mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-11-02 19:31:18 +00:00
b16f47ab61
This is the part allowing to dynamically resize the debug log buffer from it's default 64kB size. The buffer is now dynamically allocated. It adds a new API virLogSetBufferSize() which resizes the buffer If passed a zero size, the buffer is deallocated and we do the small optimization of not formatting messages which are not output anymore. On the daemon side, it just adds a new option log_buffer_size to libvirtd.conf and call virLogSetBufferSize() if needed * src/util/logging.h src/util/logging.c src/libvirt_private.syms: make buffer dynamic and add virLogSetBufferSize() internal API * daemon/libvirtd.conf: document the new log_buffer_size option * daemon/libvirtd.c: read and use the new log_buffer_size option
354 lines
11 KiB
Plaintext
354 lines
11 KiB
Plaintext
# Master libvirt daemon configuration file
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#
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# For further information consult http://libvirt.org/format.html
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#
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# NOTE: the tests/daemon-conf regression test script requires
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# that each "PARAMETER = VALUE" line in this file have the parameter
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# name just after a leading "#".
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#################################################################
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#
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# Network connectivity 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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# Override the default configuration which binds to all network
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# interfaces. This can be a numeric IPv4/6 address, or hostname
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#
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#listen_addr = "192.168.0.1"
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# Flag toggling mDNS advertizement of the libvirt service.
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#
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# Alternatively can disable for all services on a host by
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# stopping the Avahi daemon
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#
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# This is enabled by default, uncomment this to disable it
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#mdns_adv = 0
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# Override the default mDNS advertizement name. This must be
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# unique on the immediate broadcast network.
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#
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# The default is "Virtualization Host HOSTNAME", where HOSTNAME
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# is subsituted for the short hostname of the machine (without domain)
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#
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#mdns_name = "Virtualization Host Joe Demo"
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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 name of the directory in which sockets will be found/created.
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#unix_sock_dir = "/var/run/libvirt"
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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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#################################################################
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#
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# Processing controls
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#
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# The maximum number of concurrent client connections to allow
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# over all sockets combined.
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#max_clients = 20
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# The minimum limit sets the number of workers to start up
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# initially. If the number of active clients exceeds this,
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# then more threads are spawned, upto max_workers limit.
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# Typically you'd want max_workers to equal maximum number
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# of clients allowed
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#min_workers = 5
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#max_workers = 20
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# Total global limit on concurrent RPC calls. Should be
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# at least as large as max_workers. Beyond this, RPC requests
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# will be read into memory and queued. This directly impact
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# memory usage, currently each request requires 256 KB of
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# memory. So by default upto 5 MB of memory is used
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#
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# XXX this isn't actually enforced yet, only the per-client
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# limit is used so far
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#max_requests = 20
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# Limit on concurrent requests from a single client
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# connection. To avoid one client monopolizing the server
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# this should be a small fraction of the global max_requests
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# and max_workers parameter
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#max_client_requests = 5
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#################################################################
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#
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# Logging controls
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#
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# Logging level: 4 errors, 3 warnings, 2 informations, 1 debug
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# basically 1 will log everything possible
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#log_level = 3
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# Logging filters:
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# A filter allows to select a different logging level for a given category
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# of logs
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# The format for a filter is:
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# x:name
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# where name is a match string e.g. remote or qemu
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# the x prefix is the minimal level where matching messages should be logged
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# 1: DEBUG
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# 2: INFO
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# 3: WARNING
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# 4: ERROR
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#
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# Multiple filter can be defined in a single @filters, they just need to be
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# separated by spaces.
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#
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# e.g:
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# log_filters="3:remote 4:event"
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# to only get warning or errors from the remote layer and only errors from
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# the event layer.
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# Logging outputs:
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# An output is one of the places to save logging informations
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# The format for an output can be:
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# x:stderr
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# output goes to stderr
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# x:syslog:name
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# use syslog for the output and use the given name as the ident
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# x:file:file_path
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# output to a file, with the given filepath
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# In all case the x prefix is the minimal level, acting as a filter
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# 1: DEBUG
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# 2: INFO
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# 3: WARNING
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# 4: ERROR
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#
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# Multiple output can be defined, they just need to be separated by spaces.
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# e.g.:
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# log_outputs="3:syslog:libvirtd"
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# to log all warnings and errors to syslog under the libvirtd ident
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# Log debug buffer size: default 64
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# The daemon keeps an internal debug log buffer which will be dumped in case
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# of crash or upon receiving a SIGUSR2 signal. This setting allows to override
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# the default buffer size in kilobytes.
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# If value is 0 or less the debug log buffer is deactivated
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#log_buffer_size = 64
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##################################################################
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#
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# Auditing
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#
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# This setting allows usage of the auditing subsystem to be altered:
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#
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# audit_level == 0 -> disable all auditing
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# audit_level == 1 -> enable auditing, only if enabled on host (default)
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# audit_level == 2 -> enable auditing, and exit if disabled on host
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#
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#audit_level = 2
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#
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# If set to 1, then audit messages will also be sent
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# via libvirt logging infrastructure. Defaults to 0
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#
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#audit_logging = 1
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###################################################################
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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. UUID must not have all digits
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# be the same.
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# NB This default all-zeros UUID will not work. Replace
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# it with the output of the 'uuidgen' command and then
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# uncomment this entry
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#host_uuid = "00000000-0000-0000-0000-000000000000"
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