├── .gitignore ├── Dockerfile ├── LICENSE ├── README.md ├── contrib └── vocker-job ├── examples ├── Dockerfile.http └── Dockerfile.simple ├── manifests ├── vocker-builder-wo-presets.yaml └── vocker-builder.yaml ├── requirements-dev.txt ├── requirements.txt ├── setup.cfg ├── setup.py └── vocker.py /.gitignore: -------------------------------------------------------------------------------- 1 | .eggs/ 2 | __pycache__/ 3 | build/ 4 | dist/ 5 | vocker.egg-info/ 6 | *.pyc 7 | -------------------------------------------------------------------------------- /Dockerfile: -------------------------------------------------------------------------------- 1 | FROM fedora:26 2 | 3 | 4 | RUN dnf install -y python3-pip qemu-img libguestfs-tools-c virt-install 5 | RUN curl -L http://download.libguestfs.org/binaries/appliance/appliance-1.36.1.tar.xz | tar -C /usr/lib64/guestfs -xJf - 6 | 7 | ADD . /vocker.d/ 8 | 9 | RUN cd /vocker.d && pip3 install -rrequirements.txt && python3 setup.py install 10 | 11 | ENV LIBGUESTFS_BACKEND=direct 12 | ENV LIBGUESTFS_PATH=/usr/lib64/guestfs/appliance 13 | CMD cd /vocker.d/contrib/ && bash -x vocker-job 14 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | [![Docker Repository on Quay](https://quay.io/repository/fabiand/vocker/status "Docker Repository on Quay")](https://quay.io/repository/fabiand/vocker) 2 | 3 | vocker - Create VMs not containers 4 | ================================== 5 | 6 | vocker can read Dockerfiles (currently just a subset), and does 7 | build VM images from them. 8 | 9 | Instead of using the docker registry for base images, `virt-builder` 10 | images can be used as `FROM` sources. 11 | 12 | vocker is building the images incerementally, for each command. 13 | It caches the images, which makes it fast. 14 | 15 | > Note: This is WIP. Not all features are supported (yet). 16 | 17 | A quick demo: 18 | 19 | [![asciicast](https://asciinema.org/a/091pvgwprx0fa5oosr4jcu9am.png)](https://asciinema.org/a/091pvgwprx0fa5oosr4jcu9am) 20 | 21 | With more details: 22 | 23 | [![asciicast](https://asciinema.org/a/eg1ccvapczlg6k2tql7kt4xru.png)](https://asciinema.org/a/eg1ccvapczlg6k2tql7kt4xru) 24 | 25 | 26 | Installation 27 | ------------ 28 | 29 | ```bash 30 | $ pip install -rrequirements.txt 31 | $ yum install virt-install 32 | $ python setup.py install 33 | ``` 34 | 35 | Usage 36 | ----- 37 | 38 | The usage should look familiar: 39 | 40 | ```bash 41 | $ vocker build --tag simple -f examples/Dockerfile.simple 42 | $ vocker run simple 43 | fast_fedora 44 | $ vocker attach fast_fedora 45 | 46 | # Export an image 47 | $ vocker export simple -f simple.raw 48 | ``` 49 | 50 | Kubernetes Vocker Builder Usage 51 | ------------------------------- 52 | 53 | In addition to the stock vocker tool, there is also a container and manifest 54 | to run vocker as a builder inside a Kubernetes cluster. 55 | 56 | The use-case is to use vocker, to build an VM image "onto" a block PV. 57 | The job definition is kept in the `manifests/` directory. 58 | 59 | In order to build a specific image, a vockerfile was to be written into the 60 | `vocker-job-source` ConfigMap. 61 | The ConfigMap is mapping a key to a vockerfile. The key will be used as the 62 | resulting image filename, which will be written on to the target PV, which is 63 | also defined in the Job definition. 