Functionality Description

• CeTune is a toolkit/framework to deploy, benchmark, profile and tune *Ceph cluster performance.
• Aim to speed up the procedure of benchmarking *Ceph performance, and provide clear data charts of system metrics, latency breakdown data for users to analyze *Ceph performance.
• CeTune provides test performance through three interfaces: block, file system and object to evaluate *Ceph.

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Maintainance

• CeTune is an opensource project, under LGPL V2.1, Drived by INTEL BDT CSE team.
• Maillist: https://github.com/01org/CeTune
• Subscribe maillist: https://lists.01.org/mailman/listinfo/cephperformance

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Prepare

• one node as CeTune controller(AKA head), Other nodes as CeTune worker(AKA worker).
• Head is able to autossh to all workers include himself, head has a 'hosts' file contains all workers info.
• All nodes are able to connect to yum/apt-get repository and also being able to wget/curl from ceph.com.

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Installation

• Install to head and workers:

head and workers need deploy apt-get,wget,pip proxy.
apt-get install -y python

• Install to head:

git clone https://github.com/01org/CeTune.git

cd /CeTune/deploy/
python controller_dependencies_install.py

# make sure head is able to autossh all worker nodes and 127.0.0.1
cd ${CeTune_PATH}/deploy/prepare-scripts; ./configure_autossh.sh ${host} ${ssh_password}

• Install to workers:

cd /CeTune/deploy/
python worker_dependencies_install.py

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Start CeTune with WebUI

# install webpy python module
cd ${CeTune_PATH}/webui/ 
git clone https://github.com/webpy/webpy.git

cd webpy
python setup.py install

# run CeTune webui
cd ${CeTune_PATH}/webui/
Python webui.py

# you will see below output
root@client01:/CeTune/webui# python webui.py
http://0.0.0.0:8080/

Add user for CeTune

cd /CeTune/visualizer/
# show help
python user_Management.py --help

# add a user
cd /CeTune/visualizer/
python user_Management.py -o add --user_name {set username} --passwd {set passwd} --role {set user role[admin|readonly]}

# delete a user
python user_Management.py -o del --user_name {username}

# list all user
python user_Management.py -o list

# update a user role
python user_Management.py -o up --user_name {username} --role {set user role[admin|readonly]}

• CeTune WebUI

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Configure

• Use WebUI 'Test Configuration' Page, you can specify all the deploy and benchmark required configuration.
• Also users are also able to directly modify conf/all.conf, conf/tuner.yaml, conf/cases.conf to do configuration.
• Configuration helper is both under 'helper' tag, right after 'User Guide' and shows on the configuration page.
• Below is a brief intro of all configuration files' objective:
  • conf/all.conf
    • This is a configuration file to describe cluster, benchmark.
  • conf/tuner.yaml
    • This is a configuration file to tune ceph cluster, including pool configuration, ceph.conf, disk tuning, etc.
  • conf/cases.conf
    • This is a configuration file to decide which test case to run.

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Deploy Ceph

Assume ceph is installed on all nodes, this part is demonstrate the workflow of using CeTune to deploy osd and mon to bring up a healthy ceph cluster.

• Configure nodes info under 'Cluster Configuration'

KEY	VALUE	DESCRIPTION
clean build	true / false	Set true, clean current deployed ceph and redeploy a new cluster; Set false, try obtain current cluster layout, and add new osd to the existing cluster
head	${hostname}	Cetune controller node hostname
user	root	Only support root currently
enable_rgw	true / false	Set true, cetune will also deploy radosgw; Set false, only deploy osd and rbd nodes
list_server	${hostname1},${hostname2},...	List osd nodes here, split by ','
list_client	${hostname1},${hostname2},...	List client(rbd/cosbench worker) nodes here, split by ','
list_mon	${hostname1},${hostname2},...	List mon nodes here, split by ','
${server_name}	${osd_device1}:${journal_device1},${osd_device2}:${journal_device2},...	After adding nodes at 'list_server', cetune will add new lines whose key is the server's name;Add osd:journal pair to corresponding node, split by ','

• Uncheck 'Benchmark' and only check 'Deploy', then click 'Execute'

• WebUI will jump to 'CeTune Status' and you will about to see below console logs

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Benchmark Ceph

• Users are able to configure disk_read_ahead, scheduler, etc at 'system' settings.
• Ceph.conf Tuning can be added to 'Ceph Tuning', so CeTune will runtime apply to ceph cluster.
• 'Benchmark Configuration' is how we control the benchmark process, will give a detail explaination below.
  • There are two parts under 'Benchmark Configuration'.
  • the first table is to control some basic settings like where to store result data, what data will be collected, etc.
  • The second table is to control what testcase will be run, users can add multi testcase, so all the testcases will be run one by one.

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Check Benchmark Results

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User Guidance PDF

CeTune Documents Download Url