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Merge remote-tracking branch 'LCTT/master'
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@ -1,16 +1,16 @@
|
||||
[#]: collector: (lujun9972)
|
||||
[#]: translator: (geekpi)
|
||||
[#]: reviewer: ( )
|
||||
[#]: publisher: ( )
|
||||
[#]: url: ( )
|
||||
[#]: reviewer: (wxy)
|
||||
[#]: publisher: (wxy)
|
||||
[#]: url: (https://linux.cn/article-12044-1.html)
|
||||
[#]: subject: (Fedora 32 Release Date, New Features and Everything Else)
|
||||
[#]: via: (https://itsfoss.com/fedora-32/)
|
||||
[#]: author: (Ankush Das https://itsfoss.com/author/ankush/)
|
||||
|
||||
Fedora 32 发布日期、新功能和其他
|
||||
Fedora 32 发布日期、新功能和其它信息
|
||||
======
|
||||
|
||||
Fedora 32 应该和 [Ubuntu 20.04 LTS][1] 同时在 4 月底发布。
|
||||
Fedora 32 应该和 [Ubuntu 20.04 LTS][1] 一样都在 4 月底发布。
|
||||
|
||||
由于我们详细介绍了 Ubuntu 20.04，因此我们考虑在这里为 Fedora 粉丝做同样的事情。
|
||||
|
||||
@ -20,25 +20,21 @@ Fedora 32 应该和 [Ubuntu 20.04 LTS][1] 同时在 4 月底发布。
|
||||
|
||||
![][2]
|
||||
|
||||
#### EarlyOOM 已启用
|
||||
#### 启用了 EarlyOOM
|
||||
|
||||
在此版本中，默认启用 [EarlyOOM][3]。提供一下背景知识，EarlyOOM 使用户可以通过大量使用 [swap][4] 轻松地从内存不足的情况中恢复系统。
|
||||
在此版本中，默认启用 [EarlyOOM][3]。提供一下背景知识，EarlyOOM 可以让用户在大量进行[交换][4]时轻松地摆脱内存不足状况恢复其系统。
|
||||
|
||||
值得注意的是，它适用于 Fedora 32 Beta 工作站版本。
|
||||
|
||||
#### 添加了 GNOME 3.36
|
||||
|
||||
新的 Fedora 32 工作站版也包含了新的 [GNOME 3.36][5]。
|
||||
新的 Fedora 32 工作站版也包含了新的 [GNOME 3.36][5]。不仅限于 Fedora 32 Beta 工作站版，[Ubuntu 20.04 LTS][1] 的每日构建版中也添加了它。
|
||||
|
||||
不仅限于 Fedora 32 Beta 工作站版，[Ubuntu 20.04 LTS][1] 的每日构建版中也添加了它。
|
||||
|
||||
当然，GNOME 3.36 中的改进也进入了 Fedora 的最新版本，总体上提供了更快，更好的体验。
|
||||
|
||||
因此，你将获得新的锁定屏幕，请勿打扰以及 GNOME 3.36 附带的所有其他功能。
|
||||
当然，GNOME 3.36 中的改进也进入了 Fedora 的最新版本，总体上提供了更快，更好的体验。因此，你将获得新的锁定屏幕、请勿打扰功能以及 GNOME 3.36 附带的所有其他功能。
|
||||
|
||||
#### 软件包更新
|
||||
|
||||
Fedora 32 版本还更新了许多重要的软件包，包括 Ruby、Perl 和 Python。它还有 [GNU 编译器集合][6]（GCC）的最新版本 10。
|
||||
Fedora 32 版本还更新了许多重要的软件包，包括 Ruby、Perl 和 Python。它还有 [GNU 编译器集合（GCC）][6]的最新版本 10。
|
||||
|
||||
#### 其他更改
|
||||
|
||||
@ -50,7 +46,7 @@ Fedora 32 仍在开发中。Beta 版已经发布，你可以在空闲系统或
|
||||
|
||||
在[官方公告][9]中，他们提到了 **Fedora 32 beta 工作站版**和**服务器版**以及其他流行版本的可用性。
|
||||
|
||||
要获取工作站和服务器版本，你必须访问 [Fedora Workstation][10] 和 [Fedora Server][11] 的官方下载页面（取决于你的需求）。
|
||||
要获取工作站和服务器版本，你必须访问 [Fedora 工作站][10]和 [Fedora 服务器][11]的官方下载页面（取决于你的需求）。
|
||||
|
||||
![Fedora Download Beta][12]
|
||||
|
||||
@ -60,8 +56,6 @@ Fedora 32 仍在开发中。Beta 版已经发布，你可以在空闲系统或
|
||||
* [Fedora 32 Beta Labs][14]
|
||||
* [Fedora 32 Beta ARM][15]
|
||||
|
||||
|
||||
|
||||
你是否注意到 Fedora 32 中的其他新功能？你想在这里看到哪些功能？请随时在下面发表评论。
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
@ -71,7 +65,7 @@ via: https://itsfoss.com/fedora-32/
|
||||
作者：[Ankush Das][a]
|
||||
选题：[lujun9972][b]
|
||||
译者：[geekpi](https://github.com/geekpi)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
校对：[wxy](https://github.com/wxy)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
@ -91,4 +85,4 @@ via: https://itsfoss.com/fedora-32/
|
||||
[12]: https://i2.wp.com/itsfoss.com/wp-content/uploads/2020/03/fedora-download-beta.jpg?ssl=1
|
||||
[13]: https://spins.fedoraproject.org/prerelease
|
||||
[14]: https://labs.fedoraproject.org/prerelease
|
||||
[15]: https://arm.fedoraproject.org/prerelease