64 | 65 | In order to build you custom images, you need to complete the following steps: 66 | 67 | 1. Add entry to ConfigMap 68 | 2. Adjust Job to point to the PV to be populated 69 | 3. Run job to generate images 70 | 71 | 72 | An example ConfigMap (the name is relevant): 73 | 74 | ```yaml 75 | apiVersion: v1 76 | kind: ConfigMap 77 | metadata: 78 | name: vocker-job-source 79 | data: 80 | Fedora: | 81 | FROM fedora:26 82 | 83 | MAINTAINER "Fabian Deutsch" 84 | ENV container docker 85 | 86 | RUN echo Hello > /marker 87 | 88 | EXPOSE 1234 89 | 90 | CMD echo World >> /marker 91 | 92 | Ubuntu: | 93 | FROM ubuntu-16.04 94 | ``` 95 | 96 | This ConfigMap would build two images `Fedora` and `Ubuntu`. 97 | 98 | The usage then looks like: 99 | 100 | ```bash 101 | $ kubectl apply -f manifests/vocker-builder-wo-presets.yaml 102 | $ kubectl describe job vocker-builder 103 | Name: vocker-builder 104 | Namespace: default 105 | Selector: controller-uid=ea99dbe6-fa05-11e7-a917-48b8902b170b 106 | Labels: controller-uid=ea99dbe6-fa05-11e7-a917-48b8902b170b 107 | job-name=vocker-builder 108 | role=vocker-job 109 | Annotations: ... 110 | Parallelism: 1 111 | Completions: 1 112 | Start Time: Mon, 15 Jan 2018 16:08:17 +0100 113 | Pods Statuses: 0 Running / 1 Succeeded / 0 Failed 114 | Pod Template: 115 | Labels: controller-uid=ea99dbe6-fa05-11e7-a917-48b8902b170b 116 | job-name=vocker-builder 117 | role=vocker-job 118 | Containers: 119 | vocker: 120 | Image: quay.io/fabiand/vocker 121 | Port: 122 | Environment: 123 | Mounts: 124 | /source from vocker-source (rw) 125 | /target from vocker-target (rw) 126 | Volumes: 127 | vocker-source: 128 | Type: ConfigMap (a volume populated by a ConfigMap) 129 | Name: vocker-job-source 130 | Optional: false 131 | vocker-target: 132 | Type: EmptyDir (a temporary directory that shares a pod's lifetime) 133 | Medium: 134 | Events: 135 | Type Reason Age From Message 136 | ---- ------ ---- ---- ------- 137 | Normal SuccessfulCreate 40m job-controller Created pod: vocker-builder-xkckj 138 | 139 | ``` 140 | 141 | Once the pod has completed it's work, the image is ready on the PV. 142 | 143 | Hacking 144 | ------- 145 | 146 | When in the source folder: 147 | 148 | ```bash 149 | $ pip install -rrequirements-dev.txt 150 | ``` 151 | 152 | to install the dependencies. 153 | 154 | ```bash 155 | $ python setup.py test 156 | ``` 157 | 158 | to run the tests. 159 | 160 | 161 | ```bash 162 | $ python vocker.py --help 163 | ``` 164 | 165 | to run your local developer version. 166 | 167 | Why? 168 | ---- 169 | 170 | I think it's a nice approach to have a declarative approach 171 | for creating VMs. 172 | 173 | Tips 174 | ---- 175 | 176 | ### Setting the root password 177 | 178 | By default a random root password is chosen. If you have to set the password 179 | during build time you can add the build instruction 180 | 181 | ``` 182 | RUN echo "mypass" | passwd --stdin 183 | ``` 184 | -------------------------------------------------------------------------------- /contrib/vocker-job: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | 3 | set -e 4 | 5 | IMAGES=~/.cache/vocker/images 6 | 7 | SRC=$(realpath ${1:-/source}) 8 | DST=$(realpath ${2:-/target}) 9 | VOCKER=${VOCKER:-vocker} 10 | 11 | mkdir -p $SRC $DST 12 | 13 | for SRCF in $(ls -f $SRC/*); 14 | do 15 | TAG=$(basename $SRCF) 16 | echo Building $TAG 17 | ${VOCKER:-vocker} --debug build --tag $TAG --file "$SRCF" 18 | 19 | echo Exporting $TAG to raw file 20 | ${VOCKER} export -f "$DST/$TAG.raw" $TAG 21 | done 22 | 23 | ls -shal $DST 24 | -------------------------------------------------------------------------------- /examples/Dockerfile.http: -------------------------------------------------------------------------------- 1 | FROM fedora:23 2 | 3 | MAINTAINER "Roman Mohr" 4 | 5 | ENV HELLO="Hello World" 6 | 7 | RUN pip3 install --no-cache-dir static3 8 | 9 | RUN mkdir -p /html && echo "$HELLO" > /html/index.html 10 | 11 | EXPOSE 8080 12 | 13 | CMD /usr/bin/static /html 0.0.0.0:8080 14 | -------------------------------------------------------------------------------- /examples/Dockerfile.simple: -------------------------------------------------------------------------------- 1 | FROM fedora:23 2 | 3 | MAINTAINER "Fabian Deutsch" 4 | ENV container docker 5 | 6 | RUN echo Hello > /marker 7 | 8 | EXPOSE 1234 9 | 10 | CMD echo World >> /marker 11 | -------------------------------------------------------------------------------- /manifests/vocker-builder-wo-presets.yaml: -------------------------------------------------------------------------------- 1 | apiVersion: v1 2 | kind: ConfigMap 3 | metadata: 4 | name: vocker-job-source 5 | data: 6 | Fedora: | 7 | FROM fedora:23 8 | 9 | MAINTAINER "Fabian Deutsch" 10 | ENV container docker 11 | 12 | RUN echo Hello > /marker 13 | 14 | EXPOSE 1234 15 | 16 | CMD echo World >> /marker 17 | --- 18 | apiVersion: batch/v1 19 | kind: Job 20 | metadata: 21 | name: vocker-builder 22 | spec: 23 | template: 24 | metadata: 25 | labels: 26 | role: vocker-job 27 | spec: 28 | restartPolicy: Never 29 | containers: 30 | - name: vocker 31 | image: quay.io/fabiand/vocker 32 | volumeMounts: 33 | - name: vocker-source 34 | mountPath: /source 35 | - name: vocker-target 36 | mountPath: /target 37 | volumes: 38 | - name: vocker-source 39 | configMap: 40 | name: vocker-job-source 41 | - name: vocker-target 42 | emptyDir: {} 43 | backoffLimit: 4 44 | -------------------------------------------------------------------------------- /manifests/vocker-builder.yaml: -------------------------------------------------------------------------------- 1 | apiVersion: settings.k8s.io/v1alpha1 2 | kind: PodPreset 3 | metadata: 4 | name: vocker-builder-mounts 5 | spec: 6 | selector: 7 | matchLabels: 8 | role: vocker-job 9 | volumeMounts: 10 | - name: vocker-source 11 | mountPath: /source 12 | - name: vocker-target 13 | mountPath: /target 14 | volumes: 15 | - name: vocker-source 16 | configMap: 17 | name: vocker-job-source 18 | - name: vocker-target 19 | emptyDir: {} 20 | # persistentVolumeClaim: 21 | # claimName: vocker-images 22 | # - name: cache # would be an improvement 23 | --- 24 | apiVersion: v1 25 | kind: ConfigMap 26 | metadata: 27 | name: vocker-job-source 28 | data: 29 | Fedora: | 30 | FROM fedora:23 31 | 32 | MAINTAINER "Fabian Deutsch" 33 | ENV container docker 34 | 35 | RUN echo Hello > /marker 36 | 37 | EXPOSE 1234 38 | 39 | CMD echo World >> /marker 40 | --- 41 | apiVersion: batch/v1 42 | kind: Job 43 | metadata: 44 | name: vocker-builder 45 | spec: 46 | template: 47 | metadata: 48 | labels: 49 | role: vocker-job 50 | spec: 51 | restartPolicy: Never 52 | containers: 53 | - name: vocker 54 | image: quay.io/fabiand/vocker 55 | backoffLimit: 4 56 | -------------------------------------------------------------------------------- /requirements-dev.txt: -------------------------------------------------------------------------------- 1 | -rrequirements.txt 2 | pytest 3 | -------------------------------------------------------------------------------- /requirements.txt: -------------------------------------------------------------------------------- 1 | sh 2 | ipaddress 3 | -------------------------------------------------------------------------------- /setup.cfg: -------------------------------------------------------------------------------- 1 | [aliases] 2 | test=pytest 3 | -------------------------------------------------------------------------------- /setup.py: -------------------------------------------------------------------------------- 