Tomcat 集群 文件上传下载的共享问题 NFS配置

Tomcat 集群时上传文件时如何使得多部tomcat中的文件同步，Linux下可以通过NFS来解决这个问题。可以在一部linux server上配置NFS服务器，其他linux server当作NFS客户端。

客户端只需用nfs挂载服务端的目录即可，如：

mount -t nfs 192.168.1.80:/usr/local/share/tomcat/VOS/sharefolder /usr/share/tomcat/VOS/sharefolder

或者可以在/etc/fstab中設置：

192.168.1.80:/usr/local/share/tomcat/VOS/sharefolder /usr/share/tomcat/VOS/sharefolder nfs defaults 0 0

其中第一个sharefolder是服务器上目录，第二个目录是客户机挂载目录

[root@master ~]# yum -y install nfs-utils

[root@master ~]# vi /etc/idmapd.conf

# line 5: uncomment and change to your domain name

Domain = server.world

[root@master ~]# vi /etc/exports

# write like below *note

/home 10.0.0.0/24(rw,sync,no_root_squash,no_all_squash)

# *note

/home ⇒ shared directory

10.0.0.0/24 ⇒ range of networks NFS permits accesses

rw ⇒ writable

sync ⇒ synchronize

no_root_squash ⇒ enable root privilege

no_all_squash ⇒ enable users' authority

[root@master ~]# systemctl start rpcbind.service

[root@master ~]# systemctl start nfs-server.service

[root@master ~]# systemctl start nfs-lock.service

[root@master ~]# systemctl start nfs-idmap.service

[root@master ~]# systemctl enable rpcbind.service

[root@master ~]# systemctl enable nfs-server.service

[root@master ~]# systemctl enable nfs-lock.service

[root@master ~]# systemctl enable nfs-idmap.service

[root@www ~]# yum -y install nfs-utils

[root@master ~]# vi /etc/idmapd.conf

# line 5: uncomment and change to your domain name

Domain = server.world

[root@www ~]# systemctl start rpcbind.service

[root@www ~]# systemctl start nfs-lock.service

[root@www ~]# systemctl start nfs-idmap.service

[root@www ~]# systemctl start netfs.service

[root@www ~]# systemctl enable rpcbind.service

[root@www ~]# systemctl enable nfs-lock.service

[root@www ~]# systemctl enable nfs-idmap.service

[root@www ~]# systemctl enable netfs.service

[root@www ~]# mount -t nfs master.server.world:/home /home

[root@www ~]# df -h

Filesystem Size Used Avail Use% Mounted on

rootfs 16G 832M 14G 6% /

devtmpfs 995M 0 995M 0% /dev

tmpfs 1003M 0 1003M 0% /dev/shm

tmpfs 1003M 39M 964M 4% /run

/dev/mapper/VolGroup-lv_root 16G 832M 14G 6% /

tmpfs 1003M 39M 964M 4% /run

tmpfs 1003M 0 1003M 0% /sys/fs/cgroup

tmpfs 1003M 0 1003M 0% /media

/dev/vda2 485M 32M 428M 7% /boot

master.server.world:/home/ 16G 848M 14G 6% /home

# home directory on NFS is mounted

[root@www ~]# vi /etc/fstab

/dev/mapper/VolGroup-lv_root / ext4 defaults 1 1

UUID=65ec32e2-f459-4d63-b8b0-e18124b50f3a /boot ext4 defaults 1 2

/dev/mapper/VolGroup-lv_swap swap swap defaults 0 0

# add at the lat line: change home directory this server mounts to the one on NFS

master.server.world:/home /home nfs defaults 0 0

注意：若防火墙开着，要让nfs程序通过防火墙