|
||||
[15]: https://arm.fedoraproject.org/prerelease
|
||||
@ -1,203 +0,0 @@
|
||||
[#]: collector: (lujun9972)
|
||||
[#]: translator: (HankChow)
|
||||
[#]: reviewer: ( )
|
||||
[#]: publisher: ( )
|
||||
[#]: url: ( )
|
||||
[#]: subject: (Run Kubernetes on a Raspberry Pi with k3s)
|
||||
[#]: via: (https://opensource.com/article/20/3/kubernetes-raspberry-pi-k3s)
|
||||
[#]: author: (Lee Carpenter https://opensource.com/users/carpie)
|
||||
|
||||
Run Kubernetes on a Raspberry Pi with k3s
|
||||
======
|
||||
Create your own three-node Kubernetes cluster with these easy-to-follow
|
||||
instructions.
|
||||
![A ship wheel with someone steering][1]
|
||||
|
||||
For a long time, I've been interested in building a [Kubernetes][2] cluster out of a stack of inexpensive Raspberry Pis. Following along with various tutorials on the web, I was able to get Kubernetes installed and working in a three Pi cluster. However, the RAM and CPU requirements on the master node overwhelmed my Pi. This caused poor performance when doing various Kubernetes tasks. It also made an in-place upgrade of Kubernetes impossible.
|
||||
|
||||
As a result, I was very excited to see the [k3s project][3]. K3s is billed as a lightweight Kubernetes for use in resource-constrained environments. It is also optimized for ARM processors. This makes running a Raspberry Pi-based Kubernetes cluster much more feasible. In fact, we are going to create one in this article.
|
||||
|
||||
### Materials needed
|
||||
|
||||
To create the Kubernetes cluster described in this article, we are going to need:
|
||||
|
||||
* At least one Raspberry Pi (with SD card and power adapter)
|
||||
* Ethernet cables
|
||||
* A switch or router to connect all our Pis together
|
||||
|
||||
|
||||
|
||||
We will be installing k3s from the internet, so they will need to be able to access the internet through the router.
|
||||
|
||||
### An overview of our cluster
|
||||
|
||||
For this cluster, we are going to use three Raspberry Pis. The first we'll name **kmaster** and assign a static IP of 192.168.0.50 (since our local network is 192.168.0.0/24). The first worker node (the second Pi), we'll name **knode1** and assign an IP of 192.168.0.51. The final worker node we'll name **knode2** and assign an IP of 192.168.0.52.
|
||||
|
||||
Obviously, if you have a different network layout, you may use any network/IPs you have available. Just substitute your own values anywhere IPs are used in this article.
|
||||
|
||||
So that we don't have to keep referring to each node by IP, let's add their host names to our **/etc/hosts** file on our PC.
|
||||
|
||||
|
||||
```
|
||||
echo -e "192.168.0.50\tkmaster" | sudo tee -a /etc/hosts
|
||||
echo -e "192.168.0.51\tknode1" | sudo tee -a /etc/hosts
|
||||
echo -e "192.168.0.52\tknode2" | sudo tee -a /etc/hosts
|
||||
```
|
||||
|
||||
### Installing the master node
|
||||
|
||||
Now we're ready to install the master node. The first step is to install the latest Raspbian image. I am not going to explain that here, but I have a [detailed article][4] on how to do this if you need it. So please go install Raspbian, enable the SSH server, set the hostname to **kmaster**, and assign a static IP of 192.168.0.50.
