[GH-ISSUE #210] Error: authentication failed: no agent is available to authenticate #141

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opened 2026-02-27 15:57:29 +03:00 by kerem · 2 comments

kerem commented

2026-02-27 15:57:29 +03:00

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Originally created by @AysadKozanoglu on GitHub (Dec 22, 2018).
Original GitHub issue: https://github.com/retspen/webvirtcloud/issues/210

I installed Webvirtcloud on Debian Jessie (8.10) and Debian Stretch (9)

Error:

Error: authentication failed: no agent is available to authenticate

Details:

After installation was successfully i logged with admin:admin my first Web gui login.
I got the following error
"Error: authentication failed: no agent is available to authenticate "
or
" Error: authentication unavailable: no polkit agent available to authenticate action 'org.libvirt.unix.manage' "

Solution (maybe dirty):
I modified the /etc/libvirt/libvirtd.conf and set the auth_unix_rw on none

vim /etc/libvirt/libvirtd.conf
<<
auth_unix_rw = "none"

service libvirtd restart

And everything works nice now.

Background info about auth_unix_rw:

Set an authentication scheme for UNIX read-write sockets By default socket permissions only allow root. If PolicyKit support was compiled into libvirt, the default will be to use 'polkit' auth. If the unix_sock_rw_perms are changed you may wish to enable an authentication mechanism here

[issue can be closed]

Originally created by @AysadKozanoglu on GitHub (Dec 22, 2018). Original GitHub issue: https://github.com/retspen/webvirtcloud/issues/210 I installed Webvirtcloud on Debian Jessie (8.10) and Debian Stretch (9) #### Error: Error: authentication failed: no agent is available to authenticate #### Details: After installation was successfully i logged with admin:admin my first Web gui login. I got the following error "Error: authentication failed: no agent is available to authenticate " or " Error: authentication unavailable: no polkit agent available to authenticate action 'org.libvirt.unix.manage' " Solution (maybe dirty): I modified the /etc/libvirt/libvirtd.conf and set the auth_unix_rw on none vim /etc/libvirt/libvirtd.conf << auth_unix_rw = "none" >> service libvirtd restart And everything works nice now. #### Background info about auth_unix_rw: Set an authentication scheme for UNIX read-write sockets By default socket permissions only allow root. If PolicyKit support was compiled into libvirt, the default will be to use 'polkit' auth. If the unix_sock_rw_perms are changed you may wish to enable an authentication mechanism here [issue can be closed]