Day-51 ansible基础知识

1.什么是Ansible
可以通过一个命令行完成一系列的操作
2.Ansible基础架构?控制端 被控 inventory ad-hoc playbook 连接协议?


图片.png

注:查看帮助ansible-doc 模块名
/:ex
3.ansible配置文件优先级

ANSIBLE_CONFIG 
ansible.cfg                 #当前项目目录中
.ansible.cfg                #当前执行用户的家目录
/etc/ansible/ansible.cfg
[root@manager ~]# export ANSIBLE_CONFIG="/tmp/ansible.cfg" 
[root@manager ~]# touch /tmp/ansible.cfg


[root@manager ~]# mkdir /project1 
[root@manager ~]# cd /project1/ 
[root@manager project1]# touch ansible.cfg 
[root@manager project2]# ansible --version 
ansible 2.8.5  
config file = /project1/ansible.cfg


[root@manager /]# mkdir /project2 
[root@manager /]# cd /project2/ 
[root@manager project2]# touch ansible.cfg 
[root@manager project1]# ansible --version 
ansible 2.8.5  
config file = /project2/ansible.cfg

[root@manager tmp]# touch ~/.ansible.cfg 
[root@manager tmp]# ansible --version 
ansible 2.8.5  
config file = /root/.ansible.cfg.

4.ansible inventory主机清单?

#1.基于IP地址+密码的方式 
[root@manager ~]# mkdir /project1 
[root@m01 ~]# cp  /etc/ansible/ansible.cfg  ./project1 
[root@manager ~]# cd /project1/ 
[root@manager project1]# touch hosts
[root@manager project1]# vim hosts
[webservers] 
172.16.1.7 ansible_ssh_user='root' ansible_ssh_pass='1' 
172.16.1.8 ansible_ssh_user='root' ansible_ssh_pass='1'

2.场景二、基于密钥连接,需要先创建公钥和私钥,并下发公钥至被 控端 
[root@manager ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected] 
[root@manager ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
[root@manager project1] vim ansible.cfg
host_key_checking = False

#方式一、主机+端口+密钥 
[root@manager ~]# cat hosts 
[webservers] 
172.16.1.7 
172.16.1.8

3.场景三、主机组使用方式 
[lbservers] #定义lbservers组 
172.16.1.5 
172.16.1.6
[webservers] #定义webserver组 
172.16.1.7 
172.16.1.8

[servers:children]  #定义servers组包括两个子组 
[lbservers,webserver] 
lbservers
webserver

[root@manager project1]# ansible webservers --listhosts  -i hosts   
hosts (2):    
172.16.1.7    
172.16.1.8

[root@manager project1]# ansible webservers --listhosts  -i hosts   -f 1
hosts (2):    
172.16.1.7    
172.16.1.8

2 Ansible Ad-Hoc

5.ansible ad-Hoc? 单条命令


图片.png
command             #执行命令   默认      不支持管道 
shell               #执行命令             支持管道
yum_reposity        #yum仓库配置 
yum                 #yum安装软件 
get_url             #和linux的wget一致 
copy                #拷贝配置文件 s
ervice|systemd     #启动服务 
user                
group 
file                #创建目录 创建文件 递归授权 
mount               #挂载 
cron                #定时任务 
firewalld           #防火墙 
selinux             #selinuix

1.command

ansible webservers -a "ps axu|grep nginx" -i hosts  #不支持管道(简单命令)

2.shell

ansible webservers -m shell -a "ps axu|grep nginx" i hosts  #支持管道

3.yum

state:    
  present     安装    
  absent      卸载    
  latest      最新 
enablerepo      #指定使用按个仓库 
disablerepo     #排除使用哪个仓库
#1.安装最新的httpd服务 
[root@manager project1]# ansible webservers -m yum -a "name=httpd 
state=latest disablerepo=webtaticphp" -i hosts

#2.移除httpd服务 [root@manager project1]# ansible webservers -m yum -a 
"name=httpd state=absent disablerepo=webtaticphp" -i hosts

#3.安装httpd指定从按个仓库安装 - name: install the latest version of Apache 
from the testing repo
[root@manager project1]# ansible webservers -m yum -a "name=httpd 
state=latest enablerepo=testing" -i hosts

#4.通过URL方式进行安装
[root@manager project1]# ansible webservers -m yum -a 
"name=https://mirrors.aliyun.com/zabbix/zabbix/3.0/ rhel/7/x86_64/zabbix-
agent-3.0.0-1.el7.x86_64.rpm state=present disablerepo=webtatic-php" -i hosts


- name: install nginx rpm from a local file  (软件包 必须在被控端主机) 
[root@manager project1]# ansible webservers -m yum -a "name=/root
/zabbix-agent-4.0.0-2.el7.x86_64.rpm  state=present disablerepo=webtatic-php" -i hosts

4.copy

src     #本地路径,可以是相对,可以是绝对 
dest    #目标位置 
owner   #属主 
group   #属组 
mode    #权限 
backup  #备份
[root@manager project1]# ansible webservers -m copy -a "src=./file
/ansible.oldxu.com.conf dest=/etc/nginx/conf.d/ansible.oldxu.com.conf 
owner=root group=root mode=644" -i hosts 

