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Ansible command format

# View ansible help

Ansible-h

# Command format

Usage: ansible [options]

-a MODULE_ARGS # module parameters

-C,-- check # run for nothing

-f FORKS,-- forks=FORKS # specifies concurrency. Default is 5.

-- list-hosts # list hosts

-m MODULE_NAME # module name

-- syntax-check # check syntax

-k # password

2.ansible link machine

Rpm-ql ansible | more # View the files generated by ansible

/ etc/ansible

/ etc/ansible/ansible.cfg # configuration file

/ etc/ansible/hosts # configure the control computer

/ etc/ansible/roles # empty folder

# add host addresses one by one in the hosts file

The underlying ansible host address-m ping-k # ansible is implemented through ssh

# generate key

Ssh-keygen

# copy the public key to the target host

Ssh-copy-id root@ host addr

# you can link to the target host through ssh

Ssh 'root@ host address'

Exit exit

# do not add-k to check whether the machine is online after completing the above operation

Ansible host address-m ping

"" the way to test whether the machine is online and the grouping management ""

Ansible 192.168.226.101-m ping # ping of a separate machine

Ansible 192.168.226.101192.168.226.102-m ping # ping of multiple machines

Ansible all-m ping # all machines

# grouping: for example, there are more than N machines, some are responsible for databases, some are uwsgi, some are redis, etc.

Ansible web-m ping # single group

Ansible web,db-m ping # Union of multiple groups

Ansible 'web:&db'-m ping # the intersection of multiple groups must be in single quotation marks, not double quotation marks

Ansible'webbloggdb'- m ping # the difference of multiple groups, before but not after

Introduction of 3.ansible module

Ansible-doc-l | wc-l # View the total number of modules in ansible

4.ansible-doc command format

-j # returns data as json

-l,-- list # lists all modules

-s,-- snippet # displays module information in segments

# Common commands

Ansible-doc-s module name # View module help information

Module introduction

Command

Group machines execute system commands in batches

Ansible-doc-s command

Ansible web-m command-a "pwd"

Ansible web-m command-a "ls"

Ansible web-m command-a "chdir=/tmp pwd" # change directories and execute commands

Ansible web-m command-a "creates=/tmp pwd" # because the tmp directory exists, pwd will not execute

Ansible web-m command-a "creates=/tmp2 pwd" # because tmp2 does not exist, pwd executes

Ansible web-m command-a "removes=/tmp2 pwd" # because tmp2 does not exist pwd does not execute

Ansible web-m command-a "removes=/tmp pwd" # because the tmp directory exists, pwd executes

# create a user

Ansible web-m command-a'useradd jason'

# set password (local setting) and need to confirm it twice

Passwd jason

# setting password (local setting) does not need to be confirmed twice

Echo "123" | passwd-- stdin jason # set the user's password

Shell

When the command contains $home and common symbols (, |,. &), you need to use shell to take effect.

Ansible-doc-s shell

Ansible web-m shell-a "echo '123' | passwd-- stdin jason"

Ansible web-m shell-a "chdir=/tmp pwd" shabang

Ansible 192.168.226.101-m shell-a "bash a.sh" # execute shell script

Ansible 192.168.226.101-m shell-a "/ root/a.sh" # executes the shell script, and the file must have the permission to execute

Ansible 192.168.226.101-m shell-a "/ root/a.py" # execute the Python file

Script

Execute local scripts on a remote machine

Ansible-doc-s script

Ansible db-m script-a "/ root/a.sh" # executes local files and controls computer files

Ansible db-m script-a "creates=/root/a.sh / root/a.sh" # determines whether the file on the controlled machine exists, if not, executes it, and skips if it exists

Ansible db-m script-a "creates=/tmp / root/a.sh" # judge the files on the controlled computer

Copy

Copy local files to a remote machine

Ansible-doc-s copy

Backup # create a backup file that ends with a timestamp

Content # writes directly to the file

Dest # destination address

Group # generic group

Permissions for mode # files W 2 R 4 X 1

Owner # owner

Src # Source address

Ansible web-m copy-a "src=/etc/fstab dest=/tmp/f" # copy the local file to the remote host and change the file name, which will not change if executed many times, because the checksum value is the same

Ansible web-m copy-a "src=a.sh dest=/tmp/a.sh backup=yes" # copy local files and back up

Ansible web-m copy-a "src=a.sh dest=/tmp/a.sh backup=yes group=alex mode=755" # copy the local file to the remote host and specify the group and permissions

Ansible web-m copy-a "src=/etc/init.d dest=/tmp backup=yes group=alex mode=755" # copy the local directory to the remote host, modify the directory permissions, and the files in the directory will also be changed

Ansible web-m copy-a "src=/etc/init.d/ dest=/tmp backup=yes group=alex mode=755" # copy all files in the local directory

Ansible web-m copy-a "content=' big string is like a storm, the small string is gentle and gentle, and the small string is cut like a whisper, and the sound is played crisscross with each other, just like a string of big beads and small beads falling off the jade plate 'dest=/tmp/b" # write directly into the document, overwrite and use with caution

File

Files belong to groups, permissions, hard and soft chains, etc.

