From bfe9f25b49827f02027b5a5e88226ce933e1bd7c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Date: Tue, 8 Oct 2019 17:43:38 +0100 Subject: [PATCH] docs: move docs about remote driver URIs into URI docs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The docs about remote URIs in uri.html are somewhat sparse with the full docs being in remote.html. Move all the URI content from remote.html into uri.html so the user only needs to look in one place for URI info. Reviewed-by: Michal Privoznik Signed-off-by: Daniel P. Berrangé --- docs/remote.html.in | 278 +------------------------------------------- docs/uri.html.in | 265 ++++++++++++++++++++++++++++++++++++----- 2 files changed, 239 insertions(+), 304 deletions(-) diff --git a/docs/remote.html.in b/docs/remote.html.in index 5a0ebe4790..0b0dc87f6f 100644 --- a/docs/remote.html.in +++ b/docs/remote.html.in @@ -34,7 +34,7 @@ the system-wide QEMU daemon on a remote machine called qemu://compute1.libvirt.org/system.

-The section on remote URIs +The section on remote URIs describes in more detail these remote URIs.

@@ -109,279 +109,9 @@ even with graphical management applications. As with the classic ssh transport netcat is required on the remote side.

-The default transport, if no other is specified, is tls. -

-

- Remote URIs -

-

-See also: documentation on ordinary ("local") URIs. -

-

-Remote URIs have the general form ("[...]" meaning an optional part): -

-

driver[+transport]://[username@][hostname][:port]/[path][?extraparameters] -

-

-Either the transport or the hostname must be given in order -to distinguish this from a local URI. -

-

-Some examples: -

-
    -
  • xen+ssh://rjones@towada/system
    — Connect to a -remote Xen hypervisor on host towada using ssh transport and ssh -username rjones. -
    • -
  • xen://towada/system
    — Connect to a -remote Xen hypervisor on host towada using TLS. -
    • -
  • xen://towada/system?no_verify=1
    — Connect to a -remote Xen hypervisor on host towada using TLS. Do not verify -the server's certificate. -
    • -
  • qemu+unix:///system?socket=/opt/libvirt/run/libvirt/libvirt-sock
    — -Connect to the local qemu instances over a non-standard -Unix socket (the full path to the Unix socket is -supplied explicitly in this case). -
    • -
  • test+tcp://localhost:5000/default
    — -Connect to a libvirtd daemon offering unencrypted TCP/IP connections -on localhost port 5000 and use the test driver with default -settings. -
    • -
  • qemu+libssh2://user@host/system?known_hosts=/home/user/.ssh/known_hosts
    — -Connect to a remote host using a ssh connection with the libssh2 driver -and use a different known_hosts file.
    • -
  • qemu+libssh://user@host/system?known_hosts=/home/user/.ssh/known_hosts
    — -Connect to a remote host using a ssh connection with the libssh driver -and use a different known_hosts file.
    • -
-