|
||||
|
||||
Now that Raspbian is installed on the master node, let's boot our master Pi and **ssh** into it:
|
||||
|
||||
|
||||
```
|
||||
`ssh pi@kmaster`
|
||||
```
|
||||
|
||||
Now we're ready to install **k3s**. On the master Pi, run:
|
||||
|
||||
|
||||
```
|
||||
`curl -sfL https://get.k3s.io | sh -`
|
||||
```
|
||||
|
||||
When the command finishes, we already have a single node cluster set up and running! Let's check it out. Still on the Pi, run:
|
||||
|
||||
|
||||
```
|
||||
`sudo kubectl get nodes`
|
||||
```
|
||||
|
||||
You should see something similar to:
|
||||
|
||||
|
||||
```
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
kmaster Ready master 2m13s v1.14.3-k3s.1
|
||||
```
|
||||
|
||||
### Extracting the join token
|
||||
|
||||
We want to add a couple of worker nodes. When installing **k3s** on those nodes we will need a join token. The join token exists on the master node's filesystem. Let's copy that and save it somewhere we can get to it later:
|
||||
|
||||
|
||||
```
|
||||
`sudo cat /var/lib/rancher/k3s/server/node-token`
|
||||
```
|
||||
|
||||
### Installing the worker nodes
|
||||
|
||||
Grab some SD cards for the two worker nodes and install Raspbian on each. For one, set the hostname to **knode1** and assign an IP of 192.168.0.51. For the other, set the hostname to **knode2** and assign an IP of 192.168.0.52. Now, let's install **k3s**.
|
||||
|
||||
Boot your first worker node and **ssh** into it:
|
||||
|
||||
|
||||
```
|
||||
`ssh pi@knode1`
|
||||
```
|
||||
|
||||
On the Pi, we'll install **k3s** as before, but we will give the installer extra parameters to let it know that we are installing a worker node and that we'd like to join the existing cluster:
|
||||
|
||||
|
||||
```
|
||||
curl -sfL <http://get.k3s.io> | K3S_URL=<https://192.168.0.50:6443> \
|
||||
K3S_TOKEN=join_token_we_copied_earlier sh -
|
||||
```
|
||||
|
||||
Replace **join_token_we_copied_earlier** with the token from the "Extracting the join token" section. Repeat these steps for **knode2**.
|
||||
|
||||
### Access the cluster from our PC
|
||||
|
||||
It'd be annoying to have to **ssh** to the master node to run **kubectl** anytime we wanted to inspect or modify our cluster. So, we want to put **kubectl** on our PC. But first, let's get the configuration information we need from our master node. **Ssh** into **kmaster** and run:
|
||||
|
||||
|
||||
```
|
||||
`sudo cat /etc/rancher/k3s/k3s.yaml`
|
||||
```
|
||||
|
||||
Copy this configuration information and return to your PC. Make a directory for the config:
|
||||
|
||||
|
||||
```
|
||||
`mkdir ~/.kube`
|
||||
```
|
||||
|
||||
Save the copied configuration as **~/.kube/config**. Now edit the file and change the line:
|
||||
|
||||
|
||||
```
|
||||
`server: https://localhost:6443`
|
||||
```
|
||||
|
||||
to be:
|
||||
|
||||
|
||||
```
|
||||
`server: https://kmaster:6443`
|
||||
```
|
||||
|
||||
For security purpose, limit the file's read/write permissions to just yourself:
|
||||
|
||||
|
||||
```
|
||||
`chmod 600 ~/.kube/config`
|
||||
```
|
||||
|
||||
Now let's install **kubectl** on our PC (if you don't already have it). The Kubernetes site has [instructions][5] for doing this for various platforms. Since I'm running Linux Mint, an Ubuntu derivative, I'll show the Ubuntu instructions here:
|
||||
|
||||
|
||||
```
|
||||
sudo apt update && sudo apt install -y apt-transport-https
|
||||
curl -s <https://packages.cloud.google.com/apt/doc/apt-key.gpg> | sudo apt-key add -
|
||||
echo "deb <https://apt.kubernetes.io/> kubernetes-xenial main" | \
|
||||
sudo tee -a /etc/apt/sources.list.d/kubernetes.list
|
||||
sudo apt update && sudo apt install kubectl
|
||||
```
|
||||
|
||||
If you're not familiar, the above commands add a Debian repository for Kubernetes, grab its GPG key for security, and then update the list of packages and install **kubectl**. Now, we'll get notifications of any updates for **kubectl** through the standard software update mechanism.
