LVS之-LAMP搭建wordpress
来源：互联网 发布：淘宝店铺代运营 编辑：程序博客网 时间：2024/06/05 19:32
author：JevonWei
版权声明：原创作品
LVS搭建wordpress，涉及的知识点有DNS，LAMP，NFS及LVS
- 网络拓扑图
网络环境
NFS 192.168.198.130mysql 192.168.198.132RS1 192.168.198.138RS2 192.168.198.120LVS： DIP 192.168.198.128 vip 172.16.253.105DNS 172.16.252.248Client 172.16.254.150RS1,RS2的网关指向192.168.198.128，client的DNS指向DNS服务器172.16.252.248VS
[root@VS ~]# iptables -F 添加路由转发选项[root@VS ~]# vim /etc/sysctl.d/99-sysctl.conf net.ipv4.ip_forward=1[root@VS ~]# sysctl -p /etc/sysctl.d/99-sysctl.conf \\刷新生效net.ipv4.ip_forward = 1 配置LVS的调度算法为rr轮询[root@VS ~]# yum -y install ipvsadm [root@VS ~]# ipvsadm -A -t 172.16.253.105:80 -s rr \\-t指定TCP协议，-s指定调度算法为轮询[root@VS ~]# ipvsadm -a -t 172.16.253.105:80 -r 192.168.198.138 -m \\添加192.168.198.138 RS1服务器到LVS调度，-m 为nat类型[root@VS ~]# ipvsadm -a -t 172.16.253.105:80 -r 192.168.198.120 -m [root@VS ~]# ipvsadm -Ln \\查看LVS调度信息IP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 172.16.253.105:80 rr -> 192.168.198.120:80 Masq 1 0 0 -> 192.168.198.138:80 Masq 1 0 0[root@VS ~]# curl 192.168.198.120welcome to RS2[root@VS ~]# curl 192.168.198.138welcome to RS1修改LVS的调度模式为wrr[root@VS ~]# ipvsadm -E -t 172.16.253.105:80 -s wrr[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 172.16.253.105:80 wrr -> 192.168.198.120:80 Masq 1 0 0 -> 192.168.198.138:80 Masq 1 0 0[root@VS ~]# ipvsadm -e -t 172.16.253.105:80 -r 192.168.198.138 -m -w 3 \\修改192.168.198.138 RS1主机的权重为3，-w 指定权重，-m为nat算法，192.168.198.120权重仍为1[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 172.16.253.105:80 wrr -> 192.168.198.120:80 Masq 1 0 0 -> 192.168.198.138:80 Masq 3 0 0 脚本实现lvs-wrr的配置[root@VS ~]# vim lvs_nat.sh #! /bin/bashvip=172.16.253.105:80rip1=192.168.198.138rip2=192.168.198.120:8080sch=wrrcase $1 instart) ipvsadm -A -t $vip -s $sch ipvsadm -a -t $vip -r $rip1 -m -w 3 ipvsadm -a -t $vip -r $rip2 -m -w 1 ;;stop) ipvsadm -C ;;*) echo "Usage:$(basename $0) start|stop" exit 1 ;;esacRS1
[root@RS1 ~]# iptables -F[root@RS1 ~]# yum -y install httpd[root@RS1 ~]# vim /var/www/html/index.html welcome to RS1[root@RS1 ~]# service httpd startRS2
[root@RS2 ~]# iptables -F[root@RS2 ~]# yum -y install httpd[root@RS2 ~]# vim /var/www/html/index.html welcome to RS2[root@RS2 ~]# service httpd start查看LVS的信息
[root@VS ~]# ipvsadm -Ln --statsIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Conns InPkts OutPkts InBytes OutBytes -> RemoteAddress:PortTCP 172.16.253.105:80 29 158 139 10710 15609 -> 192.168.198.120:80 15 82 69 5554 7923 -> 192.168.198.138:80 14 76 70 5156 7686[root@VS ~]# ipvsadm -Ln --connection \\查看网络连接数[root@VS ~]# cut -d " " -f1 /var/log/httpd/access_log | sort -nr | uniq -c| sort -n \\查看网络连接client
访问rr轮询算法[root@client ~]# for i in {1..10};do curl 172.16.253.105;sleep 1;done welcome to RS2welcome to RS1welcome to RS2welcome to RS1welcome to RS2访问wrr权重算法[root@client ~]# for i in {1..10};do curl 172.16.253.105;sleep 1;donewelcome to RS2welcome to RS1welcome to RS1welcome to RS1welcome to RS2welcome to RS1welcome to RS1welcome to RS1welcome to RS2welcome to RS1实现HTTPS加密
