document artifact downloading
This commit is contained in:
Alex Dadgar
parent
cbca7addb4
commit
40adf40549
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@ -27,12 +27,12 @@ var (
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"/lib": "/lib",
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"/lib32": "/lib32",
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"/lib64": "/lib64",
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"/run/resolvconf": "/run/resolvconf",
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"/sbin": "/sbin",
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"/usr/bin": "/usr/bin",
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"/usr/sbin": "/usr/sbin",
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"/usr/lib": "/usr/lib",
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"/usr/sbin": "/usr/sbin",
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"/usr/share": "/usr/share",
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"/run/resolvconf": "/run/resolvconf",
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}
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)
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@ -121,8 +121,10 @@ Example:
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```
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task "secretservice" {
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driver = "docker"
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config {
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image = "secret/service"
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auth {
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username = "dockerhub_user"
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password = "dockerhub_password"
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@ -194,6 +196,7 @@ task "redis" {
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config {
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image = "redis"
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port_map {
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redis = 6379
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}
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@ -20,17 +20,10 @@ scripts or other wrappers which provide higher level features.
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The `exec` driver supports the following configuration in the job spec:
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* `command` - The command to execute. Must be provided.
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* `artifact_source` – (Optional) Source location of an executable artifact. Must
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be accessible from the Nomad client. If you specify an `artifact_source` to be
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executed, you must reference it in the `command` as show in the examples below
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* `checksum` - (Optional) The checksum type and value for the `artifact_source`
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image. The format is `type:value`, where type is any of `md5`, `sha1`,
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`sha256`, or `sha512`, and the value is the computed checksum. If a checksum
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is supplied and does not match the downloaded artifact, the driver will fail
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to start
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* `command` - The command to execute. Must be provided. If executing a binary
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that exists on the host, the path must be absolute. If executing a binary that
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is download from an [`artifact`](/docs/jobspec/index.html#artifact_doc), the
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path can be relative from the allocations's root directory.
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* `args` - (Optional) A list of arguments to the optional `command`.
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References to environment variables or any [intepretable Nomad
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@ -41,6 +34,41 @@ The `exec` driver supports the following configuration in the job spec:
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args = ["${nomad.datacenter}", "${MY_ENV}", "${meta.foo}"]
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```
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## Examples
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To run a binary present on the Node:
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```
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task "example" {
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driver = "exec"
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config {
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# When running a binary that exists on the host, the path must be absolute
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command = "/bin/sleep"
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args = ["1"]
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}
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}
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```
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To execute a binary downloaded from an [`artifact`](/docs/jobspec/index.html#artifact_doc):
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```
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task "example" {
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driver = "exec"
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config {
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command = "binary.bin"
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}
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artifact {
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source = "https://dl.dropboxusercontent.com/u/1234/binary.bin"
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options {
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checksum = "sha256:abd123445ds4555555555"
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}
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}
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}
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```
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## Client Requirements
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The `exec` driver can only be run when on Linux and running Nomad as root.
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@ -48,34 +76,10 @@ The `exec` driver can only be run when on Linux and running Nomad as root.
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is only guaranteed on Linux. Further the host must have cgroups mounted properly
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in order for the driver to work.
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You must specify a `command` to be executed. Optionally you can specify an
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`artifact_source` to be downloaded as well. Any `command` is assumed to be present on the
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running client, or a downloaded artifact.
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If you are receiving the error `* Constraint "missing drivers" filtered <> nodes`
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and using the exec driver, check to ensure that you are running Nomad as root. This
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also applies for running Nomad in -dev mode.
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## Examples
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To run a binary present on the Node:
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```
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config {
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command = "/bin/sleep"
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args = 1
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}
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```
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To execute a binary specified by `artifact_source`:
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```
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config {
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artifact_source = "https://dl.dropboxusercontent.com/u/1234/binary.bin"
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checksum = "sha256:abd123445ds4555555555"
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command = "binary.bin"
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}
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```
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## Client Attributes
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@ -96,4 +100,5 @@ resources of a process and as such the Nomad agent must be run as root.
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The chroot is populated with data in the following folders from the host
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machine:
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`["/bin", "/etc", "/lib", "/lib32", "/lib64", "/usr/bin", "/usr/lib", "/usr/share"]`
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`["/bin", "/etc", "/lib", "/lib32", "/lib64", "/run/resolvconf", "/sbin",
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"/usr/bin", "/usr/lib", "/usr/sbin", "/usr/share"]`
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@ -10,22 +10,18 @@ description: |-
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Name: `java`
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The `Java` driver is used to execute Java applications packaged into a Java Jar
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file. The driver currently requires the Jar file be accessible via
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HTTP from the Nomad client.
