Created by gh-md-tochtml
安裝 DC/OS 須要準備 1 臺 bootstrap node (這個就是咱們的工做機), 1臺 或多臺Mesos master nodes, 1 臺 或多臺 Mesos Agents。它們的配置需求也不大同樣。node
通常可用咱們的開發機用作 boostrap node,須要至少 2 cores, 16 G RAM, 60 G HDD,且在其上裝下以下軟件:linux
若是使用 DC/OS CLI 的話,須要安裝 Python, pip, virtualenv。 pip 須要配置一下,使其能夠從 PyPI 或者咱們本身的私有 PyPI 下載安裝包git
一個 HA 的負載均衡,好比 HAProxy,用於將 80,443,8080,8181,2181,5050 等 TCP 端口均衡到全部的 mesos master 節點上github
一個未加密的 SSH key ,用它來訪問全部的集羣節點。目前,加密的還不支持web
接下來對開發機作以下配置:docker
一、新建 genconf
目錄shell
$ mkdir -p genconf
json
二、在 genconf
目錄下建立 ip-detect
腳本文件,在安裝 DC/OS 的時候,就是經過它進行找到 Mesos master,Agent 進行自動綁定 5050, 5051 等端口的。很重要bootstrap
官方提供的版本在咱們的環境中不可用,因此須要修改一下:
#!/usr/bin/env bash
set -o nounset -o errexit
MASTER_IP=10.221.82.185
# 官方版本
# echo $(/usr/sbin/ip route show to match 10.221.82.185 | grep -Eo '[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}' | tail -1)
# 內部使用版本
echo $(ip -d route get 10.221.82.185 | egrep -o 'src ([0-9.]*)' | grep -o '[0-9.]*')
三、建立配置文件並保存爲 genconf/config.yaml
示例參考以下:
---
agent_list:
- 10.221.78.22
- 10.221.78.23
- 10.221.78.26
bootstrap_url: file:///opt/dcos_install_tmp
cluster_name: shgq-chenqiang-dcos
exhibitor_storage_backend: static
ip_detect_filename: /genconf/ip-detect
log_directory: /genconf/logs
master_discovery: static
master_list:
- 10.221.82.185
- 10.221.82.186
- 10.221.82.187
oauth_enabled: 'false'
process_timeout: 10000
resolvers:
- 10.121.32.85
- 10.121.32.86
ssh_port: 22
ssh_user: root
四、複製 ssh key 到 genconf
目錄下,並命令爲 genconf/ssh_key
$ cp <path-to-key> genconf/ssh_key && chmod 0600 genconf/ssh_key
Cluster nodes 主要是指集羣中的 Master nodes 和 Agent nodes
須要至少 4 cores, 32 G RAM, 120 G HDD,因爲在 master 節點上會有不少混合負載,好比 replicated log 和 ZooKeeper,還有一些是文件同步操做,比較耗 I/O,有條件的話,可使用:
固態硬盤
有 BBU 的 RAID 卡
有回寫模式的 RAID 緩存配置
須要至少 2 cores, 16 G RAM, 60 G HDD,它必須須要以下的東西:
/var
目錄,這個主要存放 Docker 和 Mesos Containerizer 的 sandbox操做系統使用最新的 centos 7.2
$ sudo yum upgrade -y
禁掉防火牆
$ sudo systemctl stop firewalld && sudo systemctl disable firewalld
DC/OS 安裝在 /opt/mesosphere
目錄下,須要確保它不是在一個 LVM 的邏輯卷或者共享的存儲上。
高級安裝的話,須要在 Cluster nodes 上, 即 Master , Agent 節點上完成以下事項:
須要有 UnZip, GNU tar, XZ Utils 等數據壓縮工具
$ sudo yum install -y tar xz unzip curl ipset
禁掉 SELinux,將 nogroup 添加到 Mesos masters 和 Agents 中,而後重啓機器
$ sudo sed -i s/SELINUX=enforcing/SELINUX=permissive/g /etc/selinux/config &&
sudo groupadd nogroup &&
sudo reboot
一、爲簡單方便,咱們能夠在新的全部 Cluster nodes 上部署 dep
tag 便可。
$ ansible-playbook --limit=nodes -i hosts/xxx mesos.yaml --tags unguard
二、DC/OS 須要使用dns port 53, 因爲在 dep 中 dnsmasq 會佔用該端口, 因此暫停該端口。
$ ansible nodes -i hosts/xxx -m shell -a "systemctl stop dnsmasq"
一、下載或經過本項目生成 DC/OS Installer 到開發機的 根目錄。本身生成的話,可參見官方 README.md
進行。
$ curl -O https://downloads.dcos.io/dcos/EarlyAccess/dcos_generate_config.sh
二、接下來能夠經過網頁安裝或者命令行安裝。
網頁安裝較簡單,只須要執行以下命令,而後打開瀏覽器進入 http://<bootstrap-node-public-ip>:9000
便可:
$ sudo bash dcos_generate_config.sh --web
咱們採用命令行安裝,將執行以下命令:
Step1:在 home 目錄運行 DC/OS Installer 腳原本生成 DC/OS Build ,這個腳本會提取出一個 Docker 容器,並將經過的 DC/OS 安裝文件爲咱們本地環境生成定製化的 DC/OS Build。 這個 Build 會放在 ./genconf/serve/
目錄下。
$ sudo bash dcos_generate_config.sh --genconf
執行該命令時,輸出大概是這樣的。
Extracting image from this script and loading into docker daemon, this step can take a few minutes
dcos-genconf.e060aa49ac4ab62d5e-1e14856f55e5d5d07b.tar
Running mesosphere/dcos-genconf docker with BUILD_DIR set to /home/centos/genconf
====> EXECUTING CONFIGURATION GENERATION
...
