Re: CloudStack Presented at Events

[Ivet Petrova]

Hi all,

Firstly I would like to thank to everyone who attended the Cloudstack 
Collaboration Conference in Sofia, Bulgaria last week. You made a great event 
and cannot wait to see you all again soon.

I am writing just to confirm that:
- I submitted the form for a stand at Fossdem
- our community confirmed the participation at CloudFest 2023

We still look for some funding for the CloudFest, so if there is a company 
which would like to help, it will be great.

Kind regards,


 

On 4 Nov 2022, at 11:35, Ivet Petrova 
mailto:ivet.petr...@shapeblue.com>> wrote:

Hi all,

A few updates here:
- I will go and book us a booth for the CloudFest, Hope I can use the logo of 
Apache CloudStack on it. We will be also looking for volunteers to join us at 
the booth.
- I did not manage to get a lot of feedback for the Fosdem, so I am proceeding 
with applying for a table for the CloudStack project there. Again, I am looking 
for volunteers to present the project there. + we will have some nice swags 
after the CCC to bring. It will be great to get some visibility for CloudStack 
there.

If anybody has comments or ideas or want to volunteer, pls write to this thread.

Kind regards,




On 10 Oct 2022, at 17:36, Giles Sirett 
mailto:giles.sir...@shapeblue.com>>
 wrote:

Ivet  - thanks for looking in to these.
I think that CloudStack should definitely be represented at some of these events

I'd like to offer ShapeBlue to provide sponsorship/funding to get Cloudstack a 
booth at Cloudfest


Op 03-10-2022 om 09:35 schreef Ivet Petrova:
Hello all,

I am sharing 2 upcoming events, which are quite big an interesting and I think 
it worths for pour community to exhibit and to be presented there:
FOSDEM:
Fosdem 2023 is on 4-5 February in Brussels.  It would be great if we can get a 
stand for Apache CloudStack and some of the community to attend and hang out at 
the stand.
I’m happy to do the application for a stand but first wanted to see who may be 
able to come along and help out?
The CFP to propose Developer Rooms is also open – my thinking is that we don’t 
try to submit a developer room (as they’re limited in number) but instead wait 
to see what others submit – hopefully there will be a devroom on IaaS or 
virtualisation where CloudStack talks could sit.
https://fosdem.org/2023/


FOSDEM seems like a good event, but I always have mixed feelings this being on 
saturday and sunday. That makes it more difficult for people to join this event.

That said I would be willing to do a talk, I can drive there and back easily in 
one day :-)

CloudFest:
Cloudfest is on 21-23 March and will happen in Europa Park, Germany. It is the 
biggest get together in EU for cloud, hosting and MSP providers and usually 
collects 3000-4000 people. Although in Europe, it is visited from big companies 
from USA also.My idea for there is to be presented with a booth for which we 
will need people to help to be presented there and talk with attendees + some 
financial support from the community. The smallest booth is 12 000 EUR and I 
will try to discount it a bit, but we will need some help from companies from 
the community.
The main target is to attract new users of CloudStack from the cloud industry + 
to engage more developers to contribute to the project.
For companies yes which want to sponsor the booth, this will be a great 
visibility of their success stories of using CloudStack or building services on 
top of it.

https://www.cloudfest.com/


I think that this would be a good event to be present at. In the past Citrix 
was here with their CloudPlatform product.

The EUR 12k is a high fee and we might struggle to get this funding together, 
but I do think we fit in here.

Wido


Will be awesome if we raise awareness and engagement around this
events. Please, ping me if you want to join/support/help/sponsor :)
Have a lovely week and Happy OctoberFest :)


Kind regards,






Giles Sirett
CEO
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Find out more about ShapeBlue and our range of CloudStack related services:
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Re: General Questions regarding Cloudstack

[Vivek Kumar via users]

Hello Bryan,

Cloudstack gives you super awesome API feature, so yes you run run a Jenkins 
job to provision instances on target host. So you can achieve this via 2 method.

