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Rancher - Container Management Application
======
Docker is a cutting-edge software used for containerization, that is used in most of IT companies to reduce infrastructure cost.
By default docker comes without any GUI, which is easy for Linux administrator to manage it and its very difficult for developers to manage. When its come to production then its very difficult for Linux admin too. So, what would be the best solution to manage the docker without any trouble.
The only way is GUI. The Docker API has allowed third party applications to interfacing with Docker. There are many docker GUI applications available in the market. We already wrote an article about Portainer application. Today we are going to discuss about Rancher.
Containers make software development easier, enabling you to write code faster and run it better. However, running containers in production can be hard.
**Suggested Read :** [Portainer A Simple Docker Management GUI][1]
### What is Rancher
[Rancher][2] is a complete container management platform that makes it easy to deploy and run containers in production on any infrastructure. It provides infrastructure services such as multi-host networking, global and local load balancing, and volume snapshots. It integrates native Docker management capabilities such as Docker Machine and Docker Swarm. It offers a rich user experience that enables devops admins to operate Docker in production at large scale.
Navigate to following article for docker installation on Linux.
**Suggested Read :**
**(#)** [How to install Docker in Linux][3]
**(#)** [How to play with Docker images on Linux][4]
**(#)** [How to play with Docker containers on Linux][5]
**(#)** [How to Install, Run Applications inside Docker Containers][6]
### Rancher Features
* Set up Kubernetes in two minutes
* Launch apps with single click (90 popular Docker applications)
* Deploy and manage Docker easily
* complete container management platform for production environment
* Quickly deploy containers in production
* Automate container deployment and operations with a robust technology
* Modular infrastructure services
* Rich set of orchestration tools
* Rancher supports multiple authentication mechanisms
### How to install Rancher
Rancher installation is very simple since its runs as a lightweight Docker containers. Rancher is deployed as a set of Docker containers. Running Rancher is as simple as launching two containers. One container as the management server and another container on a node as an agent. Simple run the following command to deploy rancher on Linux.
Rancher server offers two different package tags like `stable` & `latest`. The below commands will pull appropriate build rancher image and install on your system. It will only take a couple of minutes for Rancher server to start up.
* `stable` : This tag will be their latest development builds. These builds will have been validated through rancher CI automation framework which is not advisable for deployment in production.
* `latest` : Its a latest stable release version which is recommend for production environment.
Rancher installation comes with many varieties. In this tutorial we are going to discuss about two variants.
* Install rancher server in a single container (Inbuilt Rancher Database)
* Install rancher server in a single container (External Database)
### Method-1
Run the following commands to install rancher server in a single container (Inbuilt Rancher Database).
```
$ sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server:stable
$ sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server:latest
```
### Method-2
Instead of using the internal database that comes with Rancher server, you can start Rancher server pointing to an external database. First create required database, database user for the same.
```
> CREATE DATABASE IF NOT EXISTS cattle COLLATE = 'utf8_general_ci' CHARACTER SET = 'utf8';
> GRANT ALL ON cattle.* TO 'cattle'@'%' IDENTIFIED BY 'cattle';
> GRANT ALL ON cattle.* TO 'cattle'@'localhost' IDENTIFIED BY 'cattle';
```
Run the following command to start Rancher connecting to an external database.
```
$ sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server \
--db-host myhost.example.com --db-port 3306 --db-user username --db-pass password --db-name cattle
```
If you want to test Rancher 2.0 use the following command to start.
```
$ sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/server:preview
```
### Access & Setup Rancher Through GUI
Navigate to the following URL `http://hostname:8080` or `http://server_ip:8080` to access rancher GUI.
[![][7]![][7]][8]
### How To Register the Host
Register your host URL which allow hosts to connect to the Rancher API. Its one time setup.
To do, Click “Add a Host” link under the main menu or Go to >> Infrastructure >> Add Hosts then hit `save` button.
