RunX: tech preview

etomm

@ronan-a I could make it start again doing a yum update.

Then I think I did an error, because I tried to run the following line:

yum remove --enablerepo=epel -y qemu-dp xenopsd xenopsd-cli xenopsd-xc xcp-ng-xapi-storage runx

This killed my xapi.service. Not starting anymore. If you will tell me how to find the log I can give to you the trace

ronan-a

@etomm Why this yum remove command? You just deleted what allows to manage VMs. You can try to reinstall the packages using yum install.

etomm

@ronan-a I was in the bad assumptions that all the things that has been installed in this guide where new packages for RunX.

So when it began to give problems I went for the remove option. My bad!

Everything popped out from the fact that after that I could make the vms start again updating the packages as soon as I was starting the dockerd I was loosing connectivity in the host.

So I wanted to remove it.

jmccoy555

Been interested in this since the first blog post but never got round to trying it. Is this still a 'thing'? I'm having little luck trying to get it work and am seeing most of the errors already posted, and have tried the fixes but still no luck. I would guess I may have a template issue.......

Mainly wondering if its worth some effort or if its best to just run docker in a VM?

Thanks.

olivierlambert

Hello!

@ronan-a will guide you if you have problems on making it work

There's still some work needed to be a 100% feature complete product, in the meantime, if you want to go in production, go for the VM+container inside

jmccoy555

@olivierlambert ok, if its still planned to be a feature then I'm up for playing.... testing!!

@ronan-a is this the best way to get the template? The rest of the instructions look pretty simple to follow so I don't think I've got them wrong.....

xe vm-install template=Debian\ Buster\ 10 new-name-label=tempforrunx sr-uuid=7c5212f3-97b2-cdeb-b735-ad26638926e3 --minimal
this uuid is of the SR created by the step in the first post?

xe vm-param-set uuid=a2d46568-c9ab-7da2-57cb-d213ee9d8dfa HVM-boot-policy=""
uuid that is a result of the first step?

xe vm-param-set uuid=a2d46568-c9ab-7da2-57cb-d213ee9d8dfa PV-args=""
uuid that is a result of the first step?

xe vm-param-set VCPUs-max=2 uuid=14d91f2f-a103-da0e-51b3-21c8db307e5d
what is this uuid?

xe vm-param-set VCPUs-at-startup=2 uuid=14d91f2f-a103-da0e-51b3-21c8db307e5d
same again, where does this uuid come from?

xe vm-disk-remove device=0 uuid=cb5a6d67-07d5-b5ea-358a-7ee0d6e535af
and this one too?

xe template-param-set is-a-template=true uuid=a2d46568-c9ab-7da2-57cb-d213ee9d8dfa
uuid generated by the 1st step

Thanks.

ronan-a

@jmccoy555 said in RunX: tech preview:

this uuid is of the SR created by the step in the first post?

Right!

Regarding all xe vm-param-set/xe vm-disk-remove/xe template-param-set commands, you must use the VM UUID returned by the xe vm-install command. I edited the post regarding that.

jmccoy555

@ronan-a thanks (was obviously too late for me to think about trying that!!) but no luck

[18:36 bad-XCP-ng-Host-03 ~]# xe vm-install template=Debian\ Buster\ 10 new-name-label=RunX sr-uuid=cb817299-f3ee-9d4e-dd5d-9edad6e55ed0 --minimal
b3b5efcf-e810-57ab-5482-4dba14dda0a6
[18:37 bad-XCP-ng-Host-03 ~]# xe vm-param-set uuid=b3b5efcf-e810-57ab-5482-4dba14dda0a6 HVM-boot-policy=""
[18:38 bad-XCP-ng-Host-03 ~]# xe vm-param-set uuid=b3b5efcf-e810-57ab-5482-4dba14dda0a6 PV-args=""
[18:38 bad-XCP-ng-Host-03 ~]# xe vm-param-set uuid=b3b5efcf-e810-57ab-5482-4dba14dda0a6 VCPUs-max=2
[18:38 bad-XCP-ng-Host-03 ~]# xe vm-param-set uuid=b3b5efcf-e810-57ab-5482-4dba14dda0a6 VCPUs-at-startup=2
[18:39 bad-XCP-ng-Host-03 ~]# xe vm-disk-remove device=0 uuid=b3b5efcf-e810-57ab-5482-4dba14dda0a6
[18:39 bad-XCP-ng-Host-03 ~]# xe template-param-set is-a-template=true uuid=b3b5efcf-e810-57ab-5482-4dba14dda0a6
[18:41 bad-XCP-ng-Host-03 ~]# nano /etc/runx.conf
[18:43 bad-XCP-ng-Host-03 ~]# podman container create --name archlinux archlinux
0f72916b8cca6c7c4aa68e6ebee467c0480e29e22ebbd6ec666d8385826f88b8
[18:43 bad-XCP-ng-Host-03 ~]# podman start archlinux
The server failed to handle your request, due to an internal error. The given message may give details useful for debugging the problem.
message: xenopsd internal error: Could not find BlockDevice, File, or Nbd implementation: {"implementations":[["XenDisk",{"backend_type":"9pfs","extra":{},"params":"vdi:1e2e7b99-2ffe-4129-a468-96b57ab685de share_dir none ///root/runx-sr/2"}]]}
archlinux6
[18:44 bad-XCP-ng-Host-03 ~]# rpm -qa | grep xenops
xenopsd-xc-0.150.12-1.2.xcpng8.2.x86_64
xenopsd-cli-0.150.12-1.2.xcpng8.2.x86_64
xenopsd-0.150.12-1.2.xcpng8.2.x86_64

Not sure what I'm doing wrong now, or if I need an update??

