下载安装nginx所用的依赖
yum -y install gcc zlib zlib-devel pcre-devel openssl openssl-devel
下载nginx
wget http://nginx.org/download/nginx-1.12.2.tar.gz
tar -xvf nginx-1.12.2.tar.gz
稍后安装nginx
安装lua语言
yum install readline-devel
curl -R -O http://www.lua.org/ftp/lua-5.3.0.tar.gz
tar zxf lua-5.3.0.tar.gz
cd lua-5.3.0
make linux test
make install
安装LuaJIT,安装路径/opt/luaJIT-2.1.0自行设置
wget http://luajit.org/download/LuaJIT-2.1.0-beta2.tar.gz
tar zxf LuaJIT-2.1.0-beta2.tar.gz
cd LuaJIT-2.1.0-beta2
make PREFIX=/opt/luaJIT-2.1.0
make install PREFIX=/opt/luaJIT-2.1.0
设置环境变量
打开:vi /etc/profile
export LUAJIT_LIB=/opt/luaJIT-2.1.0/lib
export LUAJIT_INC=/opt/luaJIT-2.1.0/include/luajit-2.1
保存:. /etc/profile
下载ngx_devel_kit(NDK)模块 :https://github.com/simpl/ngx_devel_kit/tags,不需要安装,记住存放位置/opt/luaJIT-2.0.5/package/ngx_devel_kit-0.2.19路径
wget https://github.com/simpl/ngx_devel_kit/archive/v0.2.19.tar.gz
tar -xzvf v0.2.19.tar.gz
cd /opt/luaJIT-2.1.0
mkdir package
mv ngx_devel_kit-0.2.19 /opt/luaJIT-2.0.5/package/
下载最新的lua-nginx-module 模块 :https://github.com/openresty/lua-nginx-module/tags,不需要安装,记住存放位置/opt/luaJIT-2.0.5/package/lua-nginx-module-0.10.13路径
注意:一定要下载0.10.13版本,其他版本可能会报错
wget https://github.com/openresty/lua-nginx-module/archive/v0.10.13.tar.gz
tar -xzvf v0.10.13.tar.gz
mv lua-nginx-module-0.10.13 /opt/luaJIT-2.0.5/package/
# 进入安装包目录
cd
cd nginx-1.12.2
在nginx中编译,/opt/nginx-1.12.2为安装路径,–add-module后面加上面下载的两个包的位置
./configure --prefix=/opt/nginx-1.12.2 --with-http_stub_status_module --with-http_ssl_module --add-module=/opt/luaJIT-2.0.5/package/lua-nginx-module-0.10.13 --add-module=/opt/luaJIT-2.0.5/package/ngx_devel_kit-0.2.19
修改Makefile文件,防治报错
cd /opt/nginx-1.12.2
找到当前目录下找到objs文件夹,并进入,打开文件Makefile,找到有一下内容的这行:
打开:vi objs/Makefile
CFLAGS = -pipe -O -W -Wall -Wpointer-arith -Wno-unused-parameter -Werror -g
-Werror: gcc将所有的警告当成错误进行处理把这行内容中的 “-Werror”去掉
CFLAGS = -pipe -O -W -Wall -Wpointer-arith -Wno-unused-parameter -g
保存:Esc,ZZ
回到上一级目录,进行安装
cd /opt/nginx-1.12.2
make && make install
要在bash中执行echo $SHELL
需要是/bin/bash如果是其他的,执行bash
,切换到bash
配置nginx的环境变量
打开:vi /etc/profile
export NGINX_HOME=/opt/nginx-1.12.2
export PATH=$PATH:$NGINX_HOME/sbin
保存:. /etc/profile
查看结果
nginx -V
nginx version: nginx/1.12.2
built by gcc 8.3.1 20190311 (Red Hat 8.3.1-3) (GCC)
built with OpenSSL 1.0.2k-fips 26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/opt/nginx-1.12.2 --with-http_stub_status_module --with-http_ssl_modu
le --add-module=/opt/luaJIT-2.0.5/package/lua-nginx-module-0.10.13 --add-module=/opt/luaJIT-2.0.5/package/ngx_devel_kit-0.2.19
看看有没有断开的链接,如果有的话,自己连一下
ldd $(which /opt/nginx-1.12.2/sbin/nginx)
假如有 libluajit-5.1.so.2 => not found
通过观察,我们知道, libluajit-5.1.so.2 在/opt/luaJIT-2.0.5/lib/中
建立软链接
cd /lib64
ln -s /opt/luaJIT-2.0.5/lib/libluajit-5.1.so.2 libluajit-5.1.so.2
