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ログインしないでSSH接続できるかをまとめて確認する

Last updated at Posted at 2015-11-10

know_hosts にないホストの接続は yes/no確認が出でるので .ssh/config に以下を記述する。※ echo yes | もありっちゃありだが。

Host *
    StrictHostKeyChecking no

以下をファイルに保存して実行。

  • .ssh/configで指定したホスト名なら username@ の指定は不要。
  • エラーメッセージも出したければ -qオプションをはずす。
# ホストの一覧
check_hosts=(
    server1
    server2
    server3
    server4
    ...
)

for host in ${check_hosts[*]}
do
    ssh -q username@${host} -- :;
    if [ $? = 0 ]; then
        echo -e "\033[36m$host: ssh connection OK\033[0m"
    else
        echo -e "\033[31m$host: ssh connection denied\033[0m"
    fi
done
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