- Cool Tip: Got a hash but don’t know what type is it? Find out how to easily identify different hash types! Read more → Use the below commands from the Linux shell to generate hashed password for /etc/shadow with the random salt. Generate MD5 password hash. Python -c 'import random,string,crypt; randomsalt = '.join(random.sample(string.asciiletters,8)); print crypt.crypt.
- 2020-9-1 The password lookup will generate a new random password each time, but will not write it to /dev/null. This can be used when you need a password without storing it on the controller. Empty files cause the password to return as an empty string. As all lookups, this runs on the Ansible host as the user running the playbook, and “become.
- SUMMARY Add randommac string filter which can be used when creating KVM/libvirt VMs for instance: 00:00:00 randommac will return a string value like 00:00:00:23:85:bc ISSUE TYPE New Filter Pull Request COMPONENT NAME core filters ANSIBLE VERSION ansible 2.5.1 config file = None configured module search path = u'/Users/olivierbourdon.
安装完成ansible后要知道ansible主要安装的了什么,安装的目录结构是什么,每个目录做什么的
对于ansible的配置文件,其实没有过多的要了解的,因为ansible默认的配置文件就是挺适合日常使用的了,一般情况下不需要进行过多的修改
2020-9-4 Generate random passwords in Windows using OpenSSL. If you have installed OpenSSL on Windows, you can use the same openssl command on Windows to generate a pseudo-random password or string: c:UsersJanC:OpenSSL-Win64binopenssl.exe rand -hex 8 33247ca41c60ac53 PHP OpenSSL – create a pseudo-random password with PHP and OpenSSL.
ansible的配置文件在安装完成ansible后的 /etc/ansible/ansible.cfg 文件
默认配置文件如下:
ansible.cfg
上面的配置文件是ansible 2.7.5的版本的(版本不同可能具体的内容也会有小小的变化)
一般情况下的配置文件并不需要进行修改
下面对几个我自己常用的设置进行解释一下
如何获取Ansible的系列命令呢?
使用如下命令获取:
下面我们对系列命令做一下简单的了解:
ansible
ansible命令其实在运维工作中用的最多的命令,它的主要目的或者说是主要的应用场景是:在做临时性的操作的时候(比如只想看看被控端的一台主机或者多台主机是否存活),在man中的定义是:run a command somewhere else
ansible通过ssh实现配置管理、应用部署、任务执行等功能,建议配置ansible端能基于密钥认证的方式联系各个被管理节点
ansible通过ssh实现配置管理、应用部署、任务执行等功能,建议配置ansible端能基于密钥认证的方式联系各个被管理节点
ansible命令在运维工作中是尤为重要的在操作的时候结合ansible的模块(ansible-doc --list命令查看模块)可以实现很多功能
ansible命令选项和常用模块详细解释:https://www.cnblogs.com/brianzhu/p/10174130.html
ansible命令选项和常用模块详细解释:https://www.cnblogs.com/brianzhu/p/10174130.html
ansible-doc
ansible-doc是查看ansible模块(插件)文档说明,针对每个模块都有详细的用法说明,功能和Linux的man命令类似
ansible-doc命令在运维工作中也是尤为重要的我们在对模块进行了解学习的时候经常会用到
ansible-doc命令选项和常用模块详细解释:https://www.cnblogs.com/brianzhu/p/10174130.html
ansible-doc命令选项和常用模块详细解释:https://www.cnblogs.com/brianzhu/p/10174130.html
ansible-playbook
ansible-playbook是日常用的最多的命令,其工作机制是:通过读取预先编写好的playbook文件实现批量管理,要实现的功能与命令ansbile一样,可以理解为按一定的条件组成ansible的任务集
ansible-playbook命令后跟YML格式的playbook文件,执行事先编排好的任务集
ansible-playbook命令后跟YML格式的playbook文件,执行事先编排好的任务集
ansible-playbook命令在运维工作中是使用的最多的
ansible-playbook详细使用:https://www.cnblogs.com/brianzhu/p/10174123.html
ansible-playbook详细使用:https://www.cnblogs.com/brianzhu/p/10174123.html
ansible-galaxy
这个命令是一个下载互联网上roles集合的工具(这里提到的roles集合其实就是多个playbook文件的集合)
roles集合所在地址:https://galaxy.ansible.com
roles集合所在地址:https://galaxy.ansible.com
ansible-pull
该指令设计到了ansible的另一种的工作模式:pull模式(ansible默认使用的是push模式),这个和通常使用的push模式的工作机制正好相反(push拉取,pull推送)