将VS服务端同时作为CA服务端，即VS同时作为CA服务端
搭建CA服务端环境
[root@VS ~]# cat /etc/pki/tls/openssl.cnf \\查看证书的相关路径[root@VS ~]# (umask 077;openssl genrsa -out /etc/pki/CA/private/cakey.pem 1024) \\生成私钥文件Generating RSA private key, 1024 bit long modulus.............++++++.........++++++e is 65537 (0x10001)[root@VS ~]# cd /etc/pki/CA[root@VS CA]# openssl req -new -x509 -key private/cakey.pem -out cacert.pem -days 1024 \\生成自签名证书You are about to be asked to enter information that will be incorporatedinto your certificate request.What you are about to enter is what is called a Distinguished Name or a DN.There are quite a few fields but you can leave some blankFor some fields there will be a default value,If you enter '.', the field will be left blank.-----Country Name (2 letter code) [XX]:CNState or Province Name (full name) []:henanLocality Name (eg, city) [Default City]:zhengzhouOrganization Name (eg, company) [Default Company Ltd]:danran.comOrganizational Unit Name (eg, section) []:itCommon Name (eg, your name or your server's hostname) []:ca.danran.comEmail Address []:[root@VS CA]# touch index.txt[root@VS CA]# echo 00 > serialRS1申请CA证书
[root@RS1 ~]# cd /etc/httpd/conf.d/[root@RS1 conf.d]# (umask 077;openssl genrsa -out httpd.key 1024)Generating RSA private key, 1024 bit long modulus........++++++...........++++++e is 65537 (0x10001)[[root@RS1 conf.d]# openssl req -new -key httpd.key -out httpd.csr -days 10You are about to be asked to enter information that will be incorporated into your certificate request.What you are about to enter is what is called a Distinguished Name or a DN.There are quite a few fields but you can leave some blankFor some fields there will be a default value,If you enter '.', the field will be left blank.-----Country Name (2 letter code) [XX]:CNState or Province Name (full name) []:henanLocality Name (eg, city) [Default City]:zhengzhouOrganization Name (eg, company) [Default Company Ltd]:danran.comOrganizational Unit Name (eg, section) []:itCommon Name (eg, your name or your server's hostname) []:ca.danran.comEmail Address []:Please enter the following 'extra' attributes to be sent with your certificate requestA challenge password []:An optional company name []:[root@RS1 conf.d]# scp httpd.csr 192.168.198.128:/etc/pki/CA \\证书申请文件发送给CA服务端CA服务端颁发证书
[root@VS CA]# openssl ca -in httpd.csr -out certs/httpd.crt -days 365Using configuration from /etc/pki/tls/openssl.cnfCheck that the request matches the signatureSignature okCertificate Details: Serial Number: 1 (0x1) Validity Not Before: Aug 19 13:00:12 2017 GMT Not After : Aug 19 13:00:12 2018 GMT Subject: countryName = CN stateOrProvinceName = henan organizationName = danran.com organizationalUnitName = it commonName = ca.danran.com X509v3 extensions: X509v3 Basic Constraints: CA:FALSE Netscape Comment: OpenSSL Generated Certificate X509v3 Subject Key Identifier: BB:DC:5C:85:69:2B:0A:41:98:3B:7F:3E:15:69:1D:2B:C3:81:3E:EF X509v3 Authority Key Identifier: keyid:91:15:B3:DB:2D:94:91:2E:12:87:26:ED:05:5E:08:78:E0:10:7C:F8[root@VS CA]# scp certs/httpd.crt 192.168.198.138:/etc/httpd/conf.d \\将证书文件颁发给RS1申请者[root@VS CA]# scp cacert.pem 192.168.198.138:/etc/httpd/conf.d \\将CA服务端证书发送给申请者RS1
