Created
July 14, 2019 07:11
-
-
Save hkparker/5507ac094f0b28b5407b93aae020948d to your computer and use it in GitHub Desktop.
Every time I boot xenserver/xcp-ng I have to bridge the interfaces for my IDS to get TAP traffic. My IDS runs this at boot to ssh in and do it.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #!/usr/bin/ruby | |
| require 'net/ssh' | |
| bridges = ["xenbr3", "xenbr4", "xenbr5"] | |
| bridge_interfaces = { | |
| "xenbr3" => "eth3", | |
| "xenbr4" => "eth4", | |
| "xenbr5" => "eth5" | |
| } | |
| bridge_vifs = {} | |
| begin | |
| ssh = Net::SSH.start("hypervisor", "root") | |
| rescue | |
| retry | |
| end | |
| vif_lines = ssh.exec!("ovs-vsctl show").split("\n") | |
| bridges.each do |bridge| | |
| grabbing = false | |
| vif_lines.each do |line| | |
| if line == " Bridge \"#{bridge}\"" | |
| grabbing = true | |
| end | |
| if grabbing | |
| if line.include? " Port \"vif" | |
| bridge_vifs[bridge] = line[/vif\d+.\d+/] | |
| grabbing = false | |
| end | |
| end | |
| next | |
| end | |
| end | |
| bridge_vifs.each do |bridge, vif| | |
| interface = bridge_interfaces[bridge] | |
| ssh.exec! "ovs-vsctl -- set Bridge #{bridge} mirrors=@m -- --id=@#{interface} get Port #{interface} -- --id=@#{vif} get Port #{vif} -- --id=@m create Mirror name=#{interface}-mirror select-dst-port=@#{interface} select-src-port=@#{interface} output-port=@#{vif}" | |
| end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment