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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

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
  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

    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
 }
  5. Start the xinetd service, and configure it to start at boot time: 
    # systemctl start xinetd.service
# systemctl enable xinetd.service