FWIW there was a long discussion on ASF Slack about this topic earlier this week (starting here <https://the-asf.slack.com/archives/CJZLTM05A/p1578958181081000>) with driftx, exlt & myself and the recommendation was to make the hostname resolve locally as best practice. Cheers!
On Wed, Jan 15, 2020 at 8:18 AM rammohan ganapavarapu < rammohanga...@gmail.com> wrote: > Hi, > > I am getting below error when i try to start cassandra processes even > when specify rcp_address and listen_address. > > CompilerOracle: inline > org/apache/cassandra/utils/FastByteOperations$UnsafeOperations.compareTo > (Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;)I > CompilerOracle: inline org/apache/cassandra/utils/vint/VIntCoding.encodeVInt > (JI)[B > Error: Exception thrown by the agent : java.net > <https://slack-redir.net/link?url=http%3A%2F%2Fjava.net>.MalformedURLException: > Local host name unknown: java.net > <https://slack-redir.net/link?url=http%3A%2F%2Fjava.net>.UnknownHostException: > cass-cluster1-844788cc8c-p6lb7: cass-cluster1-844788cc8c-p6lb7: Name does > not resolve > sun.management.AgentConfigurationError: java.net > <https://slack-redir.net/link?url=http%3A%2F%2Fjava.net>.MalformedURLException: > Local host name unknown: java.net > <https://slack-redir.net/link?url=http%3A%2F%2Fjava.net>.UnknownHostException: > cass-cluster1-844788cc8c-p6lb7: cass-cluster1-844788cc8c-p6lb7: Name does > not resolve > at > sun.management.jmxremote.ConnectorBootstrap.startRemoteConnectorServer(ConnectorBootstrap.java:480) > at sun.management.Agent.startAgent(Agent.java:262) > at sun.management.Agent.startAgent(Agent.java:452) > Caused by: java.net > <https://slack-redir.net/link?url=http%3A%2F%2Fjava.net>.MalformedURLException: > Local host name unknown: java.net > <https://slack-redir.net/link?url=http%3A%2F%2Fjava.net>.UnknownHostException: > cass-cluster1-844788cc8c-p6lb7: cass-cluster1-844788cc8c-p6lb7: Name does > not resolve > at javax.management.remote.JMXServiceURL.<init>(JMXServiceURL.java:289) > at javax.management.remote.JMXServiceURL.<init>(JMXServiceURL.java:253) > at > sun.management.jmxremote.ConnectorBootstrap.exportMBeanServer(ConnectorBootstrap.java:739) > at > sun.management.jmxremote.ConnectorBootstrap.startRemoteConnectorServer(ConnectorBootstrap.java:468) > > Any idea why C* processes is still trying to resolve hostname even after > giving IPs in the config? > > It works if i add static host entry in /etc/hosts file but i wanted to > understand why it needs to resolve hostsname even after specifying rpc and > listen IP addresses. > > > Thanks, > > Ram > >
