Ansible Role Description:
Directory name
Description
Defaults
Default Variable Storage directory
Handlers
Handlers (actions to be taken when a change occurs)
Meta
Role dependency Processing
Tasks
Task action definition for specific execution
Templates
Template file storage Directory
VARs
Variable file dir
Common ad-hoc commands are used to solve some common simple configuration commands, and these commands are executed quickly. Adhoc can be easy to use without having to write playbooks.
Man ansibleansible File transferansible can transmit files to a remote host through SCP # ansible webservers-M copy-a "src =/etc/hosts DEST =/tmp/hosts" to/etc/ copy the hosts file to/tmp/hosts of all hosts in the webservers remote host group. The file module can change
Ansible @ an efficient configuration management tool-Ansibleconfiguremanagement-translation (12)If you do not have written authorization, do not repeat Chapter 5 custom modules.
External inventoriesIn the first chapter we saw how Ansible needs an inventory file, so that it knowswhere its hosts are and how to access them. Ansible also allows you to specify ascript
I. Ansible Introduction
Ansbile is a powerful python-based batchcompute Command Execution tool. It has powerful functions in managing a large number of clusters. It is small in size and has little dependencies, and has a general trend.
II. Install
The ansible Binary Package is provided in RHEL6. When using CentOS6, you may need to add an epel source.
# yum install an
Background information:There are a lot of facts in ansible, but not enough in many cases.For example, Ansible has no ansible_private_ipv4_address such a facts, which is used to save a private network IP address.And we just need such a facts, because we have a lot of server's default network card is not eth0, some bond0,eth1,em0,em1, and the public network IP address and private network IP address also does
Meet a demand today when using Ansible-playbook after executing a script, according to the content returned by the script to determine whether to continue execution or break execution, query official website found using Register Register can be used to achieve the recording script output, using when+ Fail module to determine whether to proceed or break down, here is a simple example: Ansible service on 172.
Ansible's first lesson: Install itHow to obtain Ansible:
You can see the implementation method of ansible code from the ansible-github address here, and give it an issue.Ansible installation is simple:
Other Ubuntu CentOS series MacOS
Ansible depends on Linux only, and ansible
Although nginx can also be installed through yum, how can I use the source code package to install and enable some nginx functional modules, and send them to the managed cluster through ansible? The following provides a specific example for the bit viewer for reference.
First, we need to manually compile an nginx server as a template, and then use roles role management to decouple it and deliver it to the managed cluster. The specific steps are as fol
Ansible-Tower Quick Start-1. Overview [translation], ansibletower
Overview
Tower
Ansible-Tower is a web interface of Ansible and uses rest api as the endpoint for access. By using open-source orchestration engine, whether it is to share operation tasks with your team, or to integrate with your Ansible through REST API
With Ansible also has more than two years, before doing the initialization work is in the Kickstart configuration file with their shell script initialization system environment, now the operation and maintenance environment is different, the pre-system installation work to the IDC department to deal with, What I can do here is to initialize my favorite operations environment with a script. No ansible before
As the signing of the new club, the environment is very good, colleagues are very easy-going, the leadership is also very good to talk, overtime benefits are great, all in all, good work, a lot of money.Batch processing tool My earliest contact is pssh, because it is very simple and rough, but it is too simple and rough, to cope with 10 sets of 20 machines is OK, to cope with 50 100 servers on the heart of the lack of power, and I do not like puppet, always feel that the thing with my eight, so,
Ansible automatic operation and maintenance (ii)(2) Configuring and using Ansible#复制配置文件mkdir/etc/ansible/CP examples/ansible.cfg/etc/ansible/CP examples/hosts/etc/ansible/#修改/etc/ansible/hosts, you can use IP or domain name inste
Installing the operating systemInstall the Ubuntu Server 14.04 (trusty Tahr) LTS 64-bit operating systemAt least one network interface can access the extranetLocale to en_US. UTF-8Configuring the operating systemDeployment host to taget host no password login:Copy Deployment hos Public key to Taget/root/.ssh/authorized_keysssh-copy-id-i ~/.ssh/id_rsa.pub [email protected]kernel版本为3.13.0-34-genericor later$ uname-alinux rpc-3 3.13.0-46-generic #79-ubun
Centos7 compilation and installation of ansible
Shell: The local variable definition word, the global variable definition word export ---- small Q
Bytes -----------------------------------------------------------------------------------------------------
Requirement: most of us are using centos6. When installing ansible, yum installs the extension source and ansible
This paper mainly introduces several command modules of ansible, including:
command-Execute commands on the remote node
shell-Let the remote host execute the command under the shell process
script-Executes the local script after it is delivered to the remote host
raw-Perform low-level and dirty SSH commands
expect-Execute commands and respond to prompts
telnet-Perform low-level and dirty Telnet commands
Command Module
From:http://www.ansible.cn/forum.php?mod=viewthreadtid=67extra=page%3d1today, I looked at the ansible, and if I took the time to use the shell, I could write one. Ansible need to use Sshpass, password is also saved in plaintext,not very safe. CenOS6.4, directly yum-y install ansible can be installed. FAQ 1, appears error:ansible requires a JSON module, none found
Ansible is the core part of the instruction, which is mainly used to execute the AD-HOC (Point-to-point) command, which is a single command. The default is to follow the host and Options section, which is the command module when the module is not specified by default.
2. The module that is used by default can be modified in ansible.cfg. /etc/ansible/ansible.cfgAnsible Common Command parsing:See which m
This article mainly introduces the distribution system for Python to use ansible to distribute and process tasks. For more information, see the distribution system for users familiar with python who can use paramiko to write tasks, combined with the gevent coroutine, asynchronous processing can be implemented.
If you only want to use tools, you can use some tools, such as {puppet, saltstack, fabric, ansible
Ansible installation nginx for rolling back the publishing functionFirst, the preparatory work1. Prepare two machinessai:192.168.131.132--"Ansible's service sideluojy:192.168.131.133--"Ansible's client2, 132 machine installed Ansible(1) Yum install-y epel-release (2) Yum install-y ansible 3, 132,133 turn off firewall 4 on the machine, set hostname,/etc/sysconfig/
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