Download as PDF, PPTX
![cloudops.com @cloudops_Page
Basic Usage of Cloud-Init
11
1. Create user “cloud-user”
2. password set to “cloud-user”
3. sshkey apply to root and “cloud-user”
4. enable sudo
/etc/cloud/cloud.cfg
system_info:
default_user:
name:
cloud-‐user
sudo:
["ALL=(ALL)
NOPASSWD:ALL"]
gecos:
Generic
cloud
user
Configuration thru YAML file](https://image.slidesharecdn.com/cloudopscloudstackdays-austin-150420161249-conversion-gate02/85/CloudOps-CloudStack-Days-Austin-April-2015-11-320.jpg)
![cloudops.com @cloudops_Page
CloudStack simulator on CoreOS
20
#cloud-config
coreos:
units:
- name: simulator.service
command: start
content: |
[Unit]
Description=Cloudstack Simulator
After=docker.service
Requires=docker.service
[Service]
TimeoutStartSec=0
ExecStartPre=-/usr/bin/docker kill cloudstack
ExecStartPre=-/usr/bin/docker rm cloudstack
ExecStartPre=/usr/bin/docker pull cloudstack/simulator
ExecStart=/usr/bin/docker run -d --name cloudstack -p 80:8080 cloudstack/simulator:4.5
[Install]
WantedBy=multi-user.target](https://image.slidesharecdn.com/cloudopscloudstackdays-austin-150420161249-conversion-gate02/85/CloudOps-CloudStack-Days-Austin-April-2015-20-320.jpg)
Uploaded byCloudOps2005
CloudOps CloudStack Days, Austin April 2015
Cloud-Init is a tool that initializes virtual machines on first boot. It retrieves metadata from CloudStack like SSH keys and VM details. User-data can be passed to Cloud-Init to run scripts or configure VMs like deploying RabbitMQ. There are some issues with CloudStack and Cloud-Init around password/key changes not being detected on reboot. Alternatives include custom init scripts.
More Related Content
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Similar to CloudOps CloudStack Days, Austin April 2015
CloudOps CloudStack Days, Austin April 2015
- 1. cloudops.com @cloudops_ Cloud-Init and CloudStack April16, 2015 Pierre-Luc Dion @pdion891 pdion891
- 2. cloudops.com @cloudops_ Introduction toCloud-Init What’s the current capability of it in CloudStack Some usage examples Agenda
- 3. cloudops.com @cloudops_ Let’s learnmore about us. About Us
- 4. cloudops.com @cloudops_Page About Us 4 “Since2005, CloudOps has enabled hundreds of enterprises and web- based companies to build their business in the cloud.” We provide private, public and hybrid cloud solutions for businesses seeking scalability and for enterprises making their move to the cloud. Our best-in-class cloud architecture allows companies to confidently, securely, and reliably achieve new levels of business performance.
- 5. cloudops.com @cloudops_Page About cloud.ca 5 “cloud.cais a self- service utility IaaS platform designed for applications, workspaces and data.” CloudOps operates cloud.ca a Canadian cloud service for businesses requiring that all or some of their data remain in Canada for reasons of complicance, performance, cost or privacy.
- 6. cloudops.com @cloudops_Page CloudMC 6 CloudMC isa multi- cloud services management and orchestration software that supports Apache CloudStack CloudOps has built its own proprietary cloud services “CloudMC” front end software for cloud service providers (used by cloud.ca) and enterprises looking to offer hybrid IaaS. It supports Apache Cloudstack based private clouds and public clouds, and we are building support for large utility clouds such as AWS.
- 7. cloudops.com @cloudops_ What isit? Cloud-Init
- 8. cloudops.com @cloudops_Page Cloud-Init 8 Collection oftools to initialize Virtual Machine at is first boot. ● Python based ● Started by Scott Moser ● Backed by Canonical ● Widely used by public cloud providers (AWS, Azure, rackspace) ● Provide easy access to meta-data exposed by the cloud provider
- 9. cloudops.com @cloudops_Page Operating SystemSupported 9 - CentOS / RHEL - Ubuntu - OpenSuse - Debian - CoreOS - Others?
