文件列表:

INSTALL (1473, 2014-10-13)
Makefile (278, 2014-10-13)
cass_top (36879, 2014-10-13)
cass_top.png (19979, 2014-10-13)
cass_top_help.png (51194, 2014-10-13)
mock_nodetool (67562, 2014-10-13)
mock_nodetool.pl (70804, 2014-10-13)
tests.sh (2831, 2014-10-13)
tests.txt (311, 2014-10-13)

cassandra-top ============= **Summary** The Cassandra top command, cass_top, is a friendly UI for monitoring clusters, similar to the top command, and shows menus to build and run nodetool commands. **Features** cass_top is a wrapper around the Cassandra nodetool command that: - colorizes the nodes by status and updates every few seconds - has interactive option keys for all nodetool commands and options, documented on the help screen - organizes nodetool commands by groups (cluster-wide, node-specific, reporting-only and updating) - populates menus of nodes, keyspaces and column families - builds the nodetool command and displays it for confirmation before running - logs nodetool command start and end time, userid, stdout, stderr and the exit code. **Technical Details** - bash only (no dependencies except nodetool), tested on linux and Mac OS X - no additional firewall holes needed beyond what nodetool requires - minimal output to show multiple Cassandra rings on the same monitor. `usage: cass_top [connection_host=localhost] [keyspace=all] [one-character option=none]` **For Contributors** To run the provided tests with Cassandra nodetool: - `HOST=1.2.3.4 make test` To run the provided tests with mock nodetool (useful for testing without a network, on your notebook or for porting): - `MOCK=1 HOST=1.2.3.4 make test` To run cass_top under the bashdb debugger: - install bashdb and add it to your PATH - do 'ps' to see your shell's pty number (NN) then: - `echo "source /dev/pts/NN" > ~/.bashdbinit` - `MOCK=1 HOST=1.2.3.4 bashdb cass_top` then type 'c' ENTER. There are scripted breakpoints to get you started debugging.  

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