SAIO - Swift All In One

updated: 2023-01-26 03:11

SAIO - Swift All In One¶

Instructions for setting up a development VM¶

This section documents setting up a virtual machine for doing Swift development. The virtual machine will emulate running a four node Swift cluster. To begin:

Get a linux system server image, this guide will cover:
- Ubuntu 14.04, 16.04 LTS
- Fedora/CentOS
- OpenSuse

Create guest virtual machine from the image.

What’s in a <your-user-name>¶

Much of the configuration described in this guide requires escalated administrator (root) privileges; however, we assume that administrator logs in as an unprivileged user and can use sudo to run privileged commands.

Swift processes also run under a separate user and group, set by configuration option, and referenced as <your-user-name>:<your-group-name>. The default user is swift, which may not exist on your system. These instructions are intended to allow a developer to use his/her username for <your-user-name>:<your-group-name>.

Installing dependencies¶

On apt based systems:

sudo apt-get update
sudo apt-get install curl gcc memcached rsync sqlite3 xfsprogs \
                     git-core libffi-dev python-setuptools \
                     liberasurecode-dev libssl-dev
sudo apt-get install python-coverage python-dev python-nose \
                     python-xattr python-eventlet \
                     python-greenlet python-pastedeploy \
                     python-netifaces python-pip python-dnspython \
                     python-mock

On yum based systems:

sudo yum update
sudo yum install curl gcc memcached rsync sqlite xfsprogs git-core \
                 libffi-devel xinetd liberasurecode-devel \
                 openssl-devel python-setuptools \
                 python-coverage python-devel python-nose \
                 pyxattr python-eventlet \
                 python-greenlet python-paste-deploy \
                 python-netifaces python-pip python-dns \
                 python-mock

On OpenSuse:

sudo zypper install curl gcc memcached rsync sqlite3 xfsprogs git-core \
                    libffi-devel liberasurecode-devel python2-setuptools \
                    libopenssl-devel
sudo zypper install python2-coverage python-devel python2-nose \
                    python-xattr python-eventlet python2-greenlet \
                    python2-netifaces python2-pip python2-dnspython \
                    python2-mock

Note: This installs necessary system dependencies and most of the python dependencies. Later in the process setuptools/distribute or pip will install and/or upgrade packages.

Next, choose either Using a partition for storage or Using a loopback device for storage.

Using a partition for storage¶

If you are going to use a separate partition for Swift data, be sure to add another device when creating the VM, and follow these instructions:

Set up a single partition:
sudo fdisk /dev/sdb
sudo mkfs.xfs /dev/sdb1
Edit /etc/fstab and add:
/dev/sdb1 /mnt/sdb1 xfs noatime,nodiratime,nobarrier,logbufs=8 0 0
Create the mount point and the individualized links:
sudo mkdir /mnt/sdb1
sudo mount /mnt/sdb1
sudo mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4
sudo chown ${USER}:${USER} /mnt/sdb1/*
sudo mkdir /srv
for x in {1..4}; do sudo ln -s /mnt/sdb1/$x /srv/$x; done
sudo mkdir -p /srv/1/node/sdb1 /srv/1/node/sdb5 \
              /srv/2/node/sdb2 /srv/2/node/sdb6 \
              /srv/3/node/sdb3 /srv/3/node/sdb7 \
              /srv/4/node/sdb4 /srv/4/node/sdb8 \
              /var/run/swift
sudo chown -R ${USER}:${USER} /var/run/swift
# **Make sure to include the trailing slash after /srv/$x/**
for x in {1..4}; do sudo chown -R ${USER}:${USER} /srv/$x/; done
Note: For OpenSuse users, a user’s primary group is users, so you have 2 options:
Change ${USER}:${USER} to ${USER}:users in all references of this guide; or
Create a group for your username and add yourself to it:
sudo groupadd ${USER} && sudo gpasswd -a ${USER} ${USER}
Note: We create the mount points and mount the storage disk under /mnt/sdb1. This disk will contain one directory per simulated swift node, each owned by the current swift user.

We then create symlinks to these directories under /srv. If the disk sdb is unmounted, files will not be written under /srv/*, because the symbolic link destination /mnt/sdb1/* will not exist. This prevents disk sync operations from writing to the root partition in the event a drive is unmounted.
Next, skip to Common Post-Device Setup.

Using a loopback device for storage¶

If you want to use a loopback device instead of another partition, follow these instructions:

Create the file for the loopback device:
sudo mkdir /srv
sudo truncate -s 1GB /srv/swift-disk
sudo mkfs.xfs /srv/swift-disk
Modify size specified in the truncate command to make a larger or smaller partition as needed.
Edit /etc/fstab and add:
/srv/swift-disk /mnt/sdb1 xfs loop,noatime,nodiratime,nobarrier,logbufs=8 0 0
Create the mount point and the individualized links:
sudo mkdir /mnt/sdb1
sudo mount /mnt/sdb1
sudo mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4
sudo chown ${USER}:${USER} /mnt/sdb1/*
for x in {1..4}; do sudo ln -s /mnt/sdb1/$x /srv/$x; done
sudo mkdir -p /srv/1/node/sdb1 /srv/1/node/sdb5 \
              /srv/2/node/sdb2 /srv/2/node/sdb6 \
              /srv/3/node/sdb3 /srv/3/node/sdb7 \
              /srv/4/node/sdb4 /srv/4/node/sdb8 \
              /var/run/swift
sudo chown -R ${USER}:${USER} /var/run/swift
# **Make sure to include the trailing slash after /srv/$x/**
for x in {1..4}; do sudo chown -R ${USER}:${USER} /srv/$x/; done
Note: For OpenSuse users, a user’s primary group is users, so you have 2 options:
Change ${USER}:${USER} to ${USER}:users in all references of this guide; or
Create a group for your username and add yourself to it:
sudo groupadd ${USER} && sudo gpasswd -a ${USER} ${USER}
Note: We create the mount points and mount the loopback file under /mnt/sdb1. This file will contain one directory per simulated swift node, each owned by the current swift user.

