swift-recon --sockstat fails if target host does not have ipv6 configured

[Steve Mayer]

Using Swift 1.10.0

When running swift-recon --sockstat, if the target host doesn't have IPV6 configured, swift-recon fails with the following:

[2014-01-20 05:50:46] Checking socket usage
[root@uclmp0043 log]# swift-recon --sockstat
===============================================================================
--> Starting reconnaissance on 15 hosts
===============================================================================
[2014-01-20 05:50:57] Checking socket usage
Traceback (most recent call last):
  File "/usr/bin/swift-recon", line 838, in <module>
    reconnoiter.main()
  File "/usr/bin/swift-recon", line 832, in main
    self.socket_usage(hosts)
  File "/usr/bin/swift-recon", line 601, in socket_usage
    inuse6[url] = response['tcp6_in_use']
KeyError: 'tcp6_in_use'

The target host in question does not have IPV6 configured, thus doesn't have /proc/net/sockstat6. Due to this, the tcp6_in_use key does not exist.

[Christian Schwede (cschwede)]

Fix proposed: https://review.openstack.org/#/c/67776/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/67776
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=866c568cd6d240c00f222bcaa8f85a2a15039aee
Submitter: Jenkins
Branch: master

commit 866c568cd6d240c00f222bcaa8f85a2a15039aee
Author: Christian Schwede <email address hidden>
Date: Mon Jan 20 07:07:25 2014 +0000

    Make swift-recon usable on hosts without IPv6

    Fixes a bug when swift-recon --sockstat is used on hosts without
    IPv6 support.

    Tested by disabling IPv6 on Ubuntu 12.04 LTS:

    Add "ipv6.disable=1" to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub
    sudo update-grub
    sudo /sbin/reboot

    Closes-Bug: 1270711
    Change-Id: Ib31a059e412ac68ca0a3faef4201fec7560d1178

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: feature/ec
Review: https://review.openstack.org/70442