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5a148ce846
Libvirtd has long had integration with avahi for advertising libvirtd
using mDNS when TCP/TLS listening is enabled. For a long time the
virt-manager application had support for auto-detecting libvirtds
on the local network using mDNS, but this was removed last year
commit fc8f8d5d7e3ba80a0771df19cf20e84a05ed2422
Author: Cole Robinson <crobinso@redhat.com>
Date: Sat Oct 6 20:55:31 2018 -0400
connect: Drop avahi support
Libvirtd can advertise itself over avahi. The feature is disabled by
default though and in practice I hear of no one actually using it
and frankly I don't think it's all that useful
The 'Open Connection' wizard has a disproportionate amount of code
devoted to this feature, but I don't think it's useful or worth
maintaining, so let's drop it
I've never heard of any other applications having support for using
mDNS to detect libvirtd instances. Though it is theoretically possible
something exists out there, it is clearly going to be a niche use case
in the virt ecosystem as a whole.
By removing avahi integration we can cut down the dependency chain for
the basic libvirtd install and reduce our code maint burden.
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
179 lines
6.6 KiB
Plaintext
179 lines
6.6 KiB
Plaintext
# Master libvirt daemon configuration file
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#
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# For further information consult https://libvirt.org/format.html
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#################################################################
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#
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# Network connectivitiy controls
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#
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# Flag listening for secure TLS connections on the public TCP/IP port.
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# NB, must pass the --listen flag to the libvirtd process for this to
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# have any effect.
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#
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# It is necessary to setup a CA and issue server certificates before
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# using this capability.
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#
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# This is enabled by default, uncomment this to disable it
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listen_tls = 0
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# Listen for unencrypted TCP connections on the public TCP/IP port.
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# NB, must pass the --listen flag to the libvirtd process for this to
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# have any effect.
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#
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# Using the TCP socket requires SASL authentication by default. Only
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# SASL mechanisms which support data encryption are allowed. This is
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# DIGEST_MD5 and GSSAPI (Kerberos5)
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#
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# This is disabled by default, uncomment this to enable it.
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listen_tcp = 1
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# Override the port for accepting secure TLS connections
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# This can be a port number, or service name
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#
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tls_port = "16514"
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# Override the port for accepting insecure TCP connections
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# This can be a port number, or service name
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#
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tcp_port = "16509"
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#################################################################
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#
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# UNIX socket access controls
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#
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# Set the UNIX domain socket group ownership. This can be used to
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# allow a 'trusted' set of users access to management capabilities
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# without becoming root.
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#
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# This is restricted to 'root' by default.
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unix_sock_group = "libvirt"
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# Set the UNIX socket permissions for the R/O socket. This is used
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# for monitoring VM status only
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#
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# Default allows any user. If setting group ownership may want to
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# restrict this to:
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unix_sock_ro_perms = "0777"
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# Set the UNIX socket permissions for the R/W socket. This is used
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# for full management of VMs
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#
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# Default allows only root. If PolicyKit is enabled on the socket,
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# the default will change to allow everyone (eg, 0777)
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#
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# If not using PolicyKit and setting group ownership for access
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# control then you may want to relax this to:
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unix_sock_rw_perms = "0770"
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# Set the UNIX socket permissions for the admin interface socket.
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#
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# Default allows only owner (root), do not change it unless you are
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# sure to whom you are exposing the access to
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unix_sock_admin_perms = "0700"
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#################################################################
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#
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# Authentication.
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#
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# - none: do not perform auth checks. If you can connect to the
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# socket you are allowed. This is suitable if there are
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# restrictions on connecting to the socket (eg, UNIX
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# socket permissions), or if there is a lower layer in
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# the network providing auth (eg, TLS/x509 certificates)
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#
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# - sasl: use SASL infrastructure. The actual auth scheme is then
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# controlled from /etc/sasl2/libvirt.conf. For the TCP
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# socket only GSSAPI & DIGEST-MD5 mechanisms will be used.
