在alpine镜像中添加ansible服务的方法

使用apk add ansible即可在alpine镜像中添加ansible服务。

添加步骤

在alpine中使用ansible需要如下几步

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) cant 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@192.168.163.172s 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” } / #

总结

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