gitlab upgrade 更新

https://docs.gitlab.com/omnibus/update/

https://about.gitlab.com/update/#centos-7

sudo yum install gitlab-ce
...
gitlab preinstall: It seems you are upgrading from 10.x version series
gitlab preinstall: to 11.x series. It is recommended to upgrade
gitlab preinstall: to the last minor version in a major version series first before
gitlab preinstall: jumping to the next major version.
gitlab preinstall: Please follow the upgrade documentation at 
https://docs.gitlab.com/ee/policy/maintenance.html#upgrade-recommendations

失敗

→ マイナーバージョンを最新にする

sudo yum install gitlab-ce-10.8.7-ce.0.el7.x86_64

再度更新

sudo yum install gitlab-ce

GitLab-CE(Omnibus)8を11までアップグレードさせる - namio's blog