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# For non-TCP or TLS sockets, any scheme is allowed.
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#
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# - polkit: use PolicyKit to authenticate. This is only suitable
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# for use on the UNIX sockets. The default policy will
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# require a user to supply their own password to gain
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# full read/write access (aka sudo like), while anyone
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# is allowed read/only access.
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#
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# Set an authentication scheme for UNIX read-only sockets
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# By default socket permissions allow anyone to connect
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#
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# To restrict monitoring of domains you may wish to enable
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# an authentication mechanism here
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auth_unix_ro = "none"
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# Set an authentication scheme for UNIX read-write sockets
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# By default socket permissions only allow root. If PolicyKit
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# support was compiled into libvirt, the default will be to
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# use 'polkit' auth.
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#
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# If the unix_sock_rw_perms are changed you may wish to enable
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# an authentication mechanism here
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auth_unix_rw = "none"
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# Change the authentication scheme for TCP sockets.
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#
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# If you don't enable SASL, then all TCP traffic is cleartext.
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# Don't do this outside of a dev/test scenario. For real world
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# use, always enable SASL and use the GSSAPI or DIGEST-MD5
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# mechanism in /etc/sasl2/libvirt.conf
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auth_tcp = "sasl"
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# Change the authentication scheme for TLS sockets.
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#
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# TLS sockets already have encryption provided by the TLS
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# layer, and limited authentication is done by certificates
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#
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# It is possible to make use of any SASL authentication
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# mechanism as well, by using 'sasl' for this option
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auth_tls = "none"
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#################################################################
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#
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# TLS x509 certificate configuration
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#
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# Override the default server key file path
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#
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key_file = "/etc/pki/libvirt/private/serverkey.pem"
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# Override the default server certificate file path
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#
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cert_file = "/etc/pki/libvirt/servercert.pem"
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# Override the default CA certificate path
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#
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ca_file = "/etc/pki/CA/cacert.pem"
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# Specify a certificate revocation list.
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#
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# Defaults to not using a CRL, uncomment to enable it
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crl_file = "/etc/pki/CA/crl.pem"
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#################################################################
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#
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# Authorization controls
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#
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# Flag to disable verification of client certificates
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#
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# Client certificate verification is the primary authentication mechanism.
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# Any client which does not present a certificate signed by the CA
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# will be rejected.
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#
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# Default is to always verify. Uncommenting this will disable
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# verification - make sure an IP whitelist is set
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tls_no_verify_certificate = 1
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# A whitelist of allowed x509 Distinguished Names
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# This list may contain wildcards such as
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#
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# "C=GB,ST=London,L=London,O=Red Hat,CN=*"
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#
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# See the POSIX fnmatch function for the format of the wildcards.
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#
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# NB If this is an empty list, no client can connect, so comment out
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# entirely rather than using empty list to disable these checks
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#
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# By default, no DN's are checked
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tls_allowed_dn_list = [ "DN1", "DN2" ]
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# A whitelist of allowed SASL usernames. The format for usernames
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# depends on the SASL authentication mechanism. Kerberos usernames
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# look like username@REALM
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#
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# This list may contain wildcards such as
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#
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# "*@EXAMPLE.COM"
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#
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# See the POSIX fnmatch function for the format of the wildcards.
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#
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# NB If this is an empty list, no client can connect, so comment out
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# entirely rather than using empty list to disable these checks
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#
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# By default, no Username's are checked
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sasl_allowed_username_list = [ "joe@EXAMPLE.COM", "fred@EXAMPLE.COM" ]
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# UUID of the host:
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# Provide the UUID of the host here in case the command
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# 'dmidecode -s system-uuid' does not provide a valid uuid. In case
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# 'dmidecode' does not provide a valid UUID and none is provided here, a
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# temporary UUID will be generated.
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# Keep the format of the example UUID below.
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host_uuid = "8510b1a1-1afa-4da6-8111-785fae202c1e"
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