SAIO (Swift All In One)¶
Note
This guide assumes an existing Linux server. A physical machine or VM will work. We recommend configuring it with at least 2GB of memory and 40GB of storage space. We recommend using a VM in order to isolate Swift and its dependencies from other projects you may be working on.
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
CentOS 7
Fedora
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>
.
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; orCreate a group for your username and add yourself to it:
sudo groupadd ${USER} && sudo gpasswd -a ${USER} ${USER} && newgrp ${USER}
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
CentOS
(requires additional repositories):sudo yum update sudo yum install epel-release sudo yum-config-manager --enable epel extras sudo yum install centos-release-openstack-train 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
Fedora
:sudo dnf update sudo dnf install curl gcc memcached rsync-daemon sqlite xfsprogs git-core \ libffi-devel liberasurecode-devel python-pyeclib \ openssl-devel python-setuptools \ python-coverage python-devel python-nose \ python-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.
Configuring storage¶
Swift requires some space on XFS filesystems to store data and run tests.
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:
Note
The disk does not have to be /dev/sdb1
(for example, it could be
/dev/vdb1
) however the mount point should still be /mnt/sdb1
.
Set up a single partition on the device (this will wipe the drive):
sudo parted /dev/sdb mklabel msdos mkpart p xfs 0% 100%
Create an XFS file system on the partition:
sudo mkfs.xfs /dev/sdb1
Find the UUID of the new partition:
sudo blkid
Edit
/etc/fstab
and add:UUID="<UUID-from-output-above>" /mnt/sdb1 xfs noatime 0 0
Create the Swift data mount point and test that mounting works:
sudo mkdir /mnt/sdb1 sudo mount -a
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 -p /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 0 0
Create the Swift data mount point and test that mounting works:
sudo mkdir /mnt/sdb1 sudo mount -a
Common Post-Device Setup¶
Create the individualized data links:
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 sudo mkdir -p /var/run/swift sudo mkdir -p /var/cache/swift /var/cache/swift2 \ /var/cache/swift3 /var/cache/swift4 sudo chown -R ${USER}:${USER} /var/run/swift sudo chown -R ${USER}:${USER} /var/cache/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
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 disk sdb or 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.
Restore appropriate permissions on reboot.
On traditional Linux systems, add the following lines to
/etc/rc.local
(before theexit 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
On CentOS and Fedora we can use systemd (rc.local is deprecated):
cat << EOF |sudo tee /etc/tmpfiles.d/swift.conf d /var/cache/swift 0755 ${USER} ${USER} - - d /var/cache/swift2 0755 ${USER} ${USER} - - d /var/cache/swift3 0755 ${USER} ${USER} - - d /var/cache/swift4 0755 ${USER} ${USER} - - d /var/run/swift 0755 ${USER} ${USER} - - EOF
On OpenSuse place the lines in
/etc/init.d/boot.local
.
Note
On some systems the rc file might need to be an executable shell script.
Creating an XFS tmp dir¶
Tests require having a directory available on an XFS filesystem. By default the
tests use /tmp
, however this can be pointed elsewhere with the TMPDIR
environment variable.
Note
If your root filesystem is XFS, you can skip this section if /tmp
is
just a directory and not a mounted tmpfs. Or you could simply point to any
existing directory owned by your user by specifying it with the TMPDIR
environment variable.
If your root filesystem is not XFS, you should create a loopback device,
format it with XFS and mount it. You can mount it over /tmp
or to
another location and specify it with the TMPDIR
environment variable.