刷新lib库
ldconfig
配置服务
cd /usr/lib/systemd/system/
新建服务nginx.service
vi /usr/lib/systemd/system/nginx.service
输入以下内容,注意路径/opt/nginx-1.12.2为自己的安装nginx的路径
[Unit]
Description=nginx - high performance web server
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
PIDFile=/opt/nginx-1.12.2/logs/nginx.pid
ExecStartPre=/opt/nginx-1.12.2/sbin/nginx -t -c /opt/nginx-1.12.2/conf/nginx.conf
ExecStart=/opt/nginx-1.12.2/sbin/nginx -c /opt/nginx-1.12.2/conf/nginx.conf
ExecReload=/opt/nginx-1.12.2/sbin/nginx -s reload
ExecStop=/opt/nginx-1.12.2/sbin/nginx -s stop
ExecQuit=/opt/nginx-1.12.2/sbin/nginx -s quit
PrivateTmp=true
[Install]
WantedBy=multi-user.target
在启动服务之前,需要先重载systemctl命令
systemctl daemon-reload
启动和开机自启
#启动服务或者使用systemctl start nginx
systemctl start nginx.service
#运行以下命令设置Nginx服务开机自启动
systemctl enable nginx
获取当前hadoop-ha集群的状态,例如有两台namenode,ip地址分别是192.168.206.215和192.168.206.216,那么如果192.168.206.215是active,那么下面返回active,如果是192.168.206.216是active,那么返回standby
wget -qO- http://192.168.206.215:50070/jmx?qry=Hadoop:service=NameNode,name=NameNodeStatus | sed 's
/,/\n/g' | grep 'State' | sed 's/"State" : "//g' | sed 's/[" ]//g'
将上面代码放到一个文件中
cd
mkdir run_shell
cd /root/run_shell
vi hadoop-status
i ...
Esc ZZ
chnod +x ./hadoop-status
尝试运行确定无误
./hadoop-status
到nginx的配置文件下,进行配置
cd /opt/nginx-1.12.2/conf/
配置nginx-conf,其中/root/run_shell/hadoop-status为脚本执行的路径,/tmp/hadoop-status.tmp是随便的一个文件,避免文件名冲突,注意是>不是追加>>,access_by_lua_block是lua脚本,需要要安装上面的带有lua脚本的nginx,ngx.log(ngx.ERR, result)是日志信息,调试的时候用,可以删掉,代码可以简化,懒得弄了,user root root;是用户名和组,一定要和hadoop-status脚本权限对应,否则会没有访问执行权限,proxy_pass http://node15:50070;
是重定向的hadoop-web页面,自行设置,如果报错,执行lua进入命令行,一行一行的执行,看哪里出了问题,退出lua-shell直接Ctrl+C,或者看nginx下面的logs文件中的error报错日志
vi nginx.conf
worker_processes 1;
user root root;
events {
worker_connections 1024;
}
http {
server {
listen 80;
server_name localhost;
location / {
access_by_lua_block {
os.execute("/bin/bash /root/run_shell/hadoop-status > /tmp/hadoop-status.tmp")
handle = io.open("/tmp/hadoop-status.tmp", "r")
result = handle:read("*a")
handle:close()
sentinel_result = result:match("active") and "active" or "standby"
ngx.log(ngx.ERR, result)
ngx.log(ngx.ERR, sentinel_result)
ngx.log(ngx.ERR, "123")
if sentinel_result == "active" then
ngx.exec("@node1")
else
ngx.exec("@node2")
end
}
}
location @node1 {
proxy_pass http://node15:50070;
}
location @node2 {
proxy_pass http://node16:50070;
}
}
}
重启nginx文章来源:https://www.toymoban.com/news/detail-692601.html
systemctl restart nginx.service
访问localhost:80即可直接跳转到active的hadoop-ha上
如果是虚拟机,则在主机上访问虚拟机的ip地址即可访问文章来源地址https://www.toymoban.com/news/detail-692601.html
到了这里,关于使用nginx-lua配置统一url自动跳转到hadoop-ha集群的active节点的文章就介绍完了。如果您还想了解更多内容,请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章,希望大家以后多多支持TOY模板网!