這個時候,咱們的目錄結構大概是這樣的:
├── dcos-genconf.<HASH>.tar
├── dcos_generate_config.sh
├── genconf
│ ├── config.yaml
│ ├── ip-detect
│ ├── cluster_packages.json
│ ├── serve
│ ├── ssh_key
│ ├── state
Step2:安裝一些集羣所需的必要包
$ sudo bash dcos_generate_config.sh --install-prereqs
輸出示例:
Running mesosphere/dcos-genconf docker with BUILD_DIR set to /home/centos/genconf
====> dcos_installer.action_lib.prettyprint:: ====> EXECUTING INSTALL PREREQUISITES
====> dcos_installer.action_lib.prettyprint:: ====> START install_prereqs
====> dcos_installer.action_lib.prettyprint:: ====> STAGE install_prereqs
====> dcos_installer.action_lib.prettyprint:: ====> STAGE install_prereqs
====> dcos_installer.action_lib.prettyprint:: ====> END install_prereqs with returncode: 0
====> dcos_installer.action_lib.prettyprint:: ====> SUMMARY
====> dcos_installer.action_lib.prettyprint:: 2 out of 2 hosts successfully completed install_prereqs stage.
Step3: 執行 preflight
校驗安裝過程
$ sudo bash dcos_generate_config.sh --preflight
想看得詳細一點的話,能夠加上 -v
參數。
示例輸出:
Running mesosphere/dcos-genconf docker with BUILD_DIR set to /home/centos/genconf
====> dcos_installer.action_lib.prettyprint:: ====> EXECUTING PREFLIGHT
====> dcos_installer.action_lib.prettyprint:: ====> START run_preflight
====> dcos_installer.action_lib.prettyprint:: ====> STAGE preflight
====> dcos_installer.action_lib.prettyprint:: ====> STAGE preflight
====> dcos_installer.action_lib.prettyprint:: ====> STAGE preflight_cleanup
====> dcos_installer.action_lib.prettyprint:: ====> STAGE preflight_cleanup
====> dcos_installer.action_lib.prettyprint:: ====> END run_preflight with returncode: 0
====> dcos_installer.action_lib.prettyprint:: ====> SUMMARY
====> dcos_installer.action_lib.prettyprint:: 2 out of 2 hosts successfully completed run_preflight stage.
Step 4: 開始安裝 DC/OS 到咱們的集羣中了
$ sudo bash dcos_generate_config.sh --deploy
示例輸出:
Running mesosphere/dcos-genconf docker with BUILD_DIR set to /home/centos/genconf
====> dcos_installer.action_lib.prettyprint:: ====> EXECUTING DC/OS INSTALLATION
====> dcos_installer.action_lib.prettyprint:: ====> START deploy_master
====> dcos_installer.action_lib.prettyprint:: ====> STAGE deploy_master
====> dcos_installer.action_lib.prettyprint:: ====> STAGE deploy_master_cleanup
====> dcos_installer.action_lib.prettyprint:: ====> END deploy_master with returncode: 0
====> dcos_installer.action_lib.prettyprint:: ====> SUMMARY
====> dcos_installer.action_lib.prettyprint:: 1 out of 1 hosts successfully completed deploy_master stage.
====> dcos_installer.action_lib.prettyprint:: ====> START deploy_agent
====> dcos_installer.action_lib.prettyprint:: ====> STAGE deploy_agent
====> dcos_installer.action_lib.prettyprint:: ====> STAGE deploy_agent_cleanup
====> dcos_installer.action_lib.prettyprint:: ====> END deploy_agent with returncode: 0
====> dcos_installer.action_lib.prettyprint:: ====> SUMMARY
====> dcos_installer.action_lib.prettyprint:: 1 out of 1 hosts successfully completed deploy_agent stage.
Step5:運行 DC/OS 診斷腳原本覈實服務是否起來並在運行
$ sudo bash dcos_generate_config.sh --postflight
示例輸出:
unning mesosphere/dcos-genconf docker with BUILD_DIR set to /home/centos/genconf
====> dcos_installer.action_lib.prettyprint:: ====> EXECUTING POSTFLIGHT
====> dcos_installer.action_lib.prettyprint:: ====> START run_postflight
====> dcos_installer.action_lib.prettyprint:: ====> STAGE postflight
====> dcos_installer.action_lib.prettyprint:: ====> STAGE postflight
====> dcos_installer.action_lib.prettyprint:: ====> STAGE postflight_cleanup
====> dcos_installer.action_lib.prettyprint:: ====> STAGE postflight_cleanup
====> dcos_installer.action_lib.prettyprint:: ====> END run_postflight with returncode: 0
====> dcos_installer.action_lib.prettyprint:: ====> SUMMARY
====> dcos_installer.action_lib.prettyprint:: 2 out of 2 hosts successfully completed run_postflight stage.
Step6:這個時候能夠去頁面上 http://<master-public-ip>:8181/exhibitor/v1/ui/index.html
看看 ZK 了
Step7:此時安裝完成, 能夠登陸 DC/OS (http://<public-master-ip>/
)的頁面一睹芳容了。