CheckDocker

Check docker containers (state, health) and the docker daemon itself.

Enable module

To enable this module and and allow using the commands you need to ass CheckDocker = enabled to the [/modules] section in nsclient.ini:

[/modules]
CheckDocker = enabled

Queries

A quick reference for all available queries (check commands) in the CheckDocker module.

List of commands:

A list of all available queries (check commands)

Command	Description
check_docker	Check the state of docker containers, optionally requiring specific containers to be running.
check_docker_df	Check docker disk usage: images, containers, volumes, build cache and reclaimable space.
check_docker_info	Check that the docker daemon is healthy: version plus container and image counts.
check_docker_restarts	Detect container restart loops and out-of-memory kills.
check_docker_stats	Check per-container resource usage: CPU percent and memory versus limit.

check_docker

Check the state of docker containers, optionally requiring specific containers to be running.

About check_docker

check_docker checks the state of docker containers via the local daemon socket (/var/run/docker.sock on Linux, the \\.\pipe\docker_engine named pipe on Windows; configurable via the endpoint setting or host=). It works against any daemon speaking the docker API, including podman’s compatibility socket.

Three ways to use it:

• container=<name> (repeatable) — the “is my container running” mode: only the named containers are checked, and a name the daemon does not know gets the synthetic state missing, so it trips the default critical instead of silently disappearing from the listing.
• No arguments — lists running containers; nothing trips the default thresholds, so this is an inventory-style check.
• all=true — also includes stopped containers (like docker ps -a); any non-running container then trips the default critical (container_state != 'running'), so combine it with filter= on hosts where exited one-shot containers are expected.

The daemon endpoint is restricted to a local named pipe / absolute socket path: a UNC path in host= would make a Windows host authenticate to a remote SMB server with the service account, so anything non-local is refused outright.

Jump to section:

• Sample Commands
• Command-line Arguments
• Filter keywords

Sample Commands

Require that specific containers are running (a missing or stopped container is CRITICAL):

check_docker container=web-frontend
OK: web-frontend=running

check_docker container=web-frontend container=backup-agent
CRITICAL: backup-agent=missing

List all running containers (inventory-style):

check_docker
OK: web-frontend=running, database=running

Include stopped containers (docker ps -a) — any non-running container trips the default critical:

check_docker all=true
CRITICAL: old-job=exited

Use the container keywords in the output:

check_docker container=web-frontend "detail-syntax=%(names): %(image) %(container_status) ports=%(ports)" "top-syntax=${status}: ${list}"
OK: web-frontend: nginx:alpine Up 2 hours ports=0.0.0.0:18080->80/tcp,:::18080->80/tcp

Alert on failing container health checks instead of state:

check_docker "filter=has_health_check = 1" "warning=health = 'starting'" "critical=health = 'unhealthy'" "detail-syntax=%(names)=%(health)"
OK: web-frontend=healthy

A daemon that is down is clearly reported (UNKNOWN):

check_docker host=/var/run/missing.sock
Failed to connect to docker daemon at '/var/run/missing.sock': Failed to connect to /var/run/missing.sock: No such file or directory

Command-line Arguments

WindowsLinux

Option	Default Value	Description
host	\.\pipe\docker_engine	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.
all	false	Include stopped containers (docker ps -a); by default only running containers are listed.
container		Name of a container that must exist (repeatable). Implies all; a name the daemon does not know gets container_state ‘missing’.

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: \\.\pipe\docker_engine

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

all:

Include stopped containers (docker ps -a); by default only running containers are listed.

Default Value: false

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical	container_state != ‘running’
crit
ok
debug	false
show-all	false
empty-state	warning
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	No containers found
detail-syntax	${names}=${container_state}
perf-syntax	${names}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Option	Default Value	Description
host	/var/run/docker.sock	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.
all	false	Include stopped containers (docker ps -a); by default only running containers are listed.
container		Name of a container that must exist (repeatable). Implies all; a name the daemon does not know gets container_state ‘missing’.

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: /var/run/docker.sock

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

all:

Include stopped containers (docker ps -a); by default only running containers are listed.