We then create symlinks to these directories under /srv. If the loopback file is unmounted, files will not be written under /srv/*, because the symbolic link destination /mnt/sdb1/* will not exist. This prevents disk sync operations from writing to the root partition in the event a drive is unmounted.

Common Post-Device Setup¶

Add the following lines to /etc/rc.local (before the exit 0):

mkdir -p /var/cache/swift /var/cache/swift2 /var/cache/swift3 /var/cache/swift4
chown <your-user-name>:<your-group-name> /var/cache/swift*
mkdir -p /var/run/swift
chown <your-user-name>:<your-group-name> /var/run/swift

Note that on some systems you might have to create /etc/rc.local.

On Fedora 19 or later, you need to place these in /etc/rc.d/rc.local.

On OpenSuse you need to place these in /etc/init.d/boot.local.

Creating an XFS tmp dir¶

Tests require having an XFS directory available in /tmp or in the TMPDIR environment variable. To set up /tmp with an XFS filesystem, do the following:

cd ~
truncate -s 1GB xfs_file  # create 1GB fil for XFS in your home directory
mkfs.xfs xfs_file
sudo mount -o loop,noatime,nodiratime xfs_file /tmp
sudo chmod -R 1777 /tmp

To persist this, edit and add the following to /etc/fstab:

/home/<your-user-name>/xfs_file /tmp xfs rw,noatime,nodiratime,attr2,inode64,noquota 0 0

Getting the code¶

Check out the python-swiftclient repo:
cd $HOME; git clone https://github.com/openstack/python-swiftclient.git
Build a development installation of python-swiftclient:
cd $HOME/python-swiftclient; sudo python setup.py develop; cd -
Ubuntu 12.04 users need to install python-swiftclient’s dependencies before the installation of python-swiftclient. This is due to a bug in an older version of setup tools:
cd $HOME/python-swiftclient; sudo pip install -r requirements.txt; sudo python setup.py develop; cd -
Check out the swift repo:
git clone https://github.com/openstack/swift.git
Build a development installation of swift:
cd $HOME/swift; sudo pip install --no-binary cryptography -r requirements.txt; sudo python setup.py develop; cd -
Note: Due to a difference in libssl.so naming in OpenSuse to other Linux distros the wheel/binary wont work so the cryptography must be built, thus the --no-binary cryptography.

Fedora 19 or later users might have to perform the following if development installation of swift fails:
sudo pip install -U xattr
Install swift’s test dependencies:
cd $HOME/swift; sudo pip install -r test-requirements.txt

Setting up rsync¶

Create /etc/rsyncd.conf:

sudo cp $HOME/swift/doc/saio/rsyncd.conf /etc/
sudo sed -i "s/<your-user-name>/${USER}/" /etc/rsyncd.conf

Here is the default rsyncd.conf file contents maintained in the repo that is copied and fixed up above:

uid = <your-user-name>
gid = <your-user-name>
log file = /var/log/rsyncd.log
pid file = /var/run/rsyncd.pid
address = 0.0.0.0

[account6012]
max connections = 25
path = /srv/1/node/
read only = false
lock file = /var/lock/account6012.lock

[account6022]
max connections = 25
path = /srv/2/node/
read only = false
lock file = /var/lock/account6022.lock

[account6032]
max connections = 25
path = /srv/3/node/
read only = false
lock file = /var/lock/account6032.lock

[account6042]
max connections = 25
path = /srv/4/node/
read only = false
lock file = /var/lock/account6042.lock

[container6011]
max connections = 25
path = /srv/1/node/
read only = false
lock file = /var/lock/container6011.lock

[container6021]
max connections = 25
path = /srv/2/node/
read only = false
lock file = /var/lock/container6021.lock

[container6031]
max connections = 25
path = /srv/3/node/
read only = false
lock file = /var/lock/container6031.lock

[container6041]
max connections = 25
path = /srv/4/node/
read only = false
lock file = /var/lock/container6041.lock

[object6010]
max connections = 25
path = /srv/1/node/
read only = false
lock file = /var/lock/object6010.lock

[object6020]
max connections = 25
path = /srv/2/node/
read only = false
lock file = /var/lock/object6020.lock

[object6030]
max connections = 25
path = /srv/3/node/
read only = false
lock file = /var/lock/object6030.lock

[object6040]
max connections = 25
path = /srv/4/node/
read only = false
lock file = /var/lock/object6040.lock

On Ubuntu, edit the following line in /etc/default/rsync:
```
RSYNC_ENABLE=true
```
On Fedora, edit the following line in /etc/xinetd.d/rsync:
```
disable = no
```
One might have to create the above files to perform the edits.

