102 lines
4.4 KiB
ReStructuredText
102 lines
4.4 KiB
ReStructuredText
.. _sysadmin_traffic_control:
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Traffic Control
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---------------
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.. image:: images/screenshots/pbs-gui-traffic-control-add.png
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:align: right
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:alt: Add a traffic control limit
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Creating and restoring backups can produce lots of traffic and impact other
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users of the network or shared storages.
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Proxmox Backup Server allows to limit network traffic for clients within
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specified networks using a token bucket filter (TBF).
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This allows you to avoid network congestion or to prioritize traffic from
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certain hosts.
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You can manage the traffic controls either over the web-interface or using the
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``traffic-control`` commandos of the ``proxmox-backup-manager`` command-line
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tool.
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.. note:: Sync jobs on the server are not affected by its rate-in limits. If
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you want to limit the incomming traffic that a pull-based sync job
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generates, you need to setup a job-specific rate-in limit. See
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:ref:`syncjobs`.
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The following command adds a traffic control rule to limit all IPv4 clients
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(network ``0.0.0.0/0``) to 100 MB/s:
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.. code-block:: console
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# proxmox-backup-manager traffic-control create rule0 --network 0.0.0.0/0 \
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--rate-in 100MB --rate-out 100MB \
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--comment "Default rate limit (100MB/s) for all clients"
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.. note:: To limit both IPv4 and IPv6 network spaces you need to pass two
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network parameters ``::/0`` and ``0.0.0.0/0``.
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It is possible to restrict rules to certain time frames, for example the
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company office hours:
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.. tip:: You can use SI (base 10: KB, MB, ...) or IEC (base 2: KiB, MiB, ...)
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units.
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.. code-block:: console
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# proxmox-backup-manager traffic-control update rule0 \
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--timeframe "mon..fri 8-12" \
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--timeframe "mon..fri 14:30-18"
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If there are more rules, the server uses the rule with the smaller network. For
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example, we can overwrite the setting for our private network (and the server
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itself) with:
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.. code-block:: console
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# proxmox-backup-manager traffic-control create rule1 \
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--network 192.168.2.0/24 \
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--network 127.0.0.0/8 \
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--rate-in 20GB --rate-out 20GB \
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--comment "Use 20GB/s for the local network"
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.. note:: The behavior is undefined if there are several rules for the same network.
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If there are multiple rules that match the same network all of them will be
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applied, which means that the smallest one wins, as it's bucket fills up the
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fastest.
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To list the current rules use:
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.. code-block:: console
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# proxmox-backup-manager traffic-control list
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┌───────┬─────────────┬─────────────┬─────────────────────────┬────────────...─┐
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│ name │ rate-in │ rate-out │ network │ timeframe ... │
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╞═══════╪═════════════╪═════════════╪═════════════════════════╪════════════...═╡
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│ rule0 │ 100 MB │ 100 MB │ ["0.0.0.0/0"] │ ["mon..fri ... │
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├───────┼─────────────┼─────────────┼─────────────────────────┼────────────...─┤
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│ rule1 │ 20 GB │ 20 GB │ ["192.168.2.0/24", ...] │ ... │
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└───────┴─────────────┴─────────────┴─────────────────────────┴────────────...─┘
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Rules can also be removed:
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.. code-block:: console
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# proxmox-backup-manager traffic-control remove rule1
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To show the state (current data rate) of all configured rules use:
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.. code-block:: console
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# proxmox-backup-manager traffic-control traffic
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┌───────┬─────────────┬──────────────┐
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│ name │ cur-rate-in │ cur-rate-out │
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╞═══════╪═════════════╪══════════════╡
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│ rule0 │ 0 B │ 0 B │
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├───────┼─────────────┼──────────────┤
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│ rule1 │ 1.161 GiB │ 19.146 KiB │
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└───────┴─────────────┴──────────────┘
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