@humax159 namely did you create the "kvm" label for your virtualization server?!
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Posts made by matteo nunziati
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RE: Ansible Create KVM Guests
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RE: Ansible Create KVM Guests
@humax159 said in Ansible Create KVM Guests:
I might be missing some basic step. But in order to make it work what else is needed? on ly running this returns
'PLAY [create VMs] **************************************************************
skipping: no hosts matched'Did you create and populate the hosts file?
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RE: Looking for method to backup Azure SQL database to another location or service
What account the sql account or the azure login?!
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RE: Check my 2 min audio theory on Containers
@Emad-R just to go back on topic: do not confuse snaps or lxd with docker. Docker is mostly for developers who do not package their apps.
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RE: Check my 2 min audio theory on Containers
@stacksofplates said in Check my 2 min audio theory on Containers:
@scottalanmiller said in Check my 2 min audio theory on Containers:
Containers use shared kernels by definition, that's what makes it a container.
This isn't really how Docker works. Docker manages namespaces. If you use "FROM Alpine" then it will share the kernel, but if you write an app in Go and use "FROM scratch" it has zero reliance on a specific kernel. You can also run full VMs in a Docker container which is how Red Hat uses OpenShift to deploy OpenStack VMs.
Well go requires the kernel too. But yes for the most is the "from scratch" part which allows more abstraction
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RE: Check my 2 min audio theory on Containers
Spped is mostly about local cache. Even docker requires you to bootstrap the host and usually you do it with ansible like tools. Then you download the docker images and so...
What is attractive about stuff like docker is the automation-by-default approach which has created a really good ecosystem with a lot of premade automation already done.
Doker images on kubernates are awesome but if you have to manage your data center doing ansible + docker over just ansible is not gaining a lot imho.
If docker works out of the box it saves the initial time required to write ansible scripts and design them
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RE: Why you don't need a VPN or not?
@pete-s firewall os security flaws caused the damage.
If you loose couple thing you reduce probability of attacks that it. Just this.
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RE: Why you don't need a VPN or not?
I mean: if file were exchanged by https ondemand sessions no propagation was possible.
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RE: Why you don't need a VPN or not?
As a general rule you should open secured sessions on demand. Site to site is not ondemand
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RE: Why you don't need a VPN or not?
I know big corps that have been killed by vpn .
A serious attach at 1 site killed all the services world wide. While this is mostly bad networking design this is also vpn propagating s**t -
RE: Outlook 2016 Export to PST Missing a Lot of Data
@scottalanmiller said in Outlook 2016 Export to PST Missing a Lot of Data:
@obsolesce said in Outlook 2016 Export to PST Missing a Lot of Data:
You can right-click on the mailbox, or a folder, and in properties, you can see how much data is there versus on the Exchange server.
Most is there, for sure. But definitely not "all".
Confirm. I got always this end result. This is just best effort. Not complete at all.
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RE: Check my 2 min audio theory on Containers
@emad-r said in Check my 2 min audio theory on Containers:
@scottalanmiller said in Check my 2 min audio theory on Containers:
@matteo-nunziati said in Check my 2 min audio theory on Containers:
@scottalanmiller said in Check my 2 min audio theory on Containers:
@matteo-nunziati said in Check my 2 min audio theory on Containers:
@emad-r actually The main benefit of containers is to disconnect sysadmin and devel work.
Not really. Containers are virtualization like any other, they've been around for decades and the idea that they were anything for developers is an extremely recent use case of only a very specific subset of containers. Most containers, and most of the history of containers, don't do anything like that, no more than any other kind of virtualization.
Yes but I think here we are talking docker. Docker is like python virtual envs for anything and not just for python. This is their main meaning to me.
Sure, if we are talking Docker and not talking Containerization, then Docker just seems like a sloppy, error prone way to do that.
My biggest issue with Docker is that it seems to make things worse rather than better. More complexity, more things to break, more dependencies. It introduces the very problems it claims to solve, problems that we weren't experiencing previously.
It does that, it does create more complexity at first.
Installing an app for us is much easier, like PHP-FPM + apache, it is only 10 commands or something, however if you did in docker/container in VPS you get the extra benefit of having clean environment in the host OS always + the container can be moved around easily to another VPS + it is much easier for non smart people to get your app and its updates + Docker provides free accout to publish one app.
Also the performance aspect is very good, but the storing this is bad abit.
The key idea here it is not currently hyper visor replacement, it is complementary tool that is good when you have service/server that does not need to store data.
