Changelog

Next release

Full Changelog

Merged pull requests:

Add Erlang to Apps configuration #16231 (andyundso)
update go.d plugin version to v0.56.3 #16228 (ilyam8)
Changes to systemd-journal docs #16225 (Ancairon)
Fix meta unittest #16221 (stelfrag)
facets: minimize hashtable collisions #16215 (ktsaou)
cgroup-network: don't log an error opening pid file if doesn't exist #16196 (ilyam8)

v1.43.0 (2023-10-16)

Full Changelog

Merged pull requests:

update bundled UI to v6.52.2 #16219 (ilyam8)
dynamic meta queue size #16218 (ktsaou)
update bundled UI to v6.52.1 #16217 (ilyam8)
update bundled UI to v6.52.0 #16216 (ilyam8)
disable logging to syslog by default #16214 (ilyam8)
add summary to /alerts #16213 (MrZammler)
registry action hello should always work #16212 (ktsaou)
apps: fix divide by zero when calc avg uptime #16211 (ilyam8)
allow patterns in journal queries #16210 (ktsaou)
ui-6.51.0 #16208 (ktsaou)
add order in available histograms #16204 (ktsaou)
update ui to 6.50.2 again #16202 (ktsaou)
update ui to 6.50.2 #16201 (ktsaou)
Regenerate integrations.js #16200 (netdatabot)
health: attach drops ratio alarms to net.drops #16199 (ilyam8)
apps: always expose "other" group #16198 (ilyam8)
journal timeout #16195 (ktsaou)
systemd-journal timeout to 55 secs #16194 (ktsaou)
update bundled UI to v6.49.0 #16192 (ilyam8)
Faster facets #16190 (ktsaou)
Journal updates #16189 (ktsaou)
Add agent version on startup #16188 (stelfrag)
Suppress "families" log #16186 (stelfrag)
Fix access of memory after free #16185 (stelfrag)
functions columns #16184 (ktsaou)
disable _go_build in centos 8 & 9 #16183 (tkatsoulas)
Regenerate integrations.js #16182 (netdatabot)
update go.d to v0.56.2 #16181 (ilyam8)
Add support for Fedora 39 native packages into our CI #16180 (tkatsoulas)
Add support for Ubuntu 23.10 native packages into our CI #16179 (tkatsoulas)
Update bundled static packages #16177 (tkatsoulas)
Regenerate integrations.js #16176 (netdatabot)
facets: do not corrupt the index when doubling the hashtable #16171 (ktsaou)
Add icons to integrations markdown files #16169 (Ancairon)
Fix netdata-uninstaller; blindly deletes NETDATA_PREFIX env var #16167 (tkatsoulas)
apps: remove mem_private on FreeBSD #16166 (ilyam8)
fix repo path for openSUSE 15.5 packages #16161 (tkatsoulas)
Modify eBPF exit #16159 (thiagoftsm)
Fix compilation warnings #16158 (stelfrag)
Don't queue removed when there is a newer alert #16157 (MrZammler)
docker: make chmod o+rX / non fatal #16156 (ilyam8)
Batch ML model load commands #16155 (stelfrag)
[BUGFIX] MQTT ARM fix #16154 (underhood)
Rework guide, add SSL with self-signed certs #16153 (tkatsoulas)
make io charts "write" negative in apps and cgroups (systemd) #16152 (ilyam8)
journal: updates #16150 (ktsaou)
uninstaller: remove ND systemd preset and tmp dir #16148 (ilyam8)
fix test -x check for uninstaller script #16146 (ilyam8)
health: don't log an unknown key error for "families" #16145 (ilyam8)
Regenerate integrations.js #16144 (netdatabot)
Update python.d./varnish/metadata.yaml #16143 (Ancairon)
Bugfix in integrations/setup/template #16142 (Ancairon)
Fixes in integration generation script #16141 (Ancairon)
Introduce stringify function for integrations #16140 (Ancairon)
Regenerate integrations.js #16138 (netdatabot)
fix random crashes on pthread_detach() #16137 (ktsaou)
fix journal help and mark debug keys in the output #16133 (ktsaou)
Regenerate integrations.js #16132 (netdatabot)
apps: change user_group to usergroup #16131 (ilyam8)
Retain a list structure instead of a set for data collection integrations categories #16130 (Ancairon)
Add summary to alerts configurations #16129 (MrZammler)
Remove multiple categories due to bug #16126 (Ancairon)
Regenerate integrations.js #16125 (netdatabot)
update UI to v6.45.0 #16124 (ilyam8)
