DC/OS CLI Subcommand for mesos maintenance

CAUTION: This is not battle-hardened yet. USE AT YOUR OWN RISK.

Subcommands

$ dcos maintenance

usage: dcos maintenance [<flags>] <command>


Flags:
  -h, --help                Show context-sensitive help.
  -v, --verbose             Enable extra logging of requests/responses
      --name="maintenance"  Name of the service instance to query

Commands:
  help [<command> ...]
    Show help.


  machine up [<flags>]
    Stop maintenance for machines

    --list=LIST  Name of a specific file which contains hostname, ip lists for machine up.


  machine down [<flags>]
    Start maintenance for machines

    --list=LIST  Name of a specific file which contains hostname, ip lists for machine down.


  schedule view [<flags>]
    Display current maintenance schedule

    --json  Show raw JSON response instead of user-friendly tree


  schedule add --start-at=START-AT --duration=DURATION --list=LIST
    Add maintenance schedule

    --start-at=START-AT  Start time of this maintenance schedule.
    --duration=DURATION  Duration of maintenance schedule. Can use unit h for hours, m for minutes, s for seconds. e.g: 1h.
    --list=LIST          Name of the list file to update


  schedule remove --list=LIST
    Remove maintenance schedule

    --list=LIST  Name of the list file to update


  status [<flags>]
    Display current maintenance status

    --json  Show raw JSON response instead of user-friendly tree


  loglevel set --duration=DURATION --level=LEVEL [<flags>]
    set log level of agent.

    --agent-id=AGENT-ID  Agent id of the target mesos slave node. If missing, all slave nodes are targeted.
    --duration=DURATION  Duration of modified log level. Can use unit h for hours, m for minutes, s for seconds. e.g: 1h.
    --level=LEVEL        Level of log. 0 to 6.


  loglevel get [<flags>]
    Get logging level of an agent.

    --agent-id=AGENT-ID  Agent ID of the target mesos slave node. If missing, all slave nodes are targeted.


  exhibitor delete --[no-]confirm [<flags>]
    Delete znode on DC/OS Master Exhibitor

    --znode=ZNODE  ZNode path for deletion.
    --confirm      Confirm this deletion.

maintenance machine

down

up

Examples

• down

$ dcos maintenance machine down --list="list.csv"

• up

$ dcos maintenance machine up --list="list.csv"

maintenance schedule

add

Add machines to schedule with --start-at and --duration flag. Target machines are supplied with --list flag, CSV file format. This command does not add machines to current schedules. It creates new Window with start time and duration, and add it to schedule.

• Thanks to araddon/dateparse library, start time can handle very wide range of format. See more on their examples.
• Duration uses golang time.Duration which can handle a unit suffix, such as "300ms", "-1.5h" or "2h45m". Valid time units are ns, us, ms, s, m, h.
• Host/IP list file is handled by golang encoding/csv. First column is hostname and second is IP address. The CSV reader can handle comment line starting with # also.

# Host, IP
ap1,10.10.10.1
ap2,10.10.10.2

remove

Remove machines from all current schedule windows. Target machines are supplied with --list flag, CSV file format.

view

Simply view current schedule.

Examples

• view

$ dcos maintenance schedule view
Window	Hostname		IP		Start				Duration
0	ap13.dcos.ajway.kr	172.22.30.51	2019-01-11 09:00:00 +0900 KST	168h0m0s

• add

$ dcos maintenance schedule add --start-at="2019-01-01" --duration="200s" --list="list.csv"
Maintenance schedule updated successfully.

• remove

$ dcos maintenance schedule remove --list="list.csv"
Maintenance schedule updated successfully.

• list.csv

# Host,IP
ap1,10.10.10.1
ap2,10.10.10.2

maintenance status

Display status of current schedule.

Examples

• status

$ dcos maintenance status
Status		Hostname		IP		Offer
Draining	ap13.dcos.ajway.kr	172.22.30.51	none

maintenance loglevel

Examples

• Set log level of agent ef71ac72-3f3e-4bd8-9i4a-4db098706e06-S10 to 6 during 10 seconds:

$ dcos maintenance loglevel set --agent-id=ef71ac72-3f3e-4bd8-9i4a-4db098706e06-S10 --level=6 --duration=10s

How to

Build

• Install docker >= 1.13
• Run make build(or manually run command in Makefile).

Install

• First of all, see this document for dc/os cli subcommand plugin: https://github.com/dcos/dcos-cli/blob/master/design/plugin.md

• Make direcdories like:

$ mkdir -p ~/.dcos/clusters/<cluster-hash>/subcommands/maintenance
$ mkdir -p ~/.dcos/clusters/<cluster-hash>/subcommands/maintenance/env/bin

• Copy binary into env/bin

$ cp build/dcos-maintenance-<OS> ~/.dcos/clusters/<cluster-hash>/subcommands/maintenance/env/bin/dcos-maintenance

• Copy plugin.toml

$ cp plugin.toml ~/.dcos/clusters/<cluster-hash>/subcommands/maintenance/env/

• Touch package.json

$ touch ~/.dcos/clusters/<cluster-hash>/subcommands/maintenance/package.json

From this moment, your dcos-cli should recognize maintenance subcommand plugin.

$ dcos
Command line utility for the Mesosphere Datacenter Operating
System (DC/OS). The Mesosphere DC/OS is a distributed operating
system built around Apache Mesos. This utility provides tools
for easy management of a DC/OS installation.

Available DC/OS commands:

	auth           	Authenticate to DC/OS cluster
	cluster        	Manage your DC/OS clusters
	config         	Manage the DC/OS configuration file
	experimental   	Manage commands that are under development
	help           	Display help information about DC/OS
	job            	Deploy and manage jobs in DC/OS
	maintenance    	Maintenance DC/OS CLI Module
	marathon       	Deploy and manage applications to DC/OS
	node           	View DC/OS node information
	package        	Install and manage DC/OS software packages
	service        	Manage DC/OS services
	task           	Manage DC/OS tasks

Get detailed command description with 'dcos <command> --help'.

Acknowledgement

• Main idea is inspired by https://github.com/dcos-labs/dcos-management
• The client code is heavily adopted from https://github.com/mesosphere/dcos-commons/tree/master/cli
• Thanks to @araddon for great datetime parser for go