Oct 2 2014 check.patch -rw-rw-r-- 1 root root 749 Oct 2 2014 config drwxrwxr-x 2 root root 4096 Oct 2 2014 doc -rw-rw-r-- 1 root root 1709 Oct 2 2014 nginx-sticky-module.patch drwxrwxr-x 2 root root 4096 Oct 2 2014 nginx-tests -rw-rw-r-- 1 root root 46860 Oct 2 2014 ngx_http_upstream_check_handler.c -rw-rw-r-- 1 root root 3718 Oct 2 2014 ngx_http_upstream_check_handler.h -rw-rw-r-- 1 root root 112230 Oct 2 2014 ngx_http_upstream_check_module.c -rw-rw-r-- 1 root root 529 Oct 2 2014 ngx_http_upstream_check_module.h -rw-rw-r-- 1 root root 2848 Oct 2 2014 ngx_http_upstream_jvm_route_module.patch -rw-rw-r-- 1 root root 11384 Oct 2 2014 README drwxrwxr-x 6 root root 4096 Oct 2 2014 test -rw-rw-r-- 1 root root 3342 Oct 2 2014 upstream_fair.patch drwxrwxr-x 2 root root 4096 Oct 2 2014 util [root@localhost nginx-1.8.1]# patch -p1 < ../nginx_upstream_check_module-0.3.0/check_1.7.2+.patch patching file src/http/modules/ngx_http_upstream_ip_hash_module.c patching file src/http/modules/ngx_http_upstream_least_conn_module.c patching file src/http/ngx_http_upstream_round_robin.c Hunk #1 succeeded at 9 with fuzz 2. Hunk #2 succeeded at 95 (offset 4 lines). Hunk #3 succeeded at 159 (offset 4 lines). Hunk #4 succeeded at 227 (offset 4 lines). Hunk #5 succeeded at 339 (offset 4 lines). Hunk #6 succeeded at 381 (offset 4 lines). Hunk #7 succeeded at 443 (offset 4 lines). Hunk #8 succeeded at 541 (offset -1 lines). patching file src/http/ngx_http_upstream_round_robin.h [root@localhost nginx-1.8.1]# ./configure --add-module=../nginx_upstream_check_module-0.3.0/ [root@localhost nginx-1.8.1]# make && make install make[1]: Leaving directory `/home/ceiec/nginx-1.8.1' [root@localhost nginx-1.8.1]# /usr/local/nginx/sbin/nginx -t nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful [root@localhost conf]# head -n 50 nginx.conf upstream 8080 { server 10.11.1.11:8080 weight=1; server 10.11.1.17:8080 weight=1; check interval=3000 rise=2 fall=2 timeout=1000 type=http;
2 编译安装tengine
[root@localhost ~]# tar -zxvf tengine-2.3.1.tar.gz [root@localhost tengine-2.3.1]# mkdir -p /opt/tengine [root@localhost tengine-2.3.1]# ./configure --prefix=/opt/tengine --without-http_upstream_keepalive_module \ --add-module=modules/ngx_backtrace_module \ --add-module=modules/ngx_debug_pool \ --add-module=modules/ngx_debug_timer \ --add-module=modules/ngx_http_concat_module \ --add-module=modules/ngx_http_footer_filter_module \ --add-module=modules/ngx_http_proxy_connect_module \ --add-module=modules/ngx_http_reqstat_module \ --add-module=modules/ngx_http_slice_module \ --add-module=modules/ngx_http_sysguard_module \ --add-module=modules/ngx_http_trim_filter_module \ --add-module=modules/ngx_http_upstream_check_module \ --add-module=modules/ngx_http_upstream_consistent_hash_module \ --add-module=modules/ngx_http_upstream_dynamic_module \ --add-module=modules/ngx_http_upstream_dyups_module \ --add-module=modules/ngx_http_upstream_keepalive_module \ --add-module=modules/ngx_http_upstream_session_sticky_module \ --add-module=modules/ngx_http_user_agent_module [root@localhost tengine-2.3.1]# make && make install [root@localhost conf]# /opt/tengine/sbin/nginx -V Tengine version: Tengine/2.3.1 nginx version: nginx/1.16.0 built by gcc 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) built with OpenSSL 1.0.1e-fips 11 Feb 2013 TLS SNI support enabled configure arguments: --prefix=/opt/tengine --without-http_upstream_keepalive_module --add-module=modules/ngx_backtrace_module --add-module=modules/ngx_debug_pool --add-module=modules/ngx_debug_timer --add-module=modules/ngx_http_concat_module --add-module=modules/ngx_http_footer_filter_module --add-module=modules/ngx_http_proxy_connect_module --add-module=modules/ngx_http_reqstat_module --add-module=modules/ngx_http_slice_module --add-module=modules/ngx_http_sysguard_module --add-module=modules/ngx_http_trim_filter_module --add-module=modules/ngx_http_upstream_check_module --add-module=modules/ngx_http_upstream_consistent_hash_module --add-module=modules/ngx_http_upstream_dynamic_module --add-module=modules/ngx_http_upstream_dyups_module --add-module=modules/ngx_http_upstream_keepalive_module --add-module=modules/ngx_http_upstream_session_sticky_module --add-module=modules/ngx_http_user_agent_module [root@localhost conf]# /opt/tengine/sbin/nginx -c /opt/tengine/conf/nginx.conf [root@localhost conf]# ps -ef|grep nginx root 8000 1 0 09:00 ? 