journal: fix the 1 second latency in play mode #16123 (ktsaou)
fix proc netstat metrics #16122 (ilyam8)
dont strip newlines when forwarding FUNCTION_PAYLOAD #16120 (underhood)
Do not force OOMKill #16115 (thiagoftsm)
fix crash on parsing clabel command with no source #16114 (ilyam8)
update UI to v6.43.0 #16112 (ilyam8)
Regenerate integrations.js #16111 (netdatabot)
journal: respect anchor on non-data-only queries #16109 (ktsaou)
Fix in generate integrations docs script #16108 (Ancairon)
journal: go up to stop anchor on data only queries #16107 (ktsaou)
Update collectors/python.d.plugin/pandas/metadata.yaml #16106 (Ancairon)
Code improvements #16104 (stelfrag)
Regenerate integrations.js #16103 (netdatabot)
Add integrations/cloud-notifications to cleanup #16102 (Ancairon)
better journal logging #16101 (ktsaou)
update UI to v6.42.2 #16100 (ilyam8)
a simple journal optimization #16099 (ktsaou)
journal: fix incremental queries #16098 (ktsaou)
Update categories.yaml #16097 (Ancairon)
Fix systemd-journal.plugin README and prepare it for Learn #16096 (Ancairon)
Split apps charts #16095 (thiagoftsm)
fix querying out of retention #16094 (ktsaou)
Regenerate integrations.js #16093 (netdatabot)
update go.d.plugin to v0.56.1 #16092 (ilyam8)
update UI to v6.42.1 #16091 (ilyam8)
dont use sd_journal_open_files_fd() that is buggy on older libsystemd #16090 (ktsaou)
external plugins: respect env NETDATA_LOG_SEVERITY_LEVEL #16089 (ilyam8)
update UI to v6.42.0 #16088 (ilyam8)
functions: prevent a busy wait loop #16086 (ktsaou)
charts.d: respect env NETDATA_LOG_SEVERITY_LEVEL #16085 (ilyam8)
python.d: respect env NETDATA_LOG_SEVERITY_LEVEL #16084 (ilyam8)
Address reported socket issue #16083 (thiagoftsm)
Change @linuxnetdata to @netdatahq #16082 (ralphm)
[Integrations Docs] Add a badge for either netdata or community maintained #16073 (Ancairon)
Skip database migration steps in new installation #16071 (stelfrag)
Improve description about tc.plugin #16068 (thiagoftsm)
Regenerate integrations.js #16062 (netdatabot)
update go.d version to v0.56.0 #16061 (ilyam8)
Bugfix on integrations/gen_docs_integrations.py #16059 (Ancairon)
Fix coverity 402975 #16058 (stelfrag)
Send alerts summary field to cloud #16056 (MrZammler)
update bundled ui version to v6.41.1 #16054 (ilyam8)
Update to use versioned base images for CI. #16053 (Ferroin)
Fix missing find command when installing/updating on Rocky Linux systems. #16052 (Ferroin)
Fix summary field in table #16050 (MrZammler)
Switch to uint64_t to avoid overflow in 32bit systems #16048 (stelfrag)
Convert the ML database #16046 (stelfrag)
Regenerate integrations.js #16044 (netdatabot)
Doc about running a local dashboard through Cloudflare (community) #16043 (Ancairon)
Have one documentation page about Netdata Charts #16042 (Ancairon)
Remove discontinued Hangouts and StackPulse notification methods #16041 (Ancairon)
systemd-Journal by file #16038 (ktsaou)
health: add upsd alerts #16036 (ilyam8)
Disable mongodb exporter builds where broken. #16033 (Ferroin)
Run health queries from tier 0 #16032 (MrZammler)
use status as units for anomaly_detection.detector_events #16028 (andrewm4894)
add description for Homebrew on Apple Silicon Mac(netdata/learn/#1789) #16027 (theggs)
Fix package builds on Rocky Linux. #16026 (Ferroin)
Remove family from alerts #16025 (MrZammler)
add systemd-journal.plugin to apps_groups.conf #16024 (ilyam8)
Fix handling of CI skipping. #16022 (Ferroin)
update bundled UI to v6.39.0 #16020 (ilyam8)
Update collector metadata for python collectors #16019 (tkatsoulas)
fix crash on setting thread name #16016 (ilyam8)
Systemd-Journal: fix crash when the uid or gid do not have names #16015 (ktsaou)
Avoid duplicate keys in labels #16014 (stelfrag)
remove the line length limit from pluginsd #16013 (ktsaou)
