Logsene CLI

Logsene Command-line Interface

Enables searching Logsene log entries from the command-line.
Currently supports OS X and Linux.

Installation

npm install logsene-cli -g

or

git clone https://github.com/sematext/logsene-cli.git
cd logsene-cli && npm install
npm link

To test, simply run:

npm test

Logsene

Logsene is a centralized log management solution. You basically upload your logs in bulk or real-time from all your servers. Those logs are then aggregated by time and shown in the Logsene web application,
where you have the ability to search for specific terms, narrow down time ranges, filter fields, setup alerts, ...

!Logsene Web APP

A quick rundown of most notable features of Logsene:

- All your logs accessible in one place
- Control who sees which data
- Be up and running within minutes -- there is nothing to install or maintain
- Log Alerts & Anomaly Detection
- Saved Searches
- Scheduled Reporting
- CoreOS Log Collection
- Docker container monitoring
- REST API

Shipping logs with node.js

Our other project logagent-js can be used to parse and ship logs to Logsene, both from your JavaScript source or from the command line.

Logsene CLI

Logsene CLI gives you capability to search through your logs from the command line, which brings the awesome benefit of being able to pipe results to awk, sed, cut, sort, head and other friends from the *nix command-line.

Imagine a situation where you suspected that your site were under a DoS attack.
You'd be interested in quickly finding out the top offenders.
Here’s a one-liner that shows top originating IP addresses in the last 10 minutes (also shows how to use the -f switch to specify which field(s) to return - field host, in this example):

$ logsene search -t 10m -f host | sort | uniq -c | sort -r | head -n20

!Top IPs

You can find more useful examples in the blog post
that announced the release of Logsene CLI.

Logsene CLI Session

We define L-CLI session as a set of commands issued by an user, with no more than 30m between them.
Every session has a set of configuration parameters that control the way L-CLI behaves.
E.g. which Region is used, which Sematext account is used (--api-key); which Logsene application is used (--token);
is tracing information going to be displayed (--trace).

For controlling those settings, we use config set and config get commands.
For convenience reasons, you don't have to deal with API and APP keys manually.
L-CLI automatically retrieves region and both api-key and token keys on each session start,
as users login and choose Logsene application.
L-CLI then writes those parameters to the session configuration store and
reuses them on each subsequent command, until the session times out (after 30m of inactivity).

!Login image

The session primitives were introduced in order to enable frictionless multi-user experience, where all users may possibly be accessing L-CLI from the same box (while being SSHd into it), using the same Sematext account and possibly even the same Logsene application.

Commands

$3

``
Usage: logsene search [query] [OPTIONS]
where OPTIONS may be:
-q Query string (-q parameter can be omitted)
-f OPTIONAL Fields to return (defaults to all fields)
-t OPTIONAL datetime, duration or range (defaults to last hour)
-s OPTIONAL Number of matches to return (defaults to 200)
-o OPTIONAL Number of matches to skip from the beginning (defaults to 0)
-op AND OPTIONAL Overrides default OR operator between multiple query terms
--json OPTIONAL Returns log entries in JSON instead of TSV format
--sep OPTIONAL Sets the separator between start and end of time ranges

Examples:
logsene search
returns last 1h of log entries
note: default return limit of 200 hits is always in effect unless you
explicitly change it with the -s switch (where -s without params
disables the limit altogether)

logsene search -q ERROR
returns last 1h of log entries that contain the term ERROR

logsene search ERROR
equivalent to the previous example

logsene search UNDEFINED SEGFAULT
returns last 1h of log entries that have either of the terms
note: default operator is OR

logsene search SEGFAULT Segmentation -op AND
returns last 1h of log entries that have both terms
note: convenience parameter --and has the same effect

logsene search -q "Server not responding"
returns last 1h of log entries that contain the given phrase

logsene search "rare thing" -t 1y8M4d8h30m2s
returns all the log entries that contain the phrase "rare thing" reaching
back to 1 year 8 months 4 days 8 hours 30 minutes and 2 seconds
note: when specifying duration, any datetime designator character can be
omited (shown in the following two examples)
note: months must be specified with uppercase M (distinction from minutes)
note: minutes (m) are the default, so "m" can be omited

logsene search -t 1h30m
returns all the log entries from the last 1,5h

logsene search -t 90
equivalent to the previous example (default time unit is minute)

logsene search -t 2015-06-20T20:48
returns all the log entries that were logged after the provided datetime
note: allowed formats listed at the bottom of this help message

logsene search -t "2015-06-20 20:28"
returns all the log entries that were logged after the provided datetime
note: if a parameter contains spaces, it must be enclosed in quotes

logsene search -t 2015-06-16T22:27:41/2015-06-18T22:27:41
returns all the log entries between the two provided timestamps
note: date range must either contain forward slash between datetimes,
or a different range separator must be specified (next example)

logsene search -t "2015-06-16T22:27:41 TO 2015-06-18T22:27:41" --sep " TO "
same as previous command, except it sets the custom string separator that
denotes a range
note: default separator is the forward slash (as per ISO-8601)
note: if a parameter contains spaces, it must be enclosed in quotes

