Update and add checks

lib/tasks/gitlab/check.rake

 namespace :gitlab do
   desc "GITLAB | Check the configuration of GitLab and its environment"
   task check: %w{gitlab:env:check
-                 gitlab:app:check
                  gitlab:gitolite:check
-                 gitlab:resque:check}
+                 gitlab:resque:check
+                 gitlab:app:check}
+
+
   namespace :app do
     desc "GITLAB | Check the configuration of the GitLab Rails app"
     task check: :environment  do
-      print "config/database.yml............"
-      if File.exists?(Rails.root.join "config", "database.yml")
-        puts "exists".green
+      warn_user_is_not_gitlab
+      start_checking "GitLab"
+
+      check_database_config_exists
+      check_database_is_not_sqlite
+      check_migrations_are_up
+      check_gitlab_config_exists
+      check_gitlab_config_not_outdated
+      check_log_writable
+      check_tmp_writable
+      check_init_script_exists
+      check_init_script_up_to_date
+      check_satellites_exist
+
+      finished_checking "GitLab"
+    end
+
+
+    # Checks
+    ########################
+
+    def check_database_config_exists
+      print "Database config exists? ... "
+
+      database_config_file = Rails.root.join("config", "database.yml")
+
+      if File.exists?(database_config_file)
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Copy config/database.yml.<your db> to config/database.yml",
+          "Check that the information in config/database.yml is correct"
+        )
+        for_more_information(
+          see_database_guide,
+          "http://guides.rubyonrails.org/getting_started.html#configuring-a-database"
+        )
+        check_failed
+      end
+    end
+
+    def check_database_is_not_sqlite
+      print "Database is not SQLite ... "
+
+      database_config_file = Rails.root.join("config", "database.yml")
+
+      unless File.read(database_config_file) =~ /sqlite/
+        puts "yes".green
+      else
+        puts "no".red
+        for_more_information(
+          "https://github.com/gitlabhq/gitlabhq/wiki/Migrate-from-SQLite-to-MySQL",
+          see_database_guide
+        )
+        check_failed
+      end
+    end
+
+    def check_gitlab_config_exists
+      print "GitLab config exists? ... "
+
+      gitlab_config_file = Rails.root.join("config", "gitlab.yml")
+
+      if File.exists?(gitlab_config_file)
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Copy config/gitlab.yml.example to config/gitlab.yml",
+          "Update config/gitlab.yml to match your setup"
+        )
+        for_more_information(
+          see_installation_guide_section "GitLab"
+        )
+        check_failed
+      end
+    end
+
+    def check_gitlab_config_not_outdated
+      print "GitLab config not outdated? ... "
+
+      gitlab_config_file = Rails.root.join("config", "gitlab.yml")
+      unless File.exists?(gitlab_config_file)
+        puts "can't check because of previous errors".magenta
+      end
+
+      # omniauth or ldap could have been deleted from the file
+      if File.read(gitlab_config_file) =~ /^web:/
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Copy config/gitlab.yml.example to config/gitlab.yml",
+          "Update config/gitlab.yml to match your setup"
+        )
+        for_more_information(
+          see_installation_guide_section "GitLab"
+        )
+        check_failed
+      end
+    end
+    def check_init_script_exists
+      print "Init script exists? ... "
+
+      script_path = "/etc/init.d/gitlab"
+
+      if File.exists?(script_path)
+        puts "yes".green
       else
-        puts "missing".red
+        puts "no".red
+        try_fixing_it(
+          "Install the init script"
+        )
+        for_more_information(
+          see_installation_guide_section "Install Init Script"
+        )
+        check_failed
+      end
+    end
+
+    def check_init_script_up_to_date
+      print "Init script up-to-date? ... "
+
+      script_path = "/etc/init.d/gitlab"
+      unless File.exists?(script_path)
+        puts "can't check because of previous errors".magenta
         return
       end
-      print "config/gitlab.yml............"