|
||||
|
||||
Now we can check out our cluster from our PC! Run:
|
||||
|
||||
|
||||
```
|
||||
`kubectl get nodes`
|
||||
```
|
||||
|
||||
You should see something like:
|
||||
|
||||
|
||||
```
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
kmaster Ready master 12m v1.14.3-k3s.1
|
||||
knode1 Ready worker 103s v1.14.3-k3s.1
|
||||
knode1 Ready worker 103s v1.14.3-k3s.1
|
||||
```
|
||||
|
||||
Congratulations! You have a working 3-node Kubernetes cluster!
|
||||
|
||||
### The k3s bonus
|
||||
|
||||
If you run **kubectl get pods --all-namespaces**, you will see some extra pods for [Traefik][6]. Traefik is a reverse proxy and load balancer that we can use to direct traffic into our cluster from a single entry point. Kubernetes allows for this but doesn't provide such a service directly. Having Traefik installed by default is a nice touch by Rancher Labs. This makes a default **k3s** install fully complete and immediately usable!
|
||||
|
||||
We're going to explore using Traefik through Kubernetes **ingress** rules and deploy all kinds of goodies to our cluster in future articles. Stay tuned!
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: https://opensource.com/article/20/3/kubernetes-raspberry-pi-k3s
|
||||
|
||||
作者：[Lee Carpenter][a]
|
||||
选题：[lujun9972][b]
|
||||
译者：[译者ID](https://github.com/译者ID)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
[a]: https://opensource.com/users/carpie
|
||||
[b]: https://github.com/lujun9972
|
||||
[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/ship_wheel_gear_devops_kubernetes.png?itok=xm4a74Kv (A ship wheel with someone steering)
|
||||
[2]: https://opensource.com/resources/what-is-kubernetes
|
||||
[3]: https://k3s.io/
|
||||
[4]: https://carpie.net/articles/headless-pi-with-static-ip-wired-edition
|
||||
[5]: https://kubernetes.io/docs/tasks/tools/install-kubectl/
|
||||
[6]: https://traefik.io/
|
||||
@ -0,0 +1,202 @@
|
||||
[#]: collector: (lujun9972)
|
||||
[#]: translator: (HankChow)
|
||||
[#]: reviewer: ( )
|
||||
[#]: publisher: ( )
|
||||
[#]: url: ( )
|
||||
[#]: subject: (Run Kubernetes on a Raspberry Pi with k3s)
|
||||
[#]: via: (https://opensource.com/article/20/3/kubernetes-raspberry-pi-k3s)
|
||||
[#]: author: (Lee Carpenter https://opensource.com/users/carpie)
|
||||
|
||||
使用 K3s 在树莓派上运行 Kubernetes 集群
|
||||
======
|
||||
> 跟随接下来的介绍，自己搭建一个三节点的 Kubernetes 集群。
|
||||
|
||||
![A ship wheel with someone steering][1]
|
||||
|
||||
我对在树莓派上搭建 [Kubernetes][2] 集群已经感兴趣很长时间了，只要照着网上的教程，我可以在由三个树莓派组成的集群中搭建一套 Kubernetes 并正常运行。但在这种情况下，主节点上的内存和 CPU 资源捉襟见肘，执行 Kubernetes 任务的时候往往性能不佳，想要升级 Kubernetes 就更不可能了。
|
||||
|
||||