[root@RS1 conf.d]# scp cacert.pem httpd.crt httpd.key 192.168.198.120:/etc/httpd/conf.d \\将RS1的证书、私钥及CA证书文件发送给RS2[root@RS1 ~]# yum -y install mod_ssl[root@RS1 ~]# vim /etc/httpd/conf.d/ssl.conf \\修改如下证书私钥、证书文件及CA证书文件的存放路径 SSLCertificateFile /etc/httpd/conf.d/httpd.crt SSLCertificateKeyFile /etc/httpd/conf.d/httpd.key SSLCACertificateFile /etc/httpd/conf.d/cacert.pem 修改后如下所示 # Server Certificate: # Point SSLCertificateFile at a PEM encoded certificate. If # the certificate is encrypted, then you will be prompted for a # pass phrase. Note that a kill -HUP will prompt again. A new # certificate can be generated using the genkey(1) command. SSLCertificateFile /etc/httpd/conf.d/httpd.crt # Server Private Key: # If the key is not combined with the certificate, use this # directive to point at the key file. Keep in mind that if # you've both a RSA and a DSA private key you can configure # both in parallel (to also allow the use of DSA ciphers, etc.) SSLCertificateKeyFile /etc/httpd/conf.d/httpd.key # Server Certificate Chain: # Point SSLCertificateChainFile at a file containing the # concatenation of PEM encoded CA certificates which form the # certificate chain for the server certificate. Alternatively # the referenced file can be the same as SSLCertificateFile # when the CA certificates are directly appended to the server # certificate for convinience. #SSLCertificateChainFile /etc/pki/tls/certs/server-chain.crt # Certificate Authority (CA): # Set the CA certificate verification path where to find CA # certificates for client authentication or alternatively one # huge file containing all of them (file must be PEM encoded) SSLCACertificateFile /etc/httpd/conf.d/cacert.pem[root@RS1 conf.d]# service httpd restartRS2
[root@RS2 ~]# cd /etc/httpd/conf.d/[root@RS2 conf.d]# lscacert.pem httpd.key php.conf welcome.confhttpd.crt mod_dnssd.conf README[root@RS2 conf.d]# yum -y install mod_ssl \\安装软件包[root@RS2 conf.d]# vim ssl.conf \\修改如下证书私钥、证书文件及CA证书文件的存放路径 SSLCertificateFile /etc/httpd/conf.d/httpd.crt SSLCertificateKeyFile /etc/httpd/conf.d/httpd.key SSLCACertificateFile /etc/httpd/conf.d/cacert.pem 修改后如下所示 # Server Certificate: # Point SSLCertificateFile at a PEM encoded certificate. If # the certificate is encrypted, then you will be prompted for a # pass phrase. Note that a kill -HUP will prompt again. A new # certificate can be generated using the genkey(1) command. SSLCertificateFile /etc/httpd/conf.d/httpd.crt # Server Private Key: # If the key is not combined with the certificate, use this # directive to point at the key file. Keep in mind