- Extra parameters -

-

-Extra parameters can be added to remote URIs as part -of the query string (the part following ?). -Remote URIs understand the extra parameters shown below. -Any others are passed unmodified through to the back end. -Note that parameter values must be -URI-escaped. -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Name Transports Meaning
- name - - any transport - - The name passed to the remote virConnectOpen function. The - name is normally formed by removing transport, hostname, port - number, username and extra parameters from the remote URI, but in certain - very complex cases it may be better to supply the name explicitly. -
- Example: name=qemu:///system
- tls_priority - tls - A vaid GNUTLS priority string -
- Example: tls_priority=NORMAL:-VERS-SSL3.0
- mode - unix, ssh, libssh, libssh2 -
-
auto
automatically determine the daemon
-
direct
connect to per-driver daemons
-
legacy
connect to libvirtd
-
- Can also be set in libvirt.conf as remote_mode -
- Example: mode=direct
- command - ssh, ext - The external command. For ext transport this is required. - For ssh the default is ssh. - The PATH is searched for the command. -
- Example: command=/opt/openssh/bin/ssh
- socket - unix, ssh, libssh2, libssh - The path to the Unix domain socket, which overrides the - compiled-in default. For ssh transport, this is passed to - the remote netcat command (see next). -
- Example: socket=/opt/libvirt/run/libvirt/libvirt-sock
- netcat - ssh, libssh2, libssh - The name of the netcat command on the remote machine. - The default is nc. For ssh transport, libvirt - constructs an ssh command which looks like: - -
command -p port [-l username] hostname netcat -U socket
-
- - where port, username, hostname can be - specified as part of the remote URI, and command, netcat - and socket come from extra parameters (or - sensible defaults). - -
- Example: netcat=/opt/netcat/bin/nc
- keyfile - ssh, libssh2, libssh - The name of the private key file to use to authentication to the remote - machine. If this option is not used the default keys are used. -
- Example: keyfile=/root/.ssh/example_key
- no_verify - ssh, tls - SSH: If set to a non-zero value, this disables client's strict host key - checking making it auto-accept new host keys. Existing host keys will - still be validated. -
-
- TLS: If set to a non-zero value, this disables client checks of the - server's certificate. Note that to disable server checks of - the client's certificate or IP address you must - change the libvirtd - configuration. -
- Example: no_verify=1
- no_tty - ssh - If set to a non-zero value, this stops ssh from asking for - a password if it cannot log in to the remote machine automatically - (eg. using ssh-agent etc.). Use this when you don't have access - to a terminal - for example in graphical programs which use libvirt. -
- Example: no_tty=1
- pkipath - tls - Specifies x509 certificates path for the client. If any of - the CA certificate, client certificate, or client key is - missing, the connection will fail with a fatal error. -
- Example: pkipath=/tmp/pki/client
- known_hosts - libssh2, libssh - Path to the known_hosts file to verify the host key against. LibSSH2 and - libssh support OpenSSH-style known_hosts files, although LibSSH2 does not - support all key types, so using files created by the OpenSSH binary may - result into truncating the known_hosts file. Thus, with LibSSH2 it's - recommended to use the default known_hosts file is located in libvirt's - client local configuration directory e.g.: ~/.config/libvirt/known_hosts. - Note: Use absolute paths. -
- Example: known_hosts=/root/.ssh/known_hosts
- sshauth - libssh2, libssh - A comma separated list of authentication methods to use. Default (is - "agent,privkey,password,keyboard-interactive". The order of the methods - is preserved. Some methods may require additional parameters. -
- Example: sshauth=privkey,agent
+ The choice of transport is determined by the URI scheme, + with tls as the default if no explicit transport is requested. +

libvirtd configuration file

diff --git a/docs/uri.html.in b/docs/uri.html.in index 6da9eb9746..49f92773f8 100644 --- a/docs/uri.html.in +++ b/docs/uri.html.in @@ -153,65 +153,270 @@ here. Remote URIs

-Remote URIs are formed by taking ordinary local URIs and adding a -hostname and/or transport name. As a special case, using a URI -scheme of 'remote', will tell the remote libvirtd server to probe -for the optimal hypervisor driver. This is equivalent to passing -a NULL URI for a local connection. For example: +Remote URIs have the general form ("[...]" meaning an optional part): +

+

driver[+transport]://[username@][hostname][:port]/[path][?extraparameters] +

+

+Either the transport or the hostname must be given in order +to distinguish this from a local URI. +

+

+Some examples: +

+
    +
  • xen+ssh://rjones@towada/system
    — Connect to a +remote Xen hypervisor on host towada using ssh transport and ssh +username rjones. +
    • +
  • xen://towada/system
    — Connect to a +remote Xen hypervisor on host towada using TLS. +
    • +
  • xen://towada/system?no_verify=1
    — Connect to a +remote Xen hypervisor on host towada using TLS. Do not verify +the server's certificate. +
    • +
  • qemu+unix:///system?socket=/opt/libvirt/run/libvirt/libvirt-sock
    — +Connect to the local qemu instances over a non-standard +Unix socket (the full path to the Unix socket is +supplied explicitly in this case). +
    • +
  • test+tcp://localhost:5000/default
    — +Connect to a libvirtd daemon offering unencrypted TCP/IP connections +on localhost port 5000 and use the test driver with default +settings. +
    • +
  • qemu+libssh2://user@host/system?known_hosts=/home/user/.ssh/known_hosts
    — +Connect to a remote host using a ssh connection with the libssh2 driver +and use a different known_hosts file.
    • +
  • qemu+libssh://user@host/system?known_hosts=/home/user/.ssh/known_hosts
    — +Connect to a remote host using a ssh connection with the libssh driver +and use a different known_hosts file.
    • +
+

+ Extra parameters +

+

+Extra parameters can be added to remote URIs as part +of the query string (the part following ?). +Remote URIs understand the extra parameters shown below. +Any others are passed unmodified through to the back end. +Note that parameter values must be +URI-escaped.