这个时候，我发现了 [K3s][3] 这个项目。K3s 誉为可用于资源受限环境下的轻量级 Kubernetes，它还针对 ARM 处理器做出了优化，这让 Kubernetes 集群可以在树莓派上运行得更好。在下文中，我们将会使用 K3s 来创建一个 Kubernetes 集群。
|
||||
|
||||
### 准备
|
||||
|
||||
要按照本文介绍的方式创建 Kubernetes 集群，首先需要准备：
|
||||
|
||||
* 至少一个树莓派（包括 SD 卡和电源）
|
||||
* 网线
|
||||
* 将所有树莓派连接到一起的交换机或路由器
|
||||
|
||||
我们会通过在线安装的方式安装 K3s，因此还需要可以连接到互联网。
|
||||
|
||||
### 集群概览
|
||||
|
||||
在这个集群里，我们会使用三个树莓派。其中一个树莓派作为主节点，我们将它命名为 `kmaster`，并为其分配一个静态 IP `192.168.0.50`（注：假设使用的私有网段是 192.168.0.0/24），而另外两个树莓派作为工作节点，分别命名为 `knode1` 和 `knode2`，也分别分配 `192.168.0.51` 和 `192.168.0.52` 两个 IP 地址。
|
||||
|
||||
当然，如果你实际的网络布局和上面不同，只要将文中所提及到的 IP 替换成你实际可用的 IP 就可以了。
|
||||
|
||||
为了不需要通过 IP 来引用某一个节点，我们将每个节点的主机名记录到 PC 的 `/etc/hosts` 文件当中：
|
||||
|
||||
|
||||
```
|
||||
echo -e "192.168.0.50\tkmaster" | sudo tee -a /etc/hosts
|
||||
echo -e "192.168.0.51\tknode1" | sudo tee -a /etc/hosts
|
||||
echo -e "192.168.0.52\tknode2" | sudo tee -a /etc/hosts
|
||||
```
|
||||
|
||||
### 部署主节点
|
||||
|
||||
我们首先部署主节点。最开始的步骤当然是使用镜像安装最新的 Raspbian，这个步骤可以参考我的[另一篇文章][4]，在这里就不展开介绍了。在安装完成之后，启动 SSH 服务，将主机名设置为 `kmaster`，然后分配静态 IP `192.168.0.50`。
|
||||
|
||||
在主节点上安装 Raspbian 完成后，启动树莓派并通过 `ssh` 连接上去：
|
||||
|
||||
|
||||
```
|
||||
ssh pi@kmaster
|
||||
```
|
||||
|
||||
执行以下命令安装 K3s：
|
||||
|
||||
|
||||
```
|
||||
curl -sfL https://get.k3s.io | sh -
|
||||
```
|
||||
|
||||
等到命令跑完以后，一个单节点集群就已经运行起来了。还在这个树莓派上执行：
|
||||
|
||||
|
||||
```
|
||||
sudo kubectl get nodes
|
||||
```
|
||||
|
||||
就会看到这样的输出：
|
||||
|
||||
|
||||
```
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
kmaster Ready master 2m13s v1.14.3-k3s.1
|
||||
```
|
||||
|
||||
### 获取<ruby>连接令牌<rt>join token</rt></ruby>
|
||||
|
||||
之后我们需要部署工作节点。在工作节点上安装 K3s 的时候，会需要用到连接令牌，它放置在主节点的文件系统上。首先把连接令牌打印出来保存以便后续使用：
|
||||
|
||||
|
||||
```
|
||||
sudo cat /var/lib/rancher/k3s/server/node-token
|
||||
```
|
||||
|
||||
### 部署工作节点
|
||||
|
||||
通过 SD 卡在每个作为工作节点的树莓派上安装 Raspbian。在这里，我们把其中一个树莓派的主机名设置为 `knode1`，为其分配 IP 地址 `192.168.0.51`，另一个树莓派的主机名设置为 `knode2`，分配 IP 地址 `192.168.0.52`。接下来就可以安装 K3s 了。
|
||||
|
||||
启动主机名为 `knode1` 的树莓派，通过 `ssh` 连接上去：
|
||||
|
||||
|
||||
```
|
||||
ssh pi@knode1
|
||||
```
|
||||
|
||||
在这个树莓派上，安装 K3s 的过程和之前差不多，但需要另外加上一些参数，表示它是一个工作节点，需要连接到一个已有的集群上：
|
||||
|
||||
|
||||
```
|
||||
curl -sfL <http://get.k3s.io> | K3S_URL=<https://192.168.0.50:6443> \
|
||||
K3S_TOKEN=<刚才保存下来的连接令牌> sh -
|
||||
```
|
||||
|
||||
`K3S_TOKEN` 的值需要替换成刚才保存下来的实际的连接令牌。完成之后，在主机名为 `knode2` 的树莓派上重复这个安装过程。
|
||||
|
||||
### 通过 PC 访问集群
|
||||
|
||||
现在如果我们想要查看或者更改集群，都必须 `ssh` 到集群的主节点才能使用 `kubectl`，这是比较麻烦的。因此我们会将 `kubectl` 放到 PC 上使用。首先，在主节点上获取一些必要的配置信息，`ssh` 到 `kmaster` 上执行：
|
||||
|
||||
|
||||
```
|
||||
sudo cat /etc/rancher/k3s/k3s.yaml
|
||||
```
|
||||
|
||||
复制上面命令的输出，创建一个目录用来放置配置文件：
|
||||
|
||||
|