that if # you've both a RSA and a DSA private key you can configure # both in parallel (to also allow the use of DSA ciphers, etc.) SSLCertificateKeyFile /etc/httpd/conf.d/httpd.key # Server Certificate Chain: # Point SSLCertificateChainFile at a file containing the # concatenation of PEM encoded CA certificates which form the # certificate chain for the server certificate. Alternatively # the referenced file can be the same as SSLCertificateFile # when the CA certificates are directly appended to the server # certificate for convinience. #SSLCertificateChainFile /etc/pki/tls/certs/server-chain.crt # Certificate Authority (CA): # Set the CA certificate verification path where to find CA # certificates for client authentication or alternatively one # huge file containing all of them (file must be PEM encoded) SSLCACertificateFile /etc/httpd/conf.d/cacert.pem[root@RS2 conf.d]# service httpd restartVS
[root@VS ~]# vim lvs_nat.sh #! /bin/bashvip=172.16.253.105:443rip1=192.168.198.138rip2=192.168.198.120sch=wrrcase $1 instart) ipvsadm -A -t $vip -s $sch ipvsadm -a -t $vip -r $rip1 -m -w 3 ipvsadm -a -t $vip -r $rip2 -m -w 1 ;;stop) ipvsadm -C ;;*) echo "Usage:$(basename $0) start|stop" exit 1 ;;esac[root@VS ~]# bash lvs_nat.sh stop[root@VS ~]# bash lvs_nat.sh start[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 172.16.253.105:443 wrr -> 192.168.198.120:443 Masq 1 0 0 -> 192.168.198.138:443 Masq 3 0 0client客户端
[root@client ~]# for i in {1..10};do curl -k https://172.16.253.105;done \\-k跳过证书welcome to RS1welcome to RS1welcome to RS1welcome to RS2welcome to RS1welcome to RS1welcome to RS1welcome to RS2welcome to RS1welcome to RS1LAMP搭建wordpress，并通过NFS共享
搭建DNS服务端
[root@DNS ~]# yum -y install bind[root@DNS ~]# systemctl restart named[root@DNS ~]# systemctl enable named Created symlink from /etc/systemd/system/multi-user.target.wants/named.service to /usr/lib/systemd/system/named.service.[root@DNS ~]# iptables -F配置DNS[root@DNS ~]# vim /etc/named.conf options { listen-on port 53 { localhost; }; allow-query { any; }; }[root@DNS ~]# vim /etc/named.rfc1912.zones zone "danran.com" IN { type master; file "danran.zone"; allow-update { none; }; };[root@DNS ~]# cd /var/named/[root@DNS named]# vim danran.zone $TTL 1D @ IN SOA dns.danran.com. admin ( 0 ; serial 1D ; refresh 1H ; retry 1W ; expire 3H ) ; minimum NS dns.danran.com. dns A 172.16.252.248 websrv A 172.16.253.105 www CNAME websrv[root@DNS named]# systemctl restart namedMYSQL
[root@mysql ~]# yum -y install mariadb-server[root@mysql ~]# systemctl start mariadb[root@mysql ~]# systemctl enable mariadbCreated symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.[root@mysql ~]# systemctl disable firewalldRemoved symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.[root@mysql ~]# systemctl stop firewalld[root@mysql ~]# iptables -F 关闭防火墙创建数据库账号[root@mysql ~]# mysql_secure_installation \\数据库安全初始化MariaDB [(none)]> create database blogdb; \\创建数据库blogdb表MariaDB [(none)]> grant all on blogdb.