Highly experimental and in development
Tool to build RKT ACI and POD in a mixup of Chef, Dockerfile and Packer logic
File templating will be resolved on container start using confd in env mode
$ cnt build # build the image
$ cnt clean # clean the build
$ cnt install # store target image to rkt local store
$ cnt push # push target image to remote storage
$ cnt init # create the filetreecnt global conf is a yaml file located at
- windows > $HOME + "/AppData/Local/Cnt/config.yml";
- darwin > $HOME + "/Library/Cnt/config.yml";
- linux > $HOME + "/.config/cnt/config.yml";
with content :
push:
type: maven
url: https://localhost/nexus
username: admin
password: admin #Standard FileTree for ACI
├── attributes
│ └── attributes.yml # Attributes file for confd
├── confd
│ ├── conf.d
│ │ └── config.toml # Confd template resource config
│ └── templates
│ └── config.tmpl # Confd source template
├── cnt-manifest.yml # Manifest
├── files # Everything under this folder will be copied verbatim in the target rootfs.
│ └── usr
├── runlevels
│ ├── prestart-early # Scripts to be run when starting ACI before confd templating
│ │ └── 10.mkdir.sh
│ ├── prestart-late # Scripts to be run when starting ACI after confd templating
│ │ └── 10.fetch.sh
│ ├── build-setup # Scripts to be run directly on source host before building
│ │ └── 10.prepare-rootfs.sh
│ ├── build # Scripts to be run when building
│ │ └── 10.install-stuff.sh
│ ├── inherit-build-early # Scripts stored in ACI and used when building from this image
│ │ └── 00.apt-get-update.sh
│ └── inherit-build-late
│ └── 99.purge.sh
#The cnt manifest look like
from: aci.test.com/aci-base:5
name: aci.test.com/aci-elasticsearch:1
aci:
app:
eventHandlers:
- { name: pre-start, exec: [ "/usr/local/bin/prestart" ] }
exec: [
"/usr/share/elasticsearch/bin/elasticsearch",
"-p", "/var/run/elasticsearch.pid",
"-Des.default.config=/etc/elasticsearch/elasticsearch.yml",
"-Des.default.path.home=/usr/share/elasticsearch",
"-Des.default.path.logs=/var/log/elasticsearch",
"-Des.default.path.data=/var/lib/elasticsearch",
"-Des.default.path.work=/tmp/elasticsearch",
"-Des.default.path.conf=/etc/elasticsearch"
]
mountPoints:
- {name: es-data, path: /var/lib/elasticsearch, readOnly: false}
- {name: es-log, path: /var/log/elasticsearch, readOnly: false}
dependencies:
- aci.test.com/aci-php:0.2#Standard FileTree for POD
├── aci-elasticsearch # Directory that match the pod app shortname (or name)
│ ├── attributes
│ │ └── attributes.yml # Attributes file for confd in this ACI
│ ├── files # Files to be inserted into this ACI
│ ...
├── cnt-pod-manifest.yml # Pod Manifest