ansible playbook方式使用yml文件方式配置ansible通信port以及user

admin

Basically username has the hostname as a variable.

: o; E! R# G) O5 w( N6 t* ?% p6 y. sNow our inventory has just IPs with group web.
9 N" i+ b. x8 Y( r
- }' C. ~( y/ @" D> cat inventory.txt
[host]
* ~& r' m1 S. x8 f& ^) \172.16.2.8
: C2 i4 p  V1 P  f# U6 S172.16.x.y
9 _( t+ H3 \' _  J) p: J/ p) c( D172.16.y.z
My playbook yml has ansible user as following.

+ S/ w+ j& g) l: E0 q8 p; B) u> cat uptime.yml
- hosts: host
2 s/ k( c8 P6 o6 m3 q% q2 X8 y( z  vars:
    ansible_ssh_port: xxxx
    ansible_user: bob~1234~{{inventory_hostname}}
  tasks:
. u2 e( i2 x1 r+ C2 W  - name: Run uptime command
    shell: uptime
However, when I use following ansible-playbook command, it gives error for incorrect username.

( _) E7 F+ A5 h. k$ Y# s$ w> ansible-playbook -v uptime.yml -i inventory.txt --private-key=key.pem
Please help me find correct ansible_user in playbook which has hostname as a variable inside.