GitLab升级到5.1注意事项
1. GitLab-Shell仍然需要正确配置才能访问GitLab，否则你在远端用git协议pull的时候会看到错误信息：
git pull
/usr/local/lib/ruby/1.9.1/net/http.rb:762:in `initialize': Connection refused - connect(2) (Errno::ECONNREFUSED)
from /usr/local/lib/ruby/1.9.1/net/http.rb:762:in `open'
from /usr/local/lib/ruby/1.9.1/net/http.rb:762:in `block in connect'
from /usr/local/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
from /usr/local/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
from /usr/local/lib/ruby/1.9.1/net/http.rb:762:in `connect'
from /usr/local/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
from /usr/local/lib/ruby/1.9.1/net/http.rb:744:in `start'
from /home/git/gitlab-shell/lib/gitlab_net.rb:56:in `get'
from /home/git/gitlab-shell/lib/gitlab_net.rb:17:in `allowed?'
from /home/git/gitlab-shell/lib/gitlab_shell.rb:51:in `validate_access'
from /home/git/gitlab-shell/lib/gitlab_shell.rb:21:in `exec'
from /home/git/gitlab-shell/bin/gitlab-shell:16:in `<main>'
或者这种错误：
git pull
/usr/local/lib/ruby/1.9.1/net/http.rb:799:in `connect': SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed (OpenSSL::SSL::SSLError)
from /usr/local/lib/ruby/1.9.1/net/http.rb:799:in `block in connect'
from /usr/local/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
from /usr/local/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
from /usr/local/lib/ruby/1.9.1/net/http.rb:799:in `connect'
from /usr/local/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
from /usr/local/lib/ruby/1.9.1/net/http.rb:744:in `start'
from /home/git/gitlab-shell/lib/gitlab_net.rb:56:in `get'
from /home/git/gitlab-shell/lib/gitlab_net.rb:17:in `allowed?'
from /home/git/gitlab-shell/lib/gitlab_shell.rb:51:in `validate_access'
from /home/git/gitlab-shell/lib/gitlab_shell.rb:21:in `exec'
from /home/git/gitlab-shell/bin/gitlab-shell:16:in `<main>'
通过查看/home/git/gitlab-shell/lib/gitlab_net.rb文件的代码可以看到这段：
http.use_ssl = (url.scheme == 'https')
if config.http_settings['self_signed_cert'] && http.use_ssl?
http.verify_mode = OpenSSL::SSL::VERIFY_NONE
end
两个条件：
1.self_signed_cert设置为true
2.url要用https
回到config.yml文件中，这样配置：
# Url to gitlab instance. Used for api calls. Should be ends with slash.
gitlab_url: "https://localhost/"
http_settings:
# user: someone
# password: somepass
self_signed_cert: true
第一个问题搞定。
2. 重启时老看到这个错误：
* Listening on unix:///home/git/gitlab/tmp/sockets/gitlab.socket
/home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/binder.rb:234:in `initialize': Address already in use - /home/git/gitlab/tmp/sockets/gitlab.socket (Errno::EADDRINUSE)
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/binder.rb:234:in `new'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/binder.rb:234:in `add_unix_listener'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/binder.rb:96:in `block in parse'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/binder.rb:64:in `each'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/binder.rb:64:in `parse'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/cli.rb:414:in `run_single'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/lib/puma/cli.rb:402:in `run'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/gems/puma-2.0.0.b7/bin/puma:10:in `<top (required)>'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/bin/puma:23:in `load'
from /home/git/gitlab/vendor/bundle/ruby/1.9.1/bin/puma:23:in `<main>'
处理方法：
1.先用ps-def | grep gitlab 命令找到还运行的进程id，然后kill -9 干掉
2.删除下面的文件
/home/git/gitlab/tmp/sockets/gitlab.socket
现在启动，应该可以了。
GitLab 的详细介绍：请点这里
GitLab 的下载地址：请点这里