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Formatting changes to make 1.12.x ref docs buildable in Jekyll

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Signed-off-by: Misty Stanley-Jones <misty@docker.com>
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Misty Stanley-Jones
2016-11-08 10:14:36 -08:00
parent 6b644ecc19
commit cf60af87f9
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docs/reference/commandline/dockerd.md
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@@ -1,16 +1,13 @@
<!--[metadata]>
+++
title = "dockerd"
aliases = ["/engine/reference/commandline/daemon/"]
description = "The daemon command description and usage"
keywords = ["container, daemon, runtime"]
[menu.main]
parent = "smn_cli"
weight = -1
+++
<![end-metadata]-->
# daemon
---
redirect_from:
- /reference/commandline/dockerd/
- /reference/commandline/daemon/
- /engine/reference/commandline/daemon/
description: The daemon command description and usage
keywords:
- container, daemon, runtime
title: dockerd
---
```markdown
Usage: dockerd [OPTIONS]
@@ -236,7 +233,7 @@ snapshots. For each devicemapper graph location – typically
`/var/lib/docker/devicemapper` – a thin pool is created based on two block
devices, one for data and one for metadata. By default, these block devices
are created automatically by using loopback mounts of automatically created
sparse files. Refer to [Storage driver options](#storage-driver-options) below
sparse files. Refer to [Storage driver options](dockerd.md#storage-driver-options) below
for a way how to customize this setup.
[~jpetazzo/Resizing Docker containers with the Device Mapper plugin](http://jpetazzo.github.io/2014/01/29/docker-device-mapper-resize/)
article explains how to tune your existing setup without the use of options.
@@ -248,7 +245,7 @@ does not share executable memory between devices. Use
The `zfs` driver is probably not as fast as `btrfs` but has a longer track record
on stability. Thanks to `Single Copy ARC` shared blocks between clones will be
cached only once. Use `dockerd -s zfs`. To select a different zfs filesystem
set `zfs.fsname` option as described in [Storage driver options](#storage-driver-options).
set `zfs.fsname` option as described in [Storage driver options](dockerd.md#storage-driver-options).
The `overlay` is a very fast union filesystem. It is now merged in the main
Linux kernel as of [3.18.0](https://lkml.org/lkml/2014/10/26/137). `overlay`
@@ -280,7 +277,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
#### Devicemapper options
* `dm.thinpooldev`
* `dm.thinpooldev`
Specifies a custom block storage device to use for the thin pool.
@@ -307,7 +304,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.thinpooldev=/dev/mapper/thin-pool
```
* `dm.basesize`
* `dm.basesize`
Specifies the size to use when creating the base device, which limits the
size of images and containers. The default value is 10G. Note, thin devices
@@ -325,7 +322,6 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.basesize=50G
```
This will increase the base device size to 50G. The Docker daemon will throw an
error if existing base device size is larger than 50G. A user can use
this option to expand the base device size however shrinking is not permitted.
@@ -346,7 +342,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.basesize=20G
```
* `dm.loopdatasize`
* `dm.loopdatasize`
> **Note**:
> This option configures devicemapper loopback, which should not
@@ -363,7 +359,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.loopdatasize=200G
```
* `dm.loopmetadatasize`
* `dm.loopmetadatasize`
> **Note**:
> This option configures devicemapper loopback, which should not
@@ -380,7 +376,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.loopmetadatasize=4G
```
* `dm.fs`
* `dm.fs`
Specifies the filesystem type to use for the base device. The supported
options are "ext4" and "xfs". The default is "xfs"
@@ -391,7 +387,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.fs=ext4
```
* `dm.mkfsarg`
* `dm.mkfsarg`
Specifies extra mkfs arguments to be used when creating the base device.
@@ -401,7 +397,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt "dm.mkfsarg=-O ^has_journal"
```
* `dm.mountopt`
* `dm.mountopt`
Specifies extra mount options used when mounting the thin devices.
@@ -411,7 +407,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.mountopt=nodiscard
```
* `dm.datadev`
* `dm.datadev`
(Deprecated, use `dm.thinpooldev`)
@@ -429,7 +425,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
--storage-opt dm.metadatadev=/dev/sdc1
```
* `dm.metadatadev`
* `dm.metadatadev`
(Deprecated, use `dm.thinpooldev`)
@@ -453,7 +449,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
--storage-opt dm.metadatadev=/dev/sdc1
```
* `dm.blocksize`
* `dm.blocksize`
Specifies a custom blocksize to use for the thin pool. The default
blocksize is 64K.
@@ -464,7 +460,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.blocksize=512K
```
* `dm.blkdiscard`
* `dm.blkdiscard`
Enables or disables the use of blkdiscard when removing devicemapper
devices. This is enabled by default (only) if using loopback devices and is
@@ -480,7 +476,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.blkdiscard=false
```
* `dm.override_udev_sync_check`
* `dm.override_udev_sync_check`
Overrides the `udev` synchronization checks between `devicemapper` and `udev`.