Default Value: false

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical	container_state != ‘running’
crit
ok
debug	false
show-all	false
empty-state	warning
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	No containers found
detail-syntax	${names}=${container_state}
perf-syntax	${names}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Filter keywords

Option	Description
command	Command the container runs
container_state	Container state: created, restarting, running, removing, paused, exited, dead or missing (a requested container the daemon does not know about)
container_status	Human readable status, e.g. ‘Up 3 hours (healthy)’
created	When the container was created (date)
has_health_check	1 when the container defines a health check, else 0
health	Health-check state: healthy, unhealthy, starting or empty when the container has no health check
id	Container id
image	Image the container was created from
image_id	Id of the image the container was created from
ip	First IP address on any network the container is attached to
labels	Container labels as key=value, comma separated
names	Container name(s), comma separated
ports	Published/exposed ports, e.g. 0.0.0.0:8080->80/tcp

This command also supports the common filter keywords: count, total, ok_count, warn_count, crit_count, problem_count, list, ok_list, warn_list, crit_list, problem_list, detail_list, sep, status.

check_docker_df

Check docker disk usage: images, containers, volumes, build cache and reclaimable space.

About check_docker_df

check_docker_df reports docker’s disk usage the way docker system df does — images, container writable layers, volumes and the build cache — plus what a prune would reclaim: unused images (their non-shared size), stopped containers, unreferenced volumes and idle build cache.

The daemon computes this by walking every image layer, container filesystem and volume, so the request is slow on large hosts (seconds to minutes). The check therefore defaults to six times the module’s normal timeout; don’t schedule it more often than you need it.

All *_size / *_reclaimable keywords are byte-sized: thresholds take a unit (500M, 10G, 1T); a bare number is rejected. No default thresholds — a responding daemon is OK until you add limits.

Jump to section:

• Sample Commands
• Command-line Arguments
• Filter keywords

Sample Commands

Show docker disk usage (like docker system df):

check_docker_df
OK: images 71 (8.216GB), containers 19 (388KB), volumes 6 (4.517GB), build cache 12.808GB, reclaimable 21.479GB

Alert when a prune would free a lot of space (size thresholds take a unit):

check_docker_df "warning=total_reclaimable > 10G" "critical=total_reclaimable > 50G"
WARNING: images 71 (8.216GB), containers 19 (388KB), volumes 6 (4.517GB), build cache 12.808GB, reclaimable 21.479GB|'docker reclaimable'=23063090871B;10737418240;53687091200

Alert on unused images piling up:

check_docker_df "warning=unused_images > 20"
OK: images 71 (8.216GB), containers 19 (388KB), volumes 6 (4.517GB), build cache 12.808GB, reclaimable 21.479GB|'docker unused images'=63;20;0

Watch a specific category, e.g. the build cache:

check_docker_df "warning=build_cache_size > 20G" "detail-syntax=build cache %(build_cache_size) (reclaimable %(build_cache_reclaimable))"
OK: build cache 13752766549 (reclaimable 13752766549)|'docker build cache'=13752766549B;21474836480;0

Command-line Arguments

WindowsLinux

Option	Default Value	Description
host	\.\pipe\docker_engine	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	60	Timeout for talking to the daemon, in seconds (this endpoint is slow on large hosts).

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: \\.\pipe\docker_engine

timeout:

Timeout for talking to the daemon, in seconds (this endpoint is slow on large hosts).

Default Value: 60

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical
crit
ok
debug	false
show-all	false
empty-state	unknown
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	%(status): No disk usage information returned
detail-syntax	${message}
perf-syntax	docker
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Option	Default Value	Description
host	/var/run/docker.sock	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	60	Timeout for talking to the daemon, in seconds (this endpoint is slow on large hosts).

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: /var/run/docker.sock

timeout:

Timeout for talking to the daemon, in seconds (this endpoint is slow on large hosts).