Regenerate integrations.js #16011 (netdatabot)
Simplify the script for generating documentation from integrations #16009 (Ancairon)
some collector metadata improvements #16008 (andrewm4894)
Fix compilation warnings #16006 (stelfrag)
Update CMakeLists.txt #16005 (stelfrag)
eBPF socket: function with event loop #16004 (thiagoftsm)
fix compilation warnings #16001 (ktsaou)
Update integrations/gen_docs_integrations.py #15997 (Ancairon)
Make collectors/COLLECTORS.md have its list autogenerated from integrations.js #15995 (Ancairon)
Regenerate integrations.js #15985 (netdatabot)
Re-store rrdvars on late dimensions #15984 (MrZammler)
Functions: allow collectors to be restarted #15983 (ktsaou)
Metadata fixes for some collectors #15982 (Ancairon)
update go.d.plugin to v0.55.0 #15981 (ilyam8)
bump UI to v6.37.1 #15980 (ilyam8)
Maintain node's last connected timestamp in the db #15979 (stelfrag)
apps.plugin function is not thread safe #15978 (ktsaou)
functions cancelling #15977 (ktsaou)
Facets: fixes 5 #15976 (ktsaou)
Split cgroup charts #15975 (thiagoftsm)
facets histogram: do not send db retention for facets #15974 (ktsaou)
extend ml default training from ~24 to ~48 hours #15971 (andrewm4894)
facets histogram when empty #15970 (ktsaou)
facets: do not shadow local variable #15968 (ktsaou)
Skip trying to preserve file owners when bundling external code. #15966 (Ferroin)
fix using undefined var when loading job statuses in python.d #15965 (ilyam8)
facets: data-only queries #15961 (ktsaou)
Clarify shipping repos cases #15960 (tkatsoulas)
Clarifying the possible installation types #15958 (tkatsoulas)
fix journal direction parsing #15957 (ktsaou)
facets and journal improvements #15956 (ktsaou)
Preserve README info inside metadata.yaml for freeipmi.plugin #15955 (Ancairon)
Fix CID 400366 #15953 (stelfrag)
Update descriptions. #15952 (thiagoftsm)
Update slabinfo metadata #15951 (thiagoftsm)
Disk Labels #15949 (ktsaou)
streaming logs #15948 (ktsaou)
Regenerate integrations.js #15946 (netdatabot)
Integrations: Add a note to enable the collectors #15945 (MrZammler)
Change the build image of EL packages from alma to rocky #15944 (tkatsoulas)
Integrations: Add a note to install charts.d plugin #15943 (MrZammler)
Add description about packages #15941 (thiagoftsm)
facets optimizations #15940 (ktsaou)
improved facets info #15936 (ktsaou)
feat: Adds access control configuration for ntfy #15932 (miversen33)
fix memory leak on prometheus exporter and code cleanup #15929 (ktsaou)
systemd-journal and facets: info and sources #15928 (ktsaou)
systemd-journal and facets improvements #15926 (ktsaou)
add specific info on how to access the dashboards #15925 (hugovalente-pm)
Reduce workload during cleanup #15919 (stelfrag)
Replace _ with spaces for name variable for ntfy #15909 (MAH69IK)
python.d/sensors: Increase voltage limits 127 -> 400 #15905 (kylemanna)
Assorted Dockerfile cleanup. #15902 (Ferroin)
Improve shutdown of the metadata thread #15901 (stelfrag)
bump ui to v6.32.0 #15897 (andrewm4894)
Update change-metrics-storage.md #15896 (Ancairon)
make anomaly_detection.type_anomaly_rate stacked #15895 (andrewm4894)
Update pfsense.md #15894 (Ancairon)
Initial tooling for Integrations Documentation #15893 (Ancairon)
Reset the obsolete flag on service thread #15892 (MrZammler)
Add better recovery for corrupted metadata #15891 (stelfrag)
Add index to ACLK table to improve update statements #15890 (stelfrag)
Limit atomic operations for statistics #15887 (ktsaou)
Add a summary field to alerts #15886 (MrZammler)
Properly document issues with installing on hosts without IPv4. #15882 (Ferroin)
allow any field to be a facet #15880 (ktsaou)
Regenerate integrations.js #15879 (netdatabot)
use the newer XXH3 128bits algorithm, instead of the classic XXH128 #15878 (ktsaou)