On OpenSuse, nothing needs to happen here.
On platforms with SELinux in Enforcing mode, either set to Permissive:
```
sudo setenforce Permissive
```
Or just allow rsync full access:
```
sudo setsebool -P rsync_full_access 1
```

Start the rsync daemon

On Ubuntu 14.04, run:
```
sudo service rsync restart
```

On Ubuntu 16.04, run:

sudo systemctl enable rsync
sudo systemctl start rsync

On Fedora, run:

sudo systemctl restart xinetd.service
sudo systemctl enable rsyncd.service
sudo systemctl start rsyncd.service

On OpenSuse, run:

sudo systemctl enable rsyncd.service
sudo systemctl start rsyncd.service

On other xinetd based systems simply run:
```
sudo service xinetd restart
```

Verify rsync is accepting connections for all servers:

rsync rsync://pub@localhost/

You should see the following output from the above command:

account6012
account6022
account6032
account6042
container6011
container6021
container6031
container6041
object6010
object6020
object6030
object6040

Starting memcached¶

On non-Ubuntu distros you need to ensure memcached is running:

sudo service memcached start
sudo chkconfig memcached on

or:

sudo systemctl enable memcached.service
sudo systemctl start memcached.service

The tempauth middleware stores tokens in memcached. If memcached is not running, tokens cannot be validated, and accessing Swift becomes impossible.

Optional: Setting up rsyslog for individual logging¶

Install the swift rsyslogd configuration:

sudo cp $HOME/swift/doc/saio/rsyslog.d/10-swift.conf /etc/rsyslog.d/

Note: OpenSuse may have the systemd logger installed, so if you want this to work, you need to install rsyslog:

sudo zypper install rsyslog
sudo systemctl start rsyslog.service
sudo systemctl enable rsyslog.service

Be sure to review that conf file to determine if you want all the logs in one file vs. all the logs separated out, and if you want hourly logs for stats processing. For convenience, we provide its default contents below:

# Uncomment the following to have a log containing all logs together
#local1,local2,local3,local4,local5.*   /var/log/swift/all.log

# Uncomment the following to have hourly proxy logs for stats processing
#$template HourlyProxyLog,"/var/log/swift/hourly/%$YEAR%%$MONTH%%$DAY%%$HOUR%"
#local1.*;local1.!notice ?HourlyProxyLog

local1.*;local1.!notice /var/log/swift/proxy.log
local1.notice           /var/log/swift/proxy.error
local1.*                ~

local2.*;local2.!notice /var/log/swift/storage1.log
local2.notice           /var/log/swift/storage1.error
local2.*                ~

local3.*;local3.!notice /var/log/swift/storage2.log
local3.notice           /var/log/swift/storage2.error
local3.*                ~

local4.*;local4.!notice /var/log/swift/storage3.log
local4.notice           /var/log/swift/storage3.error
local4.*                ~

local5.*;local5.!notice /var/log/swift/storage4.log
local5.notice           /var/log/swift/storage4.error
local5.*                ~

local6.*;local6.!notice /var/log/swift/expirer.log
local6.notice           /var/log/swift/expirer.error
local6.*                ~

Edit /etc/rsyslog.conf and make the following change (usually in the “GLOBAL DIRECTIVES” section):
```
$PrivDropToGroup adm
```

If using hourly logs (see above) perform:

sudo mkdir -p /var/log/swift/hourly

Otherwise perform:

sudo mkdir -p /var/log/swift

Setup the logging directory and start syslog:

On Ubuntu:

sudo chown -R syslog.adm /var/log/swift
sudo chmod -R g+w /var/log/swift
sudo service rsyslog restart

On Fedora and OpenSuse:

sudo chown -R root:adm /var/log/swift
sudo chmod -R g+w /var/log/swift
sudo systemctl restart rsyslog.service

Configuring each node¶

After performing the following steps, be sure to verify that Swift has access to resulting configuration files (sample configuration files are provided with all defaults in line-by-line comments).

Optionally remove an existing swift directory:
sudo rm -rf /etc/swift
Populate the /etc/swift directory itself:
cd $HOME/swift/doc; sudo cp -r saio/swift /etc/swift; cd -
sudo chown -R ${USER}:${USER} /etc/swift
Update <your-user-name> references in the Swift config files:
find /etc/swift/ -name \*.conf | xargs sudo sed -i "s/<your-user-name>/${USER}/"

The contents of the configuration files provided by executing the above commands are as follows:

/etc/swift/swift.conf

[swift-hash]
# random unique strings that can never change (DO NOT LOSE)
# Use only printable chars (python -c "import string; print(string.printable)")
swift_hash_path_prefix = changeme
swift_hash_path_suffix = changeme

[storage-policy:0]
name = gold
policy_type = replication
default = yes

[storage-policy:1]
name = silver
policy_type = replication

[storage-policy:2]
name = ec42
policy_type = erasure_coding
ec_type = liberasurecode_rs_vand
ec_num_data_fragments = 4
ec_num_parity_fragments = 2

/etc/swift/proxy-server.conf

[DEFAULT]
bind_ip = 127.0.0.1
bind_port = 8080
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL1
eventlet_debug = true

[pipeline:main]
# Yes, proxy-logging appears twice. This is so that
# middleware-originated requests get logged too.
pipeline = catch_errors gatekeeper healthcheck proxy-logging cache listing_formats bulk tempurl ratelimit crossdomain container_sync tempauth staticweb copy container-quotas account-quotas slo dlo versioned_writes symlink proxy-logging proxy-server

