add helper to correctly resolve links

[pve-docs.git] / pveproxy.adoc

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PVE({manvolnum})
================
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NAME
----

pveproxy - PVE API Proxy Daemon


SYNOPSYS
--------

include::pveproxy.8-synopsis.adoc[]

DESCRIPTION
-----------
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{pve} API Proxy Daemon
======================
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This daemon exposes the whole {pve} API on TCP port 8006 using
HTTPS. It runs as user `www-data` and has very limited permissions.
Operation requiring more permissions are forwarded to the local
`pvedaemon`.

Requests targeted for other nodes are automatically forwarded to those
nodes. This means that you can manage your whole cluster by connecting
to a single {pve} node.

Host based Access Control
-------------------------

It is possible to configure ``apache2''-like access control
lists. Values are read from file `/etc/default/pveproxy`. For example:

----
ALLOW_FROM="10.0.0.1-10.0.0.5,192.168.0.0/22"
DENY_FROM="all"
POLICY="allow"
----

IP addresses can be specified using any syntax understood by `Net::IP`. The
name `all` is an alias for `0/0`.

The default policy is `allow`.

[width="100%",options="header"]
|===========================================================
| Match                      | POLICY=deny | POLICY=allow
| Match Allow only           | allow       | allow
| Match Deny only            | deny        | deny
| No match                   | deny        | allow
| Match Both Allow & Deny    | deny        | allow
|===========================================================


SSL Cipher Suite
----------------

You can define the cipher list in `/etc/default/pveproxy`, for example

 CIPHERS="HIGH:MEDIUM:!aNULL:!MD5"

Above is the default. See the ciphers(1) man page from the openssl
package for a list of all available options.


Diffie-Hellman Parameters
-------------------------

You can define the used Diffie-Hellman parameters in
`/etc/default/pveproxy` by setting `DHPARAMS` to the path of a file
containing DH parameters in PEM format, for example

 DHPARAMS="/path/to/dhparams.pem"

If this option is not set, the built-in `skip2048` parameters will be
used.

NOTE: DH parameters are only used if a cipher suite utilizing the DH key
exchange algorithm is negotiated.


Alternative HTTPS certificate
-----------------------------

By default, pveproxy uses the certificate `/etc/pve/local/pve-ssl.pem`
(and private key `/etc/pve/local/pve-ssl.key`) for HTTPS connections.
This certificate is signed by the cluster CA certificate, and therefor
not trusted by browsers and operating systems by default.

In order to use a different certificate and private key for HTTPS,
store the server certificate and any needed intermediate / CA
certificates in PEM format in the file `/etc/pve/local/pveproxy-ssl.pem`
and the associated private key in PEM format without a password in the
file `/etc/pve/local/pveproxy-ssl.key`.

WARNING: Do not replace the automatically generated node certificate
files in `/etc/pve/local/pve-ssl.pem` and `etc/pve/local/pve-ssl.key` or
the cluster CA files in `/etc/pve/pve-root-ca.pem` and
`/etc/pve/priv/pve-root-ca.key`.

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