[![][7]![][7]][9]
By default access control authentication is disabled in rancher so first we have to enable the access control authentication through available method, otherwise anyone can access the GUI.
Go to >> Admin >> Access Control and input the following values and finally hit `Enable Authentication` button to enable it. In my case im enabling via `local authentication`
* **`Login UserName`** Input your descried login username
* **`Full Name`** Input your full name
* **`Password`** Input your descried password
* **`Confirm Password`**Confirm the password once again
[![][7]![][7]][10]
Logout and login back with your new login credential.
[![][7]![][7]][11]
Now, i can see the local authentication is enabled.
[![][7]![][7]][12]
### How To Add Hosts
After register your host, it will take you to next page where you can choose Linux machines from varies cloud providers. We are going to add the host that is running Rancher server, so select the `custom` option and input the required information.
Enter your server public IP address in the 4th step and run the command which is displaying in the 5th step into your terminal then finally hit `close` button.
```
$ sudo docker run -e CATTLE_AGENT_IP="192.168.1.112" --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.9 http://192.168.1.112:8080/v1/scripts/3F8217A1DCF01A7B7F8A:1514678400000:D7WeLUcEUnqZOt8rWjrvoaUE
INFO: Running Agent Registration Process, CATTLE_URL=http://192.168.1.112:8080/v1
INFO: Attempting to connect to: http://66.70.189.137:8080/v1
INFO: http://192.168.1.112:8080/v1 is accessible
INFO: Inspecting host capabilities
INFO: Boot2Docker: false
INFO: Host writable: true
INFO: Token: xxxxxxxx
INFO: Running registration
INFO: Printing Environment
INFO: ENV: CATTLE_ACCESS_KEY=A35151AB87C15633DFB4
INFO: ENV: CATTLE_AGENT_IP=192.168.1.112
INFO: ENV: CATTLE_HOME=/var/lib/cattle
INFO: ENV: CATTLE_REGISTRATION_ACCESS_KEY=registrationToken
INFO: ENV: CATTLE_REGISTRATION_SECRET_KEY=xxxxxxx
INFO: ENV: CATTLE_SECRET_KEY=xxxxxxx
INFO: ENV: CATTLE_URL=http://192.168.1.112:8080/v1
INFO: ENV: DETECTED_CATTLE_AGENT_IP=172.17.0.1
INFO: ENV: RANCHER_AGENT_IMAGE=rancher/agent:v1.2.9
INFO: Deleting container rancher-agent
INFO: Launched Rancher Agent: 3415a1fd101f3c57d9cff6aef373c0ce66a3e20772122d2ca832039dcefd92fd
```
[![][7]![][7]][13]
Wait few seconds then the newly added host will be visible. To bring this Go to Infrastructure >> Hosts page.
[![][7]![][7]][14]
### How To View Containers
Just navigate the following location to view a list of running containers. Go to >> Infrastructure >> Containers.
[![][7]![][7]][15]
### How To Create Container
Its very simple, just navigate the following location to create a container.
Go to >> Infrastructure >> Containers >> “Add Container” and input the required information as per your requirement. To test this, im going to create Centos container with latest OS.
[![][7]![][7]][16]
The same has been listed here. Infrastructure >> Containers
[![][7]![][7]][17]
Hit on the `Container` name to view the container performances information like CPU, memory, network and storage.
[![][7]![][7]][18]
To manage the container such as stop, start, clone, restart, etc. Choose the particular container then hit `Three dot's` button in the left side of the container or `Actions` button to perform.
[![][7]![][7]][19]
If you want console access of the container, just hit `Execute Shell` option in the action button.
[![][7]![][7]][20]
### How To Deploy Container From Application Catalog
Rancher provides a catalog of application templates that make it easy to deploy in single click. Its maintain popular applications (nearly 90) contributed by the Rancher community.
[![][7]![][7]][21]
Go to >> Catalog >> All >> Choose the required application >> Finally hit “Launch” button to deploy.