-      if File.exists?(Rails.root.join "config", "gitlab.yml")
-        puts "exists".green
+      recipe_content = `curl https://raw.github.com/gitlabhq/gitlab-recipes/master/init.d/gitlab 2>/dev/null`
+      script_content = File.read(script_path)
+
+      if recipe_content == script_content
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Redownload the init script"
+        )
+        for_more_information(
+          see_installation_guide_section "Install Init Script"
+        )
+        check_failed
+      end
+    end
+
+    def check_migrations_are_up
+      print "All migrations up? ... "
+
+      migration_status =  `bundle exec rake db:migrate:status`
+
+      unless migration_status =~ /down\s+\d{14}/
+        puts "yes".green
       else
-        puts "missing".red
+        puts "no".red
+        try_fixing_it(
+          "sudo -u gitlab -H bundle exec rake db:migrate"
+        )
+        check_failed
+      end
+    end
+
+    def check_satellites_exist
+      print "Projects have satellites? ... "
+
+      unless Project.count > 0
+        puts "can't check, you have no projects".magenta
         return
       end
+      puts ""
+
+      Project.find_each(batch_size: 100) do |project|
+        print "#{project.name.yellow} ... "
+
+        if project.satellite.exists?
+          puts "yes".green
+        else
+          puts "no".red
+          try_fixing_it(
+            "sudo -u gitlab -H bundle exec rake gitlab:app:enable_automerge"
+          )
+          for_more_information(
+            "doc/raketasks/maintenance.md "
+          )
+          check_failed
+        end
+      end
+    end
+
+    def check_log_writable
+      print "Log directory writable? ... "
+
+      log_path = Rails.root.join("log")
+
+      if File.writable?(log_path)
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "sudo chown -R gitlab #{log_path}",
+          "sudo chmod -R rwX #{log_path}"
+        )
+        for_more_information(
+          see_installation_guide_section "GitLab"
+        )
+        check_failed
+      end
+    end
+
+    def check_tmp_writable
+      print "Tmp directory writable? ... "
+
+      tmp_path = Rails.root.join("tmp")
+
+      if File.writable?(tmp_path)
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "sudo chown -R gitlab #{tmp_path}",
+          "sudo chmod -R rwX #{tmp_path}"
+        )
+        for_more_information(
+          see_installation_guide_section "GitLab"
+        )
+        check_failed
+      end
     end
   end
+
+
   namespace :env do
     desc "GITLAB | Check the configuration of the environment"
     task check: :environment  do
+      warn_user_is_not_gitlab
+      start_checking "Environment"
+
+      check_gitlab_in_git_group
+      check_issue_1056_shell_profile_error
+      check_gitlab_git_config
+      check_python2_exists
+      check_python2_version
+
+      finished_checking "Environment"
+    end
+
+
+    # Checks
+    ########################
+
+    def check_gitlab_git_config
+      print "Git configured for gitlab user? ... "
+
+      options = {
+        "user.name"  => "GitLab",
+        "user.email" => Gitlab.config.email_from
+      }
+      correct_options = options.map do |name, value|
+        run("git config --global --get #{name}").try(:squish) == value
+      end
+
+      if correct_options.all?
