Linux系统架构
1.1 HA集群配置-1
iptables -F
getenforce
iptables -nvL
hostname
vim /etc/hosts 添加
192.168.1.33 mastar
192.168.1.199 slace
wget www.lishiming.net/data/p_w_upload/forum/epel-release-6-8_32.noarch.rpm
rpm -ivh epel-release-6-8_32.noarch.rpm
yum -y install heartabeat
yum install -y libnet
1.2 HA集群配置-2
cd /usr/share/
cd /usr/share/doc/heartbeat-3.0.4/
cp authkeys ha.cf haresources /etc/ha.d
cd /etc/ha.d/
cd /etc/ha.d
vim authkeys
修改 auth 3
下面把 3 md5 Hello! 前面# 去掉
chmod 600 authkeys
master 192.168.1.34/24/eth0:0 nginx 配置一个虚拟网卡地址
虚拟网卡ip 配置
cd /etc/sysconfig/network-scripts/
ls
cp ifcfg-eth0 ifcfg-eth0\:1
vim !$
DECICE=eth0:1
#HWADDR=
IPADDR=192.168.1.34
#UUID
#GATEWAY
/etc/init.d/network restart
vim ha.cf
debugfile /var/log/ha-debug
logfile /var/log/ha-log
logfacility localo
keepalive 2
deadtime 30
warntime 10
initdead 60
udpport 694
ucast eth1 192.168.1.33
auto_failback on
node master
node slave
ping 192.168.1.1
respawn hacluster /usr/lib/heartbeat/ipfail
scp authkeys haresources ha.cf slave:/etc/ha.d/
从 配置
cd /etc/ha.d
vim ha.cf
ip
yum install -y nginx
1.3 HA集群配置-3
启动顺序 先启动主 再启动从
/etc/init.d/heartbeat start 主
ps aux |grep nginx
/etc/init.d/heartbeat start 从
echo "11111111master" > /usr/share/nginx/html/index.html
iptables -A INPUT -P icmp -j DROP
tail /var/log/ha-log
iptables -D INPUT -P icmp -j DROP
/etc/init.d/heartbeat stop
LB集群之LVS介绍
LVS的NAT模式
hostname dir
hostname rs1
hostname rs2
dir
yum install -y ipvsadm
vi /usr/local/sbin/lvs_nat.sh
添加配置
sh /usr/local/sbin/lvs_nat.sh
ipvsadm -ln
rs1
vi/etc/../ifcfg-etho
指定网关192.168.21.190
rs2 同样
curl 192.168.1.190
LVS的DR设置
先删除之前的配置信息 网关改会以前的
ipvsadm -ln
ipvsadm -c
iptables -t nat -F
LVS结合keepalived配置
1.8 nginx的负载均衡集群
cd /usr/local/nginx/conf/vhosts/
vim lb.conf
upstream aming {
server 192.168.1.33:80 weight=2;
server 192.168.1.199:80 weight=1;
}
tream aming {
server 192.168.1.33:80 weight=2;
server 192.168.1.199:80 weight=1;
}
server {
listen 80;
server_name www.123.com;
location / {
proxy_pass http://aming/;
proxy_set_header Host $host;
}
}
/etc/init.d/nginx restart
curl -xlocalhost:80 www123.com