[filter:catch_errors]
use = egg:swift#catch_errors

[filter:healthcheck]
use = egg:swift#healthcheck

[filter:proxy-logging]
use = egg:swift#proxy_logging

[filter:bulk]
use = egg:swift#bulk

[filter:ratelimit]
use = egg:swift#ratelimit

[filter:crossdomain]
use = egg:swift#crossdomain

[filter:dlo]
use = egg:swift#dlo

[filter:slo]
use = egg:swift#slo

[filter:container_sync]
use = egg:swift#container_sync
current = //saio/saio_endpoint

[filter:tempurl]
use = egg:swift#tempurl

[filter:tempauth]
use = egg:swift#tempauth
user_admin_admin = admin .admin .reseller_admin
user_test_tester = testing .admin
user_test2_tester2 = testing2 .admin
user_test_tester3 = testing3

[filter:staticweb]
use = egg:swift#staticweb

[filter:account-quotas]
use = egg:swift#account_quotas

[filter:container-quotas]
use = egg:swift#container_quotas

[filter:cache]
use = egg:swift#memcache

[filter:gatekeeper]
use = egg:swift#gatekeeper

[filter:versioned_writes]
use = egg:swift#versioned_writes
allow_versioned_writes = true

[filter:copy]
use = egg:swift#copy

[filter:listing_formats]
use = egg:swift#listing_formats

[filter:symlink]
use = egg:swift#symlink

# To enable, add the s3api middleware to the pipeline before tempauth
[filter:s3api]
use = egg:swift#s3api

# Example to create root secret: `openssl rand -base64 32`
[filter:keymaster]
use = egg:swift#keymaster
encryption_root_secret = changeme/changeme/changeme/changeme/change/=

# To enable use of encryption add both middlewares to pipeline, example:
# <other middleware> keymaster encryption proxy-logging proxy-server
[filter:encryption]
use = egg:swift#encryption

[app:proxy-server]
use = egg:swift#proxy
allow_account_management = true
account_autocreate = true

/etc/swift/object-expirer.conf

[DEFAULT]
# swift_dir = /etc/swift
user = <your-user-name>
# You can specify default log routing here if you want:
log_name = object-expirer
log_facility = LOG_LOCAL6
log_level = INFO
#log_address = /dev/log
#
# comma separated list of functions to call to setup custom log handlers.
# functions get passed: conf, name, log_to_console, log_route, fmt, logger,
# adapted_logger
# log_custom_handlers =
#
# If set, log_udp_host will override log_address
# log_udp_host =
# log_udp_port = 514
#
# You can enable StatsD logging here:
# log_statsd_host =
# log_statsd_port = 8125
# log_statsd_default_sample_rate = 1.0
# log_statsd_sample_rate_factor = 1.0
# log_statsd_metric_prefix =

[object-expirer]
interval = 300
# auto_create_account_prefix = .
# report_interval = 300
# concurrency is the level of concurrency o use to do the work, this value
# must be set to at least 1
# concurrency = 1
# processes is how many parts to divide the work into, one part per process
#   that will be doing the work
# processes set 0 means that a single process will be doing all the work
# processes can also be specified on the command line and will override the
#   config value
# processes = 0
# process is which of the parts a particular process will work on
# process can also be specified on the command line and will override the config
#   value
# process is "zero based", if you want to use 3 processes, you should run
#  processes with process set to 0, 1, and 2
# process = 0

[pipeline:main]
pipeline = catch_errors cache proxy-server

[app:proxy-server]
use = egg:swift#proxy
# See proxy-server.conf-sample for options

[filter:cache]
use = egg:swift#memcache
# See proxy-server.conf-sample for options

[filter:catch_errors]
use = egg:swift#catch_errors
# See proxy-server.conf-sample for options

/etc/swift/container-reconciler.conf

[DEFAULT]
# swift_dir = /etc/swift
user = <your-user-name>
# You can specify default log routing here if you want:
# log_name = swift
# log_facility = LOG_LOCAL0
# log_level = INFO
# log_address = /dev/log
#
# comma separated list of functions to call to setup custom log handlers.
# functions get passed: conf, name, log_to_console, log_route, fmt, logger,
# adapted_logger
# log_custom_handlers =
#
# If set, log_udp_host will override log_address
# log_udp_host =
# log_udp_port = 514
#
# You can enable StatsD logging here:
# log_statsd_host =
# log_statsd_port = 8125
# log_statsd_default_sample_rate = 1.0
# log_statsd_sample_rate_factor = 1.0
# log_statsd_metric_prefix =

[container-reconciler]
# reclaim_age = 604800
# interval = 300
# request_tries = 3

[pipeline:main]
pipeline = catch_errors proxy-logging cache proxy-server

[app:proxy-server]
use = egg:swift#proxy
# See proxy-server.conf-sample for options

[filter:cache]
use = egg:swift#memcache
# See proxy-server.conf-sample for options

[filter:proxy-logging]
use = egg:swift#proxy_logging

[filter:catch_errors]
use = egg:swift#catch_errors
# See proxy-server.conf-sample for options

/etc/swift/container-sync-realms.conf

[saio]
key = changeme
key2 = changeme
cluster_saio_endpoint = http://127.0.0.1:8080/v1/

/etc/swift/account-server/1.conf

[DEFAULT]
devices = /srv/1/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.1
bind_port = 6012
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL2
recon_cache_path = /var/cache/swift
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon account-server

[app:account-server]
use = egg:swift#account

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[account-replicator]
rsync_module = {replication_ip}::account{replication_port}

[account-auditor]

[account-reaper]

/etc/swift/container-server/1.conf

[DEFAULT]
devices = /srv/1/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.1
bind_port = 6011
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL2
recon_cache_path = /var/cache/swift
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon container-server