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "sudo -u gitlab -H git config --global user.name  \"#{options["user.name"]}\"",
+          "sudo -u gitlab -H git config --global user.email \"#{options["user.email"]}\""
+        )
+        for_more_information(
+          see_installation_guide_section "GitLab"
+        )
+        check_failed
+      end
+    end
+
+    def check_gitlab_in_git_group
+      print "gitlab user is in git group? ... "
+
+      if run_and_match("id -rnG", /\Wgit\W/)
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "sudo usermod -a -G git gitlab"
+        )
+        for_more_information(
+          see_installation_guide_section "System Users"
+        )
+        check_failed
+      end
+    end
+
+    # see https://github.com/gitlabhq/gitlabhq/issues/1059
+    def check_issue_1056_shell_profile_error
+      print "Has no \"-e\" in ~git/.profile ... "
+
+      profile_file = File.expand_path("~#{Gitlab.config.ssh_user}/.profile")
+
+      unless File.read(profile_file) =~ /^-e PATH/
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Open #{profile_file}",
+          "Find the line starting with \"-e PATH\"",
+          "Remove \"-e \" so the line starts with PATH"
+        )
+        for_more_information(
+          see_installation_guide_section("Gitolite"),
+          "https://github.com/gitlabhq/gitlabhq/issues/1059"
+        )
+        check_failed
+      end
+    end
+
+    def check_python2_exists
+      print "Has python2? ... "
+
+      # Python prints its version to STDERR
+      # so we can't just use run("python2 --version")
+      if run_and_match("which python2", /python2$/)
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Make sure you have Python 2.5+ installed",
+          "Link it to python2"
+        )
+        for_more_information(
+          see_installation_guide_section "Packages / Dependencies"
+        )
+        check_failed
+      end
+    end
+
+    def check_python2_version
+      print "python2 is supported version? ... "
+
+      # Python prints its version to STDERR
+      # so we can't just use run("python2 --version")
+
+      unless run_and_match("which python2", /python2$/)
+        puts "can't check because of previous errors".magenta
+        return
+      end
+
+      if `python2 --version 2>&1` =~ /2\.[567]\.\d/
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Make sure you have Python 2.5+ installed",
+          "Link it to python2"
+        )
+        for_more_information(
+          see_installation_guide_section "Packages / Dependencies"
+        )
+        check_failed
+      end
     end
   end
+
+
   namespace :gitolite do
     desc "GITLAB | Check the configuration of Gitolite"
     task check: :environment  do
-      git_base_path = Gitlab.config.git_base_path
-      print "#{git_base_path}............"
-      if File.exists?(git_base_path)
-        puts "exists".green
+      warn_user_is_not_gitlab
+      start_checking "Gitolite"
+
+      check_gitolite_is_up_to_date
+      check_gitoliterc_repo_umask
+      check_gitoliterc_git_config_keys
+      check_dot_gitolite_exists
+      check_dot_gitolite_user_and_group
+      check_dot_gitolite_permissions
+      check_repo_base_exists
+      check_repo_base_user_and_group
+      check_repo_base_permissions
+      check_can_clone_gitolite_admin
+      check_can_commit_to_gitolite_admin
+      check_post_receive_hook_exists
+      check_post_receive_hook_is_up_to_date
+      check_repos_post_receive_hooks_is_link
+      check_repos_git_config
+
+      finished_checking "Gitolite"
+    end
+
+
+    # Checks
+    ########################
+
+    def check_can_clone_gitolite_admin
+      print "Can clone gitolite-admin? ... "
+
+      test_path = "/tmp/gitlab_gitolite_admin_test"
+      FileUtils.rm_rf(test_path)
+      `git clone -q #{Gitlab.config.gitolite_admin_uri} #{test_path}`
+      raise unless $?.success?
+
+      puts "yes".green
+    rescue
+      puts "no".red
+      try_fixing_it(
+        "Make sure the \"admin_uri\" is set correctly in config/gitlab.yml",
+        "Try cloning it yourself with:",
+        "  git clone -q #{Gitlab.config.gitolite_admin_uri} /tmp/gitolite-admin",
+        "Make sure Gitolite is installed correctly."
+      )
+      for_more_information(
+        see_installation_guide_section "Gitolite"
+      )
+      check_failed
+    end
+
+    # assumes #check_can_clone_gitolite_admin has been run before
+    def check_can_commit_to_gitolite_admin
+      print "Can commit to gitolite-admin? ... "
+
+      test_path = "/tmp/gitlab_gitolite_admin_test"
+      unless File.exists?(test_path)
+        puts "can't check because of previous errors".magenta
+        return
+      end
+
+      Dir.chdir(test_path) do
+        `touch foo && git add foo && git commit -qm foo`
+        raise unless $?.success?
+      end
+
+      puts "yes".green
+    rescue
+      puts "no".red
+      try_fixing_it(
+        "Try committing to it yourself with:",
+        "  git clone -q #{Gitlab.config.gitolite_admin_uri} /tmp/gitolite-admin",
+        "  touch foo",
+        "  git add foo",
+        "  git commit -m \"foo\"",
+        "Make sure Gitolite is installed correctly."
