我是靠谱客的博主 紧张玉米，最近开发中收集的这篇文章主要介绍haproxy+keepalived实现hiveserver2负载均衡（源码和yum安装haproxy+keepalived)1. 准备工作2. Haproxy安装(源码安装)3.centos7 yum安装Haproxy / keepalived （两台机器），觉得挺不错的，现在分享给大家，希望可以做个参考。
概述
1. 准备工作
yum install gcc gcc-c++ make openssl-devel kernel-devel2. Haproxy安装(源码安装)
本次安装使用的版本是 haproxy-1.5.14.tar.gz
1. 解压
我的目录是/usr/local/bigdata/下
tar -zvxf haproxy-1.5.14.tar.gz2. 进入解压目录 cd haproxy-1.5.14
make TARGET=linux310 CPU=x86_64 PREFIX=/usr/local/haproxy USE_OPENSSL=1 ADDLIB=-lzlinux310 CPU=x86_64 310和*86_64 根据 命令 uname -r确定
/usr/local/haproxy是 安装路径
ldd haproxy | grep ssl
make install PREFIX=/usr/local/haproxy##/usr/local/bigdata是我的解压目录
mkdir -p /usr/local/haproxy/conf
mkdir -p /etc/haproxy
cp /usr/local/bigdata/haproxy-1.5.14/examples/option-http_proxy.cfg /usr/local/haproxy/conf/haproxy.cfg
ln -s /usr/local/haproxy/conf/haproxy.cfg /etc/haproxy/haproxy.cfg
cp -r /usr/local/bigdata/haproxy-1.5.14/examples/errorfiles /usr/local/haproxy/errorfiles
ln -s /usr/local/haproxy/errorfiles /etc/haproxy/errorfiles
mkdir -p /usr/local/haproxy/log
touch /usr/local/haproxy/log/haproxy.log
ln -s /usr/local/haproxy/log/haproxy.log /var/log/haproxy.log
cp /usr/local/bigdata/haproxy-1.5.14/examples/haproxy.init /etc/rc.d/init.d/haproxy
chmod +x /etc/rc.d/init.d/haproxy
chkconfig haproxy on
ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin3. 配置文件 haproxy 具体参数
##复制的时候需要把 #注释的去掉
global
log 127.0.0.1 local2
chroot /usr/local/haproxy #haproxy安装目录
maxconn 4000
user haproxy
group haproxy
daemon
defaults
mode tcp
log global
option dontlognull
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 600
listen hive2 *:3308
mode tcp
balance roundrobin
maxconn 1024
server hive_1 172.20.3.102:10000 check inter 180000 rise 1 fall 2
server hive_2 172.20.3.103:10000 check inter 180000 rise 1 fall 2
listen stats
mode http
bind :6677
stats enable
stats hide-version
stats uri /haproxyadmin?stats
stats realm Haproxy Statistics
stats auth admin:admin #登录网页所需的账号密码
stats hide-version
4.启停
service haproxy start #启动
service haproxy stop #关闭
service haproxy restart #重启
service haproxy status #查看服务状态
web页面查看
http://172.20.3.102:6677/haproxyadmin?stats
5. 报错 启动haproxy报错 [: =: unary operator expected
如果启动HAProxy出现 /etc/rc.d/init.d/haproxy: line 26: [: =: unary operator expected 这个错误，修改/etc/init.d/haproxy 文件的26行 [ ${NETWORKING} = "no" ] && exit 0 为 [ "${NETWORKING}" = "no" ] && exit 0
3.centos7 yum安装Haproxy / keepalived （两台机器）
yum install -y haproxy keepalived版本 haproxy-1.5.18-8.el7.x86_64 keepalived-1.3.5-8.el7_6.x86_64
3.1 Haproxy配置 （两台机器相同）
cd /etc/haproxy/ vim haproxy.cfg
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats
defaults
mode tcp
log global
option dontlognull
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 600
listen hive2
bind *:3308
mode tcp
balance roundrobin
maxconn 1024
server hive_1 172.20.3.102:10000 check inter 180000 rise 1 fall 2
server hive_2 172.20.3.103:10000 check inter 180000 rise 1 fall 2
listen stats
mode http
bind :6677
stats enable
stats hide-version
stats uri /haproxyadmin?stats
stats realm Haproxy Statistics
stats auth admin:admin
stats hide-version 3.2 keepalived 配置（主从配置）
（主节点 172.20.3.102）cd /etc/keepalived vim /keepalived.cfg
! Configuration File for keepalived
global_defs {
router_id 172.20.3.102
}
vrrp_script chk_haproxy {
script "/etc/keepalived/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_haproxy
}
virtual_ipaddress {
172.20.3.112
}
}
（从节点 172.20.3.103）cd /etc/keepalived vim /keepalived.cfg
Configuration File for keepalived
global_defs {
router_id 172.20.3.103
}
vrrp_script chk_haproxy {
script "/etc/keepalived/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_haproxy
}
virtual_ipaddress {
172.20.3.112
}
}
vim check_haproxy.sh（两个节点相同）
sleep时间稍微久一点，haproxy启动需要点时间
#!/bin/bash
A=`ps -C haproxy --no-header | wc -l`
if [ $A -eq 0 ];then
/etc/init.d/haproxy start
sleep 8
if [ `ps -C haproxy --no-header | wc -l ` -eq 0 ];then
/etc/init.d/keepalived stop
fi
fi
chmod +x /etc/keepalived/check_haproxy.sh
3.3 启动
systemctl daemon-reload
systemctl enable haproxy
systemctl enable keepalived
systemctl start haproxy
systemctl start keepalived
#查看状态
systemctl status keepalived
systemctl status haproxyip a查看keepalived主节点，可以看到虚拟ip在该节点上
使用虚拟ip，不用主从节点得ip来访问 haproxy
在check_haproxy.sh文件中，如果haproxy挂掉且没拉起来，主节点的keepalived也会停掉，此时虚拟ip会飘到从节点，由从节点的haproxy继续提供负载均衡服务
3.4 报错解决
3.4.1 cannot bind socket [0.0.0.0:3308]
设置haproxy连接策略 执行 setsebool -P haproxy_connect_any=1
3.4.2 Popt libraries is required
执行 yum install popt-devel
最后
以上就是紧张玉米为你收集整理的haproxy+keepalived实现hiveserver2负载均衡（源码和yum安装haproxy+keepalived)1. 准备工作2. Haproxy安装(源码安装)3.centos7 yum安装Haproxy / keepalived （两台机器）的全部内容，希望文章能够帮你解决haproxy+keepalived实现hiveserver2负载均衡（源码和yum安装haproxy+keepalived)1. 准备工作2. Haproxy安装(源码安装)3.centos7 yum安装Haproxy / keepalived （两台机器）所遇到的程序开发问题。
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