1- Create compute offering in ACS and provide some tag and that tag should be 
present on the HOST as well, i.e one offering with A tag will provision VM on A 
host, create another compute offering with TAG “B’” which will provision VM on 
B host. So you will have 2 compute offerings -

So you write a script i.e in python or any of your fav language  for the API - 
deployVirtualMachine - and specific the required compute_offering_id. Now this 
script can be executed from your Jenkins pipeline

2- Second method is to pass the host_id in the API call - deployVirtualMachine 
call -  so in this you won’t need to create separate compute offering.

https://cloudstack.apache.org/api/apidocs-4.17/apis/deployVirtualMachine.html



Vivek Kumar
Sr. Manager - Cloud & DevOps
TechOps | Indiqus Technologies

vivek.ku...@indiqus.com 
www.indiqus.com 




> On 21-Nov-2022, at 7:19 PM, Bryan Tiang  wrote:
> 
> Hi Vivek,
> 
> Thank for the response.
> 
> Which of these would be the most recommended method? In terms of 
> simplification and efficient maintenance?
> 
> What about CI/CD? Is it possible to integrate our CICD pipeline to deploy 2 
> instances of the same app to 2 different physical servers? If so, I suppose 
> if I use the Host Tag option, I will somehow need to have the pipeline 
> contain those conditions?
> 
> Regards,
> Bryan
> 
> On 21 Nov 2022, at 6:02 PM, Nux  wrote:
> 
> A
> 


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Re: General Questions regarding Cloudstack

[Bryan Tiang]

Hi Vivek,

Thank for the response.

Which of these would be the most recommended method? In terms of simplification 
and efficient maintenance?

What about CI/CD? Is it possible to integrate our CICD pipeline to deploy 2 
instances of the same app to 2 different physical servers? If so, I suppose if 
I use the Host Tag option, I will somehow need to have the pipeline contain 
those conditions?

Regards,
Bryan

On 21 Nov 2022, at 6:02 PM, Nux  wrote:

A

Re: Console View Not Working

[Granwille Strauss]

Hi Nicolas

On my working zone it shows the same:


root@v-47-VM:~# telnet public_ip 5900
Trying kvm_public_ip...
Connected to 41.72.146.218.
Escape character is '^]'.
RFB 003.008


Both my kvm hosts have the same qemu/libvirt  versions too. The issue 
seems to boil down to my routing. I tested other telnet ports such as 53 
and 80 etc the all come back with no route error.


My existing zone, the one working is fully connected using public IP 
addresses and zero private networking subnets. I created a new zone to 
reconfigure my set up this time using private subnets, since its 
recommended that way. I created a backlink connection between my three 
hosts on the same private VLAN. But it turns out my private backlink 
connection cannot reach the public network. So I now had to configure a 
gateway myself and its supposed to route network from my private subnets 
to the internet such as a ping to 1.1.1.1.


I believe this configuration might be the reason, because as soon as I 
turn off the firewall "gateway" I can telnet successfully from the cpvm 
but then the agents disconnects because if cannot reach the public network.


On 11/21/22 14:01, Nicolas Vazquez wrote:

Hi Granwille,

I see the RFB version offered by the VNC server is 3.8, and the CPVM currently 
can handle up to 3.3. Can you compare on your working zone the output of the 
telnet to a VNC working port? Is there any difference on the qemu/libvirt 
configurations on the hosts from each zone?

Regards,
Nicolas Vazquez


From: Granwille Strauss
Date: Monday, 21 November 2022 at 08:20
To: Nux
Cc:users@cloudstack.apache.org  
Subject: Re: Console View Not Working

Hi

Its running on the KVM server:
root@hostname ~ $ grep -w 5900 /etc/services
rfb 5900/tcp# Remote Framebuffer
rfb 5900/udp# Remote Framebuffer
root@hostname ~ $

I stopped the firewall and was able to connect to the VNC service from the cpvm:
root@v-78-VM:~# telnet 192.168.50.3 5900
Trying 192.168.50.3...
Connected to 192.168.50.3.
Escape character is '^]'.
RFB 003.008

Thank you, this helps a lot. I am going to see if white listing some rules 
might work. And see if it works after testing.
On 11/21/22 13:02, Nux wrote:

Networking can get tricky, especially if you want to be too smart about it, it 
will bite back.

Anyway, VNC port 5900, is that even listening on the hypervisor, what is 
ss/netstat saying?

Try to find an existing port to test against. If that fails check/disable the 
firewall on the hypervisor or on any firewall device between management server 
and hypervisor.
---
Nux
www.nux.ro



On 2022-11-21 10:47, Granwille Strauss wrote:

Hi Nux

Thanks for the update. I ssh'd into the CPVM and when I run `telnet 
HV_Private_IP 5900` I get no route error. But if I do this with my working 
existing zone it works fine.  So it seems my systemvms cannot reach the VNC 
server but when I ping from cpvm to kvm private ip I get a successful response, 
this makes no sense.