+      )
+      for_more_information(
+        see_installation_guide_section "Gitolite"
+      )
+      check_failed
+    ensure
+      FileUtils.rm_rf("/tmp/gitolite_gitlab_test")
+    end
+
+    def check_dot_gitolite_exists
+      print "Config directory exists? ... "
+
+      gitolite_config_path = File.expand_path("~#{Gitlab.config.ssh_user}/.gitolite")
+
+      if File.directory?(gitolite_config_path)
+        puts "yes".green
+      else
+        puts "no".red
+        puts "#{gitolite_config_path} is missing".red
+        try_fixing_it(
+          "This should have been created when setting up Gitolite.",
+          "Make sure Gitolite is installed correctly."
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_dot_gitolite_permissions
+      print "Config directory access is drwxr-x---? ... "
+      gitolite_config_path = File.expand_path("~#{Gitlab.config.ssh_user}/.gitolite")
+      unless File.exists?(gitolite_config_path)
+        puts "can't check because of previous errors".magenta
+        return
+      end
+
+      if `stat --printf %a #{gitolite_config_path}` == "750"
+        puts "yes".green
       else
-        puts "missing".red
+        puts "no".red
+        puts "#{gitolite_config_path} is not writable".red
+        try_fixing_it(
+          "sudo chmod 750 #{gitolite_config_path}"
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_dot_gitolite_user_and_group
+      print "Config directory owned by git:git? ... "
+
+      gitolite_config_path = File.expand_path("~#{Gitlab.config.ssh_user}/.gitolite")
+      unless File.exists?(gitolite_config_path)
+        puts "can't check because of previous errors".magenta
         return
       end
-      print "#{git_base_path} is writable?............"
-      if File.stat(git_base_path).writable?
-        puts "YES".green
+      if `stat --printf %U #{gitolite_config_path}` == "git" && # user
+         `stat --printf %G #{gitolite_config_path}` == "git" #group
+        puts "yes".green
+      else
+        puts "no".red
+        puts "#{gitolite_config_path} is not owned by git".red
+        try_fixing_it(
+          "sudo chown -R git:git #{gitolite_config_path}"
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_gitolite_is_up_to_date
+      print "Using recommended version ... "
+      if gitolite_version.try(:start_with?, "v3.04")
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "We strongly recommend using the version pointed out in the installation guide."
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        # this is not a "hard" failure
+      end
+    end
+
+    def check_gitoliterc_git_config_keys
+      gitoliterc_path = File.join(gitolite_home, ".gitolite.rc")
+
+      print "Allow all Git config keys in .gitolite.rc ... "
+      option_name = if has_gitolite3?
+                      # see https://github.com/sitaramc/gitolite/blob/v3.04/src/lib/Gitolite/Rc.pm#L329
+                      "GIT_CONFIG_KEYS"
+                    else
+                      # assume older version
+                      # see https://github.com/sitaramc/gitolite/blob/v2.3/conf/example.gitolite.rc#L49
+                      "$GL_GITCONFIG_KEYS"
+                    end
+      option_value = ".*"
+      if open(gitoliterc_path).grep(/#{option_name}\s*=[>]?\s*["']#{option_value}["']/).any?
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Open #{gitoliterc_path}",
+          "Find the \"#{option_name}\" option",
+          "Change its value to \".*\""
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_gitoliterc_repo_umask
+      gitoliterc_path = File.join(gitolite_home, ".gitolite.rc")
+
+      print "Repo umask is 0007 in .gitolite.rc? ... "
+      option_name = if has_gitolite3?
+                      # see https://github.com/sitaramc/gitolite/blob/v3.04/src/lib/Gitolite/Rc.pm#L328
+                      "UMASK"
+                    else
+                      # assume older version
+                      # see https://github.com/sitaramc/gitolite/blob/v2.3/conf/example.gitolite.rc#L32
+                      "$REPO_UMASK"
+                    end
+      option_value = "0007"
+      if open(gitoliterc_path).grep(/#{option_name}\s*=[>]?\s*#{option_value}/).any?