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The `Java` driver is used to execute Java applications packaged into a Java Jar
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file. The driver requires the Jar file to be accessible from the Nomad
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client via the [`artifact` downloader](/docs/jobspec/index.html#artifact_doc).
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## Task Configuration
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The `java` driver supports the following configuration in the job spec:
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* `artifact_source` - The hosted location of the source Jar file. Must be
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accessible from the Nomad client
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* `checksum` - (Optional) The checksum type and value for the `artifact_source`
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image. The format is `type:value`, where type is any of `md5`, `sha1`,
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`sha256`, or `sha512`, and the value is the computed checksum. If a checksum
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is supplied and does not match the downloaded artifact, the driver will fail
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to start
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* `jar_path` - The path to the downloaded Jar. In most cases this will just be
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the name of the Jar. However, if the supplied artifact is an archive that
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contains the Jar in a subfolder, the path will need to be the relative path
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(`subdir/from_archive/my.jar`).
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* `args` - (Optional) A list of arguments to the optional `command`.
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References to environment variables or any [intepretable Nomad
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@ -39,30 +35,36 @@ The `java` driver supports the following configuration in the job spec:
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* `jvm_options` - (Optional) A list of JVM options to be passed while invoking
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java. These options are passed not validated in any way in Nomad.
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## Client Requirements
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The `java` driver requires Java to be installed and in your systems `$PATH`.
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The `artifact_source` must be accessible by the node running Nomad. This can be an
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internal source, private to your cluster, but it must be reachable by the client
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over HTTP.
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## Examples
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A simple config block to run a Java Jar:
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```json
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# Define a task to run
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```
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task "web" {
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# Run a Java Jar
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driver = "java"
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config {
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artifact_source = "https://dl.dropboxusercontent.com/u/1234/hello.jar"
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checksum = "md5:123445555555555"
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jar_path = "hello.jar"
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jvm_options = "-Xmx2048m -Xms256m"
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}
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# Specifying an artifact is required with the "java"
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# driver. This is the # mechanism to ship the Jar to be run.
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artifact {
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source = "https://dl.dropboxusercontent.com/u/1234/hello.jar"
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options {
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checksum = "md5:123445555555555"
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}
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}
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```
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## Client Requirements
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The `java` driver requires Java to be installed and in your systems `$PATH`. The
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task must also specify at least one artifact to download as this is the only way
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to retrieve the Jar being run.
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## Client Attributes
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The `java` driver will set the following client attributes:
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@ -19,17 +19,17 @@ resource allocation.
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The `Qemu` driver can execute any regular `qemu` image (e.g. `qcow`, `img`,
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`iso`), and is currently invoked with `qemu-system-x86_64`.
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The driver requires the image to be accessible from the Nomad client via the
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[`artifact` downloader](/docs/jobspec/index.html#artifact_doc).
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## Task Configuration
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The `Qemu` driver supports the following configuration in the job spec:
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* `artifact_source` - The hosted location of the source Qemu image. Must be accessible
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from the Nomad client, via HTTP.
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* `checksum` - (Optional) The checksum type and value for the `artifact_source` image.
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The format is `type:value`, where type is any of `md5`, `sha1`, `sha256`, or `sha512`,
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and the value is the computed checksum. If a checksum is supplied and does not
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match the downloaded artifact, the driver will fail to start
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* `image_path` - The path to the downloaded image. In most cases this will just be
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the name of the image. However, if the supplied artifact is an archive that
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contains the image in a subfolder, the path will need to be the relative path
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(`subdir/from_archive/my.img`).
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* `accelerator` - (Optional) The type of accelerator to use in the invocation.
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If the host machine has `Qemu` installed with KVM support, users can specify
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@ -40,12 +40,35 @@ The `Qemu` driver supports the following configuration in the job spec:
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`port_map { db = 6539 }` would forward the host port with label `db` to the
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guest vm's port 6539.
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## Examples
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A simple config block to run a `Qemu` image:
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```
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task "virtual" {
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driver = "qemu"
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config {
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image_path = "linux.img"
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accelerator = "kvm"
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}
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# Specifying an artifact is required with the "qemu"
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# driver. This is the # mechanism to ship the image to be run.
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artifact {
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source = "https://dl.dropboxusercontent.com/u/1234/linux.img"
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options {
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checksum = "md5:123445555555555"
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}
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}
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```
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## Client Requirements
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The `Qemu` driver requires Qemu to be installed and in your system's `$PATH`.