[![][7]![][7]][22]
--------------------------------------------------------------------------------
via: https://www.2daygeek.com/rancher-a-complete-container-management-platform-for-production-environment/
作者:[Magesh Maruthamuthu][a]
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://www.2daygeek.com/author/magesh/
[1]:https://www.2daygeek.com/portainer-a-simple-docker-management-gui/
[2]:http://rancher.com/
[3]:https://www.2daygeek.com/install-docker-on-centos-rhel-fedora-ubuntu-debian-oracle-archi-scentific-linux-mint-opensuse/
[4]:https://www.2daygeek.com/list-search-pull-download-remove-docker-images-on-linux/
[5]:https://www.2daygeek.com/create-run-list-start-stop-attach-delete-interactive-daemonized-docker-containers-on-linux/
[6]:https://www.2daygeek.com/install-run-applications-inside-docker-containers/
[7]:data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
[8]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-1.png
[9]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-2.png
[10]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-3.png
[11]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-3a.png
[12]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-4.png
[13]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-5.png
[14]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-6.png
[15]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-7.png
[16]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-8.png
[17]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-9.png
[18]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-10.png
[19]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-11.png
[20]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-12.png
[21]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-13.png
[22]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-14.png

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Rancher - 容器管理平台
======
Docker作为一款容器化应用的新兴软件 被大多数IT公司使用来减少基础设施平台建设的成本。
通常没有GUI的docker软件对于Linux管理员很友好但是对于开发者来说很不友好。当把它搬到生产环境上来那么它对Linux管理员来说也相当不友好。那么什么最佳解决方案可以轻松的管理docker。
仅有的方式那就是提供GUI。Docker API允许第三方平台接入Docker。在市场上有许多docker GUI应用可用。我们已经写了一篇关于Portainer应用的文章。今天我们来讨论另一个应用Rancher。
容器让软件开发更容易,让开发者写代码更快且更好的运行它们。但是,在生产环境上运行容器却很困难。
**推荐阅读 :** [Portainer A Simple Docker Management GUI][1]
### What is Rancher
[Rancher][2]是一个完整的容器管理平台在任意基础设施平台的生产环境上它让容器的部署和运行更容易。它提供了诸如多主机网络全局、局部负载均衡和卷快照等基础设施服务。它整合原生Docker的管理能力如Docker Machine和Docker Swarm。它提供了丰富的用户体验让devops管理员以一个更大的规模在生产环境上运行Docker。
以下文章导航到在Linux系统上安装Docker。
**推荐阅读 :**
**(#)** [How to install Docker in Linux][3]
**(#)** [How to play with Docker images on Linux][4]
**(#)** [How to play with Docker containers on Linux][5]
**(#)** [How to Install, Run Applications inside Docker Containers][6]
### Rancher 特性
* 在两分钟内安装Kubernetes。
* 单机启动应用90个流行的Docker应用
* 部署和管理Docker更容易。
* 全面的生产级容器管理平台。
* 在生产环境上快速部署容器。
* 强大的自动部署和运营容器技术。
* 模块化基础设施服务。
* 丰富的编排工具。
* Rancher支持多种认证机制。
### 怎样安装Rancher
由于Rancher是以轻量级的Docker容器方式运行所以它的安装非常简单。Rancher是由一组Docker容器部署。只需要简单的启动两个容器就能运行Rancher。一个容器用作管理服务另一个容器在各个节点上作为代理。在Linux系统下简单的运行下列命令就能部署Rancher。
Rancher服务提供了两个不同的安装包标签如`stable`和`latest`。下列命令将会拉去适合的rancher镜像并安装到你的操作系统上。Rancher server仅需要几分钟就可以启动。