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "Open #{gitoliterc_path}",
+          "Find the \"#{option_name}\" option",
+          "Change its value to \"0007\""
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_post_receive_hook_exists
+      print "post-receive hook exists? ... "
+
+      hook_file = "post-receive"
+      gitolite_hooks_path = File.join(Gitlab.config.git_hooks_path, "common")
+      gitolite_hook_file = File.join(gitolite_hooks_path, hook_file)
+
+      gitlab_hook_file = Rails.root.join.join("lib", "hooks", hook_file)
+
+      if File.exists?(gitolite_hook_file)
+        puts "yes".green
       else
-        puts "NO".red
+        puts "no".red
+        try_fixing_it(
+          "sudo -u git cp #{gitlab_hook_file} #{gitolite_hook_file}"
+        )
+        for_more_information(
+          see_installation_guide_section "Setup GitLab Hooks"
+        )
+        check_failed
+      end
+    end
+
+    def check_post_receive_hook_is_up_to_date
+      print "post-receive hook up-to-date? ... "
+
+      hook_file = "post-receive"
+      gitolite_hooks_path = File.join(Gitlab.config.git_hooks_path, "common")
+      gitolite_hook_file  = File.join(gitolite_hooks_path, hook_file)
+      gitolite_hook_content = File.read(gitolite_hook_file)
+
+      unless File.exists?(gitolite_hook_file)
+        puts "can't check because of previous errors".magenta
         return
       end
-      FileUtils.rm_rf("/tmp/gitolite_gitlab_test")
-      begin
-        `git clone -q #{Gitlab.config.gitolite_admin_uri} /tmp/gitolite_gitlab_test`
-        raise unless $?.success?
-        print "Can clone gitolite-admin?............"
-        puts "YES".green
-      rescue
-        print "Can clone gitolite-admin?............"
-        puts "NO".red
+      gitlab_hook_file = Rails.root.join.join("lib", "hooks", hook_file)
+      gitlab_hook_content = File.read(gitlab_hook_file)
+
+      if gitolite_hook_content == gitlab_hook_content
+        puts "yes".green
+      else
+        puts "no".red
+        try_fixing_it(
+          "sudo -u git cp #{gitlab_hook_file} #{gitolite_hook_file}"
+        )
+        for_more_information(
+          see_installation_guide_section "Setup GitLab Hooks"
+        )
+        check_failed
+      end
+    end
+
+    def check_repo_base_exists
+      print "Repo base directory exists? ... "
+
+      repo_base_path = Gitlab.config.git_base_path
+
+      if File.exists?(repo_base_path)
+        puts "yes".green
+      else
+        puts "no".red
+        puts "#{repo_base_path} is missing".red
+        try_fixing_it(
+          "This should have been created when setting up Gitolite.",
+          "Make sure it's set correctly in config/gitlab.yml",
+          "Make sure Gitolite is installed correctly."
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_repo_base_permissions
+      print "Repo base access is drwsrws---? ... "
+
+      repo_base_path = Gitlab.config.git_base_path
+      unless File.exists?(repo_base_path)
+        puts "can't check because of previous errors".magenta
         return
       end
-      begin
-        Dir.chdir("/tmp/gitolite_gitlab_test") do
-          `touch blah && git add blah && git commit -qm blah -- blah`
-          raise unless $?.success?
-        end
-        print "Can git commit?............"
-        puts "YES".green
-      rescue
-        print "Can git commit?............"
-        puts "NO".red
+      if `stat --printf %a #{repo_base_path}` == "6770"
+        puts "yes".green
+      else
+        puts "no".red
+        puts "#{repo_base_path} is not writable".red
+        try_fixing_it(
+          "sudo chmod -R ug+rwXs,o-rwx #{repo_base_path}"
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_repo_base_user_and_group
+      print "Repo base owned by git:git? ... "
+
+      repo_base_path = Gitlab.config.git_base_path
+      unless File.exists?(repo_base_path)
+        puts "can't check because of previous errors".magenta
         return
-      ensure
-        FileUtils.rm_rf("/tmp/gitolite_gitlab_test")
       end
-      print "UMASK for .gitolite.rc is 0007? ............"
-      if open(File.absolute_path("#{git_base_path}/../.gitolite.rc")).grep(/UMASK([ \t]*)=([ \t>]*)0007/).any?
