Four ways to implement web data synchronization in Centos

Four ways to implement web data synchronization =========================================== ======== nfs enables web data sharing rsync + inotify for web data synchronization rsync + sersync faster and more resource-saving implementation of web data synchronization unison + inotify for two-way web data synchronization = ============================================================ 1. nfs achieve web Data Sharing & n

Four ways to implement web data synchronization

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Nfs for web data sharing

Rsync + inotify for web data synchronization

Rsync + sersync faster and more resource-saving for web data synchronization

Unison + inotify achieve two-way web data synchronization

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I. nfs for web data sharing

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[root@jie1 ~]# vim /etc/httpd/conf/httpd.conf########################################ServerName 172.16.22.1:80#DocumentRoot "/var/www/html" ServerName www.jie.comDocumentRoot  /web/htdocs</VirtualHost>#######################################[root@jie1 ~]# mkdir -pv /web/htdocs[root@jie1 ~]# Cd/web/htdocs # No webpage files on the server[root@jie1 ~]# ls[root@jie1 ~]#

3) rsync service configuration

* ***** Create The rsync configuration file and password file ************

Touch/etc/rsyncd. conf (rsync configuration file)

Touch/etc/rsyncd. pwd (user's password file)

Chmod 600/etc/rsyncd. pwd (the permission must be set to 600; otherwise, the backup will fail)

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[root@jie1 ~]# vim /etc/rsyncd.conf############vim /etc/rsyncd.conf########################################uid = nobody                    # Id of the backup, user IDgid = nobody                    # ID of the backup groupuse chroot = no                 # Banned from the source directorymax connections = 3             # Maximum number of connections. 0 indicates no limitstrict modes = yes# Check the permissions of the password filepid file= /var/run/rsyncd.pid  # Pid file of the running processlog file= /var/log/rsyncd.log  # Log file[htdocs]                        # Specify the name of the authenticated backup modulepath = /web/htdocs# Path of the directory to be backed upignore errors = yes# Ignore irrelevant IO errorsreadonly = no                  # If it is set to no, it can be passed to the corresponding directory on the server.write only = no                 # Set to no, indicating that the client can download fileshosts allow = 172.16.22.3       # IP address of the host that can connect to the rsync serverhosts deny = *                  # Set the host address to prohibit the connection to the rsync server. * indicates that all requests except those defined by hosts allow are rejected.uid = rootgid = rootauth users= backuper            # User name of the connection modulesecrets file= /etc/rsyncd.pwd# Path for storing the password file of the connection module User name#####################################################################[root@jie1 ~]# Vim/etc/rsyncd. pwd # user's password file#####################################################################backuper:pwd123        # Username: password#####################################################################[root@jie1 ~]# Chmod 600/etc/rsyncd. pwd # grant permissions to 600[root@jie1 ~]# chkconfig rsync on[root@jie1 ~]# chkconfig xinetd on[root@jie1 ~]