287 lines
8.1 KiB
ReStructuredText
287 lines
8.1 KiB
ReStructuredText
Various
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=======
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.. _tezos-admin-client:
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Admin Client
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------------
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The admin client gives access to more commands to interact with the
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peer-to-peer layer in order to:
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- check the status of the connections
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- force connections to known peers
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- ban/unban peers
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A useful command to debug a node that is not syncing is:
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::
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tezos-admin-client p2p stat
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Use sandboxed mode
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------------------
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To run a ‘localhost-only’ instance of a Tezos network, we provide two
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helper scripts:
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- ``./src/bin_node/tezos-sandboxed-node.sh``
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- ``./src/bin_client/tezos-init-sandboxed-client.sh``
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Run a sandboxed node
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~~~~~~~~~~~~~~~~~~~~
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For instance, if you want to run local network with two nodes, in a
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first terminal, the following command will initialize a node listening
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for peers on port ``19731`` and listening for RPC on port ``18731``.
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::
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./src/bin_node/tezos-sandboxed-node.sh 1 --connections 1
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This node will store its data in a temporary directory
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``/tmp/tezos-node.xxxxxxxx`` which will be removed when the node is
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stopped.
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The option ``--connections`` is just to remove the spurious “Too few
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connections” warnings by lowering the number of expected connection.
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To launch the second node, just run the following command, it will
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listen on port ``19739`` and ``18739``:
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::
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./src/bin_node/tezos-sandboxed-node.sh 9 --connections 1
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You might replace ``1`` or ``9`` by any number in between if you want to
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run more than two nodes.
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Use the sandboxed client
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~~~~~~~~~~~~~~~~~~~~~~~~
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Once your node is running, open a new terminal and initialize the
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“sandboxed” client data in a temporary directory:
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::
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eval `./src/bin_client/tezos-init-sandboxed-client.sh 1`
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It also define in the current shell session an alias ``tezos-client``
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preconfigured for communicating with the same-numbered node.
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When you bootstrap a new network, the network is initialized with a
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dummy economic protocol, called `genesis`. If you want to run the same
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protocol than the alphanet, ``init-sandboxed-client`` also defines an
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alias ``tezos-activate-alpha``, that you need to execute once for
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activating the whole network.
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For instance:
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::
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$ tezos-client rpc get /chains/main/blocks/head/metadata
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"next_protocol": "Ps9mPmXaRzmzk35gbAYNCAw6UXdE2qoABTHbN2oEEc1qM7CwT9P"
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$ tezos-activate-alpha
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Injected BMV9KnSPE1yw
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$ tezos-client rpc get /chains/main/blocks/head/metadata/next_protocol_hash
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"protocol": "Ps9mPmXaRzmzk35gbAYNCAw6UXdE2qoABTHbN2oEEc1qM7CwT9P"
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Tune protocol alpha parameters
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The ``tezos-active-alpha`` alias use parameters from
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``scripts/protocol_parameters.json`` to activate protocol alpha. It can
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be useful to tune these parameters when you need to debug something,
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for example, change the number of blocks per cycle, the time between
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blocks, etc.
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.. _node-conf:
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Configuration options for the node
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----------------------------------
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::
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./tezos-node config init
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This will initialize a configuration file for the node in
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`$HOME/.tezos-node/config.json`, using default values. It only
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specifies that the node will listen to incoming connections on socket
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address ``[::]:9732``.
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The easiest way to amend this default configuration is to use
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::
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# Update the config file
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./tezos-node config update <…>
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# Start from an empty cfg file
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./tezos-node config reset <…>
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All blockchain data is stored under ``$HOME/.tezos-node/``. You can
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change this by doing `./tezos-node config update --data-dir
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</somewhere/in/your/disk>`.
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To run multiple nodes on the same machine, you can duplicate and edit
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``$HOME/.tezos-node/config.json`` while making sure they don't share
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the same ``data-dir``. Then run your node with `./tezos-node
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run --config-file=</path/to/alternate_cfg>`.