* `latest` : 这个标签是他们的最新开发构建。这些构建将通过rancher CI的自动化框架进行验证不建议在生产环境使用。
* `stable` : 这是最新的稳定发行版本,推荐在生产环境使用。
Rancher的安装方法有多种。在这边教程中我们仅讨论两种方法。
* 以单一容器的方式安装Rancher内嵌Rancher数据库
* 以单一容器的方式安装Rancher外部数据库
### 方法-1
运行下列命令以单一容器的方式安装rancher服务内嵌数据库
```
$ sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server:stable
$ sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server:latest
```
### 方法-2
你可以开始Rancher服务时指向外部数据库而不是使用内部数据库。首先创建所需的数据库数据库用户为同一个。
```
> CREATE DATABASE IF NOT EXISTS cattle COLLATE = 'utf8_general_ci' CHARACTER SET = 'utf8';
> GRANT ALL ON cattle.* TO 'cattle'@'%' IDENTIFIED BY 'cattle';
> GRANT ALL ON cattle.* TO 'cattle'@'localhost' IDENTIFIED BY 'cattle';
```
运行下列命令开始Rancher去连接外部数据库。
```
$ sudo docker run -d --restart=unless-stopped -p 8080:8080 rancher/server \
--db-host myhost.example.com --db-port 3306 --db-user username --db-pass password --db-name cattle
```
如果你想测试Rancher 2.0,使用下列的命令去开始。
```
$ sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/server:preview
```
### 通过GUI访问 & 安装Rancher
浏览器输入 `http://hostname:8080` or `http://server_ip:8080` 去访问 rancher GUI.
![03efbb176e40781f5e2231fa83dfaa8a.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p27)
### 怎样注册主机
注册你的主机URL允许去连接到Rancher API。这是一次性设置。
接下来,点击主菜单下面的`Add a Host`链接或者点击主菜单上的INFRASTRUCTURE >> Add Hosts点击保存按钮。
![ef2ea6c909315f19fd0e112761e9cee4.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p9)
在rancher里默认访问控制认证机制是没有打开的因此我们首先需要通过一些方法打开访问控制认证否则任何人都不能访问GUI。
点击 >> Admin >> Access Control , 输入下列的值最后点击`打开认证`按钮去打开它。以我的案例,我通过`本地认证`的方式打开。
* **`Login UserName`** 输入你期望的登录名
* **`Full Name`** 输入你的全名
* **`Password`** 输入你期望的密码
* **`Confirm Password`** 再一次确认密码
![f7c28cc334daccc0d9acf78950818251.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p11)
注销然后使用新的登录凭证重新登陆
![5657104cbd4822c111bd117a7f928826.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p12)
现在,我能看到本地认证已经被打开。
![458648bd4ba0cee4b8e716825b5356f2.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p13)
### 怎样添加主机
点击注册你的主机后它将带你进入下一个页面在那里你能选择不同云服务提供商的Linux主机。我们将添加一个主机运行Rancher服务因此选择`自定义`选项然后输入必要的信息。
在第四部输入你服务器的公有IP运行第5步列出的命令最后点击`close`按钮。
![38af35f3b207f4ba1c826ecf160aefee.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p14)
```
$ sudo docker run -e CATTLE_AGENT_IP="192.168.56.2" --rm --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.2.11 http://192.168.56.2:8080/v1/scripts/16A52B9BE2BAB87BB0F5:1546214400000:ODACe3sfis5V6U8E3JASL8jQ
INFO: Running Agent Registration Process, CATTLE_URL=http://192.168.56.2:8080/v1
INFO: Attempting to connect to: http://192.168.56.2:8080/v1
INFO: http://192.168.56.2:8080/v1 is accessible
INFO: Configured Host Registration URL info: CATTLE_URL=http://192.168.56.2:8080/v1 ENV_URL=http://192.168.56.2:8080/v1
INFO: Inspecting host capabilities
INFO: Boot2Docker: false
INFO: Host writable: true
INFO: Token: xxxxxxxx
INFO: Running registration
INFO: Printing Environment
INFO: ENV: CATTLE_ACCESS_KEY=9946BD1DCBCFEF3439F8
INFO: ENV: CATTLE_AGENT_IP=192.168.56.2
INFO: ENV: CATTLE_HOME=/var/lib/cattle
INFO: ENV: CATTLE_REGISTRATION_ACCESS_KEY=registrationToken
INFO: ENV: CATTLE_REGISTRATION_SECRET_KEY=xxxxxxx
