Open vSwitch 安装失败 - SSL 错误：02001002：系统库：fopen：没有此文件或目录：

Question

我正在安装（OVS v2.7.0你可以检查兼容性Ubuntu 14.04kernel version 4.4.0-142-generic这里）来自来源。

git clone https://github.com/openvswitch/ovs
cd ovs
git checkout v2.7.0
./boot.sh
./configure --with-linux=/lib/modules/`uname -r`/build --prefix=/home/john14/ovs-build
make
make install

上述命令运行正常，没有错误；然而，当我这样做时，会弹出一个错误

make modules_install

输出如下：

cd datapath/linux && make modules_install
make[1]: Entering directory `/home/john14/Desktop/ovs/datapath/linux'
make -C /lib/modules/4.4.0-142-generic/build M=/home/john14/Desktop/ovs/datapath/linux modules_install
make[2]: Entering directory `/usr/src/linux-headers-4.4.0-142-generic'
  INSTALL /home/john14/Desktop/ovs/datapath/linux/openvswitch.ko
At main.c:222:
- SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:169
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:172
sign-file: certs/signing_key.pem: No such file or directory
  INSTALL /home/john14/Desktop/ovs/datapath/linux/vport-geneve.ko
At main.c:222:
- SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:169
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:172
sign-file: certs/signing_key.pem: No such file or directory
  INSTALL /home/john14/Desktop/ovs/datapath/linux/vport-gre.ko
At main.c:222:
- SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:169
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:172
sign-file: certs/signing_key.pem: No such file or directory
  INSTALL /home/john14/Desktop/ovs/datapath/linux/vport-lisp.ko
At main.c:222:
- SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:169
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:172
sign-file: certs/signing_key.pem: No such file or directory
  INSTALL /home/john14/Desktop/ovs/datapath/linux/vport-stt.ko
At main.c:222:
- SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:169
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:172
sign-file: certs/signing_key.pem: No such file or directory
  INSTALL /home/john14/Desktop/ovs/datapath/linux/vport-vxlan.ko
At main.c:222:
- SSL error:02001002:system library:fopen:No such file or directory: bss_file.c:169
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: bss_file.c:172
sign-file: certs/signing_key.pem: No such file or directory
  DEPMOD  4.4.0-142-generic
make[2]: Leaving directory `/usr/src/linux-headers-4.4.0-142-generic'
depmod `sed -n 's/#define UTS_RELEASE "\([^"]*\)"/\1/p' /lib/modules/4.4.0-142-generic/build/include/generated/utsrelease.h`
make[1]: Leaving directory `/home/john14/Desktop/ovs/datapath/linux'

我访问了一些有关问题的链接（见这里， 和这里），但这些链接中提到的解决方案要么不适用于我的情况（安装 Open vSwitch），要么根本对我不起作用。

如果您能向我解释一些安装模块的适用方法，我将不胜感激。谢谢。

附言：我在 上运行 Ubuntu 14.04 virtualbox。我看到一些链接（例如这) 有关dkms可能导致我的 SSL 错误的问题，但它们也不起作用。