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Here is an example configuration file with all parameters specified.
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Most of the time it uses default values, except for cases where the
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default is not explanatory enough (i.e. “bootstrap-peers” is an empty
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list by default). Comments are not allowed in JSON, so this
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configuration file would not parse. They are just provided here to help
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writing your own configuration file if needed.
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::
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{
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/* Location of the data dir on disk. */
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"data-dir": "/home/tezos/my_data_dir"
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/* Configuration of net parameters */
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"net": {
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/* Floating point number between 0 and 256 that represents a
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difficulty, 24 signifies for example that at least 24 leading
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zeroes are expected in the hash. */
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"expected-proof-of-work": 24.5,
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/* List of hosts. Tezos can connect to both IPv6 and IPv4
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hosts. If the port is not specified, default port 9732 will be
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assumed. */
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"bootstrap-peers": ["::1:10732", "::ffff:192.168.1.3:9733", "mynode.tezos.com"],
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/* Specify if the node is in private mode or not. A node in
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private mode only opens outgoing connections to peers whose
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addresses are in [trusted_peers] and only accepts incoming
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connections from trusted peers. In addition, it informs these
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peers that the identity of the node should not be revealed to
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the rest of the network. */
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"private-mode": false,
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/* Network limits */
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"limits": {
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/* Delay granted to a peer to perform authentication, in
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seconds. */
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"authentication-timeout": 5,
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/* Strict minimum number of connections (triggers an urgent
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maintenance). */
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"min-connections": 50,
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/* Targeted number of connections to reach when bootstrapping /
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maintaining. */
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"expected-connections": 100,
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/* Maximum number of connections (exceeding peers are
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disconnected). */
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"max-connections": 200,
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/* Number above which pending incoming connections are
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immediately rejected. */
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"backlog": 20,
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/* Maximum allowed number of incoming connections that are
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pending authentication. */
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"max-incoming-connections": 20,
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/* Max download and upload speeds in KiB/s. */
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"max-download-speed": 1024,
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"max-upload-speed": 1024,
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/* Size of the buffer passed to read(2). */
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"read-buffer-size": 16384,
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}
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},
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/* Configuration of rpc parameters */
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"rpc": {
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/* Host to listen to. If the port is not specified, the default
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port 8732 will be assumed. */
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"listen-addr": "localhost:8733",
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/* Cross Origin Resource Sharing parameters, see
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https://en.wikipedia.org/wiki/Cross-origin_resource_sharing. */
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"cors-origin": [],
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"cors-headers": [],
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/* Certificate and key files (necessary when TLS is used). */
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"crt": "tezos-node.crt",
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"key": "tezos-node.key"
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},
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/* Configuration of log parameters */
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"log": {
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/* Output for the logging function. Either "stdout", "stderr" or
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the name of a log file . */
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"output": "tezos-node.log",
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/* Verbosity level: one of 'fatal', 'error', 'warn', 'notice',
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'info', 'debug'. */
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"level": "info",
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/* Fine-grained logging instructions. Same format as described in
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`tezos-node run --help`, DEBUG section. In the example below,
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sections "net" and all sections starting by "client" will have
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their messages logged up to the debug level, whereas the rest of
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log sections will be logged up to the notice level. */
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"rules": "client* -> debug, net -> debug, * -> notice",
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/* Format for the log file, see
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http://ocsigen.org/lwt/dev/api/Lwt_log_core#2_Logtemplates. */
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"template": "$(date) - $(section): $(message)"
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},
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/* Configuration for the validator and mempool parameters */
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"shell": {
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/* The number of peers to synchronize with
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before declaring the node 'bootstrapped'. */
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"bootstrap_threshold": 4
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}
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}
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Debugging
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---------
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It is possible to set independent log levels for different logging
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sections in Tezos, as well as specifying an output file for logging. See
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the description of log parameters above as well as documentation under
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the DEBUG section displayed by `tezos-node run –-help`.
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