X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/6eb3d1fb8fe71623fa63da46c250184cf2e4fbb8..6da6b846097364da3abed2abad272e9607b15ca8:/doc/install/install-keepstore.html.textile.liquid?ds=sidebyside diff --git a/doc/install/install-keepstore.html.textile.liquid b/doc/install/install-keepstore.html.textile.liquid index eb537836f5..d6a529d38b 100644 --- a/doc/install/install-keepstore.html.textile.liquid +++ b/doc/install/install-keepstore.html.textile.liquid @@ -3,92 +3,99 @@ layout: default navsection: installguide title: Install Keepstore servers ... +{% comment %} +Copyright (C) The Arvados Authors. All rights reserved. -This installation guide assumes you are on a 64 bit Debian or Ubuntu system. +SPDX-License-Identifier: CC-BY-SA-3.0 +{% endcomment %} -We are going to install two Keepstore servers. By convention, we use the following hostname pattern: +# "Introduction":#introduction +# "Update config.yml":#update-config +# "Install keepstore package":#install-packages +# "Restart the API server and controller":#restart-api +# "Confirm working installation":#confirm-working + +h2. Introduction + +Keepstore provides access to underlying storage for reading and writing content-addressed blocks, with enforcement of Arvados permissions. Keepstore supports a variety of cloud object storage and POSIX filesystems for its backing store. + +h3. Plan your storage layout + +In the steps below, you will configure a number of backend storage volumes (like local filesystems and S3 buckets) and specify which keepstore servers have read-only and read-write access to which volumes. + +It is possible to configure arbitrary server/volume layouts. However, in order to provide good performance and efficient use of storage resources, we strongly recommend using one of the following layouts: + +# Each volume is writable by exactly one server, and optionally readable by one or more other servers. The total capacity of all writable volumes is the same for each server. +# Each volume is writable by all servers. Each volume has enough built-in redundancy to satisfy your requirements, i.e., you do not need Arvados to mirror data across multiple volumes. + +We recommend starting off with two Keepstore servers. Exact server specifications will be site and workload specific, but in general keepstore will be I/O bound and should be set up to maximize aggregate bandwidth with compute nodes. To increase capacity (either space or throughput) it is straightforward to add additional servers, or (in cloud environments) to increase the machine size of the existing servers. + +By convention, we use the following hostname pattern:
~$ echo "deb http://apt.arvados.org/ wheezy main" | sudo tee /etc/apt/sources.list.d/apt.arvados.org.list
-~$ sudo /usr/bin/apt-key adv --keyserver pool.sks-keyservers.net --recv 1078ECD7
-~$ sudo /usr/bin/apt-get update
-~$ sudo /usr/bin/apt-get install keepstore
-
-~$ keepstore -h
-2015/05/08 13:41:16 keepstore starting, pid 2565
-Usage of ./keepstore:
- -blob-signature-ttl=1209600: Lifetime of blob permission signatures. See services/api/config/application.default.yml.
- -blob-signing-key-file="": File containing the secret key for generating and verifying blob permission signatures.
- -data-manager-token-file="": File with the API token used by the Data Manager. All DELETE requests or GET /index requests must carry this token.
- -enforce-permissions=false: Enforce permission signatures on requests.
- -listen=":25107": Listening address, in the form "host:port". e.g., 10.0.1.24:8000. Omit the host part to listen on all interfaces.
- -max-buffers=128: Maximum RAM to use for data buffers, given in multiples of block size (64 MiB). When this limit is reached, HTTP requests requiring buffers (like GET and PUT) will wait for buffer space to be released.
- -never-delete=false: If set, nothing will be deleted. HTTP 405 will be returned for valid DELETE requests.
- -permission-key-file="": Synonym for -blob-signing-key-file.
- -permission-ttl=0: Synonym for -blob-signature-ttl.
- -pid="": Path to write pid file during startup. This file is kept open and locked with LOCK_EX until keepstore exits, so `fuser -k pidfile` is one way to shut down. Exit immediately if there is an error opening, locking, or writing the pid file.
- -readonly=false: Do not write, delete, or touch anything on the following volumes.
- -serialize=false: Serialize read and write operations on the following volumes.
- -volume=[]: Local storage directory. Can be given more than once to add multiple directories. If none are supplied, the default is to use all directories named "keep" that exist in the top level directory of a mount point at startup time. Can be a comma-separated list, but this is deprecated: use multiple -volume arguments instead.
- -volumes=[]: Deprecated synonym for -volume.
+ Services:
+ Keepstore:
+ # No ExternalURL because they are only accessed by the internal subnet.
+ InternalURLs:
+ "http://keep0.ClusterID.example.com:25107/": {}
+ "http://keep1.ClusterID.example.com:25107/": {}
+ # and so forth
~$ keepstore -blob-signing-key-file=./blob-signing-key
-2015/05/08 13:44:26 keepstore starting, pid 2765
-2015/05/08 13:44:26 Using volume [UnixVolume /mnt/keep] (writable=true)
-2015/05/08 13:44:26 listening at :25107
+{% include 'restart_api' %}
-
-+$ echo "hello world!" > hello.txt -Make sure to update the @service_host@ value to match each of your Keepstore servers. +$ arv-put --portable-data-hash hello.txt +2018-07-12 13:35:25 arvados.arv_put[28702] INFO: Creating new cache file at /home/example/.cache/arvados/arv-put/1571ec0adb397c6a18d5c74cc95b3a2a +0M / 0M 100.0% 2018-07-12 13:35:27 arvados.arv_put[28702] INFO: -+h3. Note on storage management +On its own, a keepstore server never deletes data. Instead, the keep-balance service determines which blocks are candidates for deletion and instructs the keepstore to move those blocks to the trash. Please see the "Balancing Keep servers":{{site.baseurl}}/admin/keep-balance.html for more details.- +2018-07-12 13:35:27 arvados.arv_put[28702] INFO: Collection saved as 'Saved at 2018-07-12 17:35:25 UTC by example@example' +59389a8f9ee9d399be35462a0f92541c+53 +$ arv-get 59389a8f9ee9d399be35462a0f92541c+53/hello.txt +hello world! +~$ prefix=`arv --format=uuid user current | cut -d- -f1` -~$ echo "Site prefix is '$prefix'" -~$ read -rd $'\000' keepservice <<EOF; arv keep_service create --keep-service "$keepservice" -{ - "service_host":"keep0.$prefix.your.domain", - "service_port":25107, - "service_ssl_flag":false, - "service_type":"disk" -} -EOF -