- 10. cloudops.com @cloudops_Page Out ofthe Box 10 Per instance: • Generate new SSH server keys • Refresh /dev/urandom • Set hostname and domain • Disable ssh access from root (force close) • Configure “ubuntu” ssh access Your scripts: /var/lib/cloud/scripts /per-boot /per-instance /per-once
- 11. cloudops.com @cloudops_Page Basic Usageof Cloud-Init 11 1. Create user “cloud-user” 2. password set to “cloud-user” 3. sshkey apply to root and “cloud-user” 4. enable sudo /etc/cloud/cloud.cfg system_info: default_user: name: cloud-‐user sudo: ["ALL=(ALL) NOPASSWD:ALL"] gecos: Generic cloud user Configuration thru YAML file
- 12. cloudops.com @cloudops_Page bzr branch lp:cloud-‐init cd cloud-‐init cd packages ./bddeb -‐-‐init-‐system systemd -‐-‐python2 bzr branch lp:cloud-‐init cd cloud-‐init python setup.py build python setup.py install Quick and dirty 12 0.7.7 .deb package from the upstream
- 13. cloudops.com @cloudops_ And CloudStackin this story?
- 14. cloudops.com @cloudops_ What informationis retrieved?
- 15. cloudops.com @cloudops_Page meta-data fromVR 15 ● Random user password generated by CloudStack ● user SSH public key ● VM meta-data ● user-data: user define text meta-data: ● service-offering ● availability-zone ● local-ipv4 ● local-hostname ● public-ipv4 ● public-hostname ● instance-id Documentation ref: http://goo.gl/HzbKM7
- 16.
- 17. cloudops.com @cloudops_Page 17 user-datamethods GET POST ● base64 encoded string ● limited to 32KB string ● POST payload contain all params. ● base64 encoded string ● limited to 2KB string
- 18. cloudops.com @cloudops_ What canI do with user-data?
- 19. cloudops.com @cloudops_Page Deploy RabbitMQinto a Virtual-Machine 19 #cloud-‐config package: - rabbitmq-server runcmd: - echo "wait for rabbitmq-server to start" - sleep 10 - export HOME=/var/lib/rabbitmq - rabbitmq-plugins enable rabbitmq_management - service rabbitmq-server restart
- 20. cloudops.com @cloudops_Page CloudStack simulatoron CoreOS 20 #cloud-config coreos: units: - name: simulator.service command: start content: | [Unit] Description=Cloudstack Simulator After=docker.service Requires=docker.service [Service] TimeoutStartSec=0 ExecStartPre=-/usr/bin/docker kill cloudstack ExecStartPre=-/usr/bin/docker rm cloudstack ExecStartPre=/usr/bin/docker pull cloudstack/simulator ExecStart=/usr/bin/docker run -d --name cloudstack -p 80:8080 cloudstack/simulator:4.5 [Install] WantedBy=multi-user.target
- 21. cloudops.com @cloudops_Page user-data asbash script 21 #!/bin/bash yum upgrade -‐y shutdown -‐r now
- 22. cloudops.com @cloudops_Page http POST? 22 POST/client/api HTTP/1.1 Content-Type: application/x-www-form-urlencoded User-Agent: Jersey/2.13 (HttpUrlConnection 1.7.0_67) Cache-Control: no-cache Pragma: no-cache Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2 Connection: keep-alive Content-Length: 551 Host: coe-cs01-dev1.lab.local:8080 apiKey=WQJoN8bX05jrb5_1MOrfAAbCqF8Ym3IgPMTliQK142oGlnqHGx2mL49GFpPcTbEn7diSGYHSqv6R- zCLGELRsQ&command=deployVirtualMachine&name=i-orgadmin-E47&networkIds=4485b91d-c772-414a-a3dd- d973aebe841b&response=json&serviceofferingId=d2415ca3-9552-44c5-a097-0404c19dc513&templateId=4cdeea05- ae6e-49e8-8385-00502d29e55c&userdata=IyEvYmluL2Jhc2gKc3VkbyBzdSAtCnl1bSB1cGRhdGUKeXVtIGluc3RhbGwgbmdpb ngKc2VydmljZSBuZ2lueCBzdGFydA%3D%3D&zoneId=2c62ab1e-eef9-4aa3-8626-faf37d65c5ea&signature= %2BMc2GpfnP7Ie82BoVi6Bst/FA7w%3D
- 23. cloudops.com @cloudops_ Cloud-Init +CloudStack
- 24.