[root@manager project1]# ansible webservers -m copy -a "src=./file
/ansible.oldxu.com.conf dest=/etc/nginx/conf.d/ansible.oldxu.com.conf 
owner=root group=root mode=644 backup=yes" -i hosts 

5.service|systemd

state    
  started         #启动    
  stopped         #停止    
  restarted       #重启    
  reloaded        #重载 
enabled             #是否开机自启    
  yes             #是    
  no              #否
[root@manager project1]# ansible webservers -m systemd -a "name=nginx 
state=restarted enabled=yes" -i hosts

6.file

#创建 /code/ansible
path   #路径 
state    
    touch           #创建文件    
    directory       #创建目录 
owner               #属主 
group               #属组 
mode                #权限
#准备站点 
[root@manager project1]# ansible webservers -m file -a "path=/code/ansible 
state=directory mode=755 owner=www group=www" -i hosts
#准备站点代码
[root@manager project1]# ansible webservers -m copy -a "src=./file  
/index.html dest=/code/ansible/index.html owner=www group=www mode=644" -i hosts

7.user group

#group   整数int   小数 flot  dasdsa str    真|假   bool 
[root@manager project1]# ansible webservers -m group -a  "name=www 
gid=666 state=present" -i hosts 
#user 
name            #名称 
uid             #
uid group           #组名或gid 
create_home     #是否创建家目录 
system          #是否作为系统组 
shell           #指定登录shell 
state    
    present    
    absent 
remove 
groups 
append 
password

# 程序使用    www    666 666 /sbin/nologin    /home  -->无 
[root@manager project1]# ansible webservers -m user -a "name=www 
uid=666 group=666 create_home=no shell=/sbin/nologin state=present" -i hosts

# 正常用户    oldxu  1000 1000 /bin/bash   /home/oldxu 
[root@manager   project1]# ansible webservers -m user -a "name=oldxu" -i hosts

# 移除oldxu用户,并删除家目录所有内容. 
[root@manager project1]# ansible webservers -m user -a "name=oldxu 
state=absent remove=yes" -i hosts

# 创建 other用户.有两个附加组root bin,创建家目录,指定登录 shell,设定密码123
#生成一个密码 ansible all -i localhost, -m debug -a "msg={{ '123' |   
password_hash('sha512', 'mysecretsalt') }}"

[root@manager project1]# ansible webservers -m user -a 'name=other 
groups='root,bin' create_home=yes shell=/bin/bash 
password="$6$mysecretsalt$gIIYs0Xgc7sSQkH.zKaz8/Afa 
MomYzR1QZYtccwmJcUt8VpLq4D055UCCX4MlwgePOP80ZRwhppv BF72RIAVi/"' -i hosts

8.mount

#提前准备好nfs服务端
[root@nfs ~]# vim /etc/exports
/data/zh 172.16.1.0/24(rw,sync,all_squash,anonuid=666,anongid=666)
/data/zrlog 172.16.1.0/24(rw,sync,all_squash,anonuid=666,anongid=666)
[root@web01 ~]# showmount -e 172.16.1.31 Export list for 172.16.1.31:   
/data/zrlog 172.16.1.0/24 
/data/zh    172.16.1.0/24 
/data/edu   172.16.1.0/24
/data/blog  172.16.1.0/24

#用管理端操作被控端,让被控端挂载nfs存储数据 
present     #写入/etc/fstab
absent      #卸载/etc/fstab
mounted     #临时挂载 
unmounted   #卸载当前挂载

#挂载过程中,如果目录不存在,则会创建该目录 
[root@manager project1]# ansible webservers -m mount -a 
"src=172.16.1.31:/data/zrlog path=/test_zrlog fstype=nfs opts=defaults 
state=mounted" -i hosts
[root@manager project1]# ansible webservers -m mount -a 
"src=172.16.1.31:/data/zrlog path=/test_zrlog fstype=nfs opts=defaults 
state=unmounted" -i hosts

9.cron

minute      #分 
hour        #时 
day         #日 
month       #月 
week        #周 
job         #
[root@manager project1]# ansible webservers -m cron -a 'name=test_job 
minute=00 hour=02 job="/bin/bash /server/scripts/client_to_data_server.sh 
&>/dev/null"' -i hosts

[root@manager project1]# ansible webservers -m cron -a 'name=test  
job="/bin/bash /server/scripts/test.sh &>/dev/null"' -i hosts

[root@manager project1]#  ansible webservers -m cron -a 'name=test  
job="/bin/bash /server/scripts/test.sh &>/dev/null" state=absent' -i hosts

10.firewalld

[root@manager project1]# ansible webservers -m systemd -a 
"name=firewalld state=started" -i hosts

#针对服务 [root@manager project1]# ansible webservers -m firewalld -a 
"service=http state=enabled" -i hosts

#针对端口 [root@manager project1]# ansible webservers -m firewalld -a 
"port=9999/tcp state=enabled" -i hosts

#针对source来源
[root@m01 promjk1]# ansible webservers -m firewalld -a 'source="10.0.0.0/24" zone=trusted state=enabled permanent=yes' -i hosts

#针对rule

11.selinux

[root@manager project1]# ansible webservers -m selinux -a 
"state=disabled" -i hosts

12.get_url

13.yum_repositry

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