logsene search -t "last Friday at 13/last Friday at 13:30"
it is also possible to use "human language" to designate datetime
note: it may be used only in place of datetime. Expressing range is not
possible (e.g. "last friday between 12 and 14" is not allowed)
note: may yield unpredictable datetime values

logsene search -q ERROR -s 20
returns at most 20 log entries (within the last hour) with the term ERROR

logsene search ERROR -s 50 -o 20
returns chronologically sorted hits 21st to 71st (offset is 20)
note: default sort order is ascending (latest entries at the bottom)

logsene search --help
outputs this usage information

Allowed datetime formats:
YYYY[-]MM[-]DD(T, )[HH[:MM[:SS]]]
e.g.
YYYY-MM-DD HH:mm:ss
YYYY-MM-DDTHH:mm
YYYY-MM-DDHH:mm
YYYYMMDDTHH:mm
YYYYMMDD HH:mm
YYYY-MM-DD
YYYYMMDD
YYYY-MM-DD HHmm
YYYYMMDD HHmm
YYYY-MM-DDTHHmm
YYYYMMDDTHH:mm
YYYYMMDDTHHmm
YYYYMMDDTHH:mm
YYYY-MM-DDTHHmmss
YYYYMMDDHHmmss
note: date part may be separated from time by T (ISO-8601) or space
note: if datetime contains a space, it must be enclosed in double quotes

Allowed duration format:
[Ny][NM][Nd][Nh][Nm][Ns]
e.g.
1y2M8d22h8m48s
note: uppercase M must be used for months, lowercase m for minutes
note: if only a number is specified, it defaults to minutes

Allowed range formats
range can be expressed in all datetime/duration combinations:
datetime/datetime
datetime/(+|-)duration
duration/(+|-)duration
duration/datetime
note: / is default range separator; + or - sign is duration direction
note: duration must begin with either + or - when used in end of range position

The following table shows how ranges are calculated, given the different input parameters
┌──────────────────────────────────────┬─────────────────────────────┬──────────────────────┐
│ -t parameter │ range start │ range end │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2016-06-24T18:42 │ timestamp │ now │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2016-06-24T18:42/2016-06-24T18:52:30 │ timestamp │ timestamp │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2016-06-24T18:42/+1d │ timestamp │ timestamp + duration │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2016-06-24T18:42/-1d │ timestamp - duration │ timestamp │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2h30m8s │ now - duration │ now │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2h/+1h │ now - duration1 │ start + duration2 │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 2h/-1h │ now - duration1 - duration2 │ now - duration1 │
├──────────────────────────────────────┼─────────────────────────────┼──────────────────────┤
│ 5d10h25/2016-06-24T18:42 │ now - duration │ timestamp │
└──────────────────────────────────────┴─────────────────────────────┴──────────────────────┘
note: all allowable datetime formats are also permitted when specifying ranges
note: disallowed range separators:
Y, y, M, D, d, H, h, m, S, s, -, +, P, p, T, t

Allowed "human" formats (all in local time):
10 minutes ago
yesterday at 12:30pm
last night (night becomes 19:00)
last month
last friday at 2pm
3 hours ago
2 weeks ago at 17
wednesday 2 weeks ago
2 months ago
last week saturday morning (morning becomes 06:00)
note: "human" format can only be used instead of date-time
note: it is not possible to express duration with "human" format (e.g. "from 2 to 3 this morining")
note: it is recommended to avoid human format, as it may yield unexpected results
`

$3

`
Usage: logsene config set [OPTIONS]
where OPTIONS may be:
--api-key
--token
--default-size
--range-separator
--trace

It is not necessary to explicitly set api-key nor token.
Logsene CLI will ask you to log in and choose Logsene application
if keys are missing from the configuration
Examples:
logsene config set --api-key 11111111-1111-1111-1111-111111111111
sets the api key for the current session

logsene config set --token 22222222-2222-2222-2222-222222222222
sets Logsene application key for the current session

logsene config set --default-size 3000
sets default number of hits returned for the current session (overrides the default 200)

logsene config set --range-separator TO
sets default separator of two datetimes for time ranges (default is /, as per ISO6801)

logsene config set --trace [true]
activates tracing for the current session (true can be omitted)

logsene config set --trace false
deactivates tracing for the current session
`




$3

`
Usage: logsene config get [OPTION] Where OPTION may be:
--api-key
--token
--app-name
--default-size (sets the default number of hits returned for the current session)
--range-separator (used to separate start and end of a time range)
--trace
--region (which region has been set during login - US or EU)
--all (return listing of all params from the current user's session)
`




Changelog


2.3.0 - 2019-02-05
- add region selection to login
- add http Authorization header for ES requests
- remove deprecated _cache ES search payload parameter
2.2.0 - 2018-02-20
- apply fields param to _source (unlike previous stored_fields and fields param)
2.1.1 - 2018-02-20
- fixed fields` bug and adjusted param name (ES version compatibility: fields -> stored_fields)