I used infinispan in the spring boot project, and I know that jgroups complete node communication and discovery in infinispan. I can already do multi-instance mutual discovery on the dockers. Now the problem is on Kubernetes.

The jgroups configuration file default-jgroups-kubernetes.xml I used was found in the official package of infinispan. I only modified tcp.port and the KUBE_PING tag:

<config xmlns="urn:org:jgroups"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="urn:org:jgroups http://www.jgroups.org/schema/jgroups-4.0.xsd">

   <TCP bind_addr="${jgroups.tcp.address:match-interface:eth.*}"
        bind_port="${jgroups.tcp.port:30001}"
        enable_diagnostics="false"
        thread_naming_pattern="pl"
        send_buf_size="640k"
        sock_conn_timeout="300"
        bundler_type="no-bundler"
        logical_addr_cache_expiration="360000"

        thread_pool.min_threads="${jgroups.thread_pool.min_threads:0}"
        thread_pool.max_threads="${jgroups.thread_pool.max_threads:200}"
        thread_pool.keep_alive_time="60000"
   />
   <kubernetes.KUBE_PING
     port_range="3000"
     namespace="default"
     masterProtocol="https"
     masterHost="https://192.1.5.110:32305"
     masterPort="32305"
   />
   <MERGE3 min_interval="10000" 
           max_interval="30000" 
   />
   <FD_SOCK />
   <!-- Suspect node `timeout` to `timeout + timeout_check_interval` millis after the last heartbeat -->
   <FD_ALL timeout="10000"
           interval="2000"
           timeout_check_interval="1000"
   />
   <VERIFY_SUSPECT timeout="1000"/>
   <pbcast.NAKACK2 use_mcast_xmit="false"
                   xmit_interval="100"
                   xmit_table_num_rows="50"
                   xmit_table_msgs_per_row="1024"
                   xmit_table_max_compaction_time="30000"
                   resend_last_seqno="true"
   />
   <UNICAST3 xmit_interval="100"
             xmit_table_num_rows="50"
             xmit_table_msgs_per_row="1024"
             xmit_table_max_compaction_time="30000"
   />
   <pbcast.STABLE stability_delay="500"
                  desired_avg_gossip="5000"
                  max_bytes="1M"
   />
   <pbcast.GMS print_local_addr="false"
               join_timeout="${jgroups.join_timeout:5000}"
   />
   <MFC max_credits="2m" 
        min_threshold="0.40"
   />
   <FRAG3/>
</config>

By the way, I have introduced the dependencies of jgroups-kubernetes

I used the above configuration, and then the following exception：

...
Caused by: java.net.BindException: no port available in range [30001 .. 30051] (bind_addr=xxxxx%eth0)
  at org.jgroups.util.Util.createServerSocket(Util.java:3512)
  ...

Where xxxxx represents an IPv6 address

I don't know how to solve this exception. I tried to change the TCP port to 7800, and then the range is unchanged. The result is still the above exception, but the information becomes [7800..7850]

Looking forward to your help.Thanks!