skywalking-cli

README

Apache SkyWalking CLI

The CLI (Command Line Interface) for Apache SkyWalking.

SkyWalking CLI is a command interaction tool for the SkyWalking user or OPS team, as an alternative besides using browser GUI. It is based on SkyWalking GraphQL query protocol, same as GUI.

Install

As SkyWalking CLI is using Makefile, compiling the project is as easy as executing a command in the root directory of the project.

git clone https://github.com/apache/skywalking-cli
cd skywalking-cli
make

and copy the ./bin/swctl-latest-(darwin|linux|windows)-amd64 to your PATH directory according to your OS, usually /usr/bin/ or /usr/local/bin, or you can copy it to any directory you like, and add that directory to PATH, we recommend you to rename the swctl-latest-(darwin|linux|windows)-amd64 to swctl.

Commands

Commands in SkyWalking CLI are organized into two levels, in the form of swctl --option <level1> --option <level2> --option, there're options in each level, which should follow right after the corresponding command, take the following command as example:

$ swctl --debug service list --start="2019-11-11" --end="2019-11-12"

where --debug is is an option of swctl, and since the swctl is a top-level command, --debug is also called global option, and --start is an option of the third level command list, there is no option for the second level command service.

Generally, the second level commands are entity related, there're entities like service, service instance, metrics in SkyWalking, and we have corresponding sub-command like service; the third level commands are operations on the entities, such as list command will list all the services, service instances, etc.

Common options

There're some common options that are shared by multiple commands, and they follow the same rules in different commands,

--start, --end

--start and --end specify a time range during which the query is preformed, they are both optional and their default values follow the rules below:

• when start and end are both absent, start = now - 30 minutes and end = now, namely past 30 minutes;
• when start and end are both present, they are aligned to the same precision by truncating the more precise one, e.g. if start = 2019-01-01 1234, end = 2019-01-01 18, then start is truncated (because it's more precise) to 2019-01-01 12, and end = 2019-01-01 18;
• when start is absent and end is present, will determine the precision of end and then use the precision to calculate start (minus 30 units), e.g. end = 2019-11-09 1234, the precision is MINUTE, so start = end - 30 minutes = 2019-11-09 1204, and if end = 2019-11-09 12, the precision is HOUR, so start = end - 30HOUR = 2019-11-08 06;
• when start is present and end is absent, will determine the precision of start and then use the precision to calculate end (plus 30 units), e.g. start = 2019-11-09 1204, the precision is MINUTE, so end = start + 30 minutes = 2019-11-09 1234, and if start = 2019-11-08 06, the precision is HOUR, so end = start + 30HOUR = 2019-11-09 12;

All available commands

This section covers all the available commands in SkyWalking CLI and their usages.

swctl

swctl is the top-level command, which has some options that will take effects globally.

option	description	default
--config	from where the default options values will be loaded	~/.skywalking.yml
--debug	enable debug mode, will print more detailed information at runtime	false
--base-url	base url of GraphQL backend	http://127.0.0.1:12800/graphql
--display	display style when printing the query result, supported styles are: json, yaml, table	json

service

service list [--start=start-time] [--end=end-time]

service list lists all the services in the time range of [start, end].

option	description	default
--start	See Common options	See Common options
--end	See Common options	See Common options

instance

instance list [--start=start-time] [--end=end-time] [--service-id=service-id] [--service-name=service-name]

instance list lists all the instances in the time range of [start, end] and given --service-id or --service-name.

option	description	default
--service-id	Query by service id (priority over --service-name)
--service-name	Query by service name if --service-id is absent
--start	See Common options	See Common options
--end	See Common options	See Common options

instance search [--start=start-time] [--end=end-time] [--regex=instance-name-regex] [--service-id=service-id] [--service-name=service-name]

instance search filter the instance in the time range of [start, end] and given --regex --service-id or --service-name.

option	description	default
--regex	Query regex of instance name
--service-id	Query by service id (priority over --service-name)
--service-name	Query by service name if service-id is absent
--start	See Common options	See Common options
--end	See Common options	See Common options

endpoint

endpoint list [--start=start-time] [--end=end-time] --service-id=service-id [--limit=count] [--keyword=search-keyword]

endpoint list lists all the endpoints of the given service id in the time range of [start, end].

