NFS single point of failure and in-depth optimization solutions, nfs single point of failure depth

NFS single point of failure and in-depth optimization solutions, nfs single point of failure depth

#### Host:
Backup nfs01

#### System environment:

[Root @ backup ~] # Cat/etc/redhat-release CentOS release 6.8 (Final) [root @ backup ~] # Uname-r2.6.32-642. el6.x86 _ 64 [root @ backup ~] #/Etc/init. d/iptables statusiptables: Firewall is not running. [root @ backup ~] # GetenforceDisabled #### installation package yum install keepalived-y

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#### Keepalived configuration file
### 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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#### Modify the backup rsyncd. conf configuration file

######rsync_config_______________start##rsyncd.conf start##uid = wwwgid = wwwuse chroot = nomax connections = 200timeout = 300pid file = /var/run/rsyncd.pidlock file = /var/run/rsync.locklog file = /var/log/rsyncd.logignore errorsread only = falselist = falsehosts allow = 172.16.1.0/24#hosts deny = 0.0.0.0/32auth users = rsync_backupsecrets file = /etc/rsync.password[backup]path = /backup/[nfsbackup]path = /nfsbackup/[web01backup]path = /web01backup/[data]path = /data#rsync_config_______________end

#### Add a module/data
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#### Add a user

useradd -s /sbin/nologin -M -u888 wwwid wwwmkdir /datachown -R www.www /web01backup /nfsbackup /backup /data

 

#### Modify the sersync configuration file of nfs01 and change the rsync module to data

<?xml version="1.0" encoding="ISO-8859-1"?>

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#### Start the rpcbind nfs service in backup and share the/data Directory

[root@backup 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)

#### Start the service

chkconfig rpcbind onchkconfig nfs on


#### Change the web Service Mount ip address to 172.16.1.3

umount -lf /application/nginx-1.10.2/html/www/uploadsumount -lf /application/nginx-1.10.2/html/bbsumount -lf /application/nginx-1.10.2/html/blog/wp-content

 
#### NFS client kernel Optimization

cat >>/etc/sysctl.conf<<EOFnet.core.wmem_default = 8388608net.core.rmem_default = 8388608net.core.rmem_max = 16777216net.core.wmem_max = 16777216EOFsysctl -p


#### Client mounting Optimization

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/uploadsmount -t nfs -o nosuid,noexec,nodev,noatime,nodiratime,rsize=131072,wsize=131072 172.16.1.3:/data/bbs /application/nginx-1.10.2/html/bbsmount -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


#### Solve the problem that the nfs service stops keepalived and does not jump to backup. Compile a script

[root@m01 storage]# cat check_nfs.sh #!/bin/bashif [ `showmount -e localhost|wc -l` -lt 4 ];then   /etc/init.d/keepalived stopfi


#### Start the service and add it to auto-start upon startup

/etc/init.d/keepalived startchkconfig keepalived on