Skip copying environment/install-type files when checking existing installs. #15876 (Ferroin)
ML add new delete old models param to readme #15873 (andrewm4894)
Update SQLITE version to 3.42.0 #15870 (stelfrag)
Regenerate integrations.js #15867 (netdatabot)
Add a fail reason to pinpoint exactly what went wrong #15866 (stelfrag)
Add plugin and module information to collector integrations. #15864 (Ferroin)
Regenerate integrations.js #15862 (netdatabot)
Explicitly depend on version-matched plugins in native packages. #15861 (Ferroin)
Apply a label prefix for netdata labels #15860 (kevin-fwu)
fix proc meminfo cached calculation #15859 (ilyam8)
Fix compilation warnings #15858 (stelfrag)
packaging cleanup after #15842 #15857 (ilyam8)
Add a chart that groups anomaly rate by chart type. #15856 (vkalintiris)
fix packaging static build openssl 32bit #15855 (ilyam8)
fix packaging mark stable static build #15854 (ilyam8)
eBPF socket function #15850 (thiagoftsm)
Facets histograms #15846 (ktsaou)
reworked pluginsd caching of RDAs to avoid crashes #15845 (ktsaou)
Fix static build SSL #15842 (ktsaou)
bump bundled ui to v6.29.0 #15841 (ilyam8)
Fix configure: WARNING: unrecognized options: --with-zlib #15840 (stelfrag)
Fix compilation warning #15839 (stelfrag)
Fix warning when compiling with -flto #15838 (stelfrag)
workaround for systems that do not have SD_JOURNAL_OS_ROOT #15837 (ktsaou)
added ilove.html #15836 (ktsaou)
Fix CID 382964: Code maintainability issues (SIZEOF_MISMATCH) #15833 (stelfrag)
Fix coverity 393052: API usage errors (LOCK) #15832 (stelfrag)
systemd-journal in containers #15830 (ktsaou)
RPM: fixed attrs for conf.d dirs #15828 (k0ste)
Avoid resource leak #15827 (stelfrag)
Release fd if setsockopt or bind fails #15826 (stelfrag)
Fix use after free #15825 (stelfrag)
Improve dyncfg exit #15824 (underhood)
Release job message status to avoid memory leak #15822 (stelfrag)
ML improve init #15819 (stelfrag)
Update cmakelist #15817 (stelfrag)
added /api/v2/ilove.svg endpoint #15815 (ktsaou)
systemd-journal fixes #15814 (ktsaou)
fix packaging: link health.log to stdout #15813 (ilyam8)
docs rename alarm to alert #15812 (ilyam8)
bump ui to v6.28.0 #15810 (ilyam8)
return 412 instead of 403 when a bearer token is required #15808 (ktsaou)
installer setuid fallback for perf and slabinfo plugins #15807 (ilyam8)
fix api v1 mgmt/health #15806 (underhood)
Fix systemd journal build deps in DEB packages. #15805 (Ferroin)
Clean up python deps for RPM packages. #15804 (Ferroin)
Add proper SUID fallback for DEB plugin packages. #15803 (Ferroin)
nfacct.plugin increase restart time from 4 hours to 1 day #15801 (ilyam8)
Function systemd-journal: always have a nd_journal_process #15798 (ktsaou)
prevent reporting negative retention when the db is empty #15796 (ktsaou)
Fix typo in Readme #15794 (shyamvalsan)
fix hpssa handle unassigned drives #15793 (ilyam8)
Dyncfg add streaming support #15791 (underhood)
count functions as collections, to restart plugins #15787 (ktsaou)
Set correct path for ansible-playbook in deployment tutorial #15786 (novotnyJiri)
minor Dyncfg mvp0 fixes #15785 (underhood)
fix docker-compose example #15784 (zhqu1148980644)
mark integrations milestones as completed in README.md #15783 (tkatsoulas)
Update an oversight on the openSUSE 15.5 packages #15781 (tkatsoulas)
Bump openssl version of static builds to 1.1.1v #15779 (tkatsoulas)
fix: the cleanup was not performed during the kickstart.sh dry run #15775 (ilyam8)
don't return -1 if the socket was closed #15771 (moonbreon)
Increase alert snapshot chunk size #15748 (MrZammler)
Added CentOS-Stream to distros #15742 (k0ste)
Unconditionally delete very old models. #15720 (vkalintiris)
Misc code cleanup #15665 (stelfrag)
Documentation for Dynamic Configuration #15643 (underhood)

