我正在使用ec2.py
动态广告资源进行ansible配置。
我已将ec2.py
放在/etc/ansible/hosts
文件中,并将其标记为可执行文件。
我在ec2.ini
中也有/etc/ansible/hosts
个文件。
[ec2]
regions = us-west-2
regions_exclude = us-gov-west-1,cn-north-1
destination_variable = public_dns_name
vpc_destination_variable = ip_address
route53 = False
all_instances = True
all_rds_instances = False
cache_path = ~/.ansible/tmp
cache_max_age = 0
nested_groups = False
group_by_instance_id = True
group_by_region = True
group_by_availability_zone = True
group_by_ami_id = True
group_by_instance_type = True
group_by_key_pair = True
group_by_vpc_id = True
group_by_security_group = True
group_by_tag_keys = True
group_by_tag_none = True
group_by_route53_names = True
group_by_rds_engine = True
group_by_rds_parameter_group = True
以上是我的ec2.ini
文件
---
- hosts: localhost
connection: local
gather_facts: yes
vars_files:
- ../group_vars/dev_vpc
- ../group_vars/dev_sg
- ../hosts_vars/ec2_info
vars:
instance_type: t2.micro
tasks:
- name: Provisioning EC2 instance
local_action:
module: ec2
region: "{{ region }}"
key_name: "{{ key }}"
instance_type: "{{ instance_type }}"
image: "{{ ami_id }}"
wait: yes
group_id: ["{{ sg_npm }}", "{{sg_ssh}}"]
vpc_subnet_id: "{{ PublicSubnet }}"
source_dest_check: false
instance_tags: '{"Name": "EC2", "Environment": "Development"}'
register: ec2
- name: associate new EIP for the instance
local_action:
module: ec2_eip
region: "{{ region }}"
instance_id: "{{ item.id }}"
with_items: ec2.instances
- name: Waiting for NPM Server to come-up
local_action:
module: wait_for
host: "{{ ec2 }}"
state: started
delay: 5
timeout: 200
- include: ec2-configure.yml
现在配置脚本如下
- name: Configure EC2 server
hosts: tag_Name_EC2
user: ec2-user
sudo: True
gather_facts: True
tasks:
- name: Install nodejs related packages
yum: name={{ item }} enablerepo=epel state=present
with_items:
- nodejs
- npm
但是,在调用configure脚本时,第二个脚本会导致找不到主机。
如果我单独执行ec2-configure.yml
并且如果EC2服务器已经启动&运行然后它能够找到并配置它。
我添加了wait_for
以确保在调用ec2-configure.yml
之前实例处于运行状态。
如果有人能指出我的错误,我将不胜感激。感谢
答案 0 :(得分:6)
经过研究,我发现动态库存不会在剧本调用之间刷新,只有在您单独执行剧本时才会刷新。
但是,我能够使用add_host
命令来解决问题。
- name: Add Server to inventory
local_action: add_host hostname={{ item.public_ip }} groupname=webserver
with_items: webserver.instances
答案 1 :(得分:2)
使用ansible 2.0+,您可以刷新剧本中间的动态库存,如下所示:
- meta: refresh_inventory
要扩展一下,如果你的剧本中的缓存出现问题,那么你可以像这样使用它:
- name: Refresh the ec2.py cache
shell: "./inventory/ec2.py --refresh-cache"
changed_when: no
- name: Refresh inventory
meta: refresh_inventory
其中./inventory
是动态广告资源的路径,请相应调整。
希望这会对你有所帮助。
答案 2 :(得分:0)
Configure EC2 server
播放无法从EC2动态广告资源中找到任何主机,因为新实例是在播放手册的第一次播放中添加的 - 在同一次执行期间。在阅读广告资源时,小组tag_Name_EC2
并不存在,因此无法找到。
再次运行相同的剧本时Configure EC2 server
应该找到该组。
我们使用以下解决方法来指导用户处于这种情况。
首先,配置实例:
tasks:
- name: Provisioning EC2 instance
local_action:
module: ec2
...
register: ec2
然后在ec2-configure.yml
之前添加新剧本。该剧使用ec2
中注册的Provisioning EC2 instance
变量,如果启动任何实例,将失败并退出该剧本:
- name: Stop and request a re-run if any instances were launched
hosts: localhost
gather_facts: no
tasks:
- name: Stop if instances were launched
fail: msg="Re-run the playbook to load group variables from EC2 dynamic inventory for the just launched instances!"
when: ec2.changed
- include: ec2-configure.yml
答案 3 :(得分:0)
您还可以刷新缓存:
foobar/my-image:[branch]-latest
或者如果您使用Ansible主机文件:
ec2.py --refresh-cache