`udev` is the device manager for the Linux kernel.
@@ -520,7 +516,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
> Otherwise, set this flag for migrating existing Docker daemons to
> a daemon with a supported environment.
* `dm.use_deferred_removal`
* `dm.use_deferred_removal`
Enables use of deferred device removal if `libdm` and the kernel driver
support the mechanism.
@@ -542,7 +538,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
$ sudo dockerd --storage-opt dm.use_deferred_removal=true
```
* `dm.use_deferred_deletion`
* `dm.use_deferred_deletion`
Enables use of deferred device deletion for thin pool devices. By default,
thin pool device deletion is synchronous. Before a container is deleted,
@@ -568,7 +564,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
when unintentional leaking of mount point happens across multiple mount
namespaces.
* `dm.min_free_space`
* `dm.min_free_space`
Specifies the min free space percent in a thin pool require for new device
creation to succeed. This check applies to both free data space as well
@@ -600,7 +596,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
#### ZFS options
* `zfs.fsname`
* `zfs.fsname`
Set zfs filesystem under which docker will create its own datasets.
By default docker will pick up the zfs filesystem where docker graph
@@ -614,9 +610,9 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
#### Btrfs options
* `btrfs.min_space`
* `btrfs.min_space`
Specifies the mininum size to use when creating the subvolume which is used
Specifies the minimum size to use when creating the subvolume which is used
for containers. If user uses disk quota for btrfs when creating or running
a container with **--storage-opt size** option, docker should ensure the
**size** cannot be smaller than **btrfs.min_space**.
@@ -629,7 +625,7 @@ options for `zfs` start with `zfs` and options for `btrfs` start with `btrfs`.
#### Overlay2 options
* `overlay2.override_kernel_check`
* `overlay2.override_kernel_check`
Overrides the Linux kernel version check allowing overlay2. Support for
specifying multiple lower directories needed by overlay2 was added to the
@@ -657,19 +653,20 @@ Runtimes can be registered with the daemon either via the
configuration file or using the `--add-runtime` command line argument.
The following is an example adding 2 runtimes via the configuration:
```json
"default-runtime": "runc",
"runtimes": {
"runc": {
"path": "runc"
},
"custom": {
"path": "/usr/local/bin/my-runc-replacement",
"runtimeArgs": [
"--debug"
]
}
"default-runtime": "runc",
"runtimes": {
"runc": {
"path": "runc"
},
"custom": {
"path": "/usr/local/bin/my-runc-replacement",
"runtimeArgs": [
"--debug"
]
}
}
```
This is the same example via the command line:
@@ -829,35 +826,35 @@ $ sudo dockerd \
The currently supported cluster store options are:
* `discovery.heartbeat`
* `discovery.heartbeat`
Specifies the heartbeat timer in seconds which is used by the daemon as a
keepalive mechanism to make sure discovery module treats the node as alive
in the cluster. If not configured, the default value is 20 seconds.
* `discovery.ttl`
* `discovery.ttl`
Specifies the ttl (time-to-live) in seconds which is used by the discovery
module to timeout a node if a valid heartbeat is not received within the
configured ttl value. If not configured, the default value is 60 seconds.
* `kv.cacertfile`
* `kv.cacertfile`
Specifies the path to a local file with PEM encoded CA certificates to trust
* `kv.certfile`
* `kv.certfile`
Specifies the path to a local file with a PEM encoded certificate. This
certificate is used as the client cert for communication with the
Key/Value store.
* `kv.keyfile`
* `kv.keyfile`
Specifies the path to a local file with a PEM encoded private key. This
private key is used as the client key for communication with the
Key/Value store.
* `kv.path`
* `kv.path`
Specifies the path in the Key/Value store. If not configured, the default value is 'docker/nodes'.
@@ -994,7 +991,7 @@ following algorithm to create the mapping ranges:
If you enable user namespaces on the daemon, all containers are started
with user namespaces enabled. In some situations you might want to disable
this feature for a container, for example, to start a privileged container (see
[user namespace known restrictions](#user-namespace-known-restrictions)).
[user namespace known restrictions](dockerd.md#user-namespace-known-restrictions)).
To enable those advanced features for a specific container use `--userns=host`
in the `run/exec/create` command.
This option will completely disable user namespace mapping for the container's user.
