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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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 Posted: Sun Oct 20, 2024 5:42 pm Post subject: Failed to connect socket to '/var/run/libvirt/libvirt-sock' |
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I get this error when trying to run virt-manager as my user
| Code: | Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/connection.py", line 923, in _do_open
self._backend.open(cb, data)
File "/usr/share/virt-manager/virtinst/connection.py", line 171, in open
conn = libvirt.openAuth(self._open_uri,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/site-packages/libvirt.py", line 147, in openAuth
raise libvirtError('virConnectOpenAuth() failed')
libvirt.libvirtError: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied
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But I can run it and connect to the daemon as root. I have added myself to the libvirt group, and emerged virt-manager using policykit. Any advice is appreciated.
I am also unable to start virtbr0, and get an error saying "Package not installed," but I can't figure out what package I am missing. |
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Hu
Administrator
Joined: 06 Mar 2007
Posts: 22698
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| Posted: Sun Oct 20, 2024 5:56 pm Post subject: |
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| What is the output of id; namei -l /var/run/libvirt/libvirt-sock, as run from the same shell where that error can be reproduced? |
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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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| Posted: Sun Oct 20, 2024 7:48 pm Post subject: |
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| Code: | uid=1000(julie) gid=1000(julie) groups=1000(julie),10(wheel),18(audio),27(video),79(libvirt),100(users)
f: /var/run/libvirt/libvirt-sock
drwxr-xr-x root root /
drwxr-xr-x root root var
lrwxrwxrwx root root run -> ../run
drwxr-xr-x root root ..
drwxrwxrwt root root run
drwxr-xr-x root root libvirt
srwx------ root root libvirt-sock |
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Hu
Administrator
Joined: 06 Mar 2007
Posts: 22698
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| Posted: Sun Oct 20, 2024 8:08 pm Post subject: |
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| The socket is only accessible to root, so membership in the libvirt group will not help you. This seems wrong to me. I would have expected the socket to be accessible by a reasonable group, such as libvirt. |
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juliedeville
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Joined: 14 Oct 2024
Posts: 35
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| Posted: Sun Oct 20, 2024 10:20 pm Post subject: |
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| I see. How do I make it accessible to users? I read that libvirt uses polkit to allow user access, but I wasn't sure if it had to be configured manually. |
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Ralphred
l33t
Joined: 31 Dec 2013
Posts: 656
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| Posted: Sun Oct 20, 2024 10:32 pm Post subject: |
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| Hu wrote: | | The socket is only accessible to root, so membership in the libvirt group will not help you. This seems wrong to me. I would have expected the socket to be accessible by a reasonable group, such as libvirt. |
Indeed, in all contexts.
polkit can (apparently?) override this, but I changed it a long time ago* so it took me a while to locate, but: | /etc/libvirt/libvirtd.conf: | #################################################################
#
# UNIX socket access controls
#
# Set the UNIX domain socket group ownership. This can be used to
# allow a 'trusted' set of users access to management capabilities
# without becoming root.
#
# This setting is not required or honoured if using systemd socket
# activation.
#
# This is restricted to 'root' by default.
unix_sock_group = "libvirt"
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There is a bunch of other "stuff" you can alter after this section too, including "0775" style socket permissions.
*nano backups say aug 22. |
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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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| Posted: Mon Oct 21, 2024 4:01 pm Post subject: |
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Setting the socket to libvirt and permissions at 0775 did the trick, thank you much! However, I am still getting | Code: | error: Failed to start network default
error: Unable to create bridge virbr0: Package not installed |
when trying to start the default network device.
Here is emerge --info for libvirt
| Code: | app-emulation/libvirt-10.3.0-r3::gentoo was built with the following:
USE="caps libvirtd nls qemu udev virt-network -apparmor -audit -bash-completion -dtrace -firewalld -fuse -glusterfs -iscsi -iscsi-direct -libssh -libssh2 -lvm -lxc -nbd -nfs -numa (-openvz) -parted -pcap -policykit -rbd -sasl (-selinux) -test -verify-sig -virtiofsd -virtualbox -wireshark-plugins -xen -zfs" ABI_X86="(64)" |
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Ralphred
l33t
Joined: 31 Dec 2013
Posts: 656
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| Posted: Mon Oct 21, 2024 4:41 pm Post subject: |
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Does | Code: | | ebuild /var/db/repos/gentoo/app-emulation/libvirt/libvirt-10.3.0-r3.ebuild setup clean |
tell you about any missing kernel config? |
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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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| Posted: Mon Oct 21, 2024 7:37 pm Post subject: |
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| Oh that's it, I was missing a couple. Thank you! |
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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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| Posted: Tue Oct 22, 2024 5:15 pm Post subject: |
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Still getting the package error when trying to start virbr0, here is the output of the most recent command you gave me
| Code: | sudo ebuild /var/db/repos/gentoo/app-emulation/libvirt/libvirt-10.3.0-r3.ebuild setup clean 1 ↵
* libvirt-10.3.0.tar.xz BLAKE2B SHA512 size ;-) ... [ ok ]
* checking ebuild checksums ;-) ... [ ok ]
* checking auxfile checksums ;-) ... [ ok ]
* checking miscfile checksums ;-) ... [ ok ]
* Determining the location of the kernel source code
* Found kernel source directory:
* /usr/src/linux
* Found sources for kernel version:
* 6.6.52-gentoo
* Checking for suitable kernel configuration options ... [ ok ]
* Checking whether python3_13 is suitable ...
* dev-lang/python:3.13 ... [ !! ]
* Checking whether python3_12 is suitable ...
* dev-lang/python:3.12 ... [ ok ]
* python_check_deps ... [ ok ]
* Using python3.12 to build (via PYTHON_COMPAT iteration) |
I enabled all of the kernel params I was missing and rebuilt. |
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Ralphred
l33t
Joined: 31 Dec 2013
Posts: 656
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| Posted: Tue Oct 22, 2024 5:28 pm Post subject: |
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| juliedeville wrote: | | I enabled all of the kernel params I was missing and rebuilt. |
Let's check the simple things first, did you reboot too? |
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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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| Posted: Wed Oct 23, 2024 3:02 pm Post subject: |
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| Yes. Also, if it matters, I have tried starting it with root and my user |
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sMueggli
Guru
Joined: 03 Sep 2022
Posts: 497
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Ralphred
l33t
Joined: 31 Dec 2013
Posts: 656
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| Posted: Wed Oct 23, 2024 11:16 pm Post subject: |
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| juliedeville wrote: | | Yes. Also, if it matters, I have tried starting it with root and my user |
I can't help but think there is some "helper" package that VMM/libvirt is trying to use that has somehow slipped past the ebuild's dependency config.
If you try and follow https://wiki.gentoo.org/wiki/Network_bridge#Installation , mainly the ip link add br0 type bridge and try to make a "single nic bridge", just live, don't mess with any config, you are just running PoC to prove the kernel is up to the task, so shut down /etc/init.d/net.[some interface], and add it to br0 with ip link set dev [some interface] master br0, and bring br0 up/give it an ip/test it.
If that works, it's time to start looking harder at libvirt(d). |
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juliedeville
n00b
Joined: 14 Oct 2024
Posts: 35
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| Posted: Sun Nov 03, 2024 6:10 pm Post subject: |
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Thank you. When I try to create a bridge manually, I get "Error: Unknown device type"
Edit: It's fixed now! I think I might have been loading the wrong kernel after I enabled the bridge params |
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