Daemon configuration
The daemon configuration file is read from /etc/netdata/netdata.conf.
Depending on your installation method, Netdata will have been installed either directly under /
, or
under /opt/netdata
. The paths mentioned here and in the documentation in general assume that your installation is
under /
. If it is not, you will find the exact same paths under /opt/netdata
as well. (i.e. /etc/netdata
will
be /opt/netdata/etc/netdata
).
This config file is not needed by default. Netdata works fine out of the box without it. But it does allow you to
adapt the general behavior of Netdata, in great detail. You can find all these settings, with their default values, by
accessing the URL https://netdata.server.hostname:19999/netdata.conf
. For example check the configuration file
of netdata.firehol.org. HTTP access to this file is limited by default to
private IPs, via
the web server access lists.
netdata.conf
has sections stated with [section]
. You will see the following sections:
[global]
to configure the Netdata daemon.[db]
to configure the database of Netdata.[directories]
to configure the directories used by Netdata.[logs]
to configure the Netdata logging.[environment variables]
to configure the environment variables used Netdata.[sqlite]
to configure the Netdata daemon SQLite settings.[ml]
to configure settings for machine learning.[health]
to configure general settings for health monitoring.[web]
to configure the web server.[registry]
for the Netdata registry.[global statistics]
for the Netdata registry.[statsd]
for the general settings of the stats.d.plugin.[plugins]
to configure which collectors to use and PATH settings.[plugin:NAME]
sections for each collector plugin, under the comment Per plugin configuration.
The configuration file is a name = value
dictionary. Netdata will not complain if you set options unknown to it. When
you check the running configuration by accessing the URL /netdata.conf
on your Netdata server, Netdata will add a
comment on settings it does not currently use.
Applying changes
After netdata.conf
has been modified, Netdata needs to be restarted for
changes to apply:
sudo systemctl restart netdata
If the above does not work, try the following:
sudo killall netdata; sleep 10; sudo netdata
Please note that your data history will be lost if you have modified history
parameter in section [global]
.
Sections
[global] section options
setting | default | info |
---|---|---|
process scheduling policy | keep | See Netdata process scheduling policy |
OOM score | 0 | |
glibc malloc arena max for plugins | 1 | See Virtual memory. |
glibc malloc arena max for Netdata | 1 | See Virtual memory. |
hostname | auto-detected | The hostname of the computer running Netdata. |
host access prefix | empty | This is used in docker environments where /proc, /sys, etc have to be accessed via another path. You may also have to set SYS_PTRACE capability on the docker for this work. Check issue 43. |
timezone | auto-detected | The timezone retrieved from the environment variable |
run as user | netdata | The user Netdata will run as. |
pthread stack size | auto-detected |
[db] section options
setting | default | info |
---|---|---|
mode | dbengine | dbengine : The default for long-term metrics storage with efficient RAM and disk usage. Can be extended with dbengine page cache size and dbengine tier X retention size . ram : The round-robin database will be temporary and it will be lost when Netdata exits. alloc : Similar to ram , but can significantly reduce memory usage, when combined with a low retention and does not support KSM. none : Disables the database at this host, and disables health monitoring entirely, as that requires a database of metrics. Not to be used together with streaming. |
retention | 3600 | Used with mode = ram/alloc , not the default mode = dbengine . This number reflects the number of entries the netdata daemon will by default keep in memory for each chart dimension. Check Memory Requirements for more information. |
storage tiers | 3 | The number of storage tiers you want to have in your dbengine. Check the tiering mechanism in the dbengine's reference. You can have up to 5 tiers of data (including the Tier 0). This number ranges between 1 and 5. |
dbengine page cache size | 32MiB | Determines the amount of RAM in MiB that is dedicated to caching for Tier 0 Netdata metric values. |
dbengine tier N retention size | 1GiB | The disk space dedicated to metrics storage, per tier. Can be used in single-node environments as well. N belongs to [1..4] |
dbengine tier N retention time | 14d , 3mo , 1y , 1y , 1y | The database retention, expressed in time. Can be used in single-node environments as well. N belongs to [1..4] |
update every | 1 | The frequency in seconds, for data collection. For more information see the performance guide. These metrics stored as Tier 0 data. Explore the tiering mechanism in the dbengine's reference. |
dbengine tier N update every iterations | 60 | The down sampling value of each tier from the previous one. For each Tier, the greater by one Tier has N (equal to 60 by default) less data points of any metric it collects. This setting can take values from 2 up to 255 . N belongs to [1..4] |
dbengine tier back fill | new | Specifies the strategy of recreating missing data on higher database Tiers.new : Sees the latest point on each Tier and save new points to it only if the exact lower Tier has available points for it's observation window (dbengine tier N update every iterations window). none : No back filling is applied. N belongs to [1..4] |
