利用docker 单机测试nginx的5种负载均衡

#利用docker测试nginx负载均衡

#系统centos 7.x——64

#创建yum备份文件夹

mkdir -p /etc/yum.repos.d/backup/

#备份系统原有yum源（作为运维要养成随手备份习惯）

mv -f /etc/yum.repos.d/* /etc/yum.repos.d/backup/ >/dev/null 2>&1

#使用阿里云yum源

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

yum clean all

yum makecache

#下载docker特定版本

wget https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/edge/Packages/docker-ce-17.06.2.ce-1.el7.centos.x86_64.rpm

#yum安装docker 17.06

yum localinstall docker-ce-17.06.2.ce-1.el7.centos.x86_64.rpm -y

#启动docker

systemctl restart docker

#配置镜像加速器 下载docker镜像更快，要不然是龟速

sudo mkdir -p /etc/docker

sudo tee /etc/docker/daemon.json <<-'EOF'

{

"registry-mirrors": ["https://9mmj7d8t.mirror.aliyuncs.com"]

}

EOF

sudo systemctl daemon-reload

sudo systemctl restart docker

#docker拉取nginx镜像

docker pull nginx

mkdir -p /mydata/test1

mkdir -p /mydata/test2

vim /mydata/test1/index.html

nginx1

vim /mydata/test2/index.html

nginx2

#启动两个镜像

docker run --name nginx-test -d -p 8080:80 -v /mydata/test1:/usr/share/nginx/html nginx

docker run --name nginx-test1 -d -p 8081:80 -v /mydata/test2:/usr/share/nginx/html nginx

yum install -y nginx

#安装之后就可以测试nginx的几种负载

1、轮询（默认）2、weight 3、ip_hash 4、fair（第三方）5、url_hash（第三方）

#下面给出一个实例

vim /etc/nginx/nginx.conf

http{

upstream web_servers1 {

server 127.0.0.1:8080 weight=1;

server 127.0.0.1:8081 weight=1;

}

location / {

root /usr/share/nginx/html;

index index.html indes.htm;

proxy_pass http://web_servers1;

}