INFO: ENV: CATTLE_SECRET_KEY=xxxxxxx
INFO: ENV: CATTLE_URL=http://192.168.56.2:8080/v1
INFO: ENV: DETECTED_CATTLE_AGENT_IP=172.17.0.1
INFO: ENV: RANCHER_AGENT_IMAGE=rancher/agent:v1.2.11
INFO: Launched Rancher Agent: e83b22afd0c023dabc62404f3e74abb1fa99b9a178b05b1728186c9bfca71e8d
```
等待几秒钟后新添加的主机将会出现。点击INFRASTRUCTURE >> Hosts 页面。
![4620832d7f277d6d84ace7ca6d486d17.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p15)
### 怎样查看容器
只需要点击下列位置就能列出所有容器。点击 >> INFRASTRUCTURE >> Containers
![f62d012ee89c9c2bee58fe1204eb0a65.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p16)
### 怎样创建容器
非常简单, 只需点击下列位置就能创建容器。
点击 >> INFRASTRUCTURE >> Containers >> “Add Container” 然后输入每个你需要的信息。 方便测试, 我将创建一个latest标签的Centos容器。
![4c6ff6b04c543b573e2aa1330de087d2.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p21)
在同样的列表位置,点击 INFRASTRUCTURE >> Containers
![317f86d0860ad46576bedefe8c26f0a3.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p22)
点击`Container`名展示容器的性能信息如CPU内存网络和存储。
![26e909d243f490b8fc856eadeb4e2f7d.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p19)
选择特定容器,然后点击最右边的`三点`按钮或者点击`Actions`按钮对容器进行管理,如停止,启动,克隆,重启等。
![0aa0e91f32426274c3d209c4e4dc5c46.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p23)
如果你想控制台访问容器只需要点击action按钮中的`Execute Shell`选项即可。
![83c3b6c9e959fa8d8946e6449e854e43.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p24)
### 怎样从应用目录部署容器
Rancher 提供了一个应用模版目录,让部署变的很容易,只需要单击一下就可以。
它维护了多数流行应用这些应用由Rancher社区贡献。
![d38aeb44d759a7eb4e787c5a273d5bfa.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p25)
点击 >> Catalog >> All >> 选择你需要的应用 >> 最后点击运行去部署。
![aad6948878609c1605fcf1091395cc8b.png](evernotecid://362D54D6-01E1-4A00-A4F0-91F1094EAA56/appyinxiangcom/11631496/ENResource/p26)
--------------------------------------------------------------------------------
浏览: https://www.2daygeek.com/rancher-a-complete-container-management-platform-for-production-environment/
作者:[Magesh Maruthamuthu][a]
译者:[arrowfeng](https://github.com/arrowfeng)
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://www.2daygeek.com/author/magesh/
[1]:https://www.2daygeek.com/portainer-a-simple-docker-management-gui/
[2]:http://rancher.com/
[3]:https://www.2daygeek.com/install-docker-on-centos-rhel-fedora-ubuntu-debian-oracle-archi-scentific-linux-mint-opensuse/
[4]:https://www.2daygeek.com/list-search-pull-download-remove-docker-images-on-linux/
[5]:https://www.2daygeek.com/create-run-list-start-stop-attach-delete-interactive-daemonized-docker-containers-on-linux/
[6]:https://www.2daygeek.com/install-run-applications-inside-docker-containers/
[7]:data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7
[8]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-1.png
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[11]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-3a.png
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[18]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-10.png
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[21]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-13.png
[22]:https://www.2daygeek.com/wp-content/uploads/2018/02/Install-rancher-container-management-application-in-linux-14.png