memory deduplication (ksm) | yes | When set to yes , Netdata will offer its in-memory round robin database and the dbengine page cache to kernel same page merging (KSM) for deduplication. For more information check Memory Deduplication - Kernel Same Page Merging - KSM |
cleanup obsolete charts after | 1h | See monitoring ephemeral containers, also sets the timeout for cleaning up obsolete dimensions |
gap when lost iterations above | 1 | |
cleanup orphan hosts after | 1h | How long to wait until automatically removing from the DB a remote Netdata host (child) that is no longer sending data. |
enable zero metrics | no | Set to yes to show charts when all their metrics are zero. |
Info
The multiplication of all the enabled tiers
dbengine tier N update every iterations
values must be less than65535
.
[directories] section options
setting | default | info |
---|---|---|
config | /etc/netdata | The directory configuration files are kept. |
stock config | /usr/lib/netdata/conf.d | |
log | /var/log/netdata | The directory in which the log files are kept. |
web | /usr/share/netdata/web | The directory the web static files are kept. |
cache | /var/cache/netdata | The directory the memory database will be stored if and when Netdata exits. Netdata will re-read the database when it will start again, to continue from the same point. |
lib | /var/lib/netdata | Contains the alert log and the Netdata instance GUID. |
home | /var/cache/netdata | Contains the db files for the collected metrics. |
lock | /var/lib/netdata/lock | Contains the data collectors lock files. |
plugins | "/usr/libexec/netdata/plugins.d" "/etc/netdata/custom-plugins.d" | The directory plugin programs are kept. This setting supports multiple directories, space separated. If any directory path contains spaces, enclose it in single or double quotes. |
health config | /etc/netdata/health.d | The directory containing the user alert configuration files, to override the stock configurations |
stock health config | /usr/lib/netdata/conf.d/health.d | Contains the stock alert configuration files for each collector |
registry | /opt/netdata/var/lib/netdata/registry | Contains the registry database and GUID that uniquely identifies each Netdata Agent |
[logs] section options
There are additional configuration options for the logs. For more info, see Netdata Logging.
setting | default | info |
---|---|---|
debug flags | 0x0000000000000000 | Bitmap of debug options to enable. For more information check Tracing Options. |
debug | /var/log/netdata/debug.log | The filename to save debug information. This file will not be created if debugging is not enabled. You can also set it to syslog to send the debug messages to syslog, or off to disable this log. For more information check Tracing Options. |
error | /var/log/netdata/error.log | The filename to save error messages for Netdata daemon and all plugins (stderr is sent here for all Netdata programs, including the plugins). You can also set it to syslog to send the errors to syslog, or off to disable this log. |
access | /var/log/netdata/access.log | The filename to save the log of web clients accessing Netdata charts. You can also set it to syslog to send the access log to syslog, or off to disable this log. |
collector | journal | The filename to save the log of Netdata collectors. You can also set it to syslog to send the access log to syslog, or off to disable this log. Defaults to Journal if using systemd. |
health | journal | The filename to save the log of Netdata health collectors. You can also set it to syslog to send the access log to syslog, or off to disable this log. Defaults to Journal if using systemd. |
daemon | journal | The filename to save the log of Netdata daemon. You can also set it to syslog to send the access log to syslog, or off to disable this log. Defaults to Journal if using systemd. |
facility | daemon | A facility keyword is used to specify the type of system that is logging the message. |
logs flood protection period | 1m | Length of period during which the number of errors should not exceed the errors to trigger flood protection . |
logs to trigger flood protection | 1000 | Number of errors written to the log in errors flood protection period sec before flood protection is activated. |
level | info | Controls which log messages are logged, with error being the most important. Supported values: info and error . |
[environment variables] section options
setting | default | info |
---|---|---|
TZ | :/etc/localtime | Where to find the timezone |
PATH | auto-detected | Specifies the directories to be searched to find a command |
PYTHONPATH | Used to set a custom python path |
[sqlite] section options
setting | default | info |
---|---|---|
auto vacuum | INCREMENTAL | The auto-vacuum status in the database |
synchronous | NORMAL | The setting of the "synchronous" flag |
journal mode | WAL | The journal mode for databases |
temp store | MEMORY | Used to determine where temporary tables and indices are stored |
journal size limit | 16777216 | Used to set a new limit in bytes for the database |
cache size | -2000 | Used to suggest the maximum number of database disk pages that SQLite will hold in memory at once per open database file |
[health] section options
This section controls the general behavior of the health monitoring capabilities of Netdata.
