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Common ansible commands

View ansible list of machines in the group to view memory usage (shell module) ansible-m command-a 'free-h' view host disk capacity (command module) ansible-m shell-a' df-h' error resolution record ansible all-m ping failed

When the above command is executed to detect the survival status of the host, the following error message appears:

"msg": "Failed to connect to the host via ssh: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password)"

Execute the following command to display more detailed information

Ansible-m ping all-vvv

The results are as follows

ESTABLISH SSH CONNECTION FOR USER: None

The ansible connection to the managed host (in this case, websrv.internal.org) does not use an explicit user name. Therefore, modify the configuration file / etc/ansible/hosts of ansible as follows:

Websrv.internal.org ansible_user=test

The 'test' here is a loggable user on the websrv.internal.org host. If the public key is configured, the above host probe command can be completed successfully. The echo is as follows:

Websrv.internal.org | SUCCESS = > {"changed": false, "ping": "pong"}

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