alpine的ansible镜像，alpineansible镜像

使用apk add ansible即可在alpine镜像中田间ansible服务。

添加步骤

在alpine中使用ansible需要如下几步

步骤	说明	命令
步骤1	apk更新	apk update
步骤2	添加ansible	apk add ansible
步骤3	添加openssh用于ssh-keygen等操作	apk add openssh
步骤4	设定ansible的hosts	mkdir -p /etc/ansible; echo “localhost” >/etc/ansible/hosts
步骤5	设定ssh的key-pair	ssh-keygen -t rsa -P “” -f ~/.ssh/id_rsa
步骤6	删除apk的cache	rm -rf /var/cache/apk/*

Dockerfile

在Dockerfile中添加上面的语句：

#update apk for install
RUN apk update

#install ansible and openssh
RUN apk add ansible openssh

#init ansible hosts file
RUN mkdir -p /etc/ansible
RUN echo "localhost" >/etc/ansible/hosts

#init rsa ssh key pair
RUN ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa

#delete cache files 
RUN rm -rf /var/cache/apk/*

使用镜像

拉取镜像

大概103M左右

[root@occluster ~]# docker pull liumiaocn/ansible
Using default tag: latest
Trying to pull repository docker.io/liumiaocn/ansible ... 
latest: Pulling from docker.io/liumiaocn/ansible
ff3a5c916c92: Already exists 
42a81541f983: Pull complete 
86602ac17bcb: Pull complete 
73cb14e49a3f: Pull complete 
bdfcad59d746: Pull complete 
455ffeaa5bf1: Pull complete 
dff32643cfa5: Pull complete 
Digest: sha256:46284f3d3b9e3880f9b65fa6b1fb225b19bc88222badf74aa85936aabc24090f
Status: Downloaded newer image for docker.io/liumiaocn/ansible:latest
[root@occluster ~]# 
[root@occluster ~]# docker images |grep ansible
docker.io/liumiaocn/ansible                  latest              8a5cfdf8243f        Less than a second ago   103 MB
[root@occluster ~]#

使用

进行版本确认

[root@occluster ~]# docker run -it --name ansible liumiaocn/ansible sh
/ # ansible --version
ansible 2.4.1.0
  config file = None
  configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python2.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 2.7.14 (default, Dec 14 2017, 15:51:29) [GCC 6.4.0]
/ # 

与宿主机(192.168.163.172)进行沟通，事先设定ssh通路，可以使用ssh-copy-id

/ # ssh-copy-id 192.168.163.172
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.163.172 (192.168.163.172)' can't be established.
ECDSA key fingerprint is SHA256:uh84Xw56LhiCXb1b0uFbX/CoFhkqHGZjtmLwl3qkTOY.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
expr: warning: '^ERROR: ': using '^' as the first character
of a basic regular expression is not portable; it is ignored
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.163.172's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh '192.168.163.172'"
and check to make sure that only the key(s) you wanted were added.

/ #

ssh通路确认

/ # ssh 192.168.163.172 hostname
occluster
/ # 

ansible动作确认

/ # echo "192.168.163.172" >>/etc/ansible/hosts
/ # ansible 192.168.163.172 -m ping
192.168.163.172 | SUCCESS => {
    "changed": false, 
    "failed": false, 
    "ping": "pong"
}
/ #