Linux-Ansible管理变量和事实 ansible定义变量的方式

[root;workstation ~]# lab troubleshoot-review  start 

Starting troubleshoot-review exercise.

 · Verifying Ansible installation..............................  SUCCESS
 · Creating working directory..................................  SUCCESS
 · Deploying ansible.cfg.......................................  SUCCESS
 · Deploying Ansible inventory.................................  SUCCESS
 · Downloading additional lab files
   · secure-web.yml............................................  SUCCESS
   · vhosts.conf...............................................  SUCCESS
   · html/index.html...........................................  SUCCESS
 · Removing web server packages on serverb.....................  SUCCESS
 · Configuring HTTP/HTTPS access to serverb....................  SUCCESS

第一步;
[student;workstation troubleshoot-review]$ ansible-playbook  secure-web.yml 
ERROR! We were unable to read either as JSON nor YAML, these are the errors we got from each:
JSON: Expecting value: line 1 column 1 (char 0)

Syntax Error while loading YAML.
  mapping values are not allowed in this context

The error appears to be in ;/home/student/troubleshoot-review/secure-web.yml;: line 7, column 30, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

  vars:
    random_var: This is colon: test
                             ^ here
解决方法
7     #random_var: This is colon: test
8     random_var: ;This is colon: test;


第二步;
报错原因
[student;workstation troubleshoot-review]$ ansible-playbook  secure-web.yml 
ERROR! We were unable to read either as JSON nor YAML, these are the errors we got from each:
JSON: Expecting value: line 1 column 1 (char 0)

Syntax Error while loading YAML.
  did not find expected ;-; indicator

The error appears to be in ;/home/student/troubleshoot-review/secure-web.yml;: line 39, column 10, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:


         - name: start and enable web services
         ^ here

解决方法
缩进

第二步;
报错原因
[student;workstation troubleshoot-review]$ ansible-playbook  secure-web.yml
ERROR! We were unable to read either as JSON nor YAML, these are the errors we got from each:
JSON: Expecting value: line 1 column 1 (char 0)

Syntax Error while loading YAML.
  found unacceptable key (unhashable type: ;AnsibleMapping;)

The error appears to be in ;/home/student/troubleshoot-review/secure-web.yml;: line 14, column 20, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

          yum:
            name: {{ item }}
                   ^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:

    with_items:
      - {{ foo }}

Should be written as:

    with_items:
      - ;{{ foo }};
解决方法
 14             name: ;{{ item }};
 15             #name: {{ item }}


第四步;
报错原因
解决方法
[root;serverc ~]# su - students
su: user students does not exist
[root;serverc ~]# vim /etc/passwd
[root;serverc ~]# grep studen /etc/passwd
student:x:1000:1000:Student User:/home/student:/bin/bash

  5   #remote_user: students
  6   remote_user: student

第五步;
报错原因
解决方法
[student;workstation troubleshoot-review]$ ssh student;serverb
Warning: Permanently added ;serverb,172.25.250.11; (ECDSA) to the list of known hosts.
Activate the web console with: systemctl enable --now cockpit.socket

This system is not registered to Red Hat Insights. See https://cloud.redhat.com/
To register this system, run: insights-client --register

[student;serverb ~]$ ssh student;serverc
The authenticity of host ;serverc (172.25.250.12); can;t be established.
ECDSA key fingerprint is SHA256:NJAyJMx8B2AeIYHRnVLAuJ1XZwblomyOKowyfTwGrTY.
Are you sure you want to continue connecting (yes/no/[fingerprint])? 

TASK [install web server packages] *******************************************************************************************
failed: [serverb.lab.example.com] (item=httpd) => {;ansible_loop_var;: ;item;, ;changed;: false, ;item;: ;httpd;, ;msg;: ;This command has to be run under the root user.;, ;results;: []}
failed: [serverb.lab.example.com] (item=mod_ssl) => {;ansible_loop_var;: ;item;, ;changed;: false, ;item;: ;mod_ssl;, ;msg;: ;This command has to be run under the root user.;, ;results;: []}

TASK [recover original httpd config] *****************************************************************************************
ok: [serverb.lab.example.com]

TASK [email notification of httpd config status] *****************************************************************************
fatal: [serverb.lab.example.com]: FAILED! => {;msg;: ;The conditional check ;httpd_conf_syntax.stdout != ;Syntax OK;; failed. The error was: error while evaluating conditional (httpd_conf_syntax.stdout != ;Syntax OK;): ;httpd_conf_syntax; is undefined

The error appears to be in ;/home/student/troubleshoot-review/secure-web.yml;: line 75, column 11, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:


        - name: email notification of httpd config status
          ^ here
;}

PLAY RECAP *******************************************************************************************************************
serverb.lab.example.com    : ok=2    changed=0    unreachable=0    failed=1    skipped=0    rescued=1    ignored=0 

解决方法;
[student;workstation troubleshoot-review]$ vim inventory
  1 [webservers]
  2 serverb.lab.example.com ansible_host=serverc.lab.example.com ansible_become_user=root ansible_become_password=student ansi    ble_become=yes