* to wpuser@'192.168.198.%' identified by 'danran'; \\创建wpuser用户，并授予blogdb表的所有权限登录测试[root@mysql ~]# mysql -uwpuser -h192.168.198.132 -p添加防火墙，仅允许RS1和RS2及自己本身连接数据库[root@mysql ~]# iptables -A INPUT -s 192.168.198.138 -p tcp --dport 3306 -j ACCEPT[root@mysql ~]# iptables -A INPUT -s 192.168.198.120 -p tcp --dport 3306 -j ACCEPT [root@mysql ~]# iptables -A INPUT -s 192.168.198.1 -p tcp --dport 3306 -j ACCEPT [root@mysql ~]# iptables -A INPUT -j REJECTNFS
[root@NFS app]# setenforce 0[root@NFS ~]# iptables -F[root@mysql ~]# systemctl disable firewalldRemoved symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.[root@mysql ~]# systemctl stop firewalld[root@NFS ~]# rpm -q nfs-utilsnfs-utils-1.3.0-0.33.el7.x86_64将wordpress上传到服务器，并配置wordpress[root@NFS app]# tar xvf wordpress-4.8-zh_CN.tar.gz \\解压wordpress[root@NFS app]# mv wordpress blog[root@NFS app]# cd blog/[root@NFS blog]# cp wp-config-sample.php wp-config.php [root@NFS blog]# vim wp-config.php // ** MySQL 设置 - 具体信息来自您正在使用的主机 ** // /** WordPress数据库的名称 */ define('DB_NAME', 'blogdb'); /** MySQL数据库用户名 */ define('DB_USER', 'wpuser'); /** MySQL数据库密码 */ define('DB_PASSWORD', 'danran'); /** MySQL主机 */ define('DB_HOST', '192.168.198.132');创建与RS1和RS2主机上相同UID的apache用户 [root@NFS blog]# useradd -u 48 -r -s /sbin/nologin apache \\RS1和RS2的apache用户UID为48修改blog目录的属组，从而使apache用户对blog有读写权限[root@NFS app]# chown -R apache.apache blog/[root@NFS app]# ll -d blog/drwxr-xr-x. 5 apache apache 4096 Aug 20 13:03 blog/配置NFS[root@NFS app]# vim /etc/exports /app/blog 192.168.198.0/24(rw,all_squash,anonuid=48,anongid=48) \\all_squash为压缩所有用户名，anonuid意为压缩为UID为48的用户，anongid组压缩为GID为48的组[root@NFS app]# systemctl restart nfs-serverRS1挂载NFS共享目录
[root@RS1 html]# setenforce 0[root@RS1 ~]# cd /var/www/html/[root@RS1 html]# mkdir blog[root@RS1 html]# chmod o+w blog/ [root@RS1 html]# vim /etc/fstab 192.168.198.130:/app/blog /var/www/html/blog nfs defaults 0 0[root@RS1 html]# yum -y install nfs-utils \\使RS1支持NFS格式的文件[root@RS1 html]# mount -a[root@RS1 html]# df | grep /blog192.168.198.130:/app/blog 30705024 62208 30642816 1% /var/www/html/blogRS2挂载NFS共享目录
[root@RS2 html]# setenforce 0[root@RS2 ~]# cd /var/www/html/[root@RS2 html]# mkdir blog[root@RS2 html]# chmod o+w blog/ [root@RS2 html]# vim /etc/fstab 192.168.198.130:/app/blog /var/www/html/blog nfs defaults 0 0[root@RS2 html]# yum -y install nfs-utils \\使RS1支持NFS格式的文件[root@RS2 html]# mount -a[root@RS2 html]# df | grep /blog192.168.198.130:/app/blog 30705024 62208 30642816 1% /var/www/html/blogRS1安装PHP
[root@RS1 html]# yum -y install php php-mysql[root@RS1 html]# service httpd restartRS2安装PHP
[root@RS2 html]# yum -y install php php-mysql[root@RS2 html]# service httpd restartVS使用sh调度算法
[root@VS ~]# vim lvs_nat.sh#! /bin/bashvip=172.16.253.105:80rip1=192.168.198.138rip2=192.168.198.120:8080sch=shcase $1 instart) ipvsadm -A -t $vip -s $sch ipvsadm -a -t $vip -r $rip1 -m -w 3 ipvsadm -a -t $vip -r $rip2 -m -w 1 ;;stop) ipvsadm -C ;;*) echo "Usage:$(basename $0) start|stop" exit 1 ;;esac[root@VS ~]# bash lvs_nat.sh stop[root@VS ~]# bash lvs_nat.sh startclient