Default Value: 60

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical
crit
ok
debug	false
show-all	false
empty-state	unknown
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	%(status): No disk usage information returned
detail-syntax	${message}
perf-syntax	docker
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Filter keywords

Option	Description
build_cache_reclaimable	Disk freed by pruning the idle build cache (bytes)
build_cache_size	Disk used by the build cache (bytes)
containers	Number of containers (running and stopped)
containers_reclaimable	Disk freed by pruning stopped containers (bytes)
containers_size	Disk used by container writable layers (bytes)
images	Number of images
images_reclaimable	Disk freed by pruning unused images (bytes)
images_size	Disk used by all image layers, deduplicated as in docker system df (bytes; supports units, e.g. images_size > 10G)
message	Human readable disk-usage summary
total_reclaimable	Total disk a full prune would free (bytes)
total_size	Total disk used by docker (bytes)
unused_images	Number of images not used by any container
unused_volumes	Number of volumes not referenced by any container
volumes	Number of volumes
volumes_reclaimable	Disk freed by pruning unused volumes (bytes)
volumes_size	Disk used by volumes (bytes)

This command also supports the common filter keywords: count, total, ok_count, warn_count, crit_count, problem_count, list, ok_list, warn_list, crit_list, problem_list, detail_list, sep, status.

check_docker_info

Check that the docker daemon is healthy: version plus container and image counts.

About check_docker_info

check_docker_info checks the docker daemon itself: it reads /info from the local daemon socket and reports the server version, host name and the container/image counts. A responding daemon is OK unless you threshold the counts; an unreachable daemon is UNKNOWN with the transport error — which makes this the natural “is docker itself healthy” companion to per-container check_docker checks.

Count keywords used in thresholds are emitted as performance data.

Jump to section:

• Sample Commands
• Command-line Arguments
• Filter keywords

Sample Commands

Check that the docker daemon itself is up and responding:

check_docker_info
OK: docker 29.5.3 on docker-host: 16 running, 0 paused, 4 stopped containers, 231 images

Alert when nothing is running (or too much is stopped), with perf data:

check_docker_info "warning=running < 1" "critical=stopped > 100"
OK: docker 29.5.3 on docker-host: 16 running, 0 paused, 4 stopped containers, 231 images|'docker-host running'=16;1;0 'docker-host stopped'=4;0;100

A daemon that is down is clearly reported (UNKNOWN):

check_docker_info host=/var/run/missing.sock
Failed to connect to docker daemon at '/var/run/missing.sock': Failed to connect to /var/run/missing.sock: No such file or directory

Command-line Arguments

WindowsLinux

Option	Default Value	Description
host	\.\pipe\docker_engine	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: \\.\pipe\docker_engine

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical
crit
ok
debug	false
show-all	false
empty-state	unknown
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	%(status): No daemon information returned
detail-syntax	docker ${version} on ${name}: ${running} running, ${paused} paused, ${stopped} stopped containers, ${images} images
perf-syntax	${name}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Option	Default Value	Description
host	/var/run/docker.sock	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: /var/run/docker.sock

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical
crit
ok
debug	false
show-all	false
empty-state	unknown
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	%(status): No daemon information returned
detail-syntax	docker ${version} on ${name}: ${running} running, ${paused} paused, ${stopped} stopped containers, ${images} images
perf-syntax	${name}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Filter keywords

Option	Description
containers	Total number of containers
images	Number of images
name	Daemon host name
os	Operating system the daemon runs on
paused	Number of paused containers
running	Number of running containers
stopped	Number of stopped containers
version	Docker server version

This command also supports the common filter keywords: count, total, ok_count, warn_count, crit_count, problem_count, list, ok_list, warn_list, crit_list, problem_list, detail_list, sep, status.

check_docker_restarts

Detect container restart loops and out-of-memory kills.

About check_docker_restarts

check_docker_restarts detects crash-looping and OOM-killed containers via the inspect endpoint (RestartCount, State.OOMKilled, State.StartedAt, State.ExitCode). It always includes stopped containers: a crash-looping container spends most of its time not-running, and a final crash leaves it exited — both must stay visible.

Default thresholds encode the crash-loop signature: warning when restart_count > 3 and started < 15m and started >= 0 (many restarts and a recent start — a container that has been up for a month is fine no matter how bumpy its past), critical when oom_killed = 1 (the last exit was an out-of-memory kill).

container=<name> (repeatable) scopes the check to specific containers. Note that restart_count is cumulative for the container’s lifetime; that is why the default warning also requires a recent start before it fires.