[app:container-server]
use = egg:swift#container

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[container-replicator]
rsync_module = {replication_ip}::container{replication_port}

[container-updater]

[container-auditor]

[container-sync]

[container-sharder]
auto_shard = true
rsync_module = {replication_ip}::container{replication_port}
# This is intentionally much smaller than the default of 1,000,000 so tests
# can run in a reasonable amount of time
shard_container_threshold = 100
# The probe tests make explicit assumptions about the batch sizes
shard_scanner_batch_size = 10
cleave_batch_size = 2

/etc/swift/object-server/1.conf

[DEFAULT]
devices = /srv/1/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.1
bind_port = 6010
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL2
recon_cache_path = /var/cache/swift
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon object-server

[app:object-server]
use = egg:swift#object

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[object-replicator]
rsync_module = {replication_ip}::object{replication_port}

[object-reconstructor]

[object-updater]

[object-auditor]

/etc/swift/account-server/2.conf

[DEFAULT]
devices = /srv/2/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.2
bind_port = 6022
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL3
recon_cache_path = /var/cache/swift2
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon account-server

[app:account-server]
use = egg:swift#account

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[account-replicator]
rsync_module = {replication_ip}::account{replication_port}

[account-auditor]

[account-reaper]

/etc/swift/container-server/2.conf

[DEFAULT]
devices = /srv/2/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.2
bind_port = 6021
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL3
recon_cache_path = /var/cache/swift2
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon container-server

[app:container-server]
use = egg:swift#container

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[container-replicator]
rsync_module = {replication_ip}::container{replication_port}

[container-updater]

[container-auditor]

[container-sync]

[container-sharder]
auto_shard = true
rsync_module = {replication_ip}::container{replication_port}
# This is intentionally much smaller than the default of 1,000,000 so tests
# can run in a reasonable amount of time
shard_container_threshold = 100
# The probe tests make explicit assumptions about the batch sizes
shard_scanner_batch_size = 10
cleave_batch_size = 2

/etc/swift/object-server/2.conf

[DEFAULT]
devices = /srv/2/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.2
bind_port = 6020
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL3
recon_cache_path = /var/cache/swift2
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon object-server

[app:object-server]
use = egg:swift#object

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[object-replicator]
rsync_module = {replication_ip}::object{replication_port}

[object-reconstructor]

[object-updater]

[object-auditor]

/etc/swift/account-server/3.conf

[DEFAULT]
devices = /srv/3/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.3
bind_port = 6032
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL4
recon_cache_path = /var/cache/swift3
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon account-server

[app:account-server]
use = egg:swift#account

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[account-replicator]
rsync_module = {replication_ip}::account{replication_port}

[account-auditor]

[account-reaper]

/etc/swift/container-server/3.conf

[DEFAULT]
devices = /srv/3/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.3
bind_port = 6031
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL4
recon_cache_path = /var/cache/swift3
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon container-server

[app:container-server]
use = egg:swift#container

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[container-replicator]
rsync_module = {replication_ip}::container{replication_port}

[container-updater]

[container-auditor]

[container-sync]

[container-sharder]
auto_shard = true
rsync_module = {replication_ip}::container{replication_port}
# This is intentionally much smaller than the default of 1,000,000 so tests
# can run in a reasonable amount of time
shard_container_threshold = 100
# The probe tests make explicit assumptions about the batch sizes
shard_scanner_batch_size = 10
cleave_batch_size = 2

/etc/swift/object-server/3.conf

[DEFAULT]
devices = /srv/3/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.3
bind_port = 6030
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL4
recon_cache_path = /var/cache/swift3
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon object-server

[app:object-server]
use = egg:swift#object

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[object-replicator]
rsync_module = {replication_ip}::object{replication_port}

[object-reconstructor]

[object-updater]

[object-auditor]

/etc/swift/account-server/4.conf

[DEFAULT]
devices = /srv/4/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.4
bind_port = 6042
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL5
recon_cache_path = /var/cache/swift4
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon account-server

[app:account-server]
use = egg:swift#account

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[account-replicator]
rsync_module = {replication_ip}::account{replication_port}

[account-auditor]

[account-reaper]

/etc/swift/container-server/4.conf

[DEFAULT]
devices = /srv/4/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.4
bind_port = 6041
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL5
recon_cache_path = /var/cache/swift4
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon container-server

[app:container-server]
use = egg:swift#container

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[container-replicator]
rsync_module = {replication_ip}::container{replication_port}

[container-updater]

[container-auditor]

[container-sync]

[container-sharder]
auto_shard = true
rsync_module = {replication_ip}::container{replication_port}
# This is intentionally much smaller than the default of 1,000,000 so tests
# can run in a reasonable amount of time
shard_container_threshold = 100
# The probe tests make explicit assumptions about the batch sizes
shard_scanner_batch_size = 10
cleave_batch_size = 2

/etc/swift/object-server/4.conf

[DEFAULT]
devices = /srv/4/node
mount_check = false
disable_fallocate = true
bind_ip = 127.0.0.4
bind_port = 6040
workers = 1
user = <your-user-name>
log_facility = LOG_LOCAL5
recon_cache_path = /var/cache/swift4
eventlet_debug = true

[pipeline:main]
pipeline = healthcheck recon object-server

[app:object-server]
use = egg:swift#object

[filter:recon]
use = egg:swift#recon

[filter:healthcheck]
use = egg:swift#healthcheck

[object-replicator]
rsync_module = {replication_ip}::object{replication_port}

[object-reconstructor]

