chaosctl/

chaosctl

Chaostl is a tool (currently) used to print debug info. Maintainers would make use of it to better provide their suggestions for issues.

How to build

cd $CHAOSMESH_DIR
make chaosctl
./bin/chaosctl --help # to see if build succeeds.

Chaoctl supports shell autocompletion, which could save you some typing. Do ./bin/chaosctl completion -h for detail.

How to use

Debug

chaoctl debug is used to print debug info of certain chaos. Currently, it supports networkchaos, stresschaos and iochaos.

# To print info of each networkchaos
./bin/chaosctl debug networkchaos
# To print info of certain chaos in default namespace
./bin/chaosctl debug networkchaos CHAOSNAME
# To print info of each networkchaos in certain namespace
./bin/chaosctl debug networkchaos -n NAMESPACE

Logs

chaoctl logs is used to easily print log from all chaos-mesh components, including controller-manager, chaos-daemon and chaos-dashboard.

# Default print all log of all chaosmesh components
./bin/chaosctl logs

# To print 100 log lines for chaosmesh components in node NODENAME
./bin/chaosctl logs -t 100 -n NODENAME

Detail of debug

An example output structure of debug would be like:

CHAOSNAME
PODNAME (which the chaos would take effect on)
    DEBUG_INFO
PODNAME
    DEBUG_INFO

The DEBUG_INFO of each supported chaos would be:

​ NetworkChaos:

1. ipset list of chaos daemon
2. tc qdisc list
3. iptables list
4. podnetworkchaos spec

​ StressChaos:

1. ps of target pod
2. cat /proc/${PID}/cgroup of each process
3. cat /proc/${stress-ng_PID}/cgroup
4. the actual cpu/memory limit, compared with the set value

​ IOChaos:

1. cat /proc/mounts of target pod
2. ls -l /proc/${PID}/fd