How to handle very large build logs

Forked from gitlab-org/gitlab-ci-multi-runner#262

@tmaczukin thanks for that information. I upgraded our gitlab to the last version now I have the raw output button

I have a smal other question, also for the log files. I set on the runner inside /etc/gitlab-runner/config.toml

output_limit = 20000000000

that means the log output can have a size of 20GB

After that I started a build with one of ouer runner servers and after ~700 minutes I cant stop or see the log output insite gitlab because I get after a while a for cancel 502 and for seeing the log 504 https://git.nordwest.freifunk.net/ffnw-firmware/siteconf/builds/146

If there are a way how I can handle so big logfiles? (is an openWRT build for a various of targets, so thos log sizes are normal)

vg Tarek

/cc @2tata