4.2. Configure rsyncd


To ensure replication, you must set up rsyncd for your filesystems before you install and configure the Object Storage service. The following procedure must be performed on each storage node, while logged in as the root user. The procedure assumes that at least two XFS storage disks have been mounted on each storage node.

Example 4.2. Sample /etc/fstab Entry for Two XFS Storage Disks

/dev/sdb1	/srv/node/d1	xfs inode64,noatime,nodiratime	0 0
/dev/sdb2	/srv/node/d2	xfs inode64,noatime,nodiratime	0 0
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Procedure 4.1. Configuring rsyncd

  1. Copy addresses from the controller's /etc/hosts file, and add storage node IP addresses. Also ensure that all nodes have all addresses in their /etc/hosts file.
  2. Install the rsync and xinetd packages:
    # yum install rsync xinetd
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  3. Open the /etc/rsyncd.conf file in a text editor, and add the following lines:
    ##assumes 'swift' has been used as the Object Storage user/group
    uid = swift
    gid = swift
    log file = /var/log/rsyncd.log
    pid file = /var/run/rsyncd.pid
    ##address on which the rsync daemon listens
    address = LOCAL_MGT_NETWORK_IP
    	
    [account]
    max connections = 2
    path = /srv/node/
    read only = false
    write only      = no
    list            = yes
    incoming chmod  = 0644
    outgoing chmod  = 0644
    lock file = /var/lock/account.lock
    
    [container]
    max connections = 2
    path = /srv/node/
    read only = false
    write only      = no
    list            = yes
    incoming chmod  = 0644
    outgoing chmod  = 0644
    lock file = /var/lock/container.lock
    
    [object]
    max connections = 2
    path = /srv/node/
    read only = false
    write only      = no
    list            = yes
    incoming chmod  = 0644
    outgoing chmod  = 0644
    lock file = /var/lock/object.lock
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    Note

    Multiple account, container, and object sections can be used.
  4. Open the /etc/xinetd.d/rsync file, and add the following lines:
    service rsync
     {
         port            = 873
         disable         = no
         socket_type     = stream
         protocol        = tcp
         wait            = no
         user            = root
         group           = root
         groups          = yes
         server          = /usr/bin/rsync
         bind            = LOCAL_MGT_NETWORK_IP
         server_args = --daemon --config /etc/rsync.conf
     }
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  5. Start the xinetd service, and configure it to start at boot time:
    # systemctl start xinetd.service
    # systemctl enable xinetd.service
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