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The `artifact_source` must be accessible by the node running Nomad. This can be an
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internal source, private to your cluster, but it must be reachable by the client
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over HTTP.
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The task must also specify at least one artifact to download as this is the only
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way to retrieve the image being run.
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## Client Attributes
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@ -18,17 +18,10 @@ As such, it should be used with extreme care and is disabled by default.
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The `raw_exec` driver supports the following configuration in the job spec:
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* `command` - The command to execute. Must be provided.
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* `artifact_source` – (Optional) Source location of an executable artifact. Must
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be accessible from the Nomad client. If you specify an `artifact_source` to be
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executed, you must reference it in the `command` as show in the examples below
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* `checksum` - (Optional) The checksum type and value for the `artifact_source`
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image. The format is `type:value`, where type is any of `md5`, `sha1`,
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`sha256`, or `sha512`, and the value is the computed checksum. If a checksum
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is supplied and does not match the downloaded artifact, the driver will fail
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to start
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* `command` - The command to execute. Must be provided. If executing a binary
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that exists on the host, the path must be absolute. If executing a binary that
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is download from an [`artifact`](/docs/jobspec/index.html#artifact_doc), the
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path can be relative from the allocations's root directory.
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* `args` - (Optional) A list of arguments to the optional `command`.
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References to environment variables or any [intepretable Nomad
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@ -39,6 +32,41 @@ The `raw_exec` driver supports the following configuration in the job spec:
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args = ["${nomad.datacenter}", "${MY_ENV}", "${meta.foo}"]
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```
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## Examples
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To run a binary present on the Node:
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```
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task "example" {
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driver = "raw_exec"
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config {
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# When running a binary that exists on the host, the path must be absolute
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command = "/bin/sleep"
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args = ["1"]
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}
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}
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```
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To execute a binary downloaded from an [`artifact`](/docs/jobspec/index.html#artifact_doc):
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```
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task "example" {
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driver = "raw_exec"
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config {
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command = "binary.bin"
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}
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artifact {
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source = "https://dl.dropboxusercontent.com/u/1234/binary.bin"
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options {
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checksum = "sha256:abd123445ds4555555555"
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}
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}
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}
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```
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## Client Requirements
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The `raw_exec` driver can run on all supported operating systems. It is however
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@ -54,31 +82,6 @@ explicitly enable the `raw_exec` driver in the client's
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}
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```
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You must specify a `command` to be executed. Optionally you can specify an
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`artifact_source` to be executed. Any `command` is assumed to be present on the
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running client, or a downloaded artifact
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## Examples
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To run a binary present on the Node:
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```
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config {
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command = "/bin/sleep"
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args = 1
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}
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```
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To execute a binary specified by `artifact_source`:
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```
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config {
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artifact_source = "https://dl.dropboxusercontent.com/u/1234/binary.bin"
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checksum = "sha256:133jifjiofu9090fsadjofsdjlk"
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command = "binary.bin"
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}
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```
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## Client Attributes
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The `raw_exec` driver will set the following client attributes:
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|
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@ -411,6 +411,8 @@ would be required for the task would be 60MB.
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### Artifact
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<a id="artifact_doc"></a>
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Nomad downloads artifacts using
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[`go-getter`](https://github.com/hashicorp/go-getter). The `go-getter` library
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allows downloading of artifacts from various sources using a URL as the input
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@ -443,6 +445,20 @@ options {
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}
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```
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An example of downloading and unzipping an archive is as simple as:
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```
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artifact {
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# The archive will be extracted before the task is run, making
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# it easy to ship configurations with your binary.
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source = "https://example.com/my.zip"
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options {
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checksum = "md5:7f4b3e3b4dd5150d4e5aaaa5efada4c3"
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}
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}
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```
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## JSON Syntax
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Job files can also be specified in JSON. The conversion is straightforward
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|
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|
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@ -15,6 +15,14 @@ details provided for their upgrades as a result of new features or changed
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behavior. This page is used to document those details separately from the
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standard upgrade flow.
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## Nomad 0.3.1
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Nomad 0.3.1 removes artifact downloading from driver configs and places them as
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a first class element of the task. As such, jobs will have to be rewritten in
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the proper format and resubmitted to Nomad. Nomad clients will properly
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re-attach to existing tasks but job definitions must be updated before they can
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be dispatched to clients running 0.3.1.
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## Nomad 0.3.0
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Nomad 0.3.0 has made several substantial changes to job files included a new
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|
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Loading…
Reference in New Issue