Create the file for the tmp loopback device:
sudo mkdir -p /srv sudo truncate -s 1GB /srv/swift-tmp # create 1GB file for XFS in /srv sudo mkfs.xfs /srv/swift-tmp
To mount the tmp loopback device at
/tmp
, do the following:sudo mount -o loop,noatime /srv/swift-tmp /tmp sudo chmod -R 1777 /tmp
To persist this, edit and add the following to
/etc/fstab
:/srv/swift-tmp /tmp xfs rw,noatime,attr2,inode64,noquota 0 0
To mount the tmp loopback at an alternate location (for example,
/mnt/tmp
), do the following:sudo mkdir -p /mnt/tmp sudo mount -o loop,noatime /srv/swift-tmp /mnt/tmp sudo chown ${USER}:${USER} /mnt/tmp
To persist this, edit and add the following to
/etc/fstab
:/srv/swift-tmp /mnt/tmp xfs rw,noatime,attr2,inode64,noquota 0 0
Set your
TMPDIR
environment dir so that Swift looks in the right location:export TMPDIR=/mnt/tmp echo "export TMPDIR=/mnt/tmp" >> $HOME/.bashrc
Getting the code¶
Check out the python-swiftclient repo:
cd $HOME; git clone https://opendev.org/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 how
libssl.so
is named in OpenSuse vs. other Linux distros the wheel/binary won’t work; thus we use--no-binary cryptography
to buildcryptography
locally.Fedora 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 [account6212] max connections = 25 path = /srv/1/node/ read only = false lock file = /var/lock/account6212.lock [account6222] max connections = 25 path = /srv/2/node/ read only = false lock file = /var/lock/account6222.lock [account6232] max connections = 25 path = /srv/3/node/ read only = false lock file = /var/lock/account6232.lock [account6242] max connections = 25 path = /srv/4/node/ read only = false lock file = /var/lock/account6242.lock [container6211] max connections = 25 path = /srv/1/node/ read only = false lock file = /var/lock/container6211.lock [container6221] max connections = 25 path = /srv/2/node/ read only = false lock file = /var/lock/container6221.lock [container6231] max connections = 25 path = /srv/3/node/ read only = false lock file = /var/lock/container6231.lock [container6241] max connections = 25 path = /srv/4/node/ read only = false lock file = /var/lock/container6241.lock [object6210] max connections = 25 path = /srv/1/node/ read only = false lock file = /var/lock/object6210.lock [object6220] max connections = 25 path = /srv/2/node/ read only = false lock file = /var/lock/object6220.lock [object6230] max connections = 25 path = /srv/3/node/ read only = false lock file = /var/lock/object6230.lock [object6240] max connections = 25 path = /srv/4/node/ read only = false lock file = /var/lock/object6240.lock
Enable rsync daemon
On Ubuntu, edit the following line in
/etc/default/rsync
:RSYNC_ENABLE=true
Note
You might have to create the file to perform the edits.
On CentOS and Fedora, enable the systemd service:
sudo systemctl enable rsyncd
On OpenSuse, nothing needs to happen here.
On platforms with SELinux in
Enforcing
mode, either set toPermissive
:sudo setenforce Permissive sudo sed -i 's/^SELINUX=.*/SELINUX=permissive/g' /etc/selinux/config
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 CentOS, Fedora and OpenSuse, run:
sudo systemctl start rsyncd
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:
account6212 account6222 account6232 account6242 container6211 container6221 container6231 container6241 object6210 object6220 object6230 object6240
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
sudo systemctl start memcached
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¶
Fedora and OpenSuse may not have rsyslog installed, in which case you will need to install it if you want to use individual logging.
Install rsyslogd
On Fedora:
sudo dnf install rsyslog
On OpenSuse:
sudo zypper install rsyslog
Install the Swift rsyslogd configuration:
sudo cp $HOME/swift/doc/saio/rsyslog.d/10-swift.conf /etc/rsyslog.d/
Be sure to review that conf file to determine if you want all the logs in one file vs. all the logs separated out, and if you want hourly logs for stats processing. For convenience, we provide its default contents below:
# Uncomment the following to have a log containing all logs together #local1,local2,local3,local4,local5.* /var/log/swift/all.log # Uncomment the following to have hourly proxy logs for stats processing #$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 CentOS, Fedora and OpenSuse:
sudo chown -R root:adm /var/log/swift sudo chmod -R g+w /var/log/swift sudo systemctl restart rsyslog sudo systemctl enable rsyslog