When I created the SR I had to give a host-uuid. I obviously used the host that I'm installing on.

jmccoy555

if this helps....

yum install --enablerepo=epel -y qemu-dp xenopsd xenopsd-cli xenopsd-xc xcp-ng-xapi-storage runx
Loaded plugins: fastestmirror, product-id, search-disabled-repos, subscription-manager

This system is not registered with an entitlement server. You can use subscription-manager to register.

Loading mirror speeds from cached hostfile
 * centos-ceph-nautilus: mirror.as29550.net
 * centos-nfs-ganesha28: mirrors.vinters.com
 * epel: mirror.freethought-internet.co.uk
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-base: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-linstor: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-runx: mirrors.xcp-ng.org
Excluding mirror: updates.xcp-ng.org
 * xcp-ng-updates: mirrors.xcp-ng.org
Package 2:qemu-dp-2.12.0-2.0.5.xcpng8.2.x86_64 already installed and latest version
Package xenopsd-0.150.12-1.2.xcpng8.2.x86_64 already installed and latest version
Package xenopsd-cli-0.150.12-1.2.xcpng8.2.x86_64 already installed and latest version
Package xenopsd-xc-0.150.12-1.2.xcpng8.2.x86_64 already installed and latest version
Package xcp-ng-xapi-storage-1.0.2-3.0.0.runx.1.xcpng8.2.x86_64 already installed and latest version
Package runx-2021.1-1.0.0.runx.1.xcpng8.2.x86_64 already installed and latest version
Nothing to do

rjt

Please, Please, Please make this document itself with bash variables when it comes to the various UUIDs:

[XCP-ngHostX]# SRuuid=$(xe sr-list name-label="Local storage" --minimal)
[XCP-ngHostX]# RunXdebTemplateName="My RunX Template based on Deb10"
[XCP-ngHostX]# RUNXdebTEMPLATEuuid=$(xe vm-install template="Debian Buster 10" new-name-label="${RunXdebTemplateName}" sr-uuid=${SRuuid} --minimal)
[XCP-ngHostX]# echo ${RUNXdebTEMPLATEuuid}
[XCP-ngHostX]# xe vm-param-set uuid=${RUNXdebTEMPLATEuuid} HVM-boot-policy=""
[XCP-ngHostX]# xe vm-param-set uuid=${RUNXdebTEMPLATEuuid} PV-args=""
[XCP-ngHostX]# xe vm-param-set uuid=${RUNXdebTEMPLATEuuid} VCPUs-max=2
[XCP-ngHostX]# xe vm-param-set uuid=${RUNXdebTEMPLATEuuid} VCPUs-at-startup=2
[XCP-ngHostX]# xe vm-disk-remove device=0 uuid=${RUNXdebTEMPLATEuuid}
[XCP-ngHostX]# xe template-param-set is-a-template=true uuid=${RUNXdebTEMPLATEuuid}
[XCP-ngHostX]# xe template-list name-label="${RunXdebTemplateName}"
[XCP-ngHostX]# xe template-list uuid=${RUNXdebTEMPLATEuuid}

jchua

is this tech preview available on 8.3 alpha release?
any idea how can i set RunX on 8.3 release?

olivierlambert

Question for @stormi and/or @ronan-a

ronan-a

@jchua We currently don't have a test version planned for XCP-ng 8.3. Only 8.2 is supported for the moment.

Finallf

@ronan-a would it be too much to ask for a version for 8.3?
I'm testing the alpha since publication and I would like to be able to use RunX

ronan-a

@Finallf It's been a while since we've been actively working on this subject, that doesn't mean that this project is abandoned, but it's not our priority target.
Currently it is rather this project that we are trying to move forward: https://xen-orchestra.com/blog/announcing-project-pyrgos/

Sorry but it's not so soon that we will have a new runx update.

olivierlambert

Yes, and it's not impossible that RunX will be used in Pyrgos at some point

ricardogaspar2

@olivierlambert Is there any updates on the RunX and Pygros ?
Any tutorials one can find? Docs or other forum threads?
I'm currently running XCP-NG 8.3 beta for my homelab. I'm interested in having kubernetes or Docker runtime using RunX or Pygros.

Thanks in advance

olivierlambert

Pyrgos is working, you can already use it directly from your XOA. We are now working on doing lifecycle improvements (like updating a cluster) as a next feature for Q1.

RunX is a bit different, it's still a test thing, for now we consider Pyrgos more important (delivering a k8s cluster in a turnkey fashion).

mavoff

just a personal opinion I'm leaving here, no follow-up needed.

If I want to run containers I use OKD.
I've always seen all the comments about keeping the dom0 controller to a minimum, docker alone adds a 2GB overhead to it, no more problems in adding stuff to it.