ansible的pull模式适用于:
1) 你有数量巨大的机器需要配置,即使使用高并发线程依然需要花费大量的时间
2)你要在刚启动的,没有联网的主机上执行ansible
ansible的pull模式适用于:
1) 你有数量巨大的机器需要配置,即使使用高并发线程依然需要花费大量的时间
2)你要在刚启动的,没有联网的主机上执行ansible
ansible-console
ansible自己的终端
ansible-config
查看,编辑管理ansible的配置文件
ansible-connection
这是一个插件,指定执行模式(测试用)
ansible-inventory
查看被控制端主机清单的详细信息默认情况下它使用库存脚本,返回JSON格式 Smackdown pc game download.
ansible-vault
ansible-vault主要用于配置文件的加密,如编写的playbook配置文件中包含敏感的信息,不希望其他人随便的看,ansible-vault可加密/解密这个配置文件
更多常用模块请点击:https://www.cnblogs.com/brianzhu/p/10174130.html
posted @ 2018-12-25 15:21Brian_Zhu 阅读(5025) 评论(0) 编辑收藏
In Ansible, you can run any shell command on your Ansible hosts, the hosts you will be configuring with Ansible. These shell commands may have outputs. By default, the output is ignored. If you want to store the output in a variable and use it later, then you can use the Ansible register module. This article will show you how to use the Ansible register module to store the command output in a variable and access it later in your Ansible playbook.Prerequisites
If you want to try out the examples in this article, you must:
1) Have Ansible installed on your computer. Cummins qsk45 manual.
![Ansible generate random string c# Ansible generate random string c#](https://user-images.githubusercontent.com/30189426/47830220-f3993500-ddc5-11e8-932d-0b600d7a0191.png)
2) Have an Ubuntu host configured for Ansible automation.
There are many articles on LinuxHint dedicated to installing Ansible and configuring hosts for Ansible automation. You may check these articles out if necessary.
Setting Up a Project Directory
Before moving on any further, set up a new Ansible project directory, just to keep things a bit organized.
To create the project directory register-demo/ and all the required subdirectories (in your current working directory), run the following command:
Once the project directory is created, navigate to the project directory, as follows:
Create a hosts inventory file, as follows:
Add the host IP or DNS name of your Ubuntu host in the inventory file (one host per line), as shown in the screenshot below.
Here, I have added my Ubuntu 20.04 LTS host vm3.nodekite.com in the ubuntu20 group.
Once you are done, save the file by pressing <Ctrl> + X, followed by Y and <Enter>.
Create an Ansible configuration file ansible.cfg in your project directory, as follows:
Next, type the following lines in the ansible.cfg file:
[defaults]
inventory = hosts
host_key_checking = False
inventory = hosts
host_key_checking = False
Once you are done, save the ansible.cfg file by pressing <Ctrl> + X, followed by Y and <Enter>. A friend of qarinus.
Now, try to ping your Ubuntu host, as follows:
As you can see, my Ubuntu 20.04 host vm3.nodekite.com is accessible.
Example 1: The Basics
In this example, I will show you some of the basics of the Ansible register module. I will use Ansible to generate a random password in my Ubuntu 20.04 host using the pwgen command, store the password in a variable using the register module, and print the password on the screen.