-        puts "YES".green
+      if `stat --printf %U #{repo_base_path}` == "git" && # user
+         `stat --printf %G #{repo_base_path}` == "git" #group
+        puts "yes".green
       else
-        puts "NO".red
+        puts "no".red
+        puts "#{repo_base_path} is not owned by git".red
+        try_fixing_it(
+          "sudo chown -R git:git #{repo_base_path}"
+        )
+        for_more_information(
+          see_installation_guide_section "Gitolite"
+        )
+        check_failed
+      end
+    end
+
+    def check_repos_git_config
+      print "Git config in repos: ... "
+
+      unless Project.count > 0
+        puts "can't check, you have no projects".magenta
         return
       end
-      gitolite_hooks_path = File.join(Gitlab.config.git_hooks_path, "common")
-      gitlab_hook_files = ['post-receive']
-      gitlab_hook_files.each do |file_name|
-        dest = File.join(gitolite_hooks_path, file_name)
-        print "#{dest} exists? ............"
-        if File.exists?(dest)
-          puts "YES".green
+      puts ""
+      options = {
+        "core.sharedRepository" => "0660",
+      }
+
+      Project.find_each(batch_size: 100) do |project|
+        print "#{project.name.yellow} ... "
+
+        correct_options = options.map do |name, value|
+          run("git --git-dir=\"#{project.path_to_repo}\" config --get #{name}").try(:chomp) == value
+        end
+
+        if correct_options.all?
+          puts "ok".green
         else
-          puts "NO".red
-          return
+          puts "wrong or missing".red
+          try_fixing_it(
+            "sudo -u gitlab -H bundle exec rake gitlab:gitolite:update_repos"
+          )
+          for_more_information(
+            "doc/raketasks/maintenance.md"
+          )
+          check_failed
         end
       end
-      if Project.count > 0
-        puts "\nValidating projects repositories:".yellow
-        Project.find_each(:batch_size => 100) do |project|
-          print "* #{project.name}....."
-          hook_file = File.join(project.path_to_repo, 'hooks', 'post-receive')
-          unless File.exists?(hook_file)
-            puts "post-receive file missing".red
-            next
-          end
-          original_content = File.read(Rails.root.join('lib', 'hooks', 'post-receive'))
-          new_content = File.read(hook_file)
-          if original_content == new_content
-            puts "post-receive file ok".green
-          else
-            puts "post-receive file content does not match".red
-          end
+    end
+
+    def check_repos_post_receive_hooks_is_link
+      print "post-receive hooks in repos are links: ... "
+
+      hook_file = "post-receive"
+      gitolite_hooks_path = File.join(Gitlab.config.git_hooks_path, "common")
+      gitolite_hook_file  = File.join(gitolite_hooks_path, hook_file)
+
+      unless File.exists?(gitolite_hook_file)
+        puts "can't check because of previous errors".magenta
+        return
+      end
+      unless Project.count > 0
+        puts "can't check, you have no projects".magenta
+        return
+      end
+      puts ""
+      Project.find_each(batch_size: 100) do |project|
+        print "#{project.name.yellow} ... "
+        project_hook_file = File.join(project.path_to_repo, "hooks", hook_file)
+        unless File.exists?(project_hook_file)
+          puts "missing".red
+          try_fixing_it(
+            "sudo -u git ln -sf #{gitolite_hook_file} #{project_hook_file}"
+          )
+          for_more_information(
+            "lib/support/rewrite-hooks.sh"
+          )
+          check_failed
+          next
+        end
+        if run_and_match("stat --format %N #{project_hook_file}", /#{hook_file}.+->.+#{gitolite_hook_file}/)
+          puts "ok".green
+        else
+          puts "not a link to Gitolite's hook".red
+          try_fixing_it(
+            "sudo -u git ln -sf #{gitolite_hook_file} #{project_hook_file}"
+          )
+          for_more_information(
+            "lib/support/rewrite-hooks.sh"
+          )
+          check_failed
         end
       end
     end
+
+
+    # Helper methods
+    ########################
+
+    def gitolite_home
+      File.expand_path("~#{Gitlab.config.ssh_user}")
+    end
+
+    def gitolite_version
+      gitolite_version_file = "#{gitolite_home}/gitolite/src/VERSION"
+      if File.readable?(gitolite_version_file)
+        File.read(gitolite_version_file)
+      end
+    end
+
+    def has_gitolite3?
