Print Email PDF

Using netcat to troubleshoot connectivity to cloud based monitoring

REQUIREMENTS

DETAILS

Netcat (nc) can be used to test and troubleshoot connectivity from the Qumulo cluster.   Common support uses include

  • Connectivity between nodes
  • Connectivity between nodes and remote monitoring
  • Connectivity between clients and nodes

 

When troubleshooting remote monitoring connectivity, the following netcat command can be issued from the cluster command line.

for cbm in missionq ep1 monitor; do nc -zv -w3 ${cbm}.qumulo.com 443; done; nc -zv missionq-dumps.s3.amazonaws.com 443

A successful run will show ‘succeeded!’ after each entry.

admin@qumulo-1:~$ for cbm in missionq ep1 monitor; do nc -zv -w3 ${cbm}.qumulo.com 443; done; nc -zv missionq-dumps.s3.amazonaws.com 443;
Connection to missionq.qumulo.com 443 port [tcp/https] succeeded!
Connection to ep1.qumulo.com 443 port [tcp/https] succeeded!
Connection to monitor.qumulo.com 443 port [tcp/https] succeeded!
Connection to missionq-dumps.s3.amazonaws.com 443 port [tcp/https] succeeded!
admin@qumulo-1:~$

An unsuccessful run will hang and eventually respond with

nc: connect to missionq-dumps.s3.amazonaws.com port 443 (tcp) failed: Connection timed out

A failed connection most likely means a firewall is blocking the connection.   Please ensure all ports are open on the firewall to the locations listed in the ‘Prerequisites’ section of the Enabling Cloud Based Monitoring knowledge base article.

Was this article helpful?
0 out of 0 found this helpful

Comments

0 comments

Please sign in to leave a comment.

Have more questions?
Open a Case
Share it, if you like it.