Use Vsock with Libzmq

4 comments

• zoobab 2 hours ago
  Preparing for the 10 years anniversary of Pieter Hintjens's disseapearance, the main author of Zeromq:

  http://hintjens.com/blog:125
• dwrodri 9 hours ago
  I could see this being really useful for people who need VM-Sandboxed software, but also need quick and dirty bridges between host/guest. Great contribution!
• remijouannet 2 days ago
  hi, i’ve recently contributed to libzmq by adding AF_VSOCK. if anyone is playing around with it
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  • touisteur 2 hours ago
    Been hoping for some time someone would write it better than my local ugly hack. This immediately useful. Thanks a bunch.
• sthustfo 6 hours ago
  What are the typical use cases for the Guest VM to talk to Hypervisor? I see 2 use cases mentioned on the Proxmox link (https://pve.proxmox.com/wiki/Qemu-guest-agent)

  1. shutdown the guest 2. freeze the guest system during backup/snapshot

  Just curious about other possible use cases.

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  • donmcronald 3 hours ago
    I think it would be useful for backup testing. Lots of VM backup software will boot a restored VM and screenshot the login screen. That’s useless IMO because you could be screenshotting an outdated restore without realizing.

    I think you could boot a network disconnected VM and communicate over vsock to assess the guest health. You’d need an agent in the VM, but I think it'd be worth it.
  • touisteur 2 hours ago
    Building micromvs with no network support helps with isolation and (more) kernel surface reduction.
  • teravor 3 hours ago
    some VMMs just straight up translate vsock from the guest to UDS on the host.
  • orielhaim 39 minutes ago
    [dead]