+      gitolite_version.try(:start_with?, "v3.")
+    end
   end
+
+
   namespace :resque do
     desc "GITLAB | Check the configuration of Resque"
     task check: :environment  do
+      warn_user_is_not_gitlab
+      start_checking "Resque"
+
+      check_resque_running
+
+      finished_checking "Resque"
+    end
+
+
+    # Checks
+    ########################
+
+    def check_resque_running
+      print "Running? ... "
+
+      if run_and_match("ps aux | grep -i resque", /resque-[\d\.]+:.+$/)
+        puts "yes".green
+      else
+        puts "no".red
+        puts "#{repo_base_path} is not owned by git".red
+        try_fixing_it(
+          "sudo service gitlab restart",
+          "or",
+          "sudo /etc/init.d/gitlab restart"
+        )
+        for_more_information(
+          see_installation_guide_section("Install Init Script"),
+          "see log/resque.log for possible errors"
+        )
+        check_failed
+      end
+    end
+  end
+
+
+  # Helper methods
+  ##########################
+
+  def check_failed
+    puts "  Please #{"fix the error above"} and rerun the checks.".red
+  end
+
+  def for_more_information(*sources)
+    sources = sources.shift if sources.first.is_a?(Array)
+
+    puts "  For more information see:".blue
+    sources.each do |source|
+      puts "  #{source}"
+    end
+  end
+
+  def finished_checking(component)
+    puts ""
+    puts "Checking #{component.yellow} ... #{"Finished".green}"
+    puts ""
+  end
+
+  # Runs the given command
+  #
+  # Returns nil if the command was not found
+  # Returns the output of the command otherwise
+  #
+  # see also #run_and_match
+  def run(command)
+    unless `#{command} 2>/dev/null`.blank?
+      `#{command}`
+    end
+  end
+
+  # Runs the given command and matches the output agains the given pattern
+  #
+  # Returns nil if nothing matched
+  # Retunrs the MatchData if the pattern matched
+  #
+  # see also #run
+  # see also String#match
+  def run_and_match(command, pattern)
+    run(command).try(:match, pattern)
+  end
+
+  def see_database_guide
+    "doc/install/databases.md"
+  end
+
+  def see_installation_guide_section(section)
+    "doc/install/installation.md in section \"#{section}\""
+  end
+
+  def start_checking(component)
+    puts "Checking #{component.yellow} ..."
+    puts ""
+  end
+
+  def try_fixing_it(*steps)
+    steps = steps.shift if steps.first.is_a?(Array)
+
+    puts "  Try fixing it:".blue
+    steps.each do |step|
+      puts "  #{step}"
+    end
+  end
+
+  def warn_user_is_not_gitlab
+    unless @warned_user_not_gitlab
+      current_user = run("whoami").chomp
+      unless current_user == "gitlab"
+        puts "#{Colored.color(:black)+Colored.color(:on_yellow)} Warning #{Colored.extra(:clear)}"
+        puts "  You are running as user #{current_user.magenta}, we hope you know what you are doing."
+        puts "  Some tests may pass\/fail for the wrong reason."
+        puts "  For meaningful results you should run this as user #{"gitlab".magenta}."
+        puts ""
+      end
+      @warned_user_not_gitlab = true
     end
   end
 end

lib/tasks/gitlab/info.rake

@@ -84,7 +84,13 @@ namespace :gitlab do
     # Helper methods
-    # Runs the given command and matches the output agains the given RegExp
+    # Runs the given command and matches the output agains the given pattern
+    #
+    # Returns nil if nothing matched
+    # Retunrs the MatchData if the pattern matched
+    #
+    # see also #run
+    # see also String#match
     def run_and_match(command, regexp)
       run(command).try(:match, regexp)
     end
@@ -93,6 +99,8 @@ namespace :gitlab do
     #
     # Returns nil if the command was not found
     # Returns the output of the command otherwise
+    #
+    # see also #run_and_match
     def run(command)
       unless `#{command} 2>/dev/null`.blank?
         `#{command}`