While I find useful to have a package+config easily moveable I would syggest to manage staless services with ansible/salt and their playbooks if you want automation at sysadmin level.
The only pro of docker as a sysadmin tool is you have a good ecosystem with a lot of automation already done. With ansible/salt I don't know if you can pick from repos or you need to write everything from scratch.
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RE: Check my 2 min audio theory on Containers
@scottalanmiller said in Check my 2 min audio theory on Containers:
@matteo-nunziati said in Check my 2 min audio theory on Containers:
@scottalanmiller said in Check my 2 min audio theory on Containers:
@matteo-nunziati said in Check my 2 min audio theory on Containers:
@emad-r actually The main benefit of containers is to disconnect sysadmin and devel work.
Not really. Containers are virtualization like any other, they've been around for decades and the idea that they were anything for developers is an extremely recent use case of only a very specific subset of containers. Most containers, and most of the history of containers, don't do anything like that, no more than any other kind of virtualization.
Yes but I think here we are talking docker. Docker is like python virtual envs for anything and not just for python. This is their main meaning to me.
Sure, if we are talking Docker and not talking Containerization, then Docker just seems like a sloppy, error prone way to do that.
My biggest issue with Docker is that it seems to make things worse rather than better. More complexity, more things to break, more dependencies. It introduces the very problems it claims to solve, problems that we weren't experiencing previously.
100% agree. It makes sense only in a developers world no sysadmin usefulness here.
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RE: Check my 2 min audio theory on Containers
The only linux technology which involves containers and acts as a proper virtualization layer afaik is lxd. I don't know if there is anything similar, aka, another frontend to lxc, the actual userspace driver for kernel isolation technologies.
Of course there is the long standing openvz, but I'm considering some in-tree technology which doens't require a custom kernel.@Emad-R if you focus on docker just condider it as a way for developers for packaging their apps and runtimes. No other usage is actually envisionable imho.
LXD or similar is a different topic: they are "real" containers.
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RE: Check my 2 min audio theory on Containers
Containers on Windows can boot Ubuntu, but it does so by remove Linux from Ubuntu and replacing it with NTKernel. So instead of Ubuntu/linux, you run Ubuntu/WindowsNT which is relatively different.
Afaik docker on windows runs linux vm as containers node
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RE: Check my 2 min audio theory on Containers
@scottalanmiller said in Check my 2 min audio theory on Containers:
@matteo-nunziati said in Check my 2 min audio theory on Containers:
@emad-r actually The main benefit of containers is to disconnect sysadmin and devel work.
Not really. Containers are virtualization like any other, they've been around for decades and the idea that they were anything for developers is an extremely recent use case of only a very specific subset of containers. Most containers, and most of the history of containers, don't do anything like that, no more than any other kind of virtualization.
Yes but I think here we are talking docker. Docker is like python virtual envs for anything and not just for python. This is their main meaning to me. LXD can be something more in line with clasdic container usage but docker is mostly about pack your app runtime.
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RE: Check my 2 min audio theory on Containers
@scottalanmiller said in Check my 2 min audio theory on Containers:
@matteo-nunziati said in Check my 2 min audio theory on Containers:
Also containers should be os agnostic (as long as compatible docker versions are used).
"Should be" is subjective. Containers are OS agnostic, but not kernel agnostic. Docker is subject to this like everything else, leading to it often making software harder to deploy rather than less.
Should be refers to the fact that focker containers still fail for assuming too much. Yhis is related to your previous comment
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RE: Check my 2 min audio theory on Containers
@emad-r actually The main benefit of containers is to disconnect sysadmin and devel work.
Docker has a very mature environment where a lot of stuff can be easily rebuilt with a few hooks in github or similar.
Sys admin installs and manages the underlying os and the developer can upgrade the runtime as he needs in a disconnected way without minding about sysadmin and viceversa.
Also containers should be os agnostic (as long as compatible docker versions are used).
Just remind that docker is live a live distro. Persistent data are not moved with the container: you need SAN like storsge between 2 docker nodes to reload the same data. And this SAN like storage must be mounted in the same path. -
RE: What's in your bag?
@aaronstuder laptop, net cable, powersupply, mouse, couple of in ears, some random papers, some flyers for advertising, business cards
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RE: SAS SSD vs SAS HDD in a RAID 10?
Mind than ssd cache is ofter disabled by default with raid controllers. Letting ssd perf drop down a lot!!!
Enterprise grade ssds should have power loss protection so you should be safe re-enabling ssd on board cache. Again @scottalanmiller or @JaredBusch know more about this.