[object-updater]

[object-auditor]

Setting up scripts for running Swift¶

Copy the SAIO scripts for resetting the environment:

mkdir -p $HOME/bin
cd $HOME/swift/doc; cp saio/bin/* $HOME/bin; cd -
chmod +x $HOME/bin/*

Edit the $HOME/bin/resetswift script

The template resetswift script looks like the following:

#!/bin/bash

set -e

swift-init all kill
# Remove the following line if you did not set up rsyslog for individual logging:
sudo find /var/log/swift -type f -exec rm -f {} \;
if cut -d' ' -f2 /proc/mounts | grep -q /mnt/sdb1 ; then
    sudo umount /mnt/sdb1
fi
# If you are using a loopback device set SAIO_BLOCK_DEVICE to "/srv/swift-disk"
sudo mkfs.xfs -f ${SAIO_BLOCK_DEVICE:-/dev/sdb1}
sudo mount /mnt/sdb1
sudo mkdir /mnt/sdb1/1 /mnt/sdb1/2 /mnt/sdb1/3 /mnt/sdb1/4
sudo chown ${USER}:${USER} /mnt/sdb1/*
mkdir -p /srv/1/node/sdb1 /srv/1/node/sdb5 \
         /srv/2/node/sdb2 /srv/2/node/sdb6 \
         /srv/3/node/sdb3 /srv/3/node/sdb7 \
         /srv/4/node/sdb4 /srv/4/node/sdb8
sudo rm -f /var/log/debug /var/log/messages /var/log/rsyncd.log /var/log/syslog
find /var/cache/swift* -type f -name *.recon -exec rm -f {} \;
if [ "`type -t systemctl`" == "file" ]; then
    sudo systemctl restart rsyslog
    sudo systemctl restart memcached
else
    sudo service rsyslog restart
    sudo service memcached restart
fi

If you are using a loopback device add an environment var to substitute /dev/sdb1 with /srv/swift-disk:

echo "export SAIO_BLOCK_DEVICE=/srv/swift-disk" >> $HOME/.bashrc

If you did not set up rsyslog for individual logging, remove the find /var/log/swift... line:

sed -i "/find \/var\/log\/swift/d" $HOME/bin/resetswift

Install the sample configuration file for running tests:

cp $HOME/swift/test/sample.conf /etc/swift/test.conf

The template test.conf looks like the following:

[func_test]
# Sample config for Swift with tempauth
auth_host = 127.0.0.1
auth_port = 8080
auth_ssl = no
auth_prefix = /auth/
# Sample config for Swift with Keystone v2 API.
# For keystone v2 change auth_version to 2 and auth_prefix to /v2.0/.
# And "allow_account_management" should not be set "true".
#auth_version = 3
#auth_host = localhost
#auth_port = 5000
#auth_ssl = no
#auth_prefix = /v3/

# Primary functional test account (needs admin access to the account)
account = test
username = tester
password = testing
s3_access_key = test:tester
s3_secret_key = testing

# User on a second account (needs admin access to the account)
account2 = test2
username2 = tester2
password2 = testing2

# User on same account as first, but without admin access
username3 = tester3
password3 = testing3
# s3api requires the same account with the primary one and different users
s3_access_key2 = test:tester3
s3_secret_key2 = testing3

# Fourth user is required for keystone v3 specific tests.
# Account must be in a non-default domain.
#account4 = test4
#username4 = tester4
#password4 = testing4
#domain4 = test-domain

# Fifth user is required for service token-specific tests.
# The account must be different from the primary test account.
# The user must not have a group (tempauth) or role (keystoneauth) on
# the primary test account. The user must have a group/role that is unique
# and not given to the primary tester and is specified in the options
# <prefix>_require_group (tempauth) or <prefix>_service_roles (keystoneauth).
#account5 = test5
#username5 = tester5
#password5 = testing5

# The service_prefix option is used for service token-specific tests.
# If service_prefix or username5 above is not supplied, the tests are skipped.
# To set the value and enable the service token tests, look at the
# reseller_prefix option in /etc/swift/proxy-server.conf. There must be at
# least two prefixes. If not, add a prefix as follows (where we add SERVICE):
#     reseller_prefix = AUTH, SERVICE
# The service_prefix must match the <prefix> used in <prefix>_require_group
# (tempauth) or <prefix>_service_roles (keystoneauth); for example:
#    SERVICE_require_group = service
#    SERVICE_service_roles = service
# Note: Do not enable service token tests if the first prefix in
# reseller_prefix is the empty prefix AND the primary functional test
# account contains an underscore.
#service_prefix = SERVICE

# Sixth user is required for access control tests.
# Account must have a role for reseller_admin_role(keystoneauth).
#account6 = test
#username6 = tester6
#password6 = testing6

collate = C

# Only necessary if a pre-existing server uses self-signed certificate
insecure = no

# Tests that are dependent on domain_remap middleware being installed also
# require one of the domain_remap storage_domain values to be specified here,
# otherwise those tests will be skipped.
storage_domain =

