announcement_milestone:"14.5"# The milestone when this feature was first announced as deprecated.
removal_milestone:"15.0"# the milestone when this feature is planned to be removed
removal_date:"2022-05-22"
breaking_change:true
body:| # Do not modify this line, instead modify the lines below.
In [GitLab 14.3](https://gitlab.com/gitlab-org/gitlab-runner/-/merge_requests/3074), we added a configuration setting in the GitLab Runner `config.toml`. This setting, [`[runners.ssh.disable_strict_host_key_checking]`](https://docs.gitlab.com/runner/executors/ssh.html#security), controls whether or not to use strict host key checking with the SSH executor.
In GitLab 15.0, the default value for this configuration option has changed from `true` to `false`. This means that strict host key checking will be enforced when using the GitLab Runner SSH executor.