Group # generic group

Mode # permissions

Owner # owner

Path # path

Src # soft and hard links

State = link

State = hard

State

Directory # directory

File

Touch # empty file

Absent # Delete

Link # soft connection

Hard # hard links

Ansible web-m file-a "path=/jason5 state=directory owner=jason" # create a directory and make an owner

Ansible web-m file-a "path=/tmp/jason.txt state=touch mode=777" # create a file and specify permissions

Ansible web-m file-a "path=/tmp/cron src=/var/log/cron state=link" # create a soft link to your own file

Ansible web-m file-a "path=/tmp/cron state=absent" # Delete soft connection

Ansible web-m file-a "path=/jason5 state=absent" # Delete folder

Soft connection Shortcut (windows) ln-s source file modification soft connection modification source file deletion soft connection failure can cross partition

Location of hard link hard disk ln source file modification hard link modification source file deletion hard link unchanged cannot cross partition

Copy and open up a new space cp source file modify cp invariant source file deletion can be cross-partition

Fetch

Pull remote host files

Dest destination address

Src source address

Ansible web-m fetch-a "src=/var/log/cron dest=/tmp" # pulls the files of the remote host and takes the host ip address or host name as the directory, and retains the original directory structure

Yum module

Ansible-doc-s yum

Disablerepo # disable a source

Enablerepo # enable a source

Name # package name

State

Install

Remove

Yum install-y python2-pip # in the epel feed

# copy the downloaded pip from the host to other controlled computers

Ansible all-m copy-a 'src=/etc/yum.repos.d/epel.repo dest=/etc/yum.repos.d/epel.repo'

Ansible web-m yum-a "name=python2-pip" # install a single package

# check whether to install the corresponding machine and execute the following command

Rpm-Q package name

# eg:rpm-Q pip/python-pip/python2-pip/redis

Ansible web-m yum-a "name=python2-pip,redis" # installs multiple software packages

Ansible web-m yum-a "name='@Development Tools'" # installation package group

Ansible web-m yum-a "name=nginx state=absent" # Uninstall

Pip module

Tools for installing third-party modules in python

Pip freeze > requirements.txt # exports the local environment to a file where no version information is written and the latest version is installed by default

Pip install-r requirements.txt # installs all packages (*)

Pip list # View all packages

Pip uninstall flask # Uninstall

# download package

Python setup.py build

Python setup.py install

Pip module

Ansible-doc-s pip

Chdir # switch directories

Name # package name

Requirements # exported files

Virtualenv # virtual environment

# install django (for a long time ~)

Ansible web-m pip-a "name=django==1.11"

Service module

Ansible-doc-s service

# key parameters

Enabled # Boot start

Name # Service name

State

Started

Stopped

Restarted

Reloaded

Ansible web-m service-a "name=redis state=started" # start

Ansible web-m service-a "name=redis state=stopped" # off

Ansible web-m service-a "name=redis enabled=yes" # set boot self-startup

Cron scheduling task module

# format

* job

Task of time-sharing, day, month and week

Ansible-doc-s cron

Day # days

Disabled # disable crontab, plus #

Hour # hours

Job # Task

Minute # minutes

Month March

Name # name, description information

User # user

Weekday # weeks

# the name must be different when you add it, without the name None (crontab-l view scheduled tasks)

Ansible web-m cron-a "minute=12 name=touchfile job='touch / tmp/xiaoqiang.txt'" # creation

Ansible web-m cron-a "name=touchfile state=absent" # Delete

Ansible web-m cron-a "minute=12 name=touchfile2 job='touch / tmp/jason.txt' disabled=yes" # Notes

Ansible web-m cron-a "name=None state=absent" # Delete scheduled tasks with empty names

User module

Ansible-doc-s user

Group # generic group

Groups # additional groups

Home # set up the home directory

Name # user name

Remove # Delete the user and delete the user's home directory

Shell # shell after the user logs in

System # system user

Uid # id of the user

Ansible web-m user-a "name=alex10 shell=/sbin/nologin home=/opt/alex10 uid=3000 groups=root" # create the user and specify the user's shell, home directory, uid, and additional group

Ansible web-m user-a "name=alex11 shell=/sbin/nologin home=/opt/alex11"

Ansible web-m user-a "name=alex12 system=yes" # create a system user

Ansible web-m user-a "name=alex12 state=absent" # Delete users and do not delete home directories

Ansible web-m user-a "name=alex11 state=absent remove=yes" # Delete the user and delete the user's home directory

Group module

Ansible-doc-s group

Gid # group id

System # system Group

Name # name

Ansible web-m group-a "name=jason10 system=yes gid=5000" # create a system group

Ansible web-m group-a "name=jason11" # create a normal group

Ansible web-m group-a "name=jason11 state=absent" # delete group

Setup module

Collect some basic information about the remote host

# View details

Ansible hostname-m setup | more

Ansible_all_ipv4_addresses # all ipv4 addresses

Ansible_all_ipv6_addresses # all ipv6 addresses

Architecture of ansible_architecture # system

Ansible_date_time # system time

Ansible_default_ipv4 # default ipv4 address

Address # ip address

Alias # Nic name

Broadcast # broadcast address

Gateway # Gateway

Netmask # Subnet Mask

Network # network segment

Ansible_default_ipv6 # default ipv6 address

Disk information for ansible_device_links # system

Ansible_distribution # system name

Company-based ansible_distribution_file_variety # system

Major version of the ansible_distribution_major_version # system

Full version of the ansible_distribution_version # system

Dns default udp port 53 for ansible_dns # system

Domain ldap of the ansible_domain # system

Ipv4 # ipv4 address

Environment of ansible_env # system

Full hostname of the ansible_fqdn # system

Abbreviated hostname of the ansible_hostname # system

Kernel version of the ansible_kernel # system

Architecture of ansible_machine # system

Memory of the ansible_memtotal_mb # system

Memory usage of ansible_memory_mb # system

Mounting information for ansible_mounts # system

Ansible_os_family # system Family

Package management tools for ansible_pkg_mgr # system

Cpu of the ansible_processor # system

Ansible_processor_cores # number of cores per cpu

Number of ansible_processor_count # cpu

Number of ansible_processor_vcpus # cpu = number of cpu * number of cores per cpu

Ansible_python # system python Information

Ansible_python_version # version of the system python

Ansible_system # system name

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