@@ -1089,71 +1086,71 @@ This is a full example of the allowed configuration options on Linux:
```json
{
"authorization-plugins": [],
"dns": [],
"dns-opts": [],
"dns-search": [],
"exec-opts": [],
"exec-root": "",
"storage-driver": "",
"storage-opts": [],
"labels": [],
"live-restore": true,
"log-driver": "",
"log-opts": {},
"mtu": 0,
"pidfile": "",
"graph": "",
"cluster-store": "",
"cluster-store-opts": {},
"cluster-advertise": "",
"max-concurrent-downloads": 3,
"max-concurrent-uploads": 5,
"debug": true,
"hosts": [],
"log-level": "",
"tls": true,
"tlsverify": true,
"tlscacert": "",
"tlscert": "",
"tlskey": "",
"swarm-default-advertise-addr": "",
"api-cors-header": "",
"selinux-enabled": false,
"userns-remap": "",
"group": "",
"cgroup-parent": "",
"default-ulimits": {},
"ipv6": false,
"iptables": false,
"ip-forward": false,
"ip-masq": false,
"userland-proxy": false,
"ip": "0.0.0.0",
"bridge": "",
"bip": "",
"fixed-cidr": "",
"fixed-cidr-v6": "",
"default-gateway": "",
"default-gateway-v6": "",
"icc": false,
"raw-logs": false,
"registry-mirrors": [],
"insecure-registries": [],
"disable-legacy-registry": false,
"default-runtime": "runc",
"oom-score-adjust": -500,
"runtimes": {
"runc": {
"path": "runc"
},
"custom": {
"path": "/usr/local/bin/my-runc-replacement",
"runtimeArgs": [
"--debug"
]
}
}
"api-cors-header": "",
"authorization-plugins": [],
"bip": "",
"bridge": "",
"cgroup-parent": "",
"cluster-store": "",
"cluster-store-opts": {},
"cluster-advertise": "",
"debug": true,
"default-gateway": "",
"default-gateway-v6": "",
"default-runtime": "runc",
"default-ulimits": {},
"disable-legacy-registry": false,
"dns": [],
"dns-opts": [],
"dns-search": [],
"exec-opts": [],
"exec-root": "",
"fixed-cidr": "",
"fixed-cidr-v6": "",
"graph": "",
"group": "",
"hosts": [],
"icc": false,
"insecure-registries": [],
"ip": "0.0.0.0",
"iptables": false,
"ipv6": false,
"ip-forward": false,
"ip-masq": false,
"labels": [],
"live-restore": true,
"log-driver": "",
"log-level": "",
"log-opts": {},
"max-concurrent-downloads": 3,
"max-concurrent-uploads": 5,
"mtu": 0,
"oom-score-adjust": -500,
"pidfile": "",
"raw-logs": false,
"registry-mirrors": [],
"runtimes": {
"runc": {
"path": "runc"
},
"custom": {
"path": "/usr/local/bin/my-runc-replacement",
"runtimeArgs": [
"--debug"
]
}
},
"selinux-enabled": false,
"storage-driver": "",
"storage-opts": [],
"swarm-default-advertise-addr": "",
"tls": true,
"tlscacert": "",
"tlscert": "",
"tlskey": "",
"tlsverify": true,
"userland-proxy": false,
"userns-remap": ""
}
```
@@ -1168,36 +1165,36 @@ This is a full example of the allowed configuration options on Windows:
```json
{
"authorization-plugins": [],
"bridge": "",
"cluster-advertise": "",
"cluster-store": "",
"debug": true,
"default-ulimits": {},
"disable-legacy-registry": false,
"dns": [],
"dns-opts": [],
"dns-search": [],
"exec-opts": [],
"storage-driver": "",
"storage-opts": [],
"fixed-cidr": "",
"graph": "",
"group": "",
"hosts": [],
"insecure-registries": [],
"labels": [],
"live-restore": true,
"log-driver": "",
"log-level": "",
"mtu": 0,
"pidfile": "",
"graph": "",
"cluster-store": "",
"cluster-advertise": "",
"debug": true,
"hosts": [],
"log-level": "",
"tlsverify": true,
"raw-logs": false,
"registry-mirrors": [],
"storage-driver": "",
"storage-opts": [],
"swarm-default-advertise-addr": "",
"tlscacert": "",
"tlscert": "",
"tlskey": "",
"swarm-default-advertise-addr": "",
"group": "",
"default-ulimits": {},
"bridge": "",
"fixed-cidr": "",
"raw-logs": false,
"registry-mirrors": [],
"insecure-registries": [],
"disable-legacy-registry": false
"tlsverify": true
}
```
@@ -1244,7 +1241,7 @@ previously configured cluster configurations.
This section describes how to run multiple Docker daemons on a single host. To
run multiple daemons, you must configure each daemon so that it does not
conflict with other daemons on the same host. You can set these options either
by providing them as flags, or by using a [daemon configuration file](#daemon-configuration-file).
by providing them as flags, or by using a [daemon configuration file](dockerd.md#daemon-configuration-file).
The following daemon options must be configured for each daemon: