expect による HTTPD の死活監視設定。


expect -f httpd.exp

[httpd.expの内容]

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# expect による http サーバプロセス監視、再起動
# don't echo the dialog
log_user 0

spawn telnet localhost 80
expect {
    "Connected to" {}
    default {
        # try to restart
        # use catch so we don't report errors on the exec,
        # only on the dialog itself
        catch {exec /etc/rc.d/init.d/httpd restart >&/dev/null}
        sleep 5
        # redo test, fail if get an error again
        spawn telnet localhost 80
        expect {
            "Connected to" {}
            default {
                flush stdout;
                exit 1;
            }
        }
    }
}

# GET HTTP HEADER
send "HEAD / HTTP/1.0\r"
send "\r"
expect {
    "HTTP/1.1 200 OK" {}
    default { # fail if we don't get an OK
        flush stdout;
        exit 2;
    }
}

exit 0;
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