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 etag-quoter 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_test_tester2 = testing2 .admin user_test_tester3 = testing3 user_test2_tester2 = testing2 .admin [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:etag-quoter] use = egg:swift#etag_quoter enable_by_default = false [filter:gatekeeper] use = egg:swift#gatekeeper [filter:versioned_writes] use = egg:swift#versioned_writes allow_versioned_writes = true allow_object_versioning = true [filter:copy] use = egg:swift#copy [filter:listing_formats] use = egg:swift#listing_formats [filter:domain_remap] use = egg:swift#domain_remap [filter:symlink] use = egg:swift#symlink # To enable, add the s3api middleware to the pipeline before tempauth [filter:s3api] use = egg:swift#s3api s3_acl = yes check_bucket_owner = yes cors_preflight_allow_origin = * # 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 # report_interval = 300 # concurrency is the level of concurrency to 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-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 = 6212 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 = 6211 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/container-reconciler/1.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_LOCAL2 # 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 processes = 4 process = 0 [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/object-server/1.conf
[DEFAULT] devices = /srv/1/node mount_check = false disable_fallocate = true bind_ip = 127.0.0.1 bind_port = 6210 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] [object-relinker]
/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 = 6222 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 = 6221 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/container-reconciler/2.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_LOCAL3 # 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 processes = 4 process = 1 [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/object-server/2.conf
[DEFAULT] devices = /srv/2/node mount_check = false disable_fallocate = true bind_ip = 127.0.0.2 bind_port = 6220 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] [object-relinker]
/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 = 6232 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 = 6231 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/container-reconciler/3.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_LOCAL4 # 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 processes = 4 process = 2 [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/object-server/3.conf
[DEFAULT] devices = /srv/3/node mount_check = false disable_fallocate = true bind_ip = 127.0.0.3 bind_port = 6230 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] [object-relinker]
/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 = 6242 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 = 6241 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/container-reconciler/4.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_LOCAL5 # 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 processes = 4 process = 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/object-server/4.conf
[DEFAULT] devices = /srv/4/node mount_check = false disable_fallocate = true bind_ip = 127.0.0.4 bind_port = 6240 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] [object-relinker]
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
scriptThe template
resetswift
script looks like the following:#!/bin/bash set -e swift-init all kill swift-orphans -a 0 -k 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 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:[s3api_test] # You just enable advanced compatibility features to pass all tests. Add the # following non-default options to the s3api section of your proxy-server.conf # s3_acl = True # check_bucket_owner = True endpoint = http://127.0.0.1:8080 #ca_cert=/path/to/ca.crt region = us-east-1 # First and second users should be account owners access_key1 = test:tester secret_key1 = testing access_key2 = test:tester2 secret_key2 = testing2 # Third user should be unprivileged access_key3 = test:tester3 secret_key3 = testing3 [func_test] # Sample config for Swift with tempauth auth_uri = http://127.0.0.1:8080/auth/v1.0 # 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_uri = http://localhost:5000/v3/ # Used by s3api functional tests, which don't contact auth directly #s3_storage_url = http://127.0.0.1:8080/ #s3_region = us-east-1 # 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 # one swift owner: s3_access_key2 = test:tester2 s3_secret_key2 = testing2 # one unprivileged: s3_access_key3 = test:tester3 s3_secret_key3 = 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 # proxy_base_url = http://localhost:8080 [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
Configure environment variables for Swift¶
Add an environment variable for running tests below:
echo "export SWIFT_TEST_CONFIG_FILE=/etc/swift/test.conf" >> $HOME/.bashrc
Be sure that your
PATH
includes thebin
directory:echo "export PATH=${PATH}:$HOME/bin" >> $HOME/.bashrc
If you are using a loopback device for Swift Storage, add an environment var to substitute
/dev/sdb1
with/srv/swift-disk
:echo "export SAIO_BLOCK_DEVICE=/srv/swift-disk" >> $HOME/.bashrc
If you are using a device other than
/dev/sdb1
for Swift storage (for example,/dev/vdb1
