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                ## 2(50分)在題目1基礎上完成負載均衡及高可用的搭建并測試。搭建全網備份服務器備份所有的配置文件和數據庫的數據及存儲的數據。給出操作步驟 ### 負載均衡配置 lb01(10.0.0.5),lb02(10.0.0.6)上配置 #### 安裝nginx與web服務器上安裝方式相同 #### 配置nginx,用它做負載均衡 ~~~ worker_processes 1; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; sendfile on; keepalive_timeout 65; upstream server_pools { server 10.0.0.7:80 weight=1; server 10.0.0.8:80 weight=1; } server { listen 80; server_name bbs.etiantian.org; location / { proxy_pass http://server_pools; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } server { listen 80; server_name www.etiantian.org; location / { proxy_pass http://server_pools; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } server { listen 80; server_name blog.etiantian.org; location / { proxy_pass http://server_pools; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } } } ~~~ ### keepalived 高可用 lb01(10.0.0.5),lb02(10.0.0.6)上配置 #### 安裝并啟動 keepalived ~~~ yum install keepalived -y /etc/init.d/keepalived start mkdir /server/scripts/ -p cat >/server/scripts/check_lb.sh<<EOF #!/bin/bash if [ `ps -ef |grep nginx|grep -v grep` -eq 0 ];then /etc/init.d/keepalived stop fi EOF chmod +x /server/scripts/check_lb.sh ~~~ #### lb01配置文件 ~~~ cat > /etc/keepalived/keepalived.conf<<EOF global_defs { router_id LB01 } vrrp_script chekc_lb{ script "/server/scripts/chekc_lb.sh" interval 2 weight 2 } vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 51 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 10.0.0.3/24 dev eth0 label eth0:1 } track_script{ check_lb } } EOF ~~~ #### lb02配置文件 ~~~ cat > /etc/keepalived/keepalived.conf<<EOF global_defs { router_id LB02 } vrrp_script chekc_lb{ script "/server/scripts/chekc_lb.sh" interval 2 weight 2 } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 10.0.0.3/24 dev eth0 label eth0:1 } track_script{ check_lb } } EOF ~~~ ### 數據庫備份 ~~~ # 格式:mysqldump -h鏈接ip -P(大寫)端口 -u用戶名 -p密碼數據庫名>d:XX.sql(路勁) /server/scripts/database_backup.sh #!/bin/ash mkdir /database_bak -p $Time=$(date +%F) mysqldump -h172.16.1.51 -uroot -poldboy123 dedecms > /database_bak/dedecms_${Time}.sql; mysqldump -h172.16.1.51 -uroot -poldboy123 discuz > /database_bak/discuz_${Time}.sql; mysqldump -h172.16.1.51 -uroot -poldboy123 wordpress > /database_bak/wordpress_${Time}.sql; 定時任務 00 00 * * * /bin/sh /server/scripts/database_backup.sh >/dev/null 2>&1 ~~~ ### 全網備份 ~~~ 安裝配置rsync yum install rsync -y echo "123456" >/etc/rsync.password chmod 600 /etc/rsync.password 備份腳本 cat /server/scripts/backup.sh #!/bin/bash Ip=$(ifconfig eth1|awk -F "[ :]+" 'NR==2 {print $4}') Path=/backup User=rsync_backup Backup_server=172.16.1.41 Module=backup Password_file=/etc/rsync.password if [ $(date +%w) -eq 0 ]; then Time=$(date +%F_%w) else Time=$(date +%F) fi BackupPath=$Path/$Ip if [ ! -d $BackupPath ];then mkdir $BackupPath -p fi cd / &&\ tar zcfh $BackupPath/backup_$Time.tar.gz etc apps/nginx/html var/spool/cron/root database_bak &&\ md5sum $BackupPath/backup_$Time.tar.gz >$BackupPath/flag_$Time.log &&\ rsync -az $Path/ $User@${Backup_server}::${Module} --password-file=${Password_file} &&\ find /backup/ -type f -mtime +30 \( -name "*.log" -o -name "*.tar.gz" \) | xargs rm -f 定時任務 # 定時備份 by Z 00 02 * * * /bin/sh /server/scripts/backup.sh >/dev/null 2>&1 檢查備份腳本 cat /server/scripts/check_backup.sh #!/bin/bash IP=$(ifconfig eth1|awk -F "[:]+" 'NR==2{print $4}') Path=/backup if [ $(date +%w) -eq 0 ] then Time=$(date +%F_%w) else Time=$(date +%F) fi find /backup -type f -name "*flag*${Time}*.log" |xargs md5sum -c >> ${Path}/${Time}_result.log mail -s "${Time} backup result" 207150680@qq.com < ${Path}/${Time}_result.log find /backup/ -type f -mtime +180 -regextype 'posix-extended' ! -regex '.*_0.(tar.gz|log)' | xargs rm -f 定時任務 00 05 * * * /bin/sh /server/scripts/check_backup.sh >/dev/null 2>&1 ~~~
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