cassandra-troubleshooting

monitoring

Distributed monitoring accross multiple machine.

Do not require any dependence (read data from /proc/. netstat must be present for networking). Don't require to be root or sudoer.

• cpu
• IO (global)
• IO (write)
• IO (read)
• Network (read)
• Cassandra JVM young generation (ms)
• Cassandra errors and logs

usage: python monitoring.py --big-screen --user=root --key="~/.ssh/id_rsa" --hosts="127.0.0.1,127.0.0.2,127.0.0.3"

extra parameters/configuration: python monitoring.py --help

check-cassandra-config

Check all cassandra configuration files of the cluster and make sure they are all the same. Can be used with any file (change the default files with --files=....)

usage : python check-cassandra-config.py --user=root --key="~/.ssh/id_rsa" --hosts="127.0.0.1,127.0.0.2,127.0.0.3"

require pyyaml to analyse yaml files. pyyaml is included in the yaml folder, download it or install pyyaml (pip install pyyaml) on the machine you launch the script (see http://pyyaml.org/).

If you have/don't want to use pyyaml, add the --no-yaml flag : python check-cassandra-config.py --no-yaml --user=root --key="~/.ssh/id_rsa" --hosts="127.0.0.1,127.0.0.2,127.0.0.3"

extra parameters/configuration: python check-cassandra-config.py --help

check-os-config

Make sure all os have the recommended production settings for cassandra (see https://docs.datastax.com/en/landing_page/doc/landing_page/recommendedSettingsLinux.html)

usage : python check-os-config.py --user=root --key="~/.ssh/id_rsa" --hosts="127.0.0.1,127.0.0.2,127.0.0.3"

extra parameters/configuration: python check-cassandra-config.py --help