--

Regards / Groete
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e:granwi...@namhost.com
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Re: Console View Not Working

[Nicolas Vazquez]

Hi Granwille,

I see the RFB version offered by the VNC server is 3.8, and the CPVM currently 
can handle up to 3.3. Can you compare on your working zone the output of the 
telnet to a VNC working port? Is there any difference on the qemu/libvirt 
configurations on the hosts from each zone?

Regards,
Nicolas Vazquez


From: Granwille Strauss 
Date: Monday, 21 November 2022 at 08:20
To: Nux 
Cc: users@cloudstack.apache.org 
Subject: Re: Console View Not Working

Hi

Its running on the KVM server:
root@hostname ~ $ grep -w 5900 /etc/services
rfb 5900/tcp# Remote Framebuffer
rfb 5900/udp# Remote Framebuffer
root@hostname ~ $

I stopped the firewall and was able to connect to the VNC service from the cpvm:
root@v-78-VM:~# telnet 192.168.50.3 5900
Trying 192.168.50.3...
Connected to 192.168.50.3.
Escape character is '^]'.
RFB 003.008

Thank you, this helps a lot. I am going to see if white listing some rules 
might work. And see if it works after testing.
On 11/21/22 13:02, Nux wrote:

Networking can get tricky, especially if you want to be too smart about it, it 
will bite back.

Anyway, VNC port 5900, is that even listening on the hypervisor, what is 
ss/netstat saying?

Try to find an existing port to test against. If that fails check/disable the 
firewall on the hypervisor or on any firewall device between management server 
and hypervisor.
---
Nux
www.nux.ro



On 2022-11-21 10:47, Granwille Strauss wrote:

Hi Nux

Thanks for the update. I ssh'd into the CPVM and when I run `telnet 
HV_Private_IP 5900` I get no route error. But if I do this with my working 
existing zone it works fine.  So it seems my systemvms cannot reach the VNC 
server but when I ping from cpvm to kvm private ip I get a successful response, 
this makes no sense.

--

Regards / Groete
[https://www.adsigner.com/v1/s/631091998d4670001fe43ec2/621c9b76c140bb001ed0f818/logo/621b3fa39fb210001f975298/cd2904ba-304d-4a49-bf33-cbe9ac76d929_248x-.png]
Granwille Strauss  //  Senior Systems Admin

e: granwi...@namhost.com
m: +264 81 323 1260
w: www.namhost.com

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Re: Console View Not Working

[Granwille Strauss]

Hi

Its running on the KVM server:


root@hostname ~ $ grep -w 5900 /etc/services
rfb 5900/tcp    # Remote Framebuffer
rfb 5900/udp    # Remote Framebuffer
root@hostname ~ $

I stopped the firewall and was able to connect to the VNC service from 
the cpvm:



root@v-78-VM:~# telnet 192.168.50.3 5900
Trying 192.168.50.3...
Connected to 192.168.50.3.
Escape character is '^]'.
RFB 003.008


Thank you, this helps a lot. I am going to see if white listing some 
rules might work. And see if it works after testing.


On 11/21/22 13:02, Nux wrote:


Networking can get tricky, especially if you want to be too smart 
about it, it will bite back.


Anyway, VNC port 5900, is that even listening on the hypervisor, what 
is ss/netstat saying?


Try to find an existing port to test against. If that fails 
check/disable the firewall on the hypervisor or on any firewall device 
between management server and hypervisor.


---
Nux
www.nux.ro 


On 2022-11-21 10:47, Granwille Strauss wrote:


Hi Nux

Thanks for the update. I ssh'd into the CPVM and when I run `telnet 
HV_Private_IP 5900` I get no route error. But if I do this with my 
working existing zone it works fine.  So it seems my systemvms cannot 
reach the VNC server but when I ping from cpvm to kvm private ip I 
get a successful response, this makes no sense.



--
Regards / Groete

 Granwille Strauss  // Senior Systems Admin

*e:* granwi...@namhost.com
*m:* +264 81 323 1260 
*w:* www.namhost.com 





Namhost Internet Services (Pty) Ltd,

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Re: Console View Not Working

[Nux]

Networking can get tricky, especially if you want to be too smart about 
it, it will bite back.


Anyway, VNC port 5900, is that even listening on the hypervisor, what is 
ss/netstat saying?


Try to find an existing port to test against. If that fails 
check/disable the firewall on the hypervisor or on any firewall device 
between management server and hypervisor.


