我正在尝试通过TiDB ansible安装TiDB。我指的是https://pingcap.com/docs/v1.0/op-guide/ansible-deployment/中的文档，在此过程中，我遇到命令ansible-playbook bootstrap.yml错误。虽然磁盘未满，但出现磁盘已满错误。请让我知道解决该错误的步骤。谢谢！
[root@fm42cephnode005 tidb-ansible-master]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 94G 0 94G 0% /dev
tmpfs 94G 0 94G 0% /dev/shm
tmpfs 94G 12M 94G 1% /run
tmpfs 94G 0 94G 0% /sys/fs/cgroup
/dev/sdg5 239G 5.2G 222G 3% /
/dev/sdg3 123G 1.8G 115G 2% /home
/dev/sdg2 1014M 257M 758M 26% /boot
/dev/sdg1 200M 12M 189M 6% /boot/efi
tmpfs 19G 20K 19G 1% /run/user/42
tmpfs 19G 0 19G 0% /run/user/0
/dev/nvme3n1 1.5T 77M 1.4T 1% /home/tidbdeployment
[root@fm42cephnode005 tidb-ansible-master]# ansible-playbook bootstrap.yml
PLAY [initializing deployment target] **********************************************************************************************************************************************************************
TASK [check_config_static : Ensure TiDB host exists] *******************************************************************************************************************************************************
TASK [check_config_static : Ensure PD host exists] *********************************************************************************************************************************************************
TASK [check_config_static : Ensure TiKV host exists] *******************************************************************************************************************************************************
TASK [check_config_static : Check ansible_user variable] ***************************************************************************************************************************************************
TASK [check_config_static : Ensure timezone variable is set] ***********************************************************************************************************************************************
TASK [check_config_static : Close old SSH control master processes] ****************************************************************************************************************************************
ok: [localhost]
TASK [check_config_static : Check ansible version] *********************************************************************************************************************************************************
TASK [check_config_static : Check if jmespath installed] ***************************************************************************************************************************************************
changed: [localhost]
TASK [check_config_static : Check if jinja2 installed] *****************************************************************************************************************************************************
changed: [localhost]
TASK [check_config_static : Preflight check - Fail when jmespath or jinja2 isn't installed] ****************************************************************************************************************
TASK [check_config_static : Get jmespath info] *************************************************************************************************************************************************************
changed: [localhost]
TASK [check_config_static : Get jmespath version] **********************************************************************************************************************************************************
ok: [localhost]
TASK [check_config_static : Get jinja2 info] ***************************************************************************************************************************************************************
changed: [localhost]
TASK [check_config_static : Get jinja2 version] ************************************************************************************************************************************************************
ok: [localhost]
TASK [check_config_static : Preflight check - Fail when the versions of jmespath and jinja2 doesn't meet the requirements] *********************************************************************************
TASK [check_config_static : Check inventory configuration] *************************************************************************************************************************************************
changed: [localhost]
TASK [check_config_static : Preflight check - If the inventory configuration is correct] *******************************************************************************************************************
PLAY [check node config] ***********************************************************************************************************************************************************************************
TASK [pre-ansible : disk space check - fail when disk is full] *********************************************************************************************************************************************
fatal: [localhost]: FAILED! =>
msg: |-
The conditional check ' '100%' in disk_space_st.stdout ' failed. The error was: error while evaluating conditional ( '100%' in disk_space_st.stdout ): Unable to look up a name or access an attribute in template string ({% if '100%' in disk_space_st.stdout %} True {% else %} False {% endif %}).
Make sure your variable name does not contain invalid characters like '-': argument of type 'StrictUndefined' is not iterable
to retry, use: --limit @/home/tidb-ansible-master/retry_files/bootstrap.retry
PLAY RECAP *************************************************************************************************************************************************************************************************
localhost : ok=8 changed=5 unreachable=0 failed=1
ERROR MESSAGE SUMMARY **************************************************************************************************************************************************************************************
[localhost]: Ansible Failed! ==>
msg: |-
The conditional check ' '100%' in disk_space_st.stdout ' failed. The error was: error while evaluating conditional ( '100%' in disk_space_st.stdout ): Unable to look up a name or access an attribute in template string ({% if '100%' in disk_space_st.stdout %} True {% else %} False {% endif %}).
Make sure your variable name does not contain invalid characters like '-': argument of type 'StrictUndefined' is not iterable
这是使用df -h. | tail -n1命令来确定与ansible_user中所有计算机的inventory.ini相对应的主目录分区的空间使用情况。发生错误时，分区使用率可能为100％。如果确认剩余空间，请重试。