||||
```
|
||||
mkdir ~/.kube
|
||||
```
|
||||
|
||||
将复制好的内容写入到 `~/.kube/config` 文件中，然后将
|
||||
|
||||
|
||||
```
|
||||
server: https://localhost:6443
|
||||
```
|
||||
|
||||
改为
|
||||
|
||||
|
||||
```
|
||||
server: https://kmaster:6443
|
||||
```
|
||||
|
||||
出于安全考虑，只对自己保留这个配置文件的读写权限：
|
||||
|
||||
|
||||
```
|
||||
chmod 600 ~/.kube/config
|
||||
```
|
||||
|
||||
如果 PC 上还没有安装 `kubectl` 的话，就可以开始安装了。Kubernetes 官方网站上有各种平台安装 `kubectl` 的[方法说明][5]，我使用的是 Ubuntu 的衍生版 Linux Mint，所以我的安装方法是这样的：
|
||||
|
||||
|
||||
```
|
||||
sudo apt update && sudo apt install -y apt-transport-https
|
||||
curl -s <https://packages.cloud.google.com/apt/doc/apt-key.gpg> | sudo apt-key add -
|
||||
echo "deb <https://apt.kubernetes.io/> kubernetes-xenial main" | \
|
||||
sudo tee -a /etc/apt/sources.list.d/kubernetes.list
|
||||
sudo apt update && sudo apt install kubectl
|
||||
```
|
||||
|
||||
上面几个命令的作用是添加了一个包含 Kubernetes 的 Debian 软件库，获取 GPG 密钥以确保安全，然后更新软件包列表并安装 `kubectl`。如果 `kubectl` 有更新，我们将会通过<ruby>标准软件更新机制<rt>standard software update mechanism</rt></ruby>收到通知。
|
||||
|
||||
现在在 PC 上就可以查看 Kubernetes 集群了：
|
||||
|
||||
|
||||
```
|
||||
kubectl get nodes
|
||||
```
|
||||
|
||||
输出大概会是这样：
|
||||
|
||||
|
||||
```
|
||||
NAME STATUS ROLES AGE VERSION
|
||||
kmaster Ready master 12m v1.14.3-k3s.1
|
||||
knode1 Ready worker 103s v1.14.3-k3s.1
|
||||
knode1 Ready worker 103s v1.14.3-k3s.1
|
||||
```
|
||||
|
||||
至此，我们已经搭建了一个三节点的 Kubernetes 集群。
|
||||
|
||||
### K3s 的彩蛋
|
||||
|
||||
如果执行 `kubectl get pods --all-namespaces`，就会看到其它服务的一些 pod，比如 [Traefik][6]。Traefik 在这里起到是反向代理和负载均衡器的作用，它可以让流量从单个入口进入集群后引导到集群中的各个服务。Kubernetes 支持这种机制，但 Kubernetes 本身不提供这个功能，因此 Traefik 是一个不错的选择，K3s 安装后立即可用的优点也得益于此。
|
||||
|
||||
在后续的文章中，我们会继续探讨 Traefik 在 Kubernetes ingress 中的应用，以及在集群中部署其它组件。敬请关注。
|
||||
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via: https://opensource.com/article/20/3/kubernetes-raspberry-pi-k3s
|
||||
|
||||
作者：[Lee Carpenter][a]
|
||||
选题：[lujun9972][b]
|
||||
译者：[HankChow](https://github.com/HankChow)
|
||||
校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
|
||||
|
||||
[a]: https://opensource.com/users/carpie
|
||||
[b]: https://github.com/lujun9972
|
||||
[1]: https://opensource.com/sites/default/files/styles/image-full-size/public/lead-images/ship_wheel_gear_devops_kubernetes.png?itok=xm4a74Kv (A ship wheel with someone steering)
|
||||
[2]: https://opensource.com/resources/what-is-kubernetes
|
||||
[3]: https://k3s.io/
|
||||
[4]: https://carpie.net/articles/headless-pi-with-static-ip-wired-edition
|
||||
[5]: https://kubernetes.io/docs/tasks/tools/install-kubectl/
|
||||
[6]: https://traefik.io/
|
||||
Loading…
Reference in New Issue
Block a user