First, create the new playbook generate_pass.yaml in the playbooks/ directory, as follows:
Type the following lines in the generate_pass.yaml file:
- hosts: ubuntu20
user: ansible
become: True
tasks:
- name: Ensure pwgen is installed
apt:
name: pwgen
state: present
update_cache: True
- name: Generate password
shell: pwgen -N 1 -s 30
register: mypass
- name: Print the generated password
debug:
msg: 'The password is {{ mypass }}'
user: ansible
become: True
tasks:
- name: Ensure pwgen is installed
apt:
name: pwgen
state: present
update_cache: True
- name: Generate password
shell: pwgen -N 1 -s 30
register: mypass
- name: Print the generated password
debug:
msg: 'The password is {{ mypass }}'
Once you are done, press <Ctrl> + X, followed by Y and <Enter>, to save the generate_pass.yaml file.
The following line tells Ansible to run the playbook generate_pass.yaml on every host in the ubuntu20 group. In my case, the playbook will be run on the host vm3.nodekite.com.
In this playbook, I will define three tasks.
The first task will enure that the pwgen package is installed.
The second task will generate a random, 30-character password using the pwgen command. I will use the register module to store the generated password in the mypass variable.
The third task will print the mypass variable using the Ansible debug module.
Run the playbook generate_pass.yaml using the following command:
As you can see, the playbook ran successfully. Red by john logan script pdf. A password has also been generated.
But, why did the variable mypass print so many items?
Ansible User Password
Disk utility for mac 10.4 11. Well, the variable mypass is an object that contains some important properties.
The most important properties of each of the register variables are as follows:
cmd – The command that ran to generate the output.
stdout – The output of the command.
stderr – The error output of the command.
start – The date and time when the command began executing.
end – The date and time when the command finished executing.
delta – The time taken to run the command. This is the difference between the end and the start properties.
stdout_lines – An array containing each output line of the command. Same as stdout, but stdout separates the lines using a newline (n) characters instead of arrays.
stderr_lines – An array containing each error output line of the command. Same as stderr, but stderr separates the lines using newlines (n) characters instead of arrays.
If you just want to print/access the password string (which is very likely), you may print/access the stdout property of the mypass variable in your playbook, as marked in the screenshot below.
Once you are done, run the playbook generate_pass.yaml again. Only the password string will be printed, as you can see in the screenshot below.
That covers the basics of the Ansible register module.
Ansible Generate Random String In Java
Example 2: Store Directory Contents
In this example, I will show you how to store the contents of a directory in a variable using the Ansible register module, as well as how to iterate over them.
First, create the new playbook get_dir_contents.yaml in the playbooks/ directory.
Next, type the following lines in the get_dir_contents.yaml playbook:
- hosts: ubuntu20
user: ansible
become: True
tasks:
- name: List all files and directories in /home/ansible
shell: ls /home/ansible
register: dir_contents
- name: Print directory contents using loops
debug:
msg: '{{ item }}'
loop: '{{ dir_contents.stdout_lines }}'
user: ansible
become: True
tasks:
- name: List all files and directories in /home/ansible
shell: ls /home/ansible
register: dir_contents
- name: Print directory contents using loops
debug:
msg: '{{ item }}'
loop: '{{ dir_contents.stdout_lines }}'
Once you are done, press <Ctrl> + X, followed by Y and <Enter>, to save the generate_pass.yaml file.
In this playbook, I will define two tasks.
The first task lists all the contents of the /home/ansible directory and stores them in the dir_contents variable.
The second task prints the dir_contents variable.
Run the get_dir_contents.yaml playbook, as follows.
$ ansible-playbook playbooks/get_dir_contents.yaml
As you can see, the stdout_lines property stored the directory contents as an array. The stdout property is also stored in the directory contents. These properties are separated by newline (n) characters. In this example, the stdout_lines property is easy to work with.
Next, iterate over the directory contents using a loop.
To do this, open the get_dir_contents.yaml playbook and change the second task, as marked in the screenshot below.