[unit_test]
fake_syslog = False

[probe_test]
# check_server_timeout = 30
# validate_rsync = false

[swift-constraints]
# The functional test runner will try to use the constraint values provided in
# the swift-constraints section of test.conf.
#
# If a constraint value does not exist in that section, or because the
# swift-constraints section does not exist, the constraints values found in
# the /info API call (if successful) will be used.
#
# If a constraint value cannot be found in the /info results, either because
# the /info API call failed, or a value is not present, the constraint value
# used will fall back to those loaded by the constraints module at time of
# import (which will attempt to load /etc/swift/swift.conf, see the
# swift.common.constraints module for more information).
#
# Note that the cluster must have "sane" values for the test suite to pass
# (for some definition of sane).
#
#max_file_size = 5368709122
#max_meta_name_length = 128
#max_meta_value_length = 256
#max_meta_count = 90
#max_meta_overall_size = 4096
#max_header_size = 8192
#extra_header_count = 0
#max_object_name_length = 1024
#container_listing_limit = 10000
#account_listing_limit = 10000
#max_account_name_length = 256
#max_container_name_length = 256

# Newer swift versions default to strict cors mode, but older ones were the
# opposite.
#strict_cors_mode = true

Add an environment variable for running tests below:

echo "export SWIFT_TEST_CONFIG_FILE=/etc/swift/test.conf" >> $HOME/.bashrc

Be sure that your PATH includes the bin directory:

echo "export PATH=${PATH}:$HOME/bin" >> $HOME/.bashrc

Source the above environment variables into your current environment:
```
. $HOME/.bashrc
```

Construct the initial rings using the provided script:

remakerings

The remakerings script looks like the following:

#!/bin/bash

set -e

cd /etc/swift

rm -f *.builder *.ring.gz backups/*.builder backups/*.ring.gz

swift-ring-builder object.builder create 10 3 1
swift-ring-builder object.builder add r1z1-127.0.0.1:6010/sdb1 1
swift-ring-builder object.builder add r1z2-127.0.0.2:6020/sdb2 1
swift-ring-builder object.builder add r1z3-127.0.0.3:6030/sdb3 1
swift-ring-builder object.builder add r1z4-127.0.0.4:6040/sdb4 1
swift-ring-builder object.builder rebalance
swift-ring-builder object-1.builder create 10 2 1
swift-ring-builder object-1.builder add r1z1-127.0.0.1:6010/sdb1 1
swift-ring-builder object-1.builder add r1z2-127.0.0.2:6020/sdb2 1
swift-ring-builder object-1.builder add r1z3-127.0.0.3:6030/sdb3 1
swift-ring-builder object-1.builder add r1z4-127.0.0.4:6040/sdb4 1
swift-ring-builder object-1.builder rebalance
swift-ring-builder object-2.builder create 10 6 1
swift-ring-builder object-2.builder add r1z1-127.0.0.1:6010/sdb1 1
swift-ring-builder object-2.builder add r1z1-127.0.0.1:6010/sdb5 1
swift-ring-builder object-2.builder add r1z2-127.0.0.2:6020/sdb2 1
swift-ring-builder object-2.builder add r1z2-127.0.0.2:6020/sdb6 1
swift-ring-builder object-2.builder add r1z3-127.0.0.3:6030/sdb3 1
swift-ring-builder object-2.builder add r1z3-127.0.0.3:6030/sdb7 1
swift-ring-builder object-2.builder add r1z4-127.0.0.4:6040/sdb4 1
swift-ring-builder object-2.builder add r1z4-127.0.0.4:6040/sdb8 1
swift-ring-builder object-2.builder rebalance
swift-ring-builder container.builder create 10 3 1
swift-ring-builder container.builder add r1z1-127.0.0.1:6011/sdb1 1
swift-ring-builder container.builder add r1z2-127.0.0.2:6021/sdb2 1
swift-ring-builder container.builder add r1z3-127.0.0.3:6031/sdb3 1
swift-ring-builder container.builder add r1z4-127.0.0.4:6041/sdb4 1
swift-ring-builder container.builder rebalance
swift-ring-builder account.builder create 10 3 1
swift-ring-builder account.builder add r1z1-127.0.0.1:6012/sdb1 1
swift-ring-builder account.builder add r1z2-127.0.0.2:6022/sdb2 1
swift-ring-builder account.builder add r1z3-127.0.0.3:6032/sdb3 1
swift-ring-builder account.builder add r1z4-127.0.0.4:6042/sdb4 1
swift-ring-builder account.builder rebalance

You can expect the output from this command to produce the following. Note that 3 object rings are created in order to test storage policies and EC in the SAIO environment. The EC ring is the only one with all 8 devices. There are also two replication rings, one for 3x replication and another for 2x replication, but those rings only use 4 devices:

