Put stress on a zeebe node

[ChrisKujawa]

Allow to put different kind of stress on a zeebe node (broker or gateway).

Stress types are CPU, IO and memory. The broker can be identified via nodeId or partitionId and role. For the gateway we choose the first one in the list as on all other commands.

Should replace https://github.com/zeebe-io/zeebe-chaos/blob/main/chaos-workers/chaos-experiments/scripts/stress-cpu.sh

close #238

---

Example:

Stress Broker:

$ ./zbchaos stress broker --cpu --memory --verbose
Connecting to zell-chaos
Running experiment in self-managed environment.
Successfully created port forwarding tunnel
Found Broker zell-chaos-zeebe-0 as LEADER for partition 1.
Put stress on zell-chaos-zeebe-0
Execute ["apt" "-qq" "update"] on pod zell-chaos-zeebe-0
7 packages can be upgraded. Run 'apt list --upgradable' to see them.
Execute ["apt" "-qq" "install" "-y" "stress" "procps"] on pod zell-chaos-zeebe-0
procps is already the newest version (2:3.3.16-1ubuntu2.3).
The following NEW packages will be installed:
  stress
0 upgraded, 1 newly installed, 0 to remove and 7 not upgraded.
Need to get 18.4 kB of archives.
After this operation, 55.3 kB of additional disk space will be used.
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package stress.
(Reading database ... 7621 files and directories currently installed.)
Preparing to unpack .../stress_1.0.4-6_amd64.deb ...
Unpacking stress (1.0.4-6) ...
Setting up stress (1.0.4-6) ...
Execute ["stress" "--timeout" "30" "--cpu" "256" "--vm" "4"] on pod zell-chaos-zeebe-0
stress: info: [405] dispatching hogs: 256 cpu, 0 io, 4 vm, 0 hdd
stress: info: [405] successful run completed in 30s

Stress Gateway:

$ ./zbchaos stress gateway --cpu --verbose
Connecting to zell-chaos
Running experiment in self-managed environment.
Successfully created port forwarding tunnel
Put stress on zell-chaos-zeebe-gateway-58dc88cb5b-jz4lg
Execute ["apt" "-qq" "update"] on pod zell-chaos-zeebe-gateway-58dc88cb5b-jz4lg
7 packages can be upgraded. Run 'apt list --upgradable' to see them.
Execute ["apt" "-qq" "install" "-y" "stress" "procps"] on pod zell-chaos-zeebe-gateway-58dc88cb5b-jz4lg
procps is already the newest version (2:3.3.16-1ubuntu2.3).
The following NEW packages will be installed:
  stress
0 upgraded, 1 newly installed, 0 to remove and 7 not upgraded.
Need to get 18.4 kB of archives.
After this operation, 55.3 kB of additional disk space will be used.
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package stress.
(Reading database ... 7621 files and directories currently installed.)
Preparing to unpack .../stress_1.0.4-6_amd64.deb ...
Unpacking stress (1.0.4-6) ...
Setting up stress (1.0.4-6) ...
Execute ["stress" "--timeout" "30" "--cpu" "256"] on pod zell-chaos-zeebe-gateway-58dc88cb5b-jz4lg
stress: info: [307] dispatching hogs: 256 cpu, 0 io, 0 vm, 0 hdd
stress: info: [307] successful run completed in 30s

Without verbose flag:

$ ./zbchaos stress gateway --cpu
Put stress on zell-chaos-zeebe-gateway-58dc88cb5b-jz4lg

[lenaschoenburg]

Thanks @Zelldon, looks good to me 👍

[lenaschoenburg]

❓ Oh, is this necessary? I thought the root command would parse and set it.

[ChrisKujawa]

I guess no. Probably something we have because we introduced this on the root later. Let me clean up later with the other commands.