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Last pushed: 7 months ago
Short Description
zookeepercli image
Full Description

zookeepercli

Simple, lightweight, dependable CLI for ZooKeeper

zookeepercli is a non-interactive command line client for ZooKeeper. It provides with:

  • Basic CRUD-like operations: create, set, delete (aka rm), exists, get, ls (aka children).
  • Extended operations: lsr (ls recursive), creater (create recursively), deleter (aka rmr, delete recursively)
  • Well formatted and controlled output: supporting either txt or json format
  • Single, no-dependencies binary file, based on a native Go ZooKeeper library
    by github.com/samuel/go-zookeeper (LICENSE)

Download & Install

There are pre built binaries for download.
You can find RPM and deb packages, as well as pre-compiled, dependency free zookeepercli executable binary.
In fact, the only file installed by the pre-built RPM and deb packages is said executable binary file.

Otherwise the source code is freely available; you will need git installed as well as go, and you're on your own.

Usage:

$ zookeepercli --help
Usage of zookeepercli:
  -acls="31": optional, csv list [1|,2|,4|,8|,16|,31]
  -auth_pwd="": optional, digest scheme, pwd
  -auth_usr="": optional, digest scheme, user
  -c="": command (exists|get|ls|lsr|create|creater|set|delete|rm|deleter|rmr|getacl|setacl)
  -debug=false: debug mode (very verbose)
  -force=false: force operation
  -format="txt": output format (txt|json)
  -servers="": srv1[:port1][,srv2[:port2]...]
  -stack=false: add stack trace upon error
  -verbose=false: verbose

Examples:

$ zookeepercli --servers srv-1,srv-2,srv-3 -c create /demo_only some_value

# Default port is 2181. The above is equivalent to:
$ zookeepercli --servers srv-1:2181,srv-2:2181,srv-3:2181 -c create /demo_only some_value

$ zookeepercli --servers srv-1,srv-2,srv-3 --format=txt -c get /demo_only
some_value

# Same as above, JSON format output:
$ zookeepercli --servers srv-1,srv-2,srv-3 --format=json -c get /demo_only
"some_value"

# exists exits with exit code 0 when path exists, 1 when path does not exist 
$ zookeepercli --servers srv-1,srv-2,srv-3 -c exists /demo_only
true

$ zookeepercli --servers srv-1,srv-2,srv-3 -c set /demo_only another_value

$ zookeepercli --servers srv-1,srv-2,srv-3 --format=json -c get /demo_only
"another_value"

$ zookeepercli --servers srv-1,srv-2,srv-3 -c delete /demo_only

$ zookeepercli --servers srv-1,srv-2,srv-3 -c get /demo_only
2014-09-15 04:07:16 FATAL zk: node does not exist

$ zookeepercli --servers srv-1,srv-2,srv-3 -c create /demo_only "path placeholder"
$ zookeepercli --servers srv-1,srv-2,srv-3 -c create /demo_only/key1 "value1"
$ zookeepercli --servers srv-1,srv-2,srv-3 -c create /demo_only/key2 "value2"
$ zookeepercli --servers srv-1,srv-2,srv-3 -c create /demo_only/key3 "value3"

$ zookeepercli --servers srv-1,srv-2,srv-3 -c ls /demo_only
key3
key2
key1

# Same as above, JSON format output:
$ zookeepercli --servers srv-1,srv-2,srv-3 --format=json -c ls /demo_only
["key3","key2","key1"]

$ zookeepercli --servers srv-1,srv-2,srv-3 -c delete /demo_only
2014-09-15 08:26:31 FATAL zk: node has children

$ zookeepercli --servers srv-1,srv-2,srv-3 -c delete /demo_only/key1
$ zookeepercli --servers srv-1,srv-2,srv-3 -c delete /demo_only/key2
$ zookeepercli --servers srv-1,srv-2,srv-3 -c delete /demo_only/key3
$ zookeepercli --servers srv-1,srv-2,srv-3 -c delete /demo_only

# /demo_only path now does not exist.

# Create recursively a path:
$ zookeepercli --servers=srv-1,srv-2,srv-3 -c creater "/demo_only/child/key1" "val1"
$ zookeepercli --servers=srv-1,srv-2,srv-3 -c creater "/demo_only/child/key2" "val2"

# "-c creater" is same as "-c create --force"

$ zookeepercli --servers=srv-1,srv-2,srv-3 -c get "/demo_only/child/key1"
val1

# This path was auto generated due to recursive create:
$ zookeepercli --servers=srv-1,srv-2,srv-3 -c get "/demo_only" 
zookeepercli auto-generated

# ls recursively a path and all sub children:
$ zookeepercli --servers=srv-1,srv-2,srv-3 -c lsr "/demo_only" 
child
child/key1
child/key2

# set value with read and write acl using digest authentication
$ zookeepercli --servers 192.168.59.103 --auth_usr "someuser" --auth_pwd "pass" --acls 1,2 -c create /secret4 value4

# get value using digest authentication
$ zookeepercli --servers 192.168.59.103 --auth_usr "someuser" --auth_pwd "pass" -c get /secret4

# create a value with custom acls
$ zookeepercli --servers 192.168.59.103 -c create /secret5 value5 world:anyone:rw,digest:someuser:hashedpw:crdwa

# view the current acl on a path
$ zookeepercli --servers srv-1,srv-2,srv-3 -c create /demo_acl "some value"
$ zookeepercli --servers srv-1,srv-2,srv-3 -c getacl /demo_acl
world:anyone:cdrwa

# set an acl with world and digest authentication
$ zookeepercli --servers srv-1,srv-2,srv-3 -c setacl /demo_acl "world:anyone:rw,digest:someuser:hashedpw:crdwa"
$ zookeepercli --servers srv-1,srv-2,srv-3 -c getacl /demo_acl
world:anyone:rw
digest:someuser:hashedpw:cdrwa

# set an acl with world and digest authentication creating the node if it doesn't exist
$ zookeepercli --servers srv-1,srv-2,srv-3 -force -c setacl /demo_acl_create "world:anyone:rw,digest:someuser:hashedpw:crdwa"

The tool was built in order to allow with shell scripting seamless integration with ZooKeeper.
There is another, official command line tool for ZooKeeper that the author found inadequate
in terms of output format and output control, as well as large footprint.
zookeepercli overcomes those limitations and provides with quick, well formatted output as well as
enhanced functionality.

Docker

You can also build and run zookeepercli in a Docker container. To build the image:

$ docker build -t zookeepercli .

Now, you can run zookeepercli from a container. Examples:

$ docker run --rm -it zookeepercli --servers $ZK_SERVERS -c create /docker_demo "test value"
$ docker run --rm -it zookeepercli --servers $ZK_SERVERS -c get /docker_demo
test value
$ docker run --rm -it zookeepercli --servers $ZK_SERVERS -c ls /
docker_demo
zookeeper

License

Release under the Apache 2.0 license

Authored by Shlomi Noach at Outbrain

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