Cassandra operations

v0.4.8

Deep Cassandra ops via nodetool + cqlsh: topology (status, ring, gossip, describering, failure detector), health (tpstats, netstats, proxy + table histograms, compaction stats + history, throughput), schema introspection, maintenance mutators (snapshot, flush, cleanup, verify, compact, stop, throughput, cache invalidation), repair workflows, node lifecycle (drain, decommission, assassinate, removenode, rebuild), and logging level control. JMX on 127.0.0.1:7199.

34 allowed by default 7 need approval 4 denied by default

Pack ID

cassandra

Vendor

emisar

linux

Actions

Required binaries. Install these on the host before relying on the pack — an action that calls a missing one fails at run time.


              nodetool

Install

emisar pack install validates the pack and verifies its content hash before copying it into /etc/emisar/packs. The --hash below pins the install to the exact bytes on this page — a tampered copy is rejected. After install, reload the runner; it re-reads the catalog and advertises every action.

content hash: sha256:5f04e74317ed58448bf64d9c365dd0e452cb61a28aa22528457d7a0012a945af

on the runner host

sudo emisar pack install cassandra \
  --hash sha256:5f04e74317ed58448bf64d9c365dd0e452cb61a28aa22528457d7a0012a945af \
  --dest /etc/emisar/packs

# Reload so the runner re-reads the catalog:
sudo systemctl reload emisar

Actions 45 total

View on GitHub

cassandra.analyze_disk_pressure script low

Analyze Cassandra disk pressure
cassandra.cqlsh_describe_keyspace exec low

cqlsh -e "DESCRIBE KEYSPACE <ks>"
cassandra.cqlsh_describe_schema exec low

cqlsh -e "DESCRIBE SCHEMA"
cassandra.cqlsh_list_keyspaces exec low

cqlsh -e "DESCRIBE KEYSPACES"
cassandra.cqlsh_list_roles exec low

cqlsh -e "LIST ROLES"
cassandra.cqlsh_system_peers exec low

SELECT * FROM system.peers_v2
cassandra.cqlsh_system_size_estimates exec low

SELECT * FROM system.size_estimates
cassandra.nodetool_assassinate exec critical

nodetool assassinate <address>
cassandra.nodetool_cleanup exec high

nodetool cleanup [ks]
cassandra.nodetool_clearsnapshot exec high

nodetool clearsnapshot -t <name>
cassandra.nodetool_compact exec high

nodetool compact <ks> [table]
cassandra.nodetool_compactionhistory exec low

nodetool compactionhistory
cassandra.nodetool_compactionstats exec low

Cassandra compaction statistics
cassandra.nodetool_decommission exec critical

nodetool decommission
cassandra.nodetool_describecluster exec low

nodetool describecluster
cassandra.nodetool_describering exec low

nodetool describering <keyspace>
cassandra.nodetool_drain exec critical

nodetool drain
cassandra.nodetool_failuredetector exec low

nodetool failuredetector
cassandra.nodetool_flush exec high

nodetool flush [ks] [table]
cassandra.nodetool_getcompactionthroughput exec low

nodetool getcompactionthroughput
cassandra.nodetool_getconcurrentcompactors exec low

nodetool getconcurrentcompactors
cassandra.nodetool_getendpoints exec low

nodetool getendpoints <ks> <table> <key>
cassandra.nodetool_getlogginglevels exec low

nodetool getlogginglevels
cassandra.nodetool_gossipinfo exec low

nodetool gossipinfo
cassandra.nodetool_info exec low

nodetool info
cassandra.nodetool_invalidatecountercache exec medium

nodetool invalidatecountercache
cassandra.nodetool_invalidatekeycache exec medium

nodetool invalidatekeycache
cassandra.nodetool_invalidaterowcache exec medium

nodetool invalidaterowcache
cassandra.nodetool_listsnapshots exec low

nodetool listsnapshots
cassandra.nodetool_netstats exec low

nodetool netstats
cassandra.nodetool_proxyhistograms exec low

nodetool proxyhistograms
cassandra.nodetool_rebuild exec high

nodetool rebuild [source_dc]
cassandra.nodetool_removenode exec critical

nodetool removenode <host-id>
cassandra.nodetool_repair exec high

Cassandra repair
cassandra.nodetool_ring exec low

nodetool ring [keyspace]
cassandra.nodetool_setcompactionthroughput exec medium

nodetool setcompactionthroughput <MB/s>
cassandra.nodetool_setlogginglevel exec medium

nodetool setlogginglevel <logger> <level>
cassandra.nodetool_snapshot exec medium

nodetool snapshot -t <name> [ks]
cassandra.nodetool_status exec low

Cassandra node ring status
cassandra.nodetool_stop_compaction exec high

nodetool stop <operation>
cassandra.nodetool_tablehistograms exec low

nodetool tablehistograms <ks> <table>
cassandra.nodetool_tablestats exec low

Cassandra table stats
cassandra.nodetool_tpstats exec low

Cassandra thread pool stats
cassandra.nodetool_verify exec medium

nodetool verify [ks] [table]
cassandra.nodetool_version exec low

nodetool version

← Back to registry

Pack reference Publish your own →