v1.42.4 (2023-09-18)

Full Changelog

v1.42.3 (2023-09-11)

Full Changelog

v1.42.2 (2023-08-28)

Full Changelog

v1.42.1 (2023-08-16)

Full Changelog

v1.42.0 (2023-08-09)

Full Changelog

Merged pull requests:

ci: codacy exclude web/gui/v2/ #15780 (ilyam8)
update UI to v6.27.0 #15778 (ilyam8)
ci: fix labeler area/docs #15776 (ilyam8)
fix claiming via UI for static build #15774 (ilyam8)
extend the trimming window to avoid empty points at the end of queries #15773 (ktsaou)
Regenerate integrations.js #15772 (netdatabot)
Change FreeBSD / macOS system.swap(io) to mem.swap(io) #15769 (Dim-P)
update ui to v6.26.3 #15767 (ilyam8)
Fix CID 398318 #15766 (underhood)
Fix coverity issues introduced via drm proc module #15765 (Dim-P)
Regenerate integrations.js #15764 (netdatabot)
meta update proc drm icon #15763 (ilyam8)
Update metadata.yaml #15762 (ktsaou)
Update metadata.yaml #15761 (ktsaou)
Regenerate integrations.js #15760 (netdatabot)
fix nvidia_smi power_readings for new drivers #15759 (ilyam8)
update bundled UI to v2.26.2 #15758 (ilyam8)
Regenerate integrations.js #15751 (netdatabot)
ci labeler: remove integrations from area/docs #15750 (ilyam8)
meta: align left metrics, alerts, and config options #15749 (ilyam8)
Add dependencies for systemd journal plugin. #15747 (Ferroin)
prefer cap over setuid for sysetmd-journal in installer #15741 (ilyam8)
[cloud-blocker] https_client add TLS ext. SNI + support chunked transfer encoding #15739 (underhood)
Don't overwrite my vscode settings! #15738 (underhood)
faster facets and journal fixes #15737 (ktsaou)
Adjust namespace used for sd_journal_open #15736 (stelfrag)
Update to latest copy of v2 dashboard. #15735 (Ferroin)
Add netdata-plugin-systemd-journal package. #15733 (Ferroin)
proc.plugin: dont log if pressure/irq does not exist #15732 (ilyam8)
ci: run "Generate Integrations" only in netdata/netdata #15731 (ilyam8)
Regenerate integrations.js #15728 (netdatabot)
fix systemd-journal makefile #15727 (ktsaou)
disable systemdunits alarms #15726 (ilyam8)
Fix memory corruption #15724 (stelfrag)
Revert "Refactor RRD code. (#15423)" #15723 (vkalintiris)
Changes to the templates for integrations #15721 (Ancairon)
fix the freez pointer of dyncfg #15719 (ktsaou)
Update the bundled v2 dashboard to the latest release. #15718 (Ferroin)
Regenerate integrations.js #15717 (netdatabot)
fix meta deploy docker swarm NC env var #15716 (ilyam8)
Regenerate integrations.js #15713 (netdatabot)
Update metadata.yaml #15710 (sashwathn)
Regenerate integrations.js #15709 (netdatabot)
integrations: fix docker compose indent #15708 (ilyam8)
Better cleanup of aclk alert table entries #15706 (MrZammler)
Regenerate integrations.js #15705 (netdatabot)
Fix typo in categories for beanstalk collector metadata. #15703 (Ferroin)
Assorted fixes for integrations templates. #15702 (Ferroin)
integrations: fix metrics availability #15701 (ilyam8)
Fix handling of troubleshooting section in integrations. #15700 (Ferroin)
update vscode yaml schemas association #15697 (ilyam8)
Update categories.yaml #15696 (sashwathn)
Regenerate integrations.js #15695 (netdatabot)
Extend eBPF default shutdown #15694 (thiagoftsm)
Fix integrations regen workflow #15693 (Ferroin)
bump go.d.plugin v0.54.1 #15692 (ilyam8)
Update names #15691 (thiagoftsm)
Update metadata.yaml #15690 (sashwathn)
Update categories.yaml #15689 (sashwathn)