1 | from setuptools import setup 2 | 3 | 4 | setup(name='vocker', 5 | version='0.0.1', 6 | description='', 7 | long_description='', 8 | author='Fabian Deutsch, Roman Mohr', 9 | author_email='fdeutsch@redhat.com, rmohr@redhat.com', 10 | url='https://github.com/fabiand/vocker', 11 | license="GPLv3", 12 | py_modules=['vocker'], 13 | setup_requires=['pytest-runner'], 14 | tests_require=['pytest', 'pytest-cov'], 15 | entry_points=""" 16 | [console_scripts] 17 | vocker=vocker:run 18 | """) 19 | -------------------------------------------------------------------------------- /vocker.py: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env python3 2 | 3 | import sys 4 | import sh 5 | import os 6 | import hashlib 7 | import logging 8 | import argparse 9 | import random 10 | import tempfile 11 | import ipaddress 12 | import errno 13 | import xml.etree.ElementTree as ET 14 | 15 | 16 | logging.basicConfig(level=logging.INFO, format="[%(levelname)s] %(message)s") 17 | log = logging.getLogger() 18 | 19 | 20 | BASE = os.path.expanduser("~/.cache/vocker/") 21 | IMAGES_DIR = BASE + "images/" 22 | 23 | 24 | builder = sh.virt_builder.bake() 25 | qemu_img = sh.qemu_img.bake() 26 | fish = sh.guestfish.bake("--network", "-ia") 27 | virt_install = sh.virt_install 28 | 29 | 30 | def namegen(): 31 | attr = ["fancy", "strong", "crazy", "atomic", "friendly", "thoughtful", "mindful", "bar", "peaceful"] 32 | nom = ["star", "tree", "grass", "einstein", "unicorn", "foo", "planet", "stone", "grape", "fedora"] 33 | 34 | random.shuffle(attr) 35 | random.shuffle(nom) 36 | 37 | return "%s_%s" % (attr.pop(), nom.pop()) 38 | 39 | 40 | def subnetgen(): 41 | # TODO come up with something real 42 | return "10.%d.%d.0/24" % (random.randint(0, 255), random.randint(0, 255)) 43 | 44 | 45 | def md5sum(txt): 46 | m = hashlib.md5() 47 | m.update(txt.encode("utf-8")) 48 | return str(m.hexdigest()) 49 | 50 | 51 | class Layer(): 52 | parent = None 53 | name = None 54 | 55 | @property 56 | def filename(self): 57 | return IMAGES_DIR + self.name 58 | 59 | def __str__(self): 60 | return "" % self.name 61 | 62 | def derived_name(self, op): 63 | return str(md5sum("%s+%s" % (self.name, op))) 64 | 65 | def derive_for_op(self, op): 66 | return self.derive(self.derived_name(op)) 67 | 68 | def derive(self, name): 69 | layer = Layer() 70 | layer.parent = self 71 | layer.name = name 72 | 73 | log.debug("Deriving layer %s from %s" % (layer, 74 | layer.parent)) 75 | 76 | return layer 77 | 78 | def create(self): 79 | log.debug("Creating layer %s from %s" % (self, 80 | self.parent)) 81 | 82 | qemu_img.create("-fqcow2", "-o", "backing_file=%s" % self.parent.filename, self.filename) 83 | 84 | def export(self, dstfn): 85 | qemu_img.convert("-Oraw", self.filename, dstfn) 86 | 87 | def exists(self): 88 | return self.filename and os.path.exists(self.filename) 89 | 90 | 91 | class Operation(): 92 | cmd = None 93 | args = None 94 | 95 | def __init__(self, args): 96 | self.args = args 97 | 98 | def apply(self, layer): 99 | raise NotImplementedError 100 | 101 | def __str__(self): 102 | return "%s(%r)" % (self.cmd, self.args) 103 | 104 | def __repr__(self): 105 | return "<%s 0x%x />" % (self, id(self)) 106 | 107 | 108 | class FromOperation(Operation): 109 | cmd = "FROM" 110 | 111 | def _guess_tmpl(self, args): 112 | # Works for i.e. fedora:23 113 | return args.replace(":", "-") 114 | 115 | def apply(self, layer): 116 | tmpl = self._guess_tmpl(self.args) 117 | layer.name = tmpl + ".qcow2" 118 | log.debug("Checking presence: %s" % layer.filename) 119 | if os.path.exists(layer.filename): 120 | log.debug("Reusing base %s" % layer) 121 | else: 122 | log.info("Fetching new base %s" % layer.name) 123 | builder("--format=qcow2", "-o", layer.filename, tmpl) 124 | log.debug("Created base %s" % layer) 125 | return layer 126 | 127 | 128 | class RunOperation(Operation): 129 | cmd = "RUN" 130 | env = [] 131 | 132 | def apply(self, layer): 133 | env = " ".join(self.env) 134 | cmd = "export %s ; %s" % (env, self.args) 135 | 136 | log.debug("Run: %s" % cmd) 137 | 138 | fish(layer.filename, 139 | "sh", cmd) 140 | 141 | 142 | class CmdOperation(Operation): 143 | cmd = "CMD" 144 | env = [] 145 | 146 | def apply(self, layer): 147 | if self.args.startswith("["): 148 | log.warn("Not supporting CMD […], copying it anyway") 149 | 150 | env = ["export %s" % e for e in self.env if "=" in e] 151 | cmd = "#!/bin/bash\n\n%s\n\n%s" % ("\n".join(env), self.args) 152 | log.debug("rc.local: %s" % cmd) 153 | 154 | fish(layer.filename, 155 | "write", "/etc/rc.d/rc.local", cmd, 156 | ":", 157 | "sh", "chmod a+x /etc/rc.d/rc.local", 158 | ":", 159 | "sh", "sed -i '/^ExecStart=/ s/$/ --autologin root/' /usr/lib/systemd/system/getty@.service /usr/lib/systemd/system/serial-getty@.service", 160 | ":", 161 | "sh", "sed -i -e '/linux.*vmlinuz/ s/$/ quiet/' -e 's/timeout=[^ ]*/timeout=1/' /boot/grub2/grub.cfg", 162 | ":", 163 | "sh", "sed -i '/^SELINUX=/ s/=.*/=permissive/' /etc/sysconfig/selinux") 164 | 165 | 166 | class ExposeOperation(Operation): 167 | cmd = "EXPOSE" 168 | 169 | def apply(self, layer): 170 | if not self.args.isdigit(): 171 | log.error("Only supporting EXPOSE ignoring") 172 | return 173 | fish(layer.filename, 174 | "sh", "firewall-offline-cmd --add-port=%s/tcp" % self.args) 175 | 176 | 177 | class IgnoreOperation(Operation): 178 | def apply(self, layer): 179 | log.warn("Ignoring operation %s" % self.cmd) 180 | 181 | 182 | class MaintainerOperation(IgnoreOperation): 183 | cmd = "MAINTAINER" 184 | 185 | 186 | class EnvOperation(Operation): 187 | cmd = "ENV" 188 | 189 | def apply(self, layer): 190 | CmdOperation.env.append(self.args) 191 | RunOperation.env.append(self.args) 192 | 193 | 194 | class Context(): 195 | do_rebuild = False 196 | 197 | layers = None 198 | operations = None 199 | 200 | @property 201 | def layer(self): 202 | return self.layers[-1] if self.layers else None 203 | 204 | @layer.setter 205 | def layer_set(self, val): 206 | self.layers.append(val) 207 | 208 | def run(self, ops): 209 | for op in ops: 210 | self.apply(op) 211 | return self.layer 212 | 213 | def apply(self, op): 214 | log.debug("Applying to context %s: %s" % (self, op)) 215 | log.info(" %s" % op) 216 | 217 | if self.layers is None: 218 | log.debug("Initializing first image") 219 | self.layers = [] 220 | new_layer = Layer() 221 | op.apply(new_layer) 222 | else: 223 | new_layer = self.layer.derive_for_op(op) 224 | 225 | do_build = self.do_rebuild or not new_layer.exists() 226 | log.debug("Build layer: %s" % do_build) 227 | if do_build: 228 | new_layer.create() 229 | op.apply(new_layer) 230 | 231 | self.layers.append(new_layer) 232 | log.info(" -> %s" % new_layer) 233 | 234 | def tag(self, name): 235 | self.layer.derive(name).create() 236 | return name 237 | 238 | 239 | class OpParser(): 240 | known_ops = [ 241 | FromOperation, 242 | RunOperation, 243 | CmdOperation, 244 | MaintainerOperation, 245 | EnvOperation, 246 | ExposeOperation] 247 | 248 | def parse(self, data): 249 | known_ops_map = dict((op.cmd, op) for op in self.known_ops) 250 | parsed_ops = [] 251 | data = data.replace("\\\n", "") 252 | for line in data.splitlines(): 253 | line = line.strip() 254 | if not line or line.startswith("#"): 255 | continue 256 | log.debug("Parsing