Error while pushing to github repo

Question

I receive the following error when pushing my commits

remote: warning: File var/log/system.log is 57.82 MB; this is larger than recommended maximum file size of 50 MB
remote: error: GH001: Large files detected.
remote: error: Trace: 96d01231dffac3fbc3ba1eb2e9f01a93
remote: error: See http://git.io/iEPt8g for more information.
remote: error: File var/report/752246136671 is 100.86 MB; this exceeds github's file size limit of 100 MB

I tried the following the commands listed step by step below:

git push -u origin master

cant find these in git files to commit when i typed git status.

Could you please let me know how to push my changes to repo without these errors ? I guess these files are in github index . I also tried git rm --cached var/log/system.log. but no results.

hitting my head to wall !

UPDATE 1 Kindly find the Gists here based on the two answers from experts below:

• answer#1 - https://gist.github.com/haijerome/9405598
• answer#2 -https://gist.github.com/haijerome/9405492

UPDATE 2 Kindly find below the git Log details for the both the files that i tried to remove:

• https://gist.github.com/haijerome/9406273
• https://gist.github.com/haijerome/9406263

ANSWER THAT WORKED

Please find the gist for the final answer that solved my issue

• https://gist.github.com/haijerome/9478989

credits to git experts VonC, Holger Just and all other experts who have provided their inputs and ofcourse to stackoverflow.

Answer 1

git rm or git rm --cached isn't enough to remove that file fir the history stored in your repo.

You need to:

• use BFG Repo Cleaner, as suggested above.

  bfg --strip-blobs-bigger-than 1M  my-repo.git
  

• use git gc --agrressive --prune=now (after BFG), as detailed in "Reduce git repository size"

• git push -f to force the new history on your remote repo.