Multiple security and misc updates:

[majormoses]

• removed ruby < 2.3 support
• updated yard dependency to ~> 0.9.11 per
• updated rubocop dependency to ~> 0.51.0per
• bumped dependency of sensu-plugin to ~> 2.5 you can read about it here
• appeased the cops
• removed gemnasium badge
• added slack badge

Signed-off-by: Ben Abrams me@benabrams.it

Pull Request Checklist

• [CVE-2017-17042] Update ruby plugins for vulnerable yard dependency community#97
• [CVE-2017-8418] Update ruby plugins for vulnerable rubocop dependency community#77

General

• Update Changelog following the conventions laid out on Keep A Changelog

- [ ] Update README with any necessary configuration snippets

- [ ] Binstubs are created if needed

• RuboCop passes

• Existing tests pass

Testing Artifacts

check-lv-usage.rb:

$ bundle exec ./bin/check-lv-usage.rb 
CheckLVUsage UNKNOWN: An error occured getting the LVM info: got empty list of volumes.
Check to ensure sensu has been configured with appropriate permissions.
On linux systems it will generally need to allow executing `/sbin/lvm`

$ sudo /opt/chefdk/embedded/bin/ruby ./bin/check-lv-usage.rb 
[sudo] password for babrams: 
CheckLVUsage OK: All logical volume data usage under 85% and metadata usage under 85%

check-vg-usage.rb:

$ sudo /opt/chefdk/embedded/bin/ruby ./bin/check-vg-usage.rb 
CheckVg CRITICAL: ubuntu-vg 100.0% bytes usage (475/475)

$ bundle exec ./bin/check-vg-usage.rb 
Check failed to run: Fatal error, ` pvs --verbose --separator=^ --noheadings --nosuffix --units=b --unbuffered --options dev_size,pe_start,pv_allocatable,pv_attr,pv_ba_size,pv_ba_start,pv_duplicate,pv_exported,pv_ext_vsn,pv_fmt,pv_free,pv_in_use,pv_major,pv_mda_count,pv_mda_free,pv_mda_size,pv_mda_used_count,pv_minor,pv_missing,pv_name,pv_pe_alloc_count,pv_pe_count,pv_size,pv_tags,pv_used,pv_uuid,vg_uuid` returned 5 with 'WARNING: Running as a non-root user. Functionality may be unavailable.
  /run/lvm/lvmetad.socket: access failed: Permission denied
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  /run/lock/lvm/P_global:aux: open failed: Permission denied
  Unable to obtain global lock.', ["/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/external.rb:19:in `cmd'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/wrapper/pvs.rb:33:in `list'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/physical_volumes.rb:21:in `each'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/physical_volumes.rb:31:in `list'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/volume_groups.rb:26:in `each'", "./bin/check-vg-usage.rb:75:in `volume_groups'", "./bin/check-vg-usage.rb:128:in `run'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/sensu-plugin-2.5.0/lib/sensu-plugin/cli.rb:57:in `block in <class:CLI>'"]

metrics-vg-usage.rb:

$ bundle exec ./bin/metrics-vg-usage.rb 
Check failed to run: Fatal error, ` pvs --verbose --separator=^ --noheadings --nosuffix --units=b --unbuffered --options dev_size,pe_start,pv_allocatable,pv_attr,pv_ba_size,pv_ba_start,pv_duplicate,pv_exported,pv_ext_vsn,pv_fmt,pv_free,pv_in_use,pv_major,pv_mda_count,pv_mda_free,pv_mda_size,pv_mda_used_count,pv_minor,pv_missing,pv_name,pv_pe_alloc_count,pv_pe_count,pv_size,pv_tags,pv_used,pv_uuid,vg_uuid` returned 5 with 'WARNING: Running as a non-root user. Functionality may be unavailable.
  /run/lvm/lvmetad.socket: access failed: Permission denied
  WARNING: Failed to connect to lvmetad. Falling back to device scanning.
  /run/lock/lvm/P_global:aux: open failed: Permission denied
  Unable to obtain global lock.', ["/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/external.rb:19:in `cmd'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/wrapper/pvs.rb:33:in `list'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/physical_volumes.rb:21:in `each'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/physical_volumes.rb:31:in `list'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/chef-ruby-lvm-0.3.0/lib/lvm/volume_groups.rb:26:in `each'", "./bin/metrics-vg-usage.rb:62:in `volume_groups'", "./bin/metrics-vg-usage.rb:86:in `run'", "/home/babrams/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/sensu-plugin-2.5.0/lib/sensu-plugin/cli.rb:57:in `block in <class:CLI>'"]

$ sudo /opt/chefdk/embedded/bin/ruby ./bin/metrics-vg-usage.rb 
babrams-ThinkPad-X1-Carbon-5th.vg_usage.ubuntu-vg.used 511054970880 1530863560
babrams-ThinkPad-X1-Carbon-5th.vg_usage.ubuntu-vg.avail 0 1530863560
babrams-ThinkPad-X1-Carbon-5th.vg_usage.ubuntu-vg.used_percentage 100.0 1530863560

Purpose

Address multiple CVE's, misc clearnup

Known Compatablity Issues

• Removes Ruby < 2.3 support
• disables in event filtering (not really relevant since there are no handlers)

[jaredledvina]

LGTM

[majormoses]

released: https://rubygems.org/gems/sensu-plugins-lvm/versions/2.0.0