Cluster Link

Set this to true to enable the cluster link. This is required if you want to cluster indexing and other features that depend on the cluster link.

cluster.link.enabled=false

Set the JGroups properties for each channel, we support up to 10 transport channels and 1 single required control channel. Use as few transport channels as possible for best performance. By default, only one UDP control channel and one UDP transport channel are enabled. Channels can be configured by XML files that are located in the class path or by inline properties.

Examples:

cluster.link.channel.properties.control=UDP(bind_addr=localhost;mcast_addr=${multicast.group.address["cluster-link-control"]};mcast_port=${multicast.group.port["cluster-link-control"]};ip_ttl=8;mcast_send_buf_size=150000;mcast_recv_buf_size=80000):PING(timeout=2000;num_initial_members=3):MERGE2(min_interval=5000;max_interval=10000):FD_SOCK:VERIFY_SUSPECT(timeout=1500):pbcast.NAKACK(gc_lag=50;retransmit_timeout=300,600,1200,2400,4800;max_xmit_size=8192;discard_delivered_msgs=true):UNICAST(timeout=300,600,1200,2400):pbcast.STABLE(desired_avg_gossip=20000):FRAG(frag_size=8096;down_thread=false;up_thread=false):pbcast.GMS(join_timeout=5000;join_retry_timeout=2000;shun=false;print_local_addr=true)
cluster.link.channel.properties.transport.0=UDP(bind_addr=localhost;mcast_addr=${multicast.group.address["cluster-link-udp"]};mcast_port=${multicast.group.port["cluster-link-udp"]};ip_ttl=8;mcast_send_buf_size=150000;mcast_recv_buf_size=80000):PING(timeout=2000;num_initial_members=3):MERGE2(min_interval=5000;max_interval=10000):FD_SOCK:VERIFY_SUSPECT(timeout=1500):pbcast.NAKACK(gc_lag=50;retransmit_timeout=300,600,1200,2400,4800;max_xmit_size=8192;discard_delivered_msgs=true):UNICAST(timeout=300,600,1200,2400):pbcast.STABLE(desired_avg_gossip=20000):FRAG(frag_size=8096;down_thread=false;up_thread=false):pbcast.GMS(join_timeout=5000;join_retry_timeout=2000;shun=false;print_local_addr=true)
cluster.link.channel.properties.transport.1=udp.xml
cluster.link.channel.properties.transport.2=mping.xml

Set JGroups' system properties. System properties have higher priority than individual properties given to each channel. That means system properties will override individual properties.

cluster.link.channel.system.properties=\
    #
    # Common
    #
    \
    jgroups.bind_addr:localhost,\
    #jgroups.bind_interface:eth0,\
    \
    #
    # Multicast
    #
    \
    jgroups.mping.mcast_addr:${multicast.group.address["cluster-link-mping"]},\
    jgroups.mping.mcast_port:${multicast.group.port["cluster-link-mping"]},\
    jgroups.mping.ip_ttl:8

Set this property to autodetect the default outgoing IP address so that JGroups can bind to it. The property must point to an address that is accessible to the portal server, www.google.com or your local gateway.

cluster.link.autodetect.address=www.google.com:80