Unrecognised escape sequence '\]' modules/packstack/manifests/nagios/nrpe.pp at line 31

[Nick Rose]

Warning: Unrecognised escape sequence '\]' in file /var/tmp/packstack/63d74c45d5f24113beaf9761a12e8146/modules/packstack/manifests/nagios/nrpe.pp at line 31

    # disk used on /var
    file_line{'df_var':
      path => '/etc/nagios/nrpe.cfg',
      match => 'command\[df_var\]=',
      line => "command[df_var]=df /var/ | sed -re 's/.* ([0-9]+)%.*/\\1/' | grep -E '^[0-9]'",
    } ->

[Javier Peña (jpena-c)]

I can't reproduce the issue with the latest master code and Puppet 4. Can you provide some details on your test enviroment (OS, Puppet versions)?

Also, we had https://github.com/openstack/packstack/commit/e6c186af7d5d7881e9a196883c1d538c4d01dcbf merged to fix a similar issue, but based on your description it is already applied.