---
Nux
www.nux.ro [1]

On 2022-11-21 10:47, Granwille Strauss wrote:


Hi Nux

Thanks for the update. I ssh'd into the CPVM and when I run `telnet 
HV_Private_IP 5900` I get no route error. But if I do this with my 
working existing zone it works fine.  So it seems my systemvms cannot 
reach the VNC server but when I ping from cpvm to kvm private ip I get 
a successful response, this makes no sense.



Links:
--
[1] http://www.nux.ro

Re: Console View Not Working

[Granwille Strauss]

Hi Nux

Thanks for the update. I ssh'd into the CPVM and when I run `telnet 
HV_Private_IP 5900` I get no route error. But if I do this with my 
working existing zone it works fine.  So it seems my systemvms cannot 
reach the VNC server but when I ping from cpvm to kvm private ip I get a 
successful response, this makes no sense.


Also, I am not sure but have you seen my lasted thread called "KVM 
Advanced Networking Config with 2 NIC​" do you think this could be the 
reason? Previously my systemvm agents did not want to connect. I found 
that they could not reach DNS server, so I had to setup a gateway 
forwarder for my private subnet to reach the public internet, since it 
was isolated off. Do you think this could be the reason?


On 11/21/22 12:18, Nux wrote:


Oh and make sure to use the "management IP" of the HV as that's what 
the CPVM uses.


---
Nux
www.nux.ro 


On 2022-11-21 10:13, Nux wrote:


From the CP VM can you reach the VNC consoles of the instances?

ie from the CP VM can you run eg:

telnet Hypervisor-IP 5900

(or whatever is the port, check on the HV)

---
Nux
www.nux.ro 


On 2022-11-21 05:44, Granwille Strauss wrote:

Hi Guys

Any advice on this?

On 11/19/22 08:26, Granwille Strauss wrote:

Hi Guys

Sorry for the many requests, this should be my last one.

I have an existing zone with 11 VMs running, the current
consolevm works perfectly fine for 11 VMs. I also set
consoleproxy.url.domain in global config to use a subdomain
name such as console.domain.name and have a A record
configured in DNS making it fully accessible on its public IP.

I now added a new zone, new IP private space to my existing
cloudstack management. Now I have a new consolevm for this
new zone, its is running and agent is connected. However,
whenever I want to access console view for SSVM or ConsoleVM
its just "connecting".

As per previous email thread:
http://markmail.org/thread/azna4sh23nxgldc5
 I have tested
the following and its working perfectly fine, see attached
screenshots.

I also added an additional A record to the subdomain name to
include the new consolevm public IP with the hopes it would
work. But nothing yet. Do anyone know what else I can try,
please?

You can see screenshots here: https://we.tl/t-EzUgWtU1c5
 Too big to attached for the
newsletter.
-- 
Regards / Groete


 Granwille Strauss  // Senior
Systems Admin

*e:* granwi...@namhost.com 
*m:* +264 81 323 1260 
*w:* www.namhost.com 







Namhost Internet Services (Pty) Ltd,

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-- 
Regards / Groete


 Granwille Strauss  // Senior Systems Admin

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*m:* +264 81 323 1260 
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Re: Console View Not Working

[Nux]

Oh and make sure to use the "management IP" of the HV as that's what the 
CPVM uses.


---
Nux
www.nux.ro [1]

On 2022-11-21 10:13, Nux wrote:


From the CP VM can you reach the VNC consoles of the instances?

ie from the CP VM can you run eg:

telnet Hypervisor-IP 5900

(or whatever is the port, check on the HV)

---
Nux
www.nux.ro [1]

On 2022-11-21 05:44, Granwille Strauss wrote:

Hi Guys

Any advice on this?

On 11/19/22 08:26, Granwille Strauss wrote:

Hi Guys

Sorry for the many requests, this should be my last one.

I have an existing zone with 11 VMs running, the current consolevm 
works perfectly fine for 11 VMs. I also set consoleproxy.url.domain in 
global config to use a subdomain name such as console.domain.name and 
have a A record configured in DNS making it fully accessible on its 
public IP.
I now added a new zone, new IP private space to my existing cloudstack 
management. Now I have a new consolevm for this new zone, its is 
running and agent is connected. However, whenever I want to access 
console view for SSVM or ConsoleVM its just "connecting".


As per previous email thread: 
http://markmail.org/thread/azna4sh23nxgldc5 I have tested the following 
and its working perfectly fine, see attached screenshots.


I also added an additional A record to the subdomain name to include 
the new consolevm public IP with the hopes it would work. But nothing 
yet. Do anyone know what else I can try, please?


You can see screenshots here: https://we.tl/t-EzUgWtU1c5 Too big to 
attached for the newsletter.


--

Regards / Groete

[2]
Granwille Strauss  //  Senior Systems Admin

e: granwi...@namhost.com
m: +264 81 323 1260 [3]
w: www.namhost.com [4]

[5] [6] [7] [8] [9]

[10]

Namhost Internet Services (Pty) Ltd,

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[11]
--

Regards / Groete

[2]
Granwille Strauss  //  Senior Systems Admin

e: granwi...@namhost.com
m: +264 81 323 1260 [3]
w: www.namhost.com [4]

[5] [6] [7] [8] [9]

[10]

Namhost Internet Services (Pty) Ltd,

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Re: Console View Not Working

[Nux]

From the CP VM can you reach the VNC consoles of the instances?

ie from the CP VM can you run eg:

telnet Hypervisor-IP 5900

(or whatever is the port, check on the HV)

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On 2022-11-21 05:44, Granwille Strauss wrote:


Hi Guys

Any advice on this?

On 11/19/22 08:26, Granwille Strauss wrote:


Hi Guys

Sorry for the many requests, this should be my last one.

I have an existing zone with 11 VMs running, the current consolevm 
works perfectly fine for 11 VMs. I also set consoleproxy.url.domain in 
global config to use a subdomain name such as console.domain.name and 
have a A record configured in DNS making it fully accessible on its 
public IP.
I now added a new zone, new IP private space to my existing cloudstack 
management. Now I have a new consolevm for this new zone, its is 
running and agent is connected. However, whenever I want to access 
console view for SSVM or ConsoleVM its just "connecting".


As per previous email thread: 
http://markmail.org/thread/azna4sh23nxgldc5 I have tested the 
following and its working perfectly fine, see attached screenshots.


I also added an additional A record to the subdomain name to include 
the new consolevm public IP with the hopes it would work. But nothing 
yet. Do anyone know what else I can try, please?


You can see screenshots here: https://we.tl/t-EzUgWtU1c5 Too big to 
attached for the newsletter.


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Re: General Questions regarding Cloudstack

[Nux]

To add to "concern 2", you can use pgbench to compare between bare metal 
and VM, it's the benchmarking tool from PostgreSQL DB which should be 
very handy in your situation.


---
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www.nux.ro

On 2022-11-21 05:54, Vivek Kumar wrote:

Hello Bryan,

For concern 1-

There are couple of ways to achieve this.

1- You can use affinity groups ( host anti affinity ) where it will
make sure that you applications will be powered on separate hosts.
2- You can use HOST TAG to define your hosts in compute offering. If
you want your application to be powered on any specific host.
3- You can create 2 cluster and isolated them by using the TAG either
host and storage tag.

But if you want to use host_tag  then I suggest to use at least 2-2
host for same tag, so that VMs can be powered on if any host goes
down, because cloudstack will specifically see the tagged host so if
the tagged host is not available then you won’t be able to power on
you workload.

For Concern 2:

For this, I guess you will have to deploy some testing workload on VM
and compare the performance with the baremetal, You can use tools like
IOmeter, FIO for testing the random and sequential read/write and
throughput. Because Databases required good I/O so underlying storage
would be the critical component.

I hope this helps..!



Vivek Kumar
Sr. Manager - Cloud & DevOps
TechOps | Indiqus Technologies

vivek.ku...@indiqus.com 
www.indiqus.com 




On 20-Nov-2022, at 7:17 PM, Bryan Tiang  
wrote:


Hi Guys,

Im a Business Development Manager trying to convince our company to 
convert our datacenter into a Private Cloud using Cloudstack. 
Currently things are set up in a Baremetal sort of set up. Im not 
super technical, more so on a business and risk side of things. And to 
have this approved by our management, I will need to address some of 
their concerns.


Concern 1:
Some of our applications requires High Availability. On a software 
level, we have covered this. But on a hardware level, is there a way 
to deploy our applications in a way where each HA Service is deployed 
in a different physical server (or cluster). This is to avoid any one 
server taking down the entire service (assuming both HA Applications 
are deployed as separate VMs, but in the same physical server).


Concern 2:
Is there any benchmarks only that compares the performance of bare 
metal and VM? I understand there is a slight drop in performance, but 
how much is that? Some of the system we currently deploy on bare metal 
are MSSQL Databases and other services that have very high network IO. 
Are any benchmarks available online? And can those performance 
degredations be restored/matched by compensating with more CPU/RAM 
allocation to the VM?


Appreciate the help.

Regardfs,
Bryan