*_by_lua_block directives break Letsencrypt's certbot

[pmontrasio]

This is more of an issue for certbot than for this project but maybe there are some mitigating actions that you could do.

Any directive which includes a lua block like this one breaks certbot's parser and makes the automatic certificate renewal process fail.

        location = /ip-address {
                default_type text/plain;
                content_by_lua_block {
                        ngx.say(ngx.var.remote_addr)
                }
        }

There are at least a couple of issues for that on certbot's tracker with he details of what's going on

• https://github.com/certbot/certbot/issues/5194
• https://github.com/certbot/certbot/issues/9066

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.4 LTS
Release:	18.04
Codename:	bionic

$ dpkg -l "*nginx*"
ii  nginx-common                1.14.0-0ubuntu1.9  all                small, powerful, scalable web/proxy server - common files
ii  nginx-extras                1.14.0-0ubuntu1.9  amd64              nginx web/proxy server (extended version)
ii  libnginx-mod-http-lua       1.14.0-0ubuntu1.9  amd64              Lua module for Nginx
...

[zhuizhuhaomeng]

For now, you can change from *_by_lua_block to _by_lua_file or *_by_lua.