), add an environment var to substitute it:echo "export SAIO_BLOCK_DEVICE=/dev/vdb1" >> $HOME/.bashrc
If you are using a location other than
/tmp
for Swift tmp data (for example,/mnt/tmp
), addTMPDIR
environment var to set it:export TMPDIR=/mnt/tmp echo "export TMPDIR=/mnt/tmp" >> $HOME/.bashrc
Source the above environment variables into your current environment:
. $HOME/.bashrc
Constructing initial rings¶
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 r1z1-127.0.0.1:6210/sdb1 1 swift-ring-builder object.builder add r1z2-127.0.0.2:6220/sdb2 1 swift-ring-builder object.builder add r1z3-127.0.0.3:6230/sdb3 1 swift-ring-builder object.builder add r1z4-127.0.0.4:6240/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 r1z1-127.0.0.1:6210/sdb1 1 swift-ring-builder object-1.builder add r1z2-127.0.0.2:6220/sdb2 1 swift-ring-builder object-1.builder add r1z3-127.0.0.3:6230/sdb3 1 swift-ring-builder object-1.builder add r1z4-127.0.0.4:6240/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 r1z1-127.0.0.1:6210/sdb1 1 swift-ring-builder object-2.builder add r1z1-127.0.0.1:6210/sdb5 1 swift-ring-builder object-2.builder add r1z2-127.0.0.2:6220/sdb2 1 swift-ring-builder object-2.builder add r1z2-127.0.0.2:6220/sdb6 1 swift-ring-builder object-2.builder add r1z3-127.0.0.3:6230/sdb3 1 swift-ring-builder object-2.builder add r1z3-127.0.0.3:6230/sdb7 1 swift-ring-builder object-2.builder add r1z4-127.0.0.4:6240/sdb4 1 swift-ring-builder object-2.builder add r1z4-127.0.0.4:6240/sdb8 1 swift-ring-builder object-2.builder rebalance swift-ring-builder container.builder create 10 3 1 swift-ring-builder container.builder add r1z1-127.0.0.1:6211/sdb1 1 swift-ring-builder container.builder add r1z2-127.0.0.2:6221/sdb2 1 swift-ring-builder container.builder add r1z3-127.0.0.3:6231/sdb3 1 swift-ring-builder container.builder add r1z4-127.0.0.4:6241/sdb4 1 swift-ring-builder container.builder rebalance swift-ring-builder account.builder create 10 3 1 swift-ring-builder account.builder add r1z1-127.0.0.1:6212/sdb1 1 swift-ring-builder account.builder add r1z2-127.0.0.2:6222/sdb2 1 swift-ring-builder account.builder add r1z3-127.0.0.3:6232/sdb3 1 swift-ring-builder account.builder add r1z4-127.0.0.4:6242/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 d0r1z1-127.0.0.1:6210R127.0.0.1:6210/sdb1_"" with 1.0 weight got id 0 Device d1r1z2-127.0.0.2:6220R127.0.0.2:6220/sdb2_"" with 1.0 weight got id 1 Device d2r1z3-127.0.0.3:6230R127.0.0.3:6230/sdb3_"" with 1.0 weight got id 2 Device d3r1z4-127.0.0.4:6240R127.0.0.4:6240/sdb4_"" with 1.0 weight got id 3 Reassigned 3072 (300.00%) partitions. Balance is now 0.00. Dispersion is now 0.00 Device d0r1z1-127.0.0.1:6210R127.0.0.1:6210/sdb1_"" with 1.0 weight got id 0 Device d1r1z2-127.0.0.2:6220R127.0.0.2:6220/sdb2_"" with 1.0 weight got id 1 Device d2r1z3-127.0.0.3:6230R127.0.0.3:6230/sdb3_"" with 1.0 weight got id 2 Device d3r1z4-127.0.0.4:6240R127.0.0.4:6240/sdb4_"" with 1.0 weight got id 3 Reassigned 2048 (200.00%) partitions. Balance is now 0.00. Dispersion is now 0.00 Device d0r1z1-127.0.0.1:6210R127.0.0.1:6210/sdb1_"" with 1.0 weight got id 0 Device d1r1z1-127.0.0.1:6210R127.0.0.1:6210/sdb5_"" with 1.0 weight got id 1 Device d2r1z2-127.0.0.2:6220R127.0.0.2:6220/sdb2_"" with 1.0 weight got id 2 Device d3r1z2-127.0.0.2:6220R127.0.0.2:6220/sdb6_"" with 1.0 weight got id 3 Device d4r1z3-127.0.0.3:6230R127.0.0.3:6230/sdb3_"" with 1.0 weight got id 4 Device d5r1z3-127.0.0.3:6230R127.0.0.3:6230/sdb7_"" with 1.0 weight got id 5 Device d6r1z4-127.0.0.4:6240R127.0.0.4:6240/sdb4_"" with 1.0 weight got id 6 Device d7r1z4-127.0.0.4:6240R127.0.0.4:6240/sdb8_"" with 1.0 weight got id 7 Reassigned 6144 (600.00%) partitions. Balance is now 0.00. Dispersion is now 0.00 Device d0r1z1-127.0.0.1:6211R127.0.0.1:6211/sdb1_"" with 1.0 weight got id 0 Device d1r1z2-127.0.0.2:6221R127.0.0.2:6221/sdb2_"" with 1.0 weight got id 1 Device d2r1z3-127.0.0.3:6231R127.0.0.3:6231/sdb3_"" with 1.0 weight got id 2 Device d3r1z4-127.0.0.4:6241R127.0.0.4:6241/sdb4_"" with 1.0 weight got id 3 Reassigned 3072 (300.00%) partitions. Balance is now 0.00. Dispersion is now 0.00 Device d0r1z1-127.0.0.1:6212R127.0.0.1:6212/sdb1_"" with 1.0 weight got id 0 Device d1r1z2-127.0.0.2:6222R127.0.0.2:6222/sdb2_"" with 1.0 weight got id 1 Device d2r1z3-127.0.0.3:6232R127.0.0.3:6232/sdb3_"" with 1.0 weight got id 2 Device d3r1z4-127.0.0.4:6242R127.0.0.4:6242/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
Testing Swift¶
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
andX-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 fileSWIFT_TEST_CONFIG_FILE
points to, and change the value offake_syslog
toTrue
.If you encounter a
401 Unauthorized
when following Step 12 where you check that you canGET
account, usesudo service memcached status
and check if memcache is running. If memcache is not running, start it usingsudo service memcached start
. Once memcache is running, rerunGET
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.