Trying to edit grub.conf and add a phrase to the kernel lines. 

*Sample stanza:*

title CentOS (2.6.32-696.13.2.el6.x86_64) 
    root (hd0,0) 
    kernel /vmlinuz-2.6.32-696.13.2.el6.x86_64 ro 
root=/dev/mapper/vg_root-lv_root rd_NO_LUKS rd_LVM_LV=vg_root/lv_root 
LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 console=ttyS0,115200n8 
rd_LVM_LV=vg_root/lv_swap KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb 
quiet rd_NO_DM 
    initrd /initramfs-2.6.32-696.13.2.el6.x86_64.img


Ansible playbook stanza that's not working:

- name: edit_grub_conf 
   lineinfile: 
     path: "/tmp/grub.conf" 
     regexp: "^kernel(.*)?" 
     line: 'kernel\1 transparent_hugepage=never' 
     state: present 
     backrefs: true 
     mode: 0666 

Error reported:

TASK [edit_grub_conf] 
********************************************************** 
fatal: [leviticus]: FAILED! => {"changed": false, "failed": true, 
"module_stderr": "Shared connection to leviticus closed.\r\n", 
"module_stdout": "Traceback (most recent call last):\r\n File 
\"/tmp/ansible_PUtMtv/ansible_module_lineinfile.py\", line 470, in 
<module>\r\n main()\r\n File 
\"/tmp/ansible_PUtMtv/ansible_module_lineinfile.py\", line 462, in main\r\n 
ins_aft, ins_bef, create, backup, backrefs)\r\n File 
\"/tmp/ansible_PUtMtv/ansible_module_lineinfile.py\", line 261, in 
present\r\n bre_m = re.compile(to_bytes(regexp, 
errors='surrogate_or_strict'))\r\n File \"/usr/lib64/python2.6/re.py\", 
line 190, in compile\r\n return _compile(pattern, flags)\r\n File 
\"/usr/lib64/python2.6/re.py\", line 245, in _compile\r\n raise error, v # 
invalid expression\r\nsre_constants.error: nothing to repeat\r\n", "msg": 
"MODULE FAILURE", "rc": 0}


What am I missing?

Thanks!

Leam

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