修改DNS[root@client ~]# vim /etc/resolv.conf # Generated by NetworkManager search danran.com nameserver 172.16.252.248[root@client ~]# for i in {1..10};do curl -k https://172.16.253.105;done welcome to RS1welcome to RS1welcome to RS2[root@client ~]# for i in {1..10};do curl -k https://www.danran.com;done welcome to RS1welcome to RS2welcome to RS1welcome to RS1welcome to RS2客户端图形化或浏览器firefox www.danran.com/blog \\安装wordpress实现一个LVS调用一组不同服务
即一个LVS同时调用http和https两种不同的服务
VS
搭建https的LVS_nat
[root@VS ~]# vim lvs_nat.sh #! /bin/bashvip=172.16.253.105:443rip1=192.168.198.138rip2=192.168.198.120sch=wrrcase $1 instart) ipvsadm -A -t $vip -s $sch ipvsadm -a -t $vip -r $rip1 -m -w 3 ipvsadm -a -t $vip -r $rip2 -m -w 1 ;;stop) ipvsadm -C ;;*) echo "Usage:$(basename $0) start|stop" exit 1 ;;esac[root@VS ~]# bash lvs_nat.sh stop[root@VS ~]# bash lvs_nat.sh start[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 172.16.253.105:443 wrr -> 192.168.198.120:443 Masq 1 0 0 -> 192.168.198.138:443 Masq 3 0 0[root@VS ~]# bash lvs_nat.sh start 搭建http的LVS_nat
[root@VS ~]# vim lvs_nat2.sh #! /bin/bashvip=172.16.253.105:80rip1=192.168.198.138rip2=192.168.198.120:8080sch=wrrcase $1 instart) ipvsadm -A -t $vip -s $sch ipvsadm -a -t $vip -r $rip1 -m -w 3 ipvsadm -a -t $vip -r $rip2 -m -w 1 ;;stop) ipvsadm -C ;;*) echo "Usage:$(basename $0) start|stop" exit 1 ;;esac[root@VS ~]# bash lvs_nat.sh stop[root@VS ~]# bash lvs_nat.sh start[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 172.16.253.105:443 wrr -> 192.168.198.120:443 Masq 1 0 0 -> 192.168.198.138:443 Masq 3 0 0[root@VS ~]# bash lvs_nat2.sh start[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 172.16.253.105:80 wrr -> 192.168.198.120:8080 Masq 1 0 0 -> 192.168.198.138:80 Masq 3 0 0 TCP 172.16.253.105:443 wrr -> 192.168.198.120:443 Masq 1 0 0 -> 192.168.198.138:443 Masq 3 0 0 client
[root@client ~]# for i in {1..10};do curl -k https://172.16.253.105;done welcome to RS2welcome to RS1welcome to RS1welcome to RS2welcome to RS1welcome to RS1welcome to RS2welcome to RS1welcome to RS1welcome to RS2[root@client ~]# for i in {1..10};do curl -k http://172.16.253.105;done welcome to RS2welcome to RS1welcome to RS1welcome to RS1welcome to RS2welcome to RS1welcome to RS1welcome to RS1welcome to RS2welcome to RS1ipvsadm策略的保存
[root@VS ~]# ipvsadm-save > lvs[root@VS ~]# ipvsadm -C[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn[root@VS ~]# ipvsadm-restore < lvs[root@VS ~]# ipvsadm -LnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 185.53.178.7:443 sh -> 192.168.198.120:443 Masq 1 0 0 -> 192.168.198.138:443 Masq 2 0 0 将ipvsadm保存在/etc/sysconfig/ipvsadm文件中，将会开机自启动 [root@VS ~]# ipvsadm-save > /etc/sysconfig/ipvsadm阅读全文
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