Jump to section:

• Sample Commands
• Command-line Arguments
• Filter keywords

Sample Commands

Detect restart loops (default: WARNING when a container restarted more than 3 times and last started within 15 minutes; OOM kills are CRITICAL):

check_docker_restarts
WARNING: crashy-app: 8 restarts, restarting

A stable container is OK no matter how bumpy its distant past:

check_docker_restarts container=app-backend
OK: app-backend: 0 restarts, running

An out-of-memory kill is CRITICAL by default:

check_docker_restarts container=greedy-app
CRITICAL: greedy-app: 2 restarts, exited

Custom rules using the keywords (e.g. any restart of a specific container within the last hour):

check_docker_restarts container=app-backend "warning=restart_count > 0 and started < 1h" "detail-syntax=%(names): %(restart_count) restarts, up %(started)s, exit=%(exit_code) oom=%(oom_killed)"
OK: app-backend: 0 restarts, up 236s, exit=0 oom=0|'app-backend restarts'=0;0;0

Command-line Arguments

WindowsLinux

Option	Default Value	Description
host	\.\pipe\docker_engine	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.
container		Only inspect the named container (repeatable).

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: \\.\pipe\docker_engine

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning	restart_count > 3 and started < 15m and started >= 0
warn
critical	oom_killed = 1
crit
ok
debug	false
show-all	false
empty-state	ok
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	No containers found
detail-syntax	${names}: ${restart_count} restarts, ${container_state}
perf-syntax	${names}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Option	Default Value	Description
host	/var/run/docker.sock	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.
container		Only inspect the named container (repeatable).

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: /var/run/docker.sock

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning	restart_count > 3 and started < 15m and started >= 0
warn
critical	oom_killed = 1
crit
ok
debug	false
show-all	false
empty-state	ok
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	No containers found
detail-syntax	${names}: ${restart_count} restarts, ${container_state}
perf-syntax	${names}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Filter keywords

Option	Description
container_state	Container state: created, restarting, running, removing, paused, exited or dead
exit_code	Exit code of the last exit (0 while running fine)
image	Image the container was created from
names	Container name(s), comma separated
oom_killed	1 when the last exit was an out-of-memory kill, else 0
restart_count	How many times the container has been restarted (since creation)
started	Seconds since the container last started, -1 when it never started (supports units, e.g. started < 10m)

This command also supports the common filter keywords: count, total, ok_count, warn_count, crit_count, problem_count, list, ok_list, warn_list, crit_list, problem_list, detail_list, sep, status.

check_docker_stats

Check per-container resource usage: CPU percent and memory versus limit.

About check_docker_stats

check_docker_stats samples per-container resource usage the way docker stats does: CPU as a percentage of the host (delta of the container’s CPU time over the host’s, scaled by online CPUs) and memory usage with the page cache excluded, against the container’s memory limit.

Sampling uses the daemon’s stream=false stats mode, which takes two readings about a second apart so the CPU delta is meaningful — expect roughly one second per sampled container. On hosts with many containers, scope the check with container=<name> (repeatable) or accept the added latency.

Size-typed thresholds need a unit (1b, 64k, 200M, 1G); a bare number is rejected. No default thresholds: an idle container is OK until you say otherwise.

Jump to section:

• Sample Commands
• Command-line Arguments
• Filter keywords

Sample Commands

Check resource usage of a specific container:

check_docker_stats container=app-backend
OK: app-backend: cpu 2%, memory 45.2MB of 256MB (17%)

Alert on memory pressure or CPU saturation (thresholded keywords become perf data):

check_docker_stats container=app-backend "warning=memory_pct > 80" "critical=memory_pct > 95"
OK: app-backend: cpu 2%, memory 45.2MB of 256MB (17%)|'app-backend memory %'=17%;80;95

Absolute memory thresholds take byte units (1b, 64k, 200M, 1G, …):

check_docker_stats container=app-backend "critical=memory_used > 200M"
OK: app-backend: cpu 2%, memory 45.2MB of 256MB (17%)|'app-backend memory'=47401984B;0;209715200

