NFS单点故障及深度优化方案
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####主机:
backup nfs01
####系统环境:
[[email protected] ~]# cat /etc/redhat-release CentOS release 6.8 (Final) [[email protected] ~]# uname -r 2.6.32-642.el6.x86_64 [[email protected] ~]# /etc/init.d/iptables status iptables: Firewall is not running. [[email protected] ~]# getenforce Disabled ####安装包 yum install keepalived -y
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####keepalived配置文件
###backup
global_defs { router_id LVS_02 } vrrp_script check_nfs { script "/server/scripts/check_nfs.sh" interval 2 weight 2 } vrrp_instance VI_1 { state BACKUP interface eth1 virtual_router_id 100 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 172.16.1.3/16 dev eth1 label eth1:1 } track_script { check_nfs } }
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###nfs01
global_defs { router_id LVS_01 } vrrp_script check_nfs { script "/server/scripts/check_nfs.sh" interval 2 weight 2 } vrrp_instance VI_1 { state MASTER interface eth1 virtual_router_id 100 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 172.16.1.3/16 dev eth1 label eth1:1 } track_script { check_nfs } }
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####修改backup rsyncd.conf配置文件
######rsync_config_______________start ##rsyncd.conf start## uid = www gid = www use chroot = no max connections = 200 timeout = 300 pid file = /var/run/rsyncd.pid lock file = /var/run/rsync.lock log file = /var/log/rsyncd.log ignore errors read only = false list = false hosts allow = 172.16.1.0/24 #hosts deny = 0.0.0.0/32 auth users = rsync_backup secrets file = /etc/rsync.password [backup] path = /backup/ [nfsbackup] path = /nfsbackup/ [web01backup] path = /web01backup/ [data] path = /data #rsync_config_______________end
####修改rsync匿名用户为www uid为888,添加一个模块/data
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####添加用户
useradd -s /sbin/nologin -M -u888 www id www mkdir /data chown -R www.www /web01backup /nfsbackup /backup /data
####修改nfs01的sersync配置文件,将rsync的模块改为data
<?xml version="1.0" encoding="ISO-8859-1"?> <head version="2.5"> <host hostip="localhost" port="8008"></host> <debug start="false"/> <fileSystem xfs="false"/> <filter start="false"> <exclude expression="(.*)\.svn"></exclude> <exclude expression="(.*)\.gz"></exclude> <exclude expression="^info/*"></exclude> <exclude expression="^static/*"></exclude> </filter> <inotify> <delete start="true"/> <createFolder start="true"/> <createFile start="false"/> <closeWrite start="true"/> <moveFrom start="true"/> <moveTo start="true"/> <attrib start="false"/> <modify start="false"/> </inotify> <sersync> <localpath watch="/data"> <remote ip="172.16.1.41" name="data"/> <!--<remote ip="192.168.8.39" name="tongbu"/>--> <!--<remote ip="192.168.8.40" name="tongbu"/>--> </localpath> <rsync> <commonParams params="-az --delete"/> <auth start="true" users="rsync_backup" passwordfile="/etc/rsync.password"/> <userDefinedPort start="false" port="874"/><!-- port=874 --> <timeout start="false" time="100"/><!-- timeout=100 --> <ssh start="false"/> </rsync> <failLog path="/var/log/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once--> <crontab start="false" schedule="600"><!--600mins--> <crontabfilter start="false"> <exclude expression="*.php"></exclude> <exclude expression="info/*"></exclude> </crontabfilter> </crontab> <plugin start="false" name="command"/> </sersync> <plugin name="command"> <param prefix="/bin/sh" suffix="" ignoreError="true"/> <!--prefix /opt/tongbu/mmm.sh suffix--> <filter start="false"> <include expression="(.*)\.php"/> <include expression="(.*)\.sh"/> </filter> </plugin> <plugin name="socket"> <localpath watch="/opt/tongbu"> <deshost ip="192.168.138.20" port="8009"/> </localpath> </plugin> <plugin name="refreshCDN"> <localpath watch="/data0/htdocs/cms.xoyo.com/site/"> <cdninfo domainname="ccms.chinacache.com" port="80" username="xxxx" passwd="xxxx"/> <sendurl base="http://pic.xoyo.com/cms"/> <regexurl regex="false" match="cms.xoyo.com/site([/a-zA-Z0-9]*).xoyo.com/images"/> </localpath> </plugin> </head>
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####在backup启动rpcbind nfs服务,共享/data目录
[[email protected] data]# cat /etc/exports #share /data by oldboy for bingbing at 20160425 /data/www 172.16.1.0/24(rw,sync,all_squash,anonuid=888,anongid=888) /data/bbs 172.16.1.0/24(rw,sync,all_squash,anonuid=888,anongid=888) /data/blog 172.16.1.0/24(rw,sync,all_squash,anonuid=888,anongid=888)
####启动服务
chkconfig rpcbind on
chkconfig nfs on
####将web服务的挂载ip改为172.16.1.3
umount -lf /application/nginx-1.10.2/html/www/uploads umount -lf /application/nginx-1.10.2/html/bbs umount -lf /application/nginx-1.10.2/html/blog/wp-content
####NFS客户端内核优化
cat >>/etc/sysctl.conf<<EOF net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 EOF sysctl -p
####客户端挂载优化
mount -t nfs -o nosuid,noexec,nodev,noatime,nodiratime,rsize=131072,wsize=131072 172.16.1.3:/data/www /application/nginx-1.10.2/html/www/uploads mount -t nfs -o nosuid,noexec,nodev,noatime,nodiratime,rsize=131072,wsize=131072 172.16.1.3:/data/bbs /application/nginx-1.10.2/html/bbs mount -t nfs -o nosuid,noexec,nodev,noatime,nodiratime,rsize=131072,wsize=131072 172.16.1.3:/data/blog /application/nginx-1.10.2/html/blog/wp-content
####解决nfs服务停止keepalived不跳到backup的问题,编写脚本
[[email protected] storage]# cat check_nfs.sh #!/bin/bash if [ `showmount -e localhost|wc -l` -lt 4 ];then /etc/init.d/keepalived stop fi
####启动服务,加入开机自启动
/etc/init.d/keepalived start
chkconfig keepalived on
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