Specific alerts are configured in per-collector config files under the health.d
directory. For more info, see health
monitoring.
Alert notifications are configured in health_alarm_notify.conf
.
setting | default | info |
---|---|---|
enabled | yes | Set to no to disable all alerts and notifications |
in memory max health log entries | 1000 | Size of the alert history held in RAM |
script to execute on alarm | /usr/libexec/netdata/plugins.d/alarm-notify.sh | The script that sends alert notifications. Note that in versions before 1.16, the plugins.d directory may be installed in a different location in certain OSs (e.g. under /usr/lib/netdata ). |
run at least every | 10s | Controls how often all alert conditions should be evaluated. |
postpone alarms during hibernation for | 1m | Prevents false alerts. May need to be increased if you get alerts during hibernation. |
health log retention | 5d | Specifies the history of alert events (in seconds) kept in the agent's sqlite database. |
enabled alarms | * | Defines which alerts to load from both user and stock directories. This is a simple pattern list of alert or template names. Can be used to disable specific alerts. For example, enabled alarms = !oom_kill * will load all alerts except oom_kill . |
[web] section options
Refer to the web server documentation
[plugins] section options
In this section you will see be a boolean (yes
/no
) option for each plugin (e.g. tc, cgroups, apps, proc etc.). Note
that the configuration options in this section for the orchestrator plugins python.d
and charts.d
control all the
modules written for that orchestrator. For instance, setting python.d = no
means that all Python modules
under collectors/python.d.plugin
will be disabled.
Additionally, there will be the following options:
setting | default | info |
---|---|---|
enable running new plugins | yes | When set to yes , Netdata will enable detected plugins, even if they are not configured explicitly. Setting this to no will only enable plugins explicitly configured in this file with a yes |
check for new plugins every | 60 | The time in seconds to check for new plugins in the plugins directory. This allows having other applications dynamically creating plugins for Netdata. |
checks | no | This is a debugging plugin for the internal latency |
[registry] section options
To understand what this section is and how it should be configured, please refer to the registry documentation.
Per-plugin configuration
The configuration options for plugins appear in sections following the pattern [plugin:NAME]
.
Internal plugins
Most internal plugins will provide additional options. Check Internal Plugins for more information.
Please note, that by default Netdata will enable monitoring metrics for disks, memory, and network only when they are
not zero. If they are constantly zero they are ignored. Metrics that will start having values, after Netdata is started,
will be detected and charts will be automatically added to the dashboard (a refresh of the dashboard is needed for them
to appear though). Use yes
instead of auto
in plugin configuration sections to enable these charts permanently. You
can also set the enable zero metrics
option to yes
in the [global]
section which enables charts with zero metrics
for all internal Netdata plugins.
External plugins
External plugins will have only 2 options at netdata.conf
:
setting | default | info |
---|---|---|
update every | the value of [global].update every setting | The frequency in seconds the plugin should collect values. For more information check the performance guide. |
command options | - | Additional command line options to pass to the plugin. |
External plugins that need additional configuration may support a dedicated file in /etc/netdata
. Check their
documentation.
Do you have any feedback for this page? If so, you can open a new issue on our netdata/learn repository.