私有云盘：lamp部署nextcloud+高可用集群

vim /etc/my.cnf
server-id=1
log-bin=mysql-bin
log-slave-updates=ture
character-set-server=utf8
binlog-format = mixed

初始化数据库
mysql_secure_installation
创建hy用户
grant replication slave on *.* to 'hy'@'192.168.150.%' identified by '123456';(用于远程登录数据库)
show master status;

2）从的操作
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
server-id=2                 #另一个从改为3
relay-log=relay-log-bin
relay-log-index=slave-relay-bin.index
character-set-server=utf8
binlog-format = mixed
重置数据库
systemctl start mariadb
mysql_secure_installation
mysql -u root -p"123.com"
设置授权
stop slave;
CHANGE MASTER TO MASTER_HOST='192.168.150.107',MASTER_USER='hy',MASTER_PASSWORD='123456',MASTER_LOG_FILE='mysql-bin.000003',MASTER_LOG_POS=1484;
start slave;
show slave status\G;

mkdir /share ##创建共享目录
vim /etc/exports
/share 192.168.150.0/24(rw,sync,no_root_squash)
启动
systemctl enable --now nfs
systemctl enable --now rpcbind
查看可用的共享目录
exportfs
showmount -e

yum -y install httpd
systemctl enable --now httpd
挂载共享目录
yum -y install nfs-utils
yum -y install rpcbind
systemctl enable --now nfs
showmount -e 192.168.150.106
mount 192.168.150.106:/share /var/www/html/

vim /etc/httpd/conf/httpd.conf
<Directory "/var/www/html/nextcloud">
Require all granted
AllowOverride All
Options FollowSymLinks MultiViews
<IfModule mod_dav.c>
Dav off
</IfModule>
</Directory>

unzip nextcloud-22.2.0.zip
cp nextcloud /share/ -R
useradd -s /sbin/nologin -M apache
chown apache.apache /share
chmod 777 /share

vim /etc/nginx/nginx.conf
在http字段下插入
 upstream nextcloud {
        ip_hash;
        server 192.168.150.104:80;
        server 192.168.150.105:80;
}
 server {
    listen 80;
    server_name nextcloud1;
    location / {
        proxy_pass http://192.168.150.104;
    }
}
server {
    listen 80;
    server_name nextcloud2;
    location / {
        proxy_pass http://192.168.150.105;
    }
}

##下载HAproxy
wget https://www.haproxy.org/download/1.7/src/haproxy-1.7.2.tar.gz
##解压
tar -xf haproxy-1.7.2.tar.gz 
##进入目录
cd haproxy-1.7.2/
##编译（没有gcc请先安装）
make PREFIX=/usr/local/haproxy TARGET=linux2628
make install PREFIX=/usr/local/haproxy

从haproxy的源码包中的examples下的init.haproxy中获得配置文件的路径“/etc/haproxy/haproxy.cfg”
mkdir /etc/haproxy
touch /etc/haproxy/haproxy.cfg
vim /etc/haproxy/haproxy.cfg
##插入
global #全局属性
    daemon  #以daemon方式在后台运行
    maxconn 256  #最大同时256连接
    pidfile /home/ha/haproxy/conf/haproxy.pid  #指定保存HAProxy进程号的文件
defaults #默认参数
    mode http  #http模式
    timeout connect 5000ms  #连接server端超时5s
    timeout client 50000ms  #客户端响应超时50s
    timeout server 50000ms  #server端响应超时50s
frontend http-in #前端服务http-in
    bind *:88  #监听88端口（不修改会与nginx冲突）
    default_backend Nginxservers  #请求转发至名为"servers"的后端服务
backend Nginxservers #后端服务servers
    server server1 192.168.150.102:80 maxconn 32  #backend servers中只有一个后端服务，名字叫server1，起在本机的80端口，HAProxy同时最多向这个服务发起32个连接
server server2 192.168.150.103:80 maxconn 32  #backend servers中只有一个后端服务，名字叫server2，起在本机的80端口，HAProxy同时最多向这个服务发起32个连接

cp /root/haproxy-1.7.2/examples/haproxy.init /etc/init.d/haproxy
vim  /etc/init.d/haproxy
修改： 35行 内容为 BIN=/usr/local/haproxy/sbin/$BASENAME
chmod +x /etc/init.d/haproxy
chkconfig --add /etc/init.d/haproxy
##添加3和5运行级别下自启动
chkconfig haproxy --level 35 on
chkconfig --list 
service haproxy start