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Managed by Monitoring Artist: DevOps / Docker / Kubernetes / AWS ECS / Zabbix / Zenoss / Terraform / Monitoring

Zabbix Server Stress Test

This is basic synthetic stress test. It's more complicated practically, e.g. you have triggers, which need to be evaluated, .... It provides basic picture about performance of your Zabbix server.

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Instructions

1. Agent setup

You will need a few remote agents for monitoring. One agent can provide 5k nvps typically. You need to verify this value before testing. First you need to setup agent to load provided zabbix_module_stress.so module (for RHEL 7, CentOS 7, Ubuntu 14, ...).

Basically you need to setup 2 agent settings:

LoadModulePath=<absolute_path_to_stress_module>/
LoadModule=zabbix_module_stress.so

Restart Zabbix agent and check Zabbix agent log for any module problems (e.g. problem with read permission). See official Zabbix module doc for more information.

Download latest build of zabbix_module_stress.so only for Zabbix 3.0 agents:

Red Hat 7 / CentOS 7 Debian 8 Ubuntu 14
Red Hat 7 CentOS 7 Debian 8 Ubuntu 14

You have to compile module, if the provided binary module doesn't work on your system or you are not using Zabbix 3.0. Basic compilation steps:

# Required CentOS/RHEL apps:   yum install -y wget autoconf automake gcc svn pcre-devel
# Required Debian/Ubuntu apps: apt-get install -y wget autoconf automake gcc subversion make pkg-config libpcre3-dev
# Required Fedora apps:        dnf install -y wget autoconf automake gcc subversion make pcre-devel
# Required openSUSE apps:      zypper install -y wget autoconf automake gcc subversion make pkg-config pcre-devel
# Required Gentoo apps 1:      emerge net-misc/wget sys-devel/autoconf sys-devel/automake sys-devel/gcc
# Required Gentoo apps 2:      emerge dev-vcs/subversion sys-devel/make dev-util/pkgconfig dev-libs/libpcre
# Source, use your version:    svn export svn://svn.zabbix.com/tags/3.2.7 /usr/src/zabbix
cd /usr/src/zabbix
./bootstrap.sh
./configure --enable-agent
mkdir src/modules/zabbix_module_stress
cd src/modules/zabbix_module_stress
wget https://raw.githubusercontent.com/monitoringartist/zabbix-server-stress-test/master/src/modules/zabbix_module_stress/zabbix_module_stress.c
wget https://raw.githubusercontent.com/monitoringartist/zabbix-server-stress-test/master/src/modules/zabbix_module_stress/Makefile
make

Or you can check folder dockerfiles, where Dockerfiles for different OS/Zabbix versions can be customized.

Output will be a binary file (dynamically linked shared object library) zabbix_module_stress.so, which can be loaded by Zabbix agent.

When stress module is loaded, you should execute Zabbix agent stress test to determine how many npvs can be provided by the agent. It varies based on the used HW and network latency and agent config (e.g. StartAgents setting).