option	description	default
--service-id	whose endpoints are to be searched
--limit	returns at most endpoints (default: 100)	100
--keyword	of the endpoint name to search for, empty to search all	""

linear-metrics

linear-metrics [--start=start-time] [--end=end-time] --name=metrics-name [--id=entity-id]

option	description	default
--name	Metrics name, defined in OAL, such as all_p99, etc.
--id	the related id if the metrics requires one, e.g. for metrics service_p99, the service id is required, use --id to specify the service id, the same for instance, endpoint, etc.
--start	See Common options	See Common options
--end	See Common options	See Common options

single-metrics

single-metrics [--start=start-time] [--end=end-time] --name=metrics-name [--ids=entity-ids]

option	description	default
--name	Metrics name, defined in OAL, such as service_sla, etc.
--ids	IDs that are required by the metric type, such as service IDs for service_sla
--start	See Common options	See Common options
--end	See Common options	See Common options

Use Cases

Query a specific service by name

# query the service named projectC
$ ./bin/swctl service ls projectC
[{"id":"4","name":"projectC"}]

Query instances of a specific service

If you have already got the id of the service:

$ ./bin/swctl instance ls --service-id=3
[{"id":"3","name":"projectD-pid:7909@skywalking-server-0001","attributes":[{"name":"os_name","value":"Linux"},{"name":"host_name","value":"skywalking-server-0001"},{"name":"process_no","value":"7909"},{"name":"ipv4s","value":"192.168.252.12"}],"language":"JAVA","instanceUUID":"ec8a79d7cb58447c978ee85846f6699a"}]

otherwise,

$ ./bin/swctl instance ls --service-name=projectC
[{"id":"3","name":"projectD-pid:7909@skywalking-server-0001","attributes":[{"name":"os_name","value":"Linux"},{"name":"host_name","value":"skywalking-server-0001"},{"name":"process_no","value":"7909"},{"name":"ipv4s","value":"192.168.252.12"}],"language":"JAVA","instanceUUID":"ec8a79d7cb58447c978ee85846f6699a"}]

Query endpoints of a specific service

If you have already got the id of the service:

$ ./bin/swctl endpoint ls --service-id=3

otherwise,

./bin/swctl service ls projectC | jq '.[].id' | xargs ./bin/swctl-latest-darwin-amd64 endpoint ls --service-id 
[{"id":"22","name":"/projectC/{value}"}]

Query a linear metrics graph for an instance

If you have already got the id of the instance:

$ ./bin/swctl --display=graph linear-metrics --name=service_instance_resp_time --id 5
┌─────────────────────────────────────────────────────────────────────────────────Press q to quit──────────────────────────────────────────────────────────────────────────────────┐
│                                                                                                                                                                                  │
│                                                                                                                                                                                  │
│         │                                                                                                                                                    ⡜⠢⡀                 │
│  1181.80│                                      ⡰⡀                                                         ⢀⡠⢢         ⡰⢣                                    ⡰⠁ ⠈⠢⡀               │
│         │                                     ⢠⠃⠱⡀              ⡀                                       ⢀⠔⠁  ⠱⡀     ⢀⠜  ⢣                        ⢀⠞⡄       ⢠⠃    ⠈⠢⡀             │
│         │                                     ⡎  ⠱⡀          ⢀⠔⠊⠱⡀                 ⢀⣀⣀⣀              ⢀⡠⠊⠁     ⠘⢄   ⢀⠎    ⢣                      ⡠⠃ ⠘⡄      ⡎       ⠈⠑⠢⢄⡀  ⢀⡠⠔⠊⠁  │
│         │          ⢀⠤⣀⡀       ⢀⡀             ⡸    ⢣        ⡠⠔⠁   ⠱⡀            ⡠⠊⠉⠉⠁   ⠉⠉⠒⠒⠤⠤⣀⣀⣀ ⢀⡠⠔⠊⠁          ⠣⡀⡠⠃      ⢣           ⢀⠔⠤⡀     ⡰⠁   ⠘⡄    ⡜            ⠈⠑⠊⠁      │
│  1043.41│⡀       ⢀⠔⠁  ⠈⠑⠒⠤⠔⠒⠊⠉⠁⠈⠒⢄          ⢀⠇     ⢣    ⢀⠤⠊       ⠱⡀         ⢀⠔⠁                ⠉⠁               ⠑⠁        ⢣         ⡠⠃  ⠈⠒⢄ ⢀⠜      ⠘⡄  ⢰⠁                      │
│         │⠈⠑⠤⣀   ⡠⠊                ⠑⠤⡀       ⡜       ⢣ ⣀⠔⠁          ⠱⡀       ⡰⠁                                              ⠣⢄⣀    ⢠⠊       ⠉⠊        ⠘⡄⢠⠃                       │
│         │    ⠑⠢⠊                    ⠈⠢⡀    ⢰⠁        ⠋              ⠱⡀  ⣀⠤⠔⠊                                                   ⠉⠒⠢⠔⠁                   ⠘⠎                        │
│         │                             ⠈⠢⡀ ⢀⠇                         ⠑⠊⠉                                                                                                         │
│      905│                               ⠈⠢⡜                                                                                                                                      │
│         └──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────  │
│          2019-12-02 2121   2019-12-02 2107   2019-12-02 2115   2019-12-02 2119   2019-12-02 2137   2019-12-02 2126   2019-12-02 2118   2019-12-02 2128   2019-12-02 2136         │
│                                                                                                                                                                                  │
│                                                                                                                                                                                  │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘

otherwise

$ ./bin/swctl instance ls --service-name=projectC | jq '.[] | select(.name == "projectC-pid:7895@skywalking-server-0001").id' | xargs ./bin/swctl --display=graph linear-metrics --name=service_instance_resp_time --id
┌─────────────────────────────────────────────────────────────────────────────────Press q to quit──────────────────────────────────────────────────────────────────────────────────┐
│                                                                                                                                                                                  │
│                                                                                                                                                                                  │
│         │                                                                           ⡠⠒⢣                                                                                          │
│  1181.80│                          ⡠⠊⢢                                           ⣀⠔⠉   ⢣              ⡔⡄                               ⡔⡄                                        │
│         │           ⣀            ⡠⠊   ⠑⡄                                    ⣀⡠⠔⠒⠉       ⢣            ⡜ ⠈⢆                            ⢀⠎ ⠈⢢              ⡀                        │
│         │          ⡜ ⠉⠒⠤⣀   ⢀⣀⣀⡠⠊      ⠈⠢⡀               ⢀⡠⢄⣀⡀            ⡰⠉             ⢣          ⡜    ⢣                          ⡠⠃    ⠑⡄        ⢀⡠⠔⠉⠘⢄                       │
│         │        ⢀⠜      ⠉⠉⠉⠁            ⠑⢄          ⢀⡠⠔⠊⠁   ⠈⠉⠑⢢        ⡰⠁               ⢣       ⢀⠎      ⠱⡀          ⢀⠦⡀         ⢀⠜       ⠈⢢ ⢀⣀⣀⡠⠤⠒⠁     ⠣⡀                  ⡀  │
│  1043.41│       ⢀⠎                         ⠑⢄      ⢀⠔⠁           ⠱⡀     ⡰⠁                 ⢣⣀    ⢀⠎        ⠘⢄        ⢀⠎ ⠈⢢      ⢀⠤⠊          ⠉⠁            ⠘⢄               ⡠⠊   │
│         │      ⢠⠃                           ⠈⠢⡀  ⡠⠒⠁              ⠘⢄   ⡰⠁                    ⠉⠉⠉⠒⠊          ⠈⢢      ⢀⠎    ⠑⢄  ⡠⠒⠁                            ⠣⠤⣀⣀⣀       ⢀⠔⠉     │
│         │⠤⠤⠤⠤⠤⠤⠃                              ⠈⠢⠊                   ⠣⡀⡰⠁                                      ⠱⡀   ⢀⠎       ⠑⠉                                    ⠉⠉⠉⠉⠒⠒⠒⠁       │
│         │                                                            ⠑⠁                                        ⠑⡄ ⢀⠎                                                             │
│      905│                                                                                                       ⠈⢆⠎                                                              │
│         └──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────  │
│          2019-12-02 2122   2019-12-02 2137   2019-12-02 2136   2019-12-02 2128   2019-12-02 2108   2019-12-02 2130   2019-12-02 2129   2019-12-02 2115   2019-12-02 2119         │
│                                                                                                                                                                                  │
│                                                                                                                                                                                  │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘

Query a single metrics value for a specific endpoint

$ ./bin/swctl service ls projectC | jq '.[0].id' | xargs ./bin/swctl endpoint ls --service-id | jq '.[] | [.id] | join(",")' | xargs ./bin/swctl single-metrics --name endpoint_cpm --ids
[{"id":"22","value":116}]

Query metrics single values for all endpoints of service of id 3

$ ./bin/swctl service ls projectC | jq '.[0].id' | xargs ./bin/swctl endpoint ls --service-id | jq '.[] | [.id] | join(",")' | xargs ./bin/swctl single-metrics --name endpoint_cpm --end='2019-12-02 2137' --ids
[{"id":"3","value":116}]

Contributing

For developers who want to contribute to this project, see Contribution Guide

License

Apache 2.0 License.