line: %s" % line) 257 | cmd, args = line.split(" ", 1) 258 | try: 259 | op = known_ops_map[cmd] 260 | parsed_ops.append(op(args)) 261 | except: 262 | log.exception("Unknown op: %s" % cmd) 263 | 264 | return parsed_ops 265 | 266 | 267 | def run(): 268 | def do_build(args): 269 | log.info("Building") 270 | 271 | p = OpParser() 272 | with open(args.file) as vockerfile: 273 | ops = p.parse(vockerfile.read()) 274 | 275 | log.debug(ops) 276 | 277 | ctx = Context() 278 | ctx.do_rebuild = args.force_rm 279 | log.debug(ctx.run(ops)) 280 | 281 | if args.tag: 282 | log.info("Tagging as %s" % args.tag) 283 | print(ctx.tag(args.tag)) 284 | 285 | def do_export(args): 286 | log.info("Exporting %s to %s", args.IMAGE, args.file) 287 | 288 | image = Layer() 289 | image.name = args.IMAGE 290 | image.export(args.file) 291 | 292 | def do_run(args): 293 | log.info("Instanciating %s as %s" % (args.IMAGE, args.name)) 294 | 295 | diskname = args.IMAGE + "-" + args.name 296 | image = Layer() 297 | image.name = args.IMAGE 298 | disk = image.derive(diskname) 299 | disk.create() 300 | if args.net != "user": 301 | args.net = "network=%s" % args.net 302 | 303 | # FIXME set the hostname inside the VM 304 | if args.hack_hostname: 305 | fish(disk.filename, "write", "/etc/hostname", args.name) 306 | 307 | xml = virt_install("--name", args.name, 308 | "--memory", args.memory, 309 | "--vcpus", "4", 310 | "--metadata", "description=vocker/%s" % args.name, 311 | "--import", 312 | "--disk", disk.filename, 313 | "--network", args.net, 314 | "--graphics", "spice", 315 | "--memballoon", "model=virtio", 316 | "--rng", "/dev/random", 317 | "--noautoconsole", 318 | "--print-xml") 319 | 320 | # Decode it right away 321 | xml = str(xml).encode("UTF-8") 322 | 323 | if args.publish: 324 | hostport, innerport = args.publish.split(":") 325 | 326 | def random_mac(): 327 | """Generate a random mac 328 | """ 329 | mac = [0x00, 0x16, 0x3e, 330 | random.randint(0x00, 0x7f), 331 | random.randint(0x00, 0xff), 332 | random.randint(0x00, 0xff)] 333 | return ':'.join(map(lambda x: "%02x" % x, mac)) 334 | 335 | domroot = ET.fromstring(xml) 336 | 337 | # Needed to make guest ssh port accessible from the outside 338 | # http://blog.vmsplice.net/2011/04/ 339 | # how-to-pass-qemu-command-line-options.html 340 | ET.register_namespace("qemu", "http://libvirt.org/" 341 | "schemas/domain/qemu/1.0") 342 | snippet = ET.fromstring(""" 343 | 345 | 346 | 347 | 348 | 349 | 350 | 351 | 352 | """.format(hostport=hostport, innerport=innerport, 353 | mac=random_mac())) 354 | domroot.append(snippet) 355 | 356 | xml = ET.tostring(domroot) 357 | 358 | with tempfile.NamedTemporaryFile("wb") as spec: 359 | spec.write(xml) 360 | spec.flush() 361 | sh.virsh("define", spec.name) 362 | sh.virsh("start", args.name) 363 | 364 | print(args.name) 365 | 366 | if args.i: 367 | _attach(args.name) 368 | 369 | if args.rm: 370 | _rm(args.name) 371 | 372 | def do_attach(args): 373 | _attach(args.NAME) 374 | 375 | def _attach(name): 376 | child_pid = os.fork() 377 | if child_pid == 0: 378 | os.execv("/usr/bin/virsh", ["/usr/bin/virsh", "console", name]) 379 | os.waitpid(child_pid, 0) 380 | 381 | def do_rm(args): 382 | _rm(args.NAME) 383 | 384 | def _rm(name): 385 | log.info("Removing %s" % name) 386 | try: 387 | sh.virsh("destroy", name) 388 | except: 389 | pass 390 | sh.virsh("undefine", name) 391 | 392 | def do_add_network(args): 393 | log.info("Adding network %s" % args.NAME) 394 | print(args.subnet.netmask) 395 | netmask = args.subnet.netmask 396 | network_ip = args.subnet.network_address 397 | broadcast_ip = args.subnet.broadcast_address 398 | 399 | def_string = """ 400 | 401 | %s 402 | 403 | 404 | 405 | 406 | 407 | 408 | 409 | """ % (args.NAME, 410 | args.NAME, 411 | network_ip + 1, 412 | netmask, 413 | network_ip + 2, 414 | broadcast_ip - 1) 415 | with tempfile.NamedTemporaryFile(delete=True) as net_def: 416 | net_def.write(def_string.encode()) 417 | net_def.flush() 418 | print(sh.virsh("net-create", net_def.name)) 419 | 420 | def do_rm_network(args): 421 | log.info("Removing network %s" % args.NAME) 422 | print(sh.virsh("net-destroy", args.NAME)) 423 | 424 | def do_list_networks(args): 425 | print(sh.virsh("net-list")) 426 | 427 | try: 428 | os.makedirs(IMAGES_DIR) 429 | except OSError as e: 430 | if e.errno != errno.EEXIST: 431 | log.error(e) 432 | exit(1) 433 | log.debug("Using images dir: %s" % IMAGES_DIR) 434 | 435 | argparser = argparse.ArgumentParser(description='Vocker!') 436 | 437 | argparser.add_argument("--debug", action="store_true") 438 | 439 | subparsers = argparser.add_subparsers() 440 | build = subparsers.add_parser("build", 441 | help="Build an image") 442 | build.add_argument("SOURCE", nargs="?", 443 | type=argparse.FileType('r'), 444 | default=sys.stdin) 445 | build.add_argument("--tag", "-t", nargs="?", 446 | help="Give the image a name") 447 | build.add_argument("--force-rm", action="store_true") 448 | build.add_argument("--file", "-f", default="Dockerfile") 449 | build.set_defaults(func=do_build) 450 | 451 | export = subparsers.add_parser("export", 452 | help="Export an image") 453 | export.add_argument("--file", "-f", nargs=1) 454 | export.add_argument("IMAGE") 455 | export.set_defaults(func=do_export) 456 | 457 | run = subparsers.add_parser("run", 458 | help="Create a VM from an image") 459 | run.add_argument("--name", default=namegen()) 460 | run.add_argument("--rm", action="store_true") 461 | run.add_argument("-i", action="store_true") 462 | run.add_argument("--net", default="user") 463 | run.add_argument("--publish", "-p", help="Publish a port (hostport:innerport)") 464 | run.add_argument("-t", action="store_true") 465 | run.add_argument("--hack-hostname", action="store_true", 466 | help="Hack: Slowing down run, but sets hostname") 467 | run.add_argument("--memory", "-m", default="1024", 468 | help="Amount of memory to allow") 469 | run.add_argument("IMAGE") 470 | run.set_defaults(func=do_run) 471 | 472 | attach = subparsers.add_parser("attach", 473 | help="Attach to a VM") 474 | attach.add_argument("NAME") 475 | attach.set_defaults(func=do_attach) 476 | 477 | rm = subparsers.add_parser("rm", 478 | help="Destroy a VM") 479 | rm.add_argument("NAME") 480 | rm.set_defaults(func=do_rm) 481 | 482 | network = subparsers.add_parser("network", 483 | help="Manage networks") 484 | 485 | network_subparsers = network.add_subparsers() 486 | add_network = network_subparsers.add_parser("add", 487 | help="Add a network") 488 | add_network.add_argument("NAME") 489 | add_network.add_argument("--subnet", default=subnetgen(), type=ipaddress.IPv4Network) 490 | add_network.set_defaults(func=do_add_network) 491 | rm_network = network_subparsers.add_parser("rm", 492 | help="Destroy a network") 493 | rm_network.add_argument("NAME") 494 | rm_network.set_defaults(func=do_rm_network) 495 | 496 | ls_network = network_subparsers.add_parser("ls", 497 | help="Show networks") 498 | ls_network.set_defaults(func=do_list_networks) 499 | 500 | args = argparser.parse_args() 501 | 502 | if args.debug: 503 | log.setLevel(logging.DEBUG) 504 | 505 | if "func" in args: 506 | args.func(args) 507 | 508 | if __name__ == "__main__": 509 | run() 510 | --------------------------------------------------------------------------------