00:00:00 nginx: master process /opt/tengine/sbin/nginx -c /opt/tengine/conf/nginx.conf root 8001 8000 0 09:00 ? 00:00:00 nginx: worker process root 8002 8000 0 09:00 ? 00:00:00 nginx: worker process root 8003 8000 0 09:00 ? 00:00:00 nginx: worker process root 8004 8000 0 09:00 ? 00:00:00 nginx: worker process root 8010 26644 0 09:00 pts/0 00:00:00 grep nginx [root@localhost keepalived]# /opt/tengine/sbin/nginx -c /opt/tengine/conf/nginx.conf -t nginx: the configuration file /opt/tengine/conf/nginx.conf syntax is ok nginx: configuration file /opt/tengine/conf/nginx.conf test is successful [root@localhost keepalived]# /etc/init.d/keepalived start [root@localhost keepalived]# ip a
3 在已经存在的nginx上面，添加check模块
[root@localhost nginx_upstream_check_module-0.3.0]# /usr/local/nginx/sbin/nginx -V nginx version: nginx/1.8.1 built by gcc 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC) configure arguments: [root@localhost nginx_upstream_check_module-0.3.0]# cd /home/ceiec/nginx-1.8.1 [root@localhost nginx-1.8.1]# patch -p1 < /home/test/nginx_upstream_check_module-0.3.0/check_1.7.2+.patch patching file src/http/modules/ngx_http_upstream_ip_hash_module.c patching file src/http/modules/ngx_http_upstream_least_conn_module.c patching file src/http/ngx_http_upstream_round_robin.c Hunk #1 succeeded at 9 with fuzz 2. Hunk #2 succeeded at 95 (offset 4 lines). Hunk #3 succeeded at 159 (offset 4 lines). Hunk #4 succeeded at 227 (offset 4 lines). Hunk #5 succeeded at 339 (offset 4 lines). Hunk #6 succeeded at 381 (offset 4 lines). Hunk #7 succeeded at 443 (offset 4 lines). Hunk #8 succeeded at 541 (offset -1 lines). patching file src/http/ngx_http_upstream_round_robin.h [root@localhost nginx-1.8.1]# ./configure --add-module=../nginx_upstream_check_module-0.3.0 [root@localhost nginx-1.8.1]# make ##注意：此处只make，编译参数需要和之前的一样,不要执行make install,否则就会覆盖正在使用的nginx) make[1]: Leaving directory `/home/test/nginx-1.8.1' make -f objs/Makefile manpage make[1]: Entering directory `/home/test/nginx-1.8.1' sed -e "s|%%PREFIX%%|/usr/local/nginx|" \ -e "s|%%PID_PATH%%|/usr/local/nginx/logs/nginx.pid|" \ -e "s|%%CONF_PATH%%|/usr/local/nginx/conf/nginx.conf|" \ -e "s|%%ERROR_LOG_PATH%%|/usr/local/nginx/logs/error.log|" \ < man/nginx.8 > objs/nginx.8 make[1]: Leaving directory `/home/ceiec/nginx-1.8.1' [root@localhost nginx-1.8.1]# /usr/local/nginx/sbin/nginx -t nginx: [emerg] unknown directive "check" in /usr/local/nginx/conf/nginx.conf:24 nginx: configuration file /usr/local/nginx/conf/nginx.conf test failed [root@localhost nginx-1.8.1]# /usr/local/nginx/sbin/nginx nginx: [emerg] unknown directive "check" in /usr/local/nginx/conf/nginx.conf:24
上面显示添加patch的时候，是添加成功，但是编译还是提示check错误
check模块语法
check interval=milliseconds [fall=count] [rise=count][timeout=milliseconds] [default_down=true|false][type=tcp|http|ssl_hello|mysql|ajp|fastcgi] check interval=5000 rise=1 fall=3 timeout=4000; #check interval=3000 rise=2 fall=5 timeout=1000 type=ssl_hello; #check interval=3000 rise=2 fall=5 timeout=1000 type=http; #check_http_send "HEAD / HTTP/1.0\r\n\r\n"; #check_http_expect_alive http_2xx http_3xx; 默认配置：interval=3000 fall=5 rise=2 timeout=1000 default_down=true type=tcp* interval： 检测间隔3秒 fall: 连续检测失败次数5次时，认定relaserver is down rise: 连续检测成功2次时，认定relaserver is up timeout: 超时1秒 default_down: 初始状态为down,只有检测通过后才为up type: 检测类型方式 tcp 1. tcp :tcp 套接字,不建议使用，后端业务未100%启动完成,前端已经放开访问的情况 2. ssl_hello： 发送hello报文并接收relaserver 返回的hello报文 3. http: 自定义发送一个请求，判断上游relaserver 接收并处理 4. mysql: 连接到mysql服务器，判断上游relaserver是否还存在 5. ajp: 发送AJP Cping数据包，接收并解析AJP Cpong响应以诊断上游relaserver是否还存活(AJP tomcat内置的一种协议) 6. fastcgi: php程序是否存活
check_http_send 指令 该指令可以让负载均衡器模拟向后端realserver发送，监控检测的http包，模拟LVS的检测。 check_http_expect_alive 指令 check_http_expect_alive [ http_2xx | http_3xx | http_4xx | http_5xx ] 返回指定HTTP code，符合预期就算检测成功