$ ./zabbix-agent-stress-test.py -s <remote_agent_ip> -k "stress.ping[]" -t 20
Warning: you are starting more threads, than your system has available CPU cores (8)!
Starting 20 threads, host: remote_agent_ip:10050, key: stress.ping[]
Success: 6077   Errors: 0       Avg rate: 6201.08 qps   Execution time: 1.00 sec
Success: 12825  Errors: 0       Avg rate: 7070.72 qps   Execution time: 2.00 sec
Success: 19712  Errors: 0       Avg rate: 13519.47 qps  Execution time: 3.00 sec
Success: 26441  Errors: 0       Avg rate: 7238.94 qps   Execution time: 4.01 sec
Success: 33281  Errors: 0       Avg rate: 7881.25 qps   Execution time: 5.01 sec
Success: 40119  Errors: 0       Avg rate: 5957.95 qps   Execution time: 6.01 sec
Success: 46933  Errors: 0       Avg rate: 7150.82 qps   Execution time: 7.01 sec
Success: 53755  Errors: 0       Avg rate: 8467.07 qps   Execution time: 8.01 sec
Success: 60620  Errors: 0       Avg rate: 10828.77 qps  Execution time: 9.01 sec
Success: 67403  Errors: 0       Avg rate: 5495.64 qps   Execution time: 10.01 sec
Success: 74280  Errors: 0       Avg rate: 9848.34 qps   Execution time: 11.01 sec
Success: 81112  Errors: 0       Avg rate: 8552.36 qps   Execution time: 12.02 sec
Success: 87859  Errors: 0       Avg rate: 6019.28 qps   Execution time: 13.02 sec
Success: 94707  Errors: 0       Avg rate: 7011.25 qps   Execution time: 14.02 sec
Success: 101561 Errors: 0       Avg rate: 9591.18 qps   Execution time: 15.02 sec
Success: 108420 Errors: 0       Avg rate: 7460.78 qps   Execution time: 16.02 sec
Success: 115348 Errors: 0       Avg rate: 6783.12 qps   Execution time: 17.02 sec
Success: 122293 Errors: 0       Avg rate: 5833.30 qps   Execution time: 18.02 sec
Success: 128981 Errors: 0       Avg rate: 6648.71 qps   Execution time: 19.02 sec
Success: 135696 Errors: 0       Avg rate: 7053.04 qps   Execution time: 20.03 sec
Success: 142320 Errors: 0       Avg rate: 5939.79 qps   Execution time: 21.03 sec
Success: 148962 Errors: 0       Avg rate: 5824.79 qps   Execution time: 22.03 sec
Success: 155639 Errors: 0       Avg rate: 8174.85 qps   Execution time: 23.03 sec
Success: 162433 Errors: 0       Avg rate: 12415.46 qps  Execution time: 24.03 sec
Success: 169191 Errors: 0       Avg rate: 8027.23 qps   Execution time: 25.03 sec
Success: 175772 Errors: 0       Avg rate: 10819.94 qps  Execution time: 26.03 sec
Success: 182565 Errors: 0       Avg rate: 6678.57 qps   Execution time: 27.04 sec
Success: 189289 Errors: 0       Avg rate: 15228.94 qps  Execution time: 28.04 sec
Success: 196026 Errors: 0       Avg rate: 8424.91 qps   Execution time: 29.04 sec
Success: 202789 Errors: 0       Avg rate: 7598.61 qps   Execution time: 30.04 sec
^C
Success: 482513 Errors: 0       Avg rate: 5792.09 qps   Execution time: 20.70 sec
Avg rate based on total execution time and success connections: 6637.30 qps

This agent can provide on avg 6637.30 new values (queries) per second for Zabbix server stress test. Calculate with a lower value, e.g. 5k value to be safe.
Calibrate another agent, so sum of save agent values will be at least equal to required Zabbix server. It means that you will need 10 agents with similar performance with 5k qps for Zabbix server 50k nvps stress test. Don't use Zabbix agent on localhost of your Zabbix server.

2. Prepare performance metrics

Application template for Zabbix server is provided out of the box. Be sure, that template is assigned and data are collected. You will need also OS performance metrics (CPU, mem, HDD, ...), so also OS template (usually OS Linux) should be assigned and metrics should be collected. Database server is usually the bottleneck of Zabbix, so be prepared for detailed DB monitoring. Use proper DB template and especially watch IOPs metrics (iostat -xd 10 10)

Screen for Zabbix performance overview is recommended. Example:

Zabbix server performance screen

3. Import and link provided stress templates

Stress templates contain a huge number of items collected every second - they generate stress. If you have import error "File is too big, max upload size is nnnnn bytes.", then you need to increase the php config upload_max_filesize value - at least 10MB and memory_limit value - at least 512MB (Don't forget to restart your web server). Link stress template to host. Use only hosts/Zabbix agents with configured Zabbix stress module. Wait 10 minutes before linking additional stress template and keep your eyes on Zabbix server performance metrics.

4. Evaluate graphs and bottlenecks

Tune your DB/Zabbix server/Zabbix agent configurations.

5. Unlink and clear data stress templates

Available items

Key Description
stress.ping[<anything>] Return value is always int 1
stress.echo[<message>] Return value is string message from parameter
stress.random[from,to] Return value in defined range, e.g. stress.random[1,1000]

Dockerized version

Visit project https://github.com/monitoringartist/dockbix-agent-xxl

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Devops Monitoring Expert, who loves monitoring systems and cutting/bleeding edge technologies: Docker, Kubernetes, ECS, AWS, Google GCP, Terraform, Lambda, Zabbix, Grafana, Elasticsearch, Kibana, Prometheus, Sysdig,...

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