- - + + - + + + + + - + A vaid GNUTLS priority string + + + + + - + + + + + + + + + + - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Local URI Remote URI Name Transports Meaning
- xen:///system + name - xen://oirase/system + any transport Connect to the Xen hypervisor running on host oirase - using TLS. + The name passed to the remote virConnectOpen function. The + name is normally formed by removing transport, hostname, port + number, username and extra parameters from the remote URI, but in certain + very complex cases it may be better to supply the name explicitly. +
+ Example: name=qemu:///system
- NULL + tls_priority tls - remote://oirase/ - Connect to the "default" hypervisor running on host oirase - using TLS.
+ Example: tls_priority=NORMAL:-VERS-SSL3.0
- xen:///system + mode unix, ssh, libssh, libssh2 - xen+ssh://oirase/system +
+
auto
automatically determine the daemon
+
direct
connect to per-driver daemons
+
legacy
connect to libvirtd
+
+ Can also be set in libvirt.conf as remote_mode 		Connect to the Xen hypervisor running on host oirase - by going over an ssh connection.
+ Example: mode=direct
- test:///default + command ssh, ext - test+tcp://oirase/default + The external command. For ext transport this is required. + For ssh the default is ssh. + The PATH is searched for the command. +
+ Example: command=/opt/openssh/bin/ssh
+ socket Connect to the test driver on host oirase - using an unsecured TCP connection. unix, ssh, libssh2, libssh + The path to the Unix domain socket, which overrides the + compiled-in default. For ssh transport, this is passed to + the remote netcat command (see next). +
+ Example: socket=/opt/libvirt/run/libvirt/libvirt-sock
+ netcat + ssh, libssh2, libssh + The name of the netcat command on the remote machine. + The default is nc. For ssh transport, libvirt + constructs an ssh command which looks like: + +
command -p port [-l username] hostname netcat -U socket
+
+ + where port, username, hostname can be + specified as part of the remote URI, and command, netcat + and socket come from extra parameters (or + sensible defaults). + +
+ Example: netcat=/opt/netcat/bin/nc
+ keyfile + ssh, libssh2, libssh + The name of the private key file to use to authentication to the remote + machine. If this option is not used the default keys are used. +
+ Example: keyfile=/root/.ssh/example_key
+ no_verify + ssh, tls + SSH: If set to a non-zero value, this disables client's strict host key + checking making it auto-accept new host keys. Existing host keys will + still be validated. +
+
+ TLS: If set to a non-zero value, this disables client checks of the + server's certificate. Note that to disable server checks of + the client's certificate or IP address you must + change the libvirtd + configuration. +
+ Example: no_verify=1
+ no_tty + ssh + If set to a non-zero value, this stops ssh from asking for + a password if it cannot log in to the remote machine automatically + (eg. using ssh-agent etc.). Use this when you don't have access + to a terminal - for example in graphical programs which use libvirt. +
+ Example: no_tty=1
+ pkipath + tls + Specifies x509 certificates path for the client. If any of + the CA certificate, client certificate, or client key is + missing, the connection will fail with a fatal error. +
+ Example: pkipath=/tmp/pki/client
+ known_hosts + libssh2, libssh + Path to the known_hosts file to verify the host key against. LibSSH2 and + libssh support OpenSSH-style known_hosts files, although LibSSH2 does not + support all key types, so using files created by the OpenSSH binary may + result into truncating the known_hosts file. Thus, with LibSSH2 it's + recommended to use the default known_hosts file is located in libvirt's + client local configuration directory e.g.: ~/.config/libvirt/known_hosts. + Note: Use absolute paths. +
+ Example: known_hosts=/root/.ssh/known_hosts
+ sshauth + libssh2, libssh + A comma separated list of authentication methods to use. Default (is + "agent,privkey,password,keyboard-interactive". The order of the methods + is preserved. Some methods may require additional parameters. +
+ Example: sshauth=privkey,agent
-

-Remote URIs in libvirt offer a rich syntax and many features. -We refer you to the libvirt -remote URI reference and full documentation -for libvirt remote support. -

test:///... Test URIs