使用apk add ansible即可在alpine鏡像中添加ansible服務。
添加步驟
在alpine中使用ansible需要如下幾步
Dockerfile
在Dockerfile中添加上面的語句：
#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/*
使用鏡像
拉取鏡像
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
進行版本確認
[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]
/ #
與宿主機(192.168.163.172)進行溝通，事先設定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通路確認
/ # ssh 192.168.163.172 hostname
occluster
/ #
ansible動作確認
/ # 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"
}
/ #
總結
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