Update metadata.yaml #15688 (sashwathn)
Update deploy.yaml #15687 (sashwathn)
Update categories.yaml #15686 (sashwathn)
Update categories.yaml #15685 (sashwathn)
Update metadata.yaml #15684 (sashwathn)
Update categories.yaml #15683 (sashwathn)
Update categories.yaml #15682 (sashwathn)
Update categories.yaml #15681 (sashwathn)
Update metadata.yaml #15680 (sashwathn)
Update metadata.yaml #15679 (shyamvalsan)
Update metadata.yaml #15678 (sashwathn)
Update Webhook icon #15677 (sashwathn)
Update deploy.yaml to fix Docker and Kubernetes commands #15676 (sashwathn)
meta MacOS => macOS #15675 (ilyam8)
Adapt Cloud notifications to the new schema #15674 (sashwathn)
Fix formatting #15673 (shyamvalsan)
Fixing tables (aws sns) #15671 (shyamvalsan)
Update metadata.yaml for Cloud Notifications #15670 (sashwathn)
remove " Metrics" from linux categories #15669 (ilyam8)
Fix table formatting (custom exporter) #15668 (shyamvalsan)
Fix icon prometheus exporter icon #15666 (hugovalente-pm)
freeipmi change restart message to info #15664 (ilyam8)
fix proc.plugin meta filename #15659 (ilyam8)
small improvements to README.md #15658 (ilyam8)
Fix icon for solarwinds #15657 (hugovalente-pm)
Fix Apps plugin icons #15655 (hugovalente-pm)
fix pandas category #15654 (andrewm4894)
Fix exporter icons #15652 (shyamvalsan)
disable freeipmi in docker by default #15651 (ilyam8)
Fixing FreeBSD icons #15650 (shyamvalsan)
Fix exporter schema to support multiple entries per file. #15649 (Ferroin)
Fixing icons in netdata/netdata repo #15647 (shyamvalsan)
Fix name in the yaml of example python collector #15646 (Ancairon)
Fix icons #15645 (hugovalente-pm)
Fix icons for notifications #15644 (shyamvalsan)
convert collectors meta files from single to multi #15642 (ilyam8)
fix edit-config for containerized Netdata when running from host #15641 (ilyam8)
fix: 🐛 docker bind-mount stock files creation #15639 (Leny1996)
The icon_filename value was not in quotes - Fixed #15635 (sashwathn)
Update graphite metadata.yaml #15634 (shyamvalsan)
Debugfs yaml update #15633 (thiagoftsm)
Update metadata.yaml #15632 (shyamvalsan)
review images for integrations from security to windows systems #15630 (hugovalente-pm)
bump ui to v6.23.0 #15629 (ilyam8)
Updated Cloud Notification Integrations with the new schema #15628 (sashwathn)
Add additional variable section to instance data in schema. #15627 (Ferroin)
fix icons for message brokers and hardware #15626 (hugovalente-pm)
Add key for notifications to control what global config options get displayed #15625 (Ferroin)
fix icons for webservers integrations #15624 (hugovalente-pm)
Add notification metadata for agent notifications #15622 (shyamvalsan)
fix icons for db integrations #15621 (hugovalente-pm)
Rename multi_metadata.yaml to metadata.yaml #15619 (shyamvalsan)
Rename multi_metadata.yaml to metadata.yaml #15618 (shyamvalsan)
Fix up notification schema to better support cloud notifications. #15616 (Ferroin)
Updated all cloud notifications except generic webhook #15615 (sashwathn)
prefer titles, families, units and priorities from collected charts #15614 (ktsaou)
Update categories.yaml to add notifications #15613 (sashwathn)
ci disable yamllint line-length check #15612 (ilyam8)
Fix descriptions in config objects, make them single line #15610 (Ancairon)
Update icons #15609 (shyamvalsan)