安装ansible

安装ansible的机器必须可以ssh到集群中节点

rpm -iUvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm  
yum install -y ansible

设置key认证登录
在安装ansible的机器上生成私钥

ssh-keygen -t rsa -f /root/.ssh/id_rsa -q -P ""

将 ~/.ssh/id_rsa.pub 的内容拷贝到要添加的节点上的 ~/.ssh/authorized_keys中 (如果没有新建)

部署集群（只是添加节点则不用此步骤）
下载dcos installer

curl -O https://downloads.dcos.io/dcos/stable/dcos_generate_config.sh

将下载完成的dcos_generate_config.sh文件拷贝到dcos_ansible的roles/deploy/files/ 目录下，将此目录下的ssh_key替换为部署集群所需的私钥（与上面ansible生成的id_rsa不同）

配置dcos_ansible的 group_vars/all 文件

network: enp0s8
clustername: dcos
sshuser: root
agent1: 192.168.56.103
master1: 192.168.56.106

其中network为节点的私网网卡名 clustername为集群名称
sshuser为ssh的用户名 agent1,master1为部署集群时添加的集群节点

配置hosts文件

[bootstrap]
192.168.56.104

[masters]
192.168.56.106

[agents]
192.168.56.103

[add]
192.168.56.107

分别配置以上集中角色的ip，将原有ip删去。bootstrap为部署集群的bootstrap节点，masters为master节点，agents为部署时的slave节点。add是后来添加的slave节点，部署时不需要配置。

配置完以上文件后在dcos_ansible目录下执行
ansible-playbook -i hosts deploy.yml –verbose
开始部署，可以看到ansible执行情况

添加节点
若往已有集群添加节点需要有部署集群时备份的dcos-install.tar文件。
将dcos-install.tar文件复制到ansible机器上的
/tmp/{{ clustername }}/dcos-install.tar下。

配置/root/dcos_ansible-master-5/hosts文件
将待添加的ip加入[add]下

配置完以上文件后在dcos_ansible目录下执行
ansible-playbook -i hosts add.yml --verbose
开始部署，可以看到ansible执行情况

dcos_ansible

requirements

centos 7
ansible installed

deploy

files to be config

hosts
config.yaml
group_vars/all
ssh_key

group_vars/all:

---
network: enp0s8
clustername: dcos
sshuser: root

network represents for name of private network used in the cluster.

hosts:

[bootstrap]
192.168.56.104
[masters]
192.168.56.106
[agents]
192.168.56.103
#ips...
[add]
192.168.56.107

replace ip under each role with your own ip.

config.yaml:

---
agent_list:
- 192.168.56.103
- 192.168.56.107
bootstrap_url: file:///opt/dcos_install_tmp
cluster_name: {{clustername}}
exhibitor_storage_backend: static
ip_detect_filename: /genconf/ip-detect
master_discovery: static
master_list:
- 192.168.56.106
process_timeout: 10000
resolvers:
- 8.8.8.8
- 114.114.114.114
ssh_port: 22
ssh_user: {{sshuser}}

config agent_list and master_list in config.yaml

ssh_key
replace ssh_key with your own private key rename it ssh_key.

after configration, run
sh beforeDeploy.sh and sh deploy.sh to start deploy.

add node

you need a dcos-install.tar file to add nodes to a deployed cluster, which you may backup when deploying cluster. if you don't have it, ssh to bootstrap node, change directory into genconf/serve, run
sudo tar cf dcos-install.tar *, and scp the new created dcos-install.tar file to /tmp/{{ clustername }}/dcos-install.tar directory of the node you installed ansible.

files to be config

hosts

hosts
add the ip to be added under [add]

after configration, run sh add.sh to start add node.

Thanks.

corersky / CUDCOS_auto_deployment

dcos_ansible

requirements

deploy

add node

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