- 25. cloudops.com @cloudops_Page State ofthe Doc 25
- 26. cloudops.com @cloudops_Page Datasource: CloudStack 26 /etc/cloud/cloud.cfg.d/99_cloudstack.cfg datasource: CloudStack: {} None: {} datasource_list: -‐ CloudStack
- 27. cloudops.com @cloudops_Page deploy VMwith CloudMonkey 27 deploy virtualmachine keypair=user1 name=rabbit01 displayname=rabbitmq-‐server serviceofferingid=52814243-‐b91f-‐4514-‐ b556-‐37d7a3bebfb1 networkids=71080f3e-‐9a57-‐488a-‐b070-‐30155e2c8328 zoneid=c1509f9c-‐c230-‐4c6c-‐b2b4-‐303c59988553 templateid=e8582a77-‐9f76-‐4fe4-‐9af3-‐c3a8e9523687 userdata=I2Nsb3VkLWNvbmZpZw0KcGFja2FnZV91cGdyYWRlOiB0cnVlDQo= #cloud-‐config package_upgrade: true Base64 encoded string:
- 28. cloudops.com @cloudops_Page Useful testingtricks 28 CloudMonkey update virtualmachine id=afbc1c41-‐92a0-‐4b6f-‐b562-‐5e6d63e24721 userdata=I2Nsb3VkLWNvbmZpZw0KcGFja2FnZV91cGdyYWRlOiB0cnVlDQo= restore virtualmachine virtualmachineid=afbc1c41-‐92a0-‐4b6f-‐ b562-‐5e6d63e24721
- 29. cloudops.com @cloudops_Page Please loginas the user "cloud-user" rather than the user "root". 29 /etc/ssh/sshd_config Match User root ForceCommand cat /etc/issue.root ForceCommand exit SSH as root auto logout when using Password
- 30.
- 31. cloudops.com @cloudops_Page URL trailingslash 31 CLOUDSTACK-7405 ● Using cloudstack older than 4.4.1 require cloud-init 0.7.5+ ● Latest ACS ( 4.4.2+), older cloud- init work (0.6.5)
- 32. cloudops.com @cloudops_Page change SSHkeyfor VM user 32 resetSSHKeyForVirtualMachineCloudStack can change SSHkey on the VR, but not considered by cloud-init at reboot https://bugs.launchpad.net/cloud-init/+bug/1440265
- 33. cloudops.com @cloudops_Page change passwordfor VM user 33 resetPasswordForVirtualMachineCloudStack can reset password on the VR, but not considered by cloud-init at reboot https://bugs.launchpad.net/cloud-init/+bug/1440263 • Potential fix posted on 2015-04-15
- 34. cloudops.com @cloudops_Page Recent updates 34 ● Cloud-Init upstream support password. cloud-init-0.7.7 ○ resetPasswordForVirtualMachine still not working ● CloudStack documentation now include Cloud-Init ● Documentation Pull request submit to Cloud-Init upstream
- 35.
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- 37. cloudops.com @cloudops_Page References 37 ● openvm.eutemplates: http://www.openvm.eu/ ● Cloud-Init documentation: https://cloudinit.readthedocs.org/en/latest/ ● CloudStack documentation: goo.gl/HzbKM7 ● CoreOS: goo.gl/HktCJT
- 38.
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- 40.