Changing the ssh port of nova computes is not supported. The nova- compute services should not be internet accessible (if so there are many more issues you might run into). As such the policy of moving well known ports has no security value.
** Changed in: nova Status: New => Won't Fix -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1697564 Title: Failed to resize instance after changing ssh's port Status in OpenStack Compute (nova): Won't Fix Bug description: Description =========== Consider of security, default port(22) of sshd maybe be changed. After it was changed, the resize of instance got error. Steps to reproduce ================== * Modify the /etc/ssh/sshd_config, 'Port 22022',and restart sshd; * Resize one instance Expected result =============== Resize successfully Actual result ============= Resize fails Environment =========== 1. Libvirt + KVM 2. OpenStack Mitaka # rpm -qa | grep nova openstack-nova-conductor-13.1.2-1.el7.noarch openstack-nova-api-13.1.2-1.el7.noarch python-nova-13.1.2-1.el7.noarch openstack-nova-novncproxy-13.1.2-1.el7.noarch openstack-nova-cert-13.1.2-1.el7.noarch openstack-nova-scheduler-13.1.2-1.el7.noarch python2-novaclient-3.3.2-1.el7.noarch openstack-nova-common-13.1.2-1.el7.noarch openstack-nova-console-13.1.2-1.el7.noarch Logs & Configs ============== 2017-06-13 00:46:35.807 14424 ERROR oslo_messaging.rpc.dispatcher ResizeError: Resize error: not able to execute ssh command: Unexpected error while running command. 2017-06-13 00:46:35.807 14424 ERROR oslo_messaging.rpc.dispatcher Command: ssh -o BatchMode=yes 172.23.30.7 mkdir -p /var/lib/nova/instances/67c23674-d6e9-40a2-95f0-5aa521074ff7 2017-06-13 00:46:35.807 14424 ERROR oslo_messaging.rpc.dispatcher Exit code: 255 2017-06-13 00:46:35.807 14424 ERROR oslo_messaging.rpc.dispatcher Stdout: u'' 2017-06-13 00:46:35.807 14424 ERROR oslo_messaging.rpc.dispatcher Stderr: u'ssh: connect to host 172.23.30.7 port 22: Connection refused\r\n' To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1697564/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp