Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Docker for Mac with Kubernetes

docs.docker.com

Post reply on HN
Print view View original

131–140 of 169 posts

Re: Docker for Mac with Kubernetes

#131

Post by Axsuul »

linkmotif wrote: post #120
Axsuul wrote: post #109

Earlier quoted context omitted.

Yet with a Docker Swarm setup, you could get away with probably 10 dollars/month. K8s likely taking more resources than your app containers is why k8s may not be the best option for single node deployments. I've personally tried both orchestration options and much prefer Swarm to smaller deployments. Sure k8s could prepare you better for the future if your app takes off to the moon but that's just premature optimizat…

This might all very well be true, but Swarm doesn’t let you connect cloud disks directly to your containers, to my knowledge. Also I challenge the $10 because what cloud instances plus ancillary services add up to $10? I’m talking 2 CPUs and 7.5gb RAM.

A Digital Ocean droplet @ 1 GB runs at $10/mo which I have Docker Swarm + my app containers running on.

Re: Docker for Mac with Kubernetes

#132

Post by chrisgaun »

tedmiston wrote: post #61
linkmotif wrote: post #55

So confused by all the posts from people who say they run Swarm because kubernetes is too complicated or is only for huge deployments. I’ve had all sort of difficulties installing Docker. By hand it’s not trivial to get a secure install. Docker machine is great except it’s often broken. The Docker machine dev team is a tired, understaffed bunch that’s always playing a sisyphean whack-a-mole against dozens of cloud pr…

Do you really find k8s useful for a single node deployment or were you just making an example? I haven't used but I have used DC/OS, Mesos, and Marathon extensively, which is not a setup I'd do for a small number of nodes personally.

As a discloser, I work at Mesosphere who engineers DC/OS.

I would like to note that DC/OS now has Kubernetes [Beta]. You can manage Kubernetes resources on your DC/OS cluster now.

Here are the instructions on Github to get started: https://github.com/mesosphere/dcos-kubernetes-quickstart You can also join the Slack to help you on you out: http://chat.dcos.io/ (the #kubernetes channel)

Re: Docker for Mac with Kubernetes

#133

Post by pacala »

kuschku wrote: post #107
pacala wrote: post #101

Earlier quoted context omitted.

> How do I install GKE on my servers? ;) Great question! All major Cloud providers offer managed Kubernetes services: https://cloud.google.com/kubernetes-engine https://azure.microsoft.com/en-us/services/container-service https://aws.amazon.com/eks https://www.ibm.com/cloud/container-service The choice is Cloud + Kubernetes vs. roll everything on your own hardware. Running your own hardware is a major IT effort. Kube…

> You either run Cloud + Kubernetes and get rolling in 15 minutes, or you hire IT headcount. You can always rent dedicated hardware – much cheaper than renting similar amounts of virtual servers, and the same administration and operations costs. It’s often even significantly cheaper than what GCE offers – but of course, setting up Kubernetes is more complicated.

Exactly. Hardware rental is one way to tackle provisioning. You're still left with all the other tasks required to bootstrap your own datacenter. As you build up the roll-your-own solution, you end up in the same place: hire IT headcount.

If you are a small startup looking to validate market fit, your best bet is Cloud + Kubernetes. If you are an established business with millions of daily customers and serious IT headcount budget, you may look into roll-your-own. The best orchestrator at that scale is, again, Kubernetes.

Re: Docker for Mac with Kubernetes

#134

Post by AlexCoventry »

linkmotif wrote: post #55

So confused by all the posts from people who say they run Swarm because kubernetes is too complicated or is only for huge deployments. I’ve had all sort of difficulties installing Docker. By hand it’s not trivial to get a secure install. Docker machine is great except it’s often broken. The Docker machine dev team is a tired, understaffed bunch that’s always playing a sisyphean whack-a-mole against dozens of cloud pr…

I'm not proposing the following as a solution to your problem, which I'm sure is on a much larger scale, affording many opportunities for failure. I'm curious how it breaks in that context, though.

I regularly use a script like this, and it's never failed me unless it runs out of disk space: https://github.com/coventry/InformationDropout/blob/master/p...

Re: Docker for Mac with Kubernetes

#135

Post by raarts »

sandGorgon wrote: post #100
linkmotif wrote: post #79

Earlier quoted context omitted.

Thanks for the reply. I agree with what you say. I'm not tying to say people should all jump to k8s. Having options on the market is great. But I was trying to refute the notion that Kubernetes has no advantages unless you're running a huge cluster. My main points where: * It works great with 1 node. * It comes with many features that Swarm does not have that are useful even at 1 node (PersistentVolumes, StatefulSets…

Actually if you are using StatefulSets and PV, then kubernetes is a better fit for you. However, Swarm is undeniably simpler to work with unless you have very specific requirements that only K8S provides. The yml file is incredibly simpler. Docker Swarm is the Kotlin to Kubernetes' Java. It's a much pleasanter and much less intimidating way to build production systems that scale pretty well. Kubernetes needs you to h…

Completely agree. Tried them both and found Docker Swarm to be much simpler to setup and maintain.

Re: Docker for Mac with Kubernetes

#136

Post by raarts »

tokenizerrr wrote: post #125
linkmotif wrote: post #118

Earlier quoted context omitted.

Right, I agree. But with your easier Swarm setup, how do you then attach cloud disks directly to your docker container, like a PersistentVolume affords? That one feature makes basically anything worth it, IMO. Most apps are stateful.

You don't, because you're running on your own hardware, and there is no concept of cloud disks. There are some solutions like Ceph, but they're tough to setup. Usually I just pin containers to hosts. This is fine on a small setup. In fact, many of my small setups are just a single host.

> Ceph tough to setup

Try ProxMox. They have it built-in.

Re: Docker for Mac with Kubernetes

#137

Post by raarts »

jacksmith21006 wrote: post #112
linkmotif wrote: post #55

So confused by all the posts from people who say they run Swarm because kubernetes is too complicated or is only for huge deployments. I’ve had all sort of difficulties installing Docker. By hand it’s not trivial to get a secure install. Docker machine is great except it’s often broken. The Docker machine dev team is a tired, understaffed bunch that’s always playing a sisyphean whack-a-mole against dozens of cloud pr…

This! I wonder if people say it because it is what they heard or from actual experience? I found K8s far easier but seen people say otherwise and suspect there is a bit of an echochamber happening.

I can't believe that you came to that conclusion after trying them both. Try comparing the config files for Swarm and k8s for the same system, the former are much shorter and simpler.

Re: Docker for Mac with Kubernetes

#138

Post by sz4kerto »

pacala wrote: post #133
kuschku wrote: post #107

Earlier quoted context omitted.

> You either run Cloud + Kubernetes and get rolling in 15 minutes, or you hire IT headcount. You can always rent dedicated hardware – much cheaper than renting similar amounts of virtual servers, and the same administration and operations costs. It’s often even significantly cheaper than what GCE offers – but of course, setting up Kubernetes is more complicated.

Exactly. Hardware rental is one way to tackle provisioning. You're still left with all the other tasks required to bootstrap your own datacenter. As you build up the roll-your-own solution, you end up in the same place: hire IT headcount. If you are a small startup looking to validate market fit, your best bet is Cloud + Kubernetes. If you are an established business with millions of daily customers and serious IT he…

That's not true in a whole lot of industries. Many (!) small shops simply can't choose the cloud because of various reasons (regulations, for example).

Re: Docker for Mac with Kubernetes

#139

Post by brobinson »

Exuma wrote: post #128

One of my engineering friends told me he didn't use Kubernetes in the past because there was a single point of failure with it for distributed setups. I really wish I could remember what SPOF was pertaining to, but I just can't remember. Does anyone have any idea if this is still relevant/accurate information? He told me this maybe 2-3 years ago, so I was wondering how things have changed since then, or if anyone kno…

Multi-master? Kubespray supports multi-master deployments now.

Re: Docker for Mac with Kubernetes

#140

Post by sandGorgon »

StavrosK wrote: post #74
amq wrote: post #50

Earlier quoted context omitted.

I'm using https://github.com/containous/traefik with Swarm for termination, Let's Encrypt and routing with success. Configuration is handled with service labels.

Thanks for the shoutout. Would you happen to have a writeup on how to do that, or a few lines on whether it's Swarm-aware somehow? I guess it can't be too hard to figure out, but if there's something that will speed that up, that's better.

No - you don't need it to be swarm aware at all.

All you need to do is create a docker service out if traefik/nginx/haproxy/whatever and bind the ports of the service to type "ingress". From then on, all traffic is internal - and you deal with it normally from one docker service to another.

Post reply on HN