Here, I am iterating over the dir_contents.stdout_lines array using a loop and printing the array items using the Ansible debug module. In this task, the item variable is a loop variable used to iterate over the array elements.
Run the get_dir_contents.yaml playbook, as follows:
$ ansible-playbook playbooks/get_dir_contents.yaml
As you can see, the contents of the /home/ansible directory are printed on the screen.
Example 3: Back Up Directory
In this example, I will show you how to back up a directory using the Ansible register, file, and copy modules.
First, create the new playbook backup_home_dir.yaml in the playbooks/ directory, as follows:
Next, type the following lines in the backup_home_dir.yaml file.
- hosts: ubuntu20
user: ansible
become: True
tasks:
- name: Get home directory /home/ansible contents
shell: ls /home/ansible
register: dir_contents
- name: Create a new directory /tmp/ansible
file:
path: /tmp/ansible
state: directory
- name: Backup home directory /home/ansible to /tmp/ansible
copy:
src: /home/ansible/{{ item }}
dest: /tmp/ansible/
remote_src: True
loop: '{{ dir_contents.stdout_lines }}
user: ansible
become: True
tasks:
- name: Get home directory /home/ansible contents
shell: ls /home/ansible
register: dir_contents
- name: Create a new directory /tmp/ansible
file:
path: /tmp/ansible
state: directory
- name: Backup home directory /home/ansible to /tmp/ansible
copy:
src: /home/ansible/{{ item }}
dest: /tmp/ansible/
remote_src: True
loop: '{{ dir_contents.stdout_lines }}
Once you are done, press <Ctrl> + X, followed by Y and <Enter>, to save the backup_home_dir.yaml file.
In this playbook, I will define three tasks.
The first task stores the contents of the /home/ansible directory (the directory I will be backing up) in the dir_contents variable using the Ansible register module.
The second task creates a new directory /tmp/ansible using the Ansible file module. This is the directory where the backup will be stored.
The third task loops through the dir_contents.stdout_lines array and uses the Ansible copy module to copy each directory to the /tmp/ansible/ directory.
Run the backup_home_dir.yaml playbook, as follows:
As you can see, on my Ubuntu 20.04 LTS host, the backup was successful.
Example 4: Run or Skip Tasks
In this example, I will show you how to run or skip tasks, depending on the variable you have registered, using the register module.
First, create the new playbook register_conditions.yaml in the playbooks/ directory as follows:
Next, type the following lines in the register_conditions.yaml file.
- hosts: ubuntu20
user: ansible
become: True
tasks:
- name: List directory contents
shell: ls /home/ansible/test3
register: dir_contents
- name: Check if directory is empty
debug:
msg: 'Directory is empty.'
when: dir_contents.stdout '
user: ansible
become: True
tasks:
- name: List directory contents
shell: ls /home/ansible/test3
register: dir_contents
- name: Check if directory is empty
debug:
msg: 'Directory is empty.'
when: dir_contents.stdout '
Once you are done, press <Ctrl> + X, followed by Y and <Enter>, to save the register_conditions.yaml file.
In this playbook, I have defined two tasks.
The first task stores the contents of the /home/ansible/test3 directory in the dir_contents variable.
The second task checks if dir_contents.stdout is an empty string, or whether the directory /home/ansible/test3 is empty. If the directory is empty, the message Directory is empty will print.
Run the register_conditions.yaml playbook, as follows:
$ ansible-playbook playbooks/register_conditions.yaml
As you can see, the playbook ran successfully.
Since the directory /home/ansible/test3 is empty, the playbook printed the message Directory is empty.
Next, create a new file in the /home/ansible/test3 directory.
Since the /home/ansible/test3 directory is no longer empty, the task Check if directory is empty is skipped, as you can see in the screenshot below.
$ ansible-playbook playbooks/register_conditions.yaml
Conclusion
The Ansible register module is very useful for server automation. This article showed you the basics of the register module, including examples of using the Ansible register module for directory storage and backup, and for running directory tasks.