Sample every running container (about a second per container, so scope on busy hosts):

check_docker_stats "warning=cpu_pct > 80"
OK: web-frontend: cpu 1%, memory 12.4MB of 15.35GB (0%), app-backend: cpu 2%, memory 45.2MB of 256MB (17%)

Command-line Arguments

WindowsLinux

Option	Default Value	Description
host	\.\pipe\docker_engine	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.
container		Only sample the named container (repeatable). Sampling takes about a second per container, so scope this check on busy hosts.

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: \\.\pipe\docker_engine

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical
crit
ok
debug	false
show-all	false
empty-state	ok
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	No running containers
detail-syntax	${names}: cpu ${cpu_pct}%, memory ${memory} (${memory_pct}%)
perf-syntax	${names}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Option	Default Value	Description
host	/var/run/docker.sock	The local docker daemon socket (named pipe on Windows, unix socket elsewhere).
timeout	10	Timeout for talking to the daemon, in seconds.
container		Only sample the named container (repeatable). Sampling takes about a second per container, so scope this check on busy hosts.

host:

The local docker daemon socket (named pipe on Windows, unix socket elsewhere).

Default Value: /var/run/docker.sock

timeout:

Timeout for talking to the daemon, in seconds.

Default Value: 10

Common options:

These options are shared by all filter based commands and are described on the common options page; the default values below are specific to this command.

Option	Default Value
filter
warning
warn
critical
crit
ok
debug	false
show-all	false
empty-state	ok
perf-config
escape-html	false
list-separator	,
top-syntax	${status}: ${list}
ok-syntax
empty-syntax	No running containers
detail-syntax	${names}: cpu ${cpu_pct}%, memory ${memory} (${memory_pct}%)
perf-syntax	${names}
byte-unit
decimal-separator
decimals	-1
thousands-separator

This command also accepts the standard help options: help, help-pb, show-default, help-short.

Filter keywords

Option	Description
cpu_pct	CPU usage in percent of the host (like docker stats)
image	Image the container was created from
memory	Memory usage as human readable text, e.g. 45.2M of 512M (display only; threshold on memory_used or memory_pct)
memory_limit	Memory limit in bytes (the host’s total memory when the container is unlimited)
memory_pct	Memory usage in percent of the container’s limit
memory_used	Memory used in bytes, page cache excluded (supports size units, e.g. memory_used > 200M)
names	Container name(s), comma separated

This command also supports the common filter keywords: count, total, ok_count, warn_count, crit_count, problem_count, list, ok_list, warn_list, crit_list, problem_list, detail_list, sep, status.

Configuration

Path / Section	Description
/settings/docker

/settings/docker

Key	Default Value	Description
endpoint	\.\pipe\docker_engine	DOCKER ENDPOINT
timeout	10	TIMEOUT

# 
[/settings/docker]
endpoint=\\.\pipe\docker_engine
timeout=10

WindowsLinux

DOCKER ENDPOINT

The local docker daemon socket: a named pipe (\\.\pipe\docker_engine) on Windows, a unix socket (/var/run/docker.sock) elsewhere.

Key	Description
Path:	/settings/docker
Key:	endpoint
Default value:	\\.\pipe\docker_engine

Sample:

[/settings/docker]
# DOCKER ENDPOINT
endpoint=\\.\pipe\docker_engine

DOCKER ENDPOINT

The local docker daemon socket: a named pipe (\\.\pipe\docker_engine) on Windows, a unix socket (/var/run/docker.sock) elsewhere.

Key	Description
Path:	/settings/docker
Key:	endpoint
Default value:	/var/run/docker.sock

Sample:

[/settings/docker]
# DOCKER ENDPOINT
endpoint=/var/run/docker.sock

TIMEOUT

Timeout for talking to the daemon, in seconds.

Key	Description
Path:	/settings/docker
Key:	timeout
Advanced:	Yes (means it is not commonly used)
Default value:	10

Sample:

[/settings/docker]
# TIMEOUT
timeout=10