Merge branch 'Docs-add-info-about-runner-server-requirements' into 'master'
add info about runner server requirements See merge request gitlab-org/gitlab-ce!25242
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@ -208,12 +208,23 @@ you decide to run GitLab Runner and the GitLab Rails application on the same
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machine.
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machine.
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It is also not safe to install everything on a single machine, because of the
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It is also not safe to install everything on a single machine, because of the
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[security reasons](https://docs.gitlab.com/runner/security/)
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[security reasons](https://docs.gitlab.com/runner/security/), especially when you plan to use shell executor with GitLab
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- especially when you plan to use shell executor with GitLab
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Runner.
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Runner.
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We recommend using a separate machine for each GitLab Runner, if you plan to
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We recommend using a separate machine for each GitLab Runner, if you plan to
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use the CI features.
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use the CI features.
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The GitLab Runner server requirements depend on:
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- The type of [executor](https://docs.gitlab.com/runner/executors/) you configured on GitLab Runner.
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- Resources required to run build jobs.
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- Job concurrency settings.
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Since the nature of the jobs varies for each use case, you will need to experiment by adjusting the job concurrency to get the optimum setting.
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For reference, GitLab.com's [auto-scaling shared runner](../user/gitlab_com/index.md#shared-runners) is configured so that a **single job** will run in a **single instance** with:
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- 1vCPU.
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- 3.75GB of RAM.
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## Supported web browsers
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## Supported web browsers
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