Device d0r1z1-127.0.0.1:6010R127.0.0.1:6010/sdb1_"" with 1.0 weight got id 0
Device d1r1z2-127.0.0.2:6020R127.0.0.2:6020/sdb2_"" with 1.0 weight got id 1
Device d2r1z3-127.0.0.3:6030R127.0.0.3:6030/sdb3_"" with 1.0 weight got id 2
Device d3r1z4-127.0.0.4:6040R127.0.0.4:6040/sdb4_"" with 1.0 weight got id 3
Reassigned 3072 (300.00%) partitions. Balance is now 0.00.  Dispersion is now 0.00
Device d0r1z1-127.0.0.1:6010R127.0.0.1:6010/sdb1_"" with 1.0 weight got id 0
Device d1r1z2-127.0.0.2:6020R127.0.0.2:6020/sdb2_"" with 1.0 weight got id 1
Device d2r1z3-127.0.0.3:6030R127.0.0.3:6030/sdb3_"" with 1.0 weight got id 2
Device d3r1z4-127.0.0.4:6040R127.0.0.4:6040/sdb4_"" with 1.0 weight got id 3
Reassigned 2048 (200.00%) partitions. Balance is now 0.00.  Dispersion is now 0.00
Device d0r1z1-127.0.0.1:6010R127.0.0.1:6010/sdb1_"" with 1.0 weight got id 0
Device d1r1z1-127.0.0.1:6010R127.0.0.1:6010/sdb5_"" with 1.0 weight got id 1
Device d2r1z2-127.0.0.2:6020R127.0.0.2:6020/sdb2_"" with 1.0 weight got id 2
Device d3r1z2-127.0.0.2:6020R127.0.0.2:6020/sdb6_"" with 1.0 weight got id 3
Device d4r1z3-127.0.0.3:6030R127.0.0.3:6030/sdb3_"" with 1.0 weight got id 4
Device d5r1z3-127.0.0.3:6030R127.0.0.3:6030/sdb7_"" with 1.0 weight got id 5
Device d6r1z4-127.0.0.4:6040R127.0.0.4:6040/sdb4_"" with 1.0 weight got id 6
Device d7r1z4-127.0.0.4:6040R127.0.0.4:6040/sdb8_"" with 1.0 weight got id 7
Reassigned 6144 (600.00%) partitions. Balance is now 0.00.  Dispersion is now 0.00
Device d0r1z1-127.0.0.1:6011R127.0.0.1:6011/sdb1_"" with 1.0 weight got id 0
Device d1r1z2-127.0.0.2:6021R127.0.0.2:6021/sdb2_"" with 1.0 weight got id 1
Device d2r1z3-127.0.0.3:6031R127.0.0.3:6031/sdb3_"" with 1.0 weight got id 2
Device d3r1z4-127.0.0.4:6041R127.0.0.4:6041/sdb4_"" with 1.0 weight got id 3
Reassigned 3072 (300.00%) partitions. Balance is now 0.00.  Dispersion is now 0.00
Device d0r1z1-127.0.0.1:6012R127.0.0.1:6012/sdb1_"" with 1.0 weight got id 0
Device d1r1z2-127.0.0.2:6022R127.0.0.2:6022/sdb2_"" with 1.0 weight got id 1
Device d2r1z3-127.0.0.3:6032R127.0.0.3:6032/sdb3_"" with 1.0 weight got id 2
Device d3r1z4-127.0.0.4:6042R127.0.0.4:6042/sdb4_"" with 1.0 weight got id 3
Reassigned 3072 (300.00%) partitions. Balance is now 0.00.  Dispersion is now 0.00

Read more about Storage Policies and your SAIO Adding Storage Policies to an Existing SAIO
Verify the unit tests run:
```
$HOME/swift/.unittests
```
Note that the unit tests do not require any swift daemons running.
Start the “main” Swift daemon processes (proxy, account, container, and object):
```
startmain
```
(The “Unable to increase file descriptor limit. Running as non-root?” warnings are expected and ok.)

The startmain script looks like the following:
#!/bin/bash set -e swift-init main start

Get an X-Storage-Url and X-Auth-Token:

curl -v -H 'X-Storage-User: test:tester' -H 'X-Storage-Pass: testing' http://127.0.0.1:8080/auth/v1.0

Check that you can GET account:

curl -v -H 'X-Auth-Token: <token-from-x-auth-token-above>' <url-from-x-storage-url-above>

Check that swift command provided by the python-swiftclient package works:

swift -A http://127.0.0.1:8080/auth/v1.0 -U test:tester -K testing stat

Verify the functional tests run:
```
$HOME/swift/.functests
```
(Note: functional tests will first delete everything in the configured accounts.)
Verify the probe tests run:
```
$HOME/swift/.probetests
```
(Note: probe tests will reset your environment as they call resetswift for each test.)

Debugging Issues¶

If all doesn’t go as planned, and tests fail, or you can’t auth, or something doesn’t work, here are some good starting places to look for issues:

Everything is logged using system facilities – usually in /var/log/syslog, but possibly in /var/log/messages on e.g. Fedora – so that is a good first place to look for errors (most likely python tracebacks).
Make sure all of the server processes are running. For the base functionality, the Proxy, Account, Container, and Object servers should be running.
If one of the servers are not running, and no errors are logged to syslog, it may be useful to try to start the server manually, for example: swift-object-server /etc/swift/object-server/1.conf will start the object server. If there are problems not showing up in syslog, then you will likely see the traceback on startup.
If you need to, you can turn off syslog for unit tests. This can be useful for environments where /dev/log is unavailable, or which cannot rate limit (unit tests generate a lot of logs very quickly). Open the file SWIFT_TEST_CONFIG_FILE points to, and change the value of fake_syslog to True.
If you encounter a 401 Unauthorized when following Step 12 where you check that you can GET account, use sudo service memcached status and check if memcache is running. If memcache is not running, start it using sudo service memcached start. Once memcache is running, rerun GET account.

Known Issues¶

Listed here are some “gotcha’s” that you may run into when using or testing your SAIO:

fallocate_reserve - in most cases a SAIO doesn’t have a very large XFS partition so having fallocate enabled and fallocate_reserve set can cause issues, specifically when trying to run the functional tests. For this reason fallocate has been turned off on the object-servers in the SAIO. If you want to play with the fallocate_reserve settings then know that functional tests will fail unless you change the max_file_size constraint to something more reasonable then the default (5G). Ideally you’d make it 1/4 of your XFS file system size so the tests can pass.

updated: 2023-01-26 03:11

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