Re: [PATCH 4/8] kbase: debuglogs: Section off the settings for legacy libvirt

Move out the settings required to pre libvirt-4.4.0 deployments into a separate section so that the main point is not cluttered by now mostly irrelevant settings. Signed-off-by: Peter Krempa <pkrempa(a)redhat.com&gt; --- docs/kbase/debuglogs.rst | 48 +++++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 20 deletions(-) diff --git a/docs/kbase/debuglogs.rst b/docs/kbase/debuglogs.rst index e0115bd23f..cba57e020d 100644 --- a/docs/kbase/debuglogs.rst +++ b/docs/kbase/debuglogs.rst @@ -33,14 +33,6 @@ URI <https://libvirt.org/uri.html>`__. For ``qemu:///system``: :: - # LEGACY SETTINGS PRIOR LIBVIRT 4.4.0 SEE BELOW! # - log_level = 1 - log_filters="1:qemu 3:remote 4:event 3:util.json 3:rpc" - log_outputs="1:file:/var/log/libvirt/libvirtd.log" - -:: - - # PREFERRED SETTINGS AFTER LIBVIRT 4.4.0 # log_filters="3:remote 4:event 3:util.json 3:rpc 1:*" log_outputs="1:file:/var/log/libvirt/libvirtd.log" @@ -51,12 +43,10 @@ URI <https://libvirt.org/uri.html>`__. For ``qemu:///system``: systemctl restart libvirtd.service -In the config variables above, we have set logging level to 1 (debug level), set -some filters (to filter out noise), e.g. from rpc only warnings (=level 3) and -above will be reported. The logs are saved into -``/var/log/libvirt/libvirtd.log``. Since libvirt **4.4.0** log filters support -shell globbing, therefore the usage of ``log_level`` is considered deprecated in -favour of pure usage of ``log_filters``. + +*Note:* Libvirt prior to the ``libvirt-4.4.0`` release didn't support globbing +patterns and thus requires more configuration. See +`Legacy (pre-4.4.0) libvirt daemon logging configuration`_. In case you want to get the client logs, you need to set this environment variable: @@ -91,12 +81,6 @@ own set of filters: :: - ## LEGACY APPROACH ENUMERATING ALL THE DESIRED MODULES ## - # virt-admin daemon-log-filters "1:util 1:libvirt 1:storage 1:network 1:nodedev 1:qemu" - -:: - - ## CURRENT APPROACH USING SHELL GLOBBING ## # virt-admin daemon-log-filters "3:remote 4:util.json 4:rpc 1:*" Analogically, the same procedure can be performed with log outputs: @@ -193,3 +177,27 @@ This filter logs only QMP traffic and skips most of libvirt's messages. :: 2:qemu.qemu_monitor 3:* + + +Legacy (pre-4.4.0) libvirt daemon logging configuration +=======================================================

+ +Old libvirt versions didn't support globbing (e.g. ``1:*``) to configure logging +wildcarts, thus it's required to explicitly set logging level to 1 (debug level)

+via the ``log_level`` setting and then filter out the noise via targetted log +filters.

+ +:: + + # LEGACY SETTINGS PRIOR LIBVIRT 4.4.0 + log_level = 1 + log_filters="1:qemu 3:remote 4:event 3:util.json 3:rpc" + log_outputs="1:file:/var/log/libvirt/libvirtd.log" + + +Or using ``virt-admin``: + +:: + + ## LEGACY APPROACH ENUMERATING ALL THE DESIRED MODULES ## + # virt-admin daemon-log-filters "1:util 1:libvirt 1:storage 1:network 1:nodedev 1:qemu" -- 2.34.1