RHEL6.2平台利用KVM虚拟机搭建高可用负载均衡WEB集(2)

[OK]

warning:unknown:write failed:no space left on device(28)in unknown on line 0 warning:unknown:failed to write session data(files).please verify that the current setting of session.save_path is correct...。/stage[main]/apache::service/service[httpd]/ensure: change from stopped to running failed: could not start service[httpd]: execution of '/sbin/service httpd start' returned 1: starting httpd: [failed]。the getaddrinfo() function converts a hostname and a service name into a listof structures, each containing a potential way to connect() to the namedservice on the named host.。

解决方法：

root@Web:[/root]~$vi /etc/hosts

添加

172.16.9.2 Web

root@Web:[/root]~$service libvirtd restart

Stopping libvirtd daemon: [OK]

Starting libvirtd daemon: [OK]

启动全部虚拟机

root@Web:[/root]~$virsh start XXX

root@Web:[/root]~$virsh list

Id Name State

----------------------------------

1 LVS-MASTER running

2 LVS-BACKUP running

3 Filesystem running

4 Web-A running

5 Web-A running

6 Web-C running

7 Mysql-A running

8 Mysql-B running

虚拟机启动后网卡无法正常工作，解决方法如下：

kvm虚拟机克隆后网卡无法启动解决办法：

1 修改/etc/udev/rules.d/70-persistent-net.rules文件，删除第一个网卡记录，并将第二个的NAME="eth1"改为NAME="eth0"

2 如果在/etc/sysconfig/network-scripts/ifcfg-eth0中有配置网卡信息的话，如：#HWADDR="00:0C:29:C8:1A:92"，将其注释kvm集群kvm集群。

顺便修改主机名和ip地址

修改主机名：

root@Web-A:[/root]~$vi /etc/sysconfig/network

NETWORKING=yes

HOSTNAME=LVS-BACKUP

GATEWAY=172.16.9.1

更新系统时间

yum -y installntp

ntpdate time.nist.gov

echo "00 01 * * * /usr/sbin/ntpdate time.nist.gov"> /etc/crontab

重启系统

全部虚拟机准备好后，开始搭建高可用负载均衡WEB集群！

二、keepalived+lvs搭建高可用负载均衡WEB集群

rhel6.2系统盘里有ipvsadm-1.25-9.el6.x86_64.rpm

keepalived-1.2.2.tar.gz需要下载

1、LVS-MASTER及LVS-BACKUP安装步骤：

登录LVS-MASTER

root@LVS-MASTER:[/root]~$rpm -ivh ipvsadm-1.25-9.el6.x86_64.rpm

root@LVS-MASTER:[/root]~$yum -y install kernel-devel

root@LVS-BACKUP:[/root]~$yum -y groupinstall "Development tools"

root@LVS-MASTER:[/root]~$tar xzvf keepalived-1.2.2.tar.gz

root@LVS-MASTER:[/root]~$cd keepalived-1.2.2

[root@localhost mpc-0.8.1]#/opt/mpc-0.8.1/configure --prefix=/usr/local/mpc-0.8.1 --with-gmp=/usr/local/gmp-4.3.2 --with-mpfr=/usr/local/mpfr-2.4.2。[root@rekfan.com mpc-0.8.1]# /opt/mpc-0.8.1/configure --prefix=/usr/local/mpc-0.8.1 --with-gmp=/usr/local/gmp-4.3.2 --with-mpfr=/usr/local/mpfr-2.4.2。[root@jasonemacs-24.1]#./configure--prefix=/usr/local/emacs--with-libtiff=/usr/local/lib。

出错：

configure: error:

!!! OpenSSL is not properly installed on your system. !!!

!!! Can not include OpenSSL headers files. !!!

解决方法：

root@LVS-MASTER:[/root/keepalived-1.2.2]~$yum -y install openssl-devel

出错：

checking for poptGetContext in -lpopt... no

configure: error: Popt libraries is required

解决方法：

[root@rac1 ~]# yum -y install libx11。[root@rac1 ~]# yum -y install libxext-1.3.3-1.el6.i686。[root@rac1 ~]# yum -y install libxi-1.7.8-1.el6.i686。

再次运行

root@LVS-MASTER:[/root/keepalived-1.2.2]~$./configure -- prefix=/usr/local/keepalived --with-kernel-dir=/usr/src/kernels/2.6.32-220.el6.x86_64/

完毕后出现如下信息：

############################################

Keepalived configuration

------------------------

Keepalived version : 1.2.2

Compiler : gcc

Compiler flags : -g -O2

Extra Lib : -lpopt -lssl -lcrypto

Use IPVS Framework : Yes

IPVS sync daemon support : Yes

IPVS use libnl : No

Use VRRP Framework : Yes

Use Debug flags : No

############################################

root@LVS-MASTER:[/root/keepalived-1.2.2]~$make

[root@keepalived-master keepalived-1.2.12]#make install。[root@mail zlib-1.2.3]# make install。[root@mail cyrus-sasl-2.1.23]# make install。

############################################

make -C keepalived install

make[1]: Entering directory `/root/keepalived-1.2.2/keepalived'

install -d /usr/local/keepalived/sbin

install -m 700 ../bin/keepalived /usr/local/keepalived/sbin/

install -d /usr/local/keepalived/etc/rc.d/init.d

install -m 755 etc/init.d/keepalived.init /usr/local/keepalived/etc/rc.d/init.d/keepalived

install -d /usr/local/keepalived/etc/sysconfig

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/ 。cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/。#sed -i ‘s#/etc/sysconfig/keepalived#/usr/local/etc/sysconfig/keepalived#g‘ /etc/init.d/keepalived。

install -d /usr/local/keepalived/etc/keepalived/samples

install -m 644 etc/keepalived/keepalived.conf /usr/local/keepalived/etc/keepalived/

protected]/* */ install]#cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/。protected]/* */ install]#cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/。cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/。

install -d /usr/local/keepalived/share/man/man5

install -d /usr/local/keepalived/share/man/man8

install -m 644 ../doc/man/man5/keepalived.conf.5 /usr/local/keepalived/share/man/man5

man-m/usr/share/man:/usr/share/man/localftp。/usr/share/man/man8/nmbd.8.gz。/usr/share/man/man8/eventlogadm.8.gz。

[root@keepalived-master keepalived-1.2.12]#make install。make[1] : leaving directory /root/downloads/fcgi- 2. 4. 1- snap- 0910052249’。make[1]: leaving directory/root/downloads/emacs-24.5/lib-src&rsquo。

本文来自电脑杂谈，转载请注明本文网址：
http://www.pc-fly.com/a/jisuanjixue/article-101620-2.html