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[2003:cc:9f3b:4cdc:10ec:dbe:4068:cbc4]) by smtp.gmail.com with ESMTPSA id t189sm17231588wma.4.2020.06.14.02.25.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 14 Jun 2020 02:25:53 -0700 (PDT) Subject: Re: "kubectl exec" in Cygwin gets "Upgrade request required", but not in cmd shell To: David Karr Cc: The Cygwin Mailing List References: From: Marco Atzeri Message-ID: Date: Sun, 14 Jun 2020 11:25:52 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: it Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 14 Jun 2020 09:25:58 -0000 On 14.06.2020 08:12, David Karr wrote: > > > On Sat, Jun 13, 2020 at 10:31 PM Marco Atzeri via Cygwin wrote: > > On 13.06.2020 20:53, David Karr via Cygwin wrote: > > I've been using kubectl in Cygwin on Windows 10 for quite a while, to > > communicate to our in-house k8s clusters. I often use "kubectl > exec" to > > open a shell in a container or directly execute a shell command. > This has > > worked perfectly fine for a long time. > > > > A couple of days ago, I discovered that all of these attempts > were failing > > with "Upgrade request required".  I hadn't upgraded kubectl or > Cygwin in > > quite a while. I doubt our clusters had a k8s upgrade, but it's > entirely > > possible. > > > > A colleague of mine has a very similar desktop configuration > (Windows 10, > > Cygwin), and he's not seeing this symptom. > > > > I noticed that when I ran "kubectl exec" with max verbosity, it > shows the > > resulting "curl" command that it runs. I tried that resulting > command, and > > it results in the same response. I then tried updating my Cygwin > tools and > > retesting, no change. > > > > I then took the entire resulting "kubectl exec" command line and > ran it in > > a "cmd" shell.  No problem at all.  No error. > > > > I know I haven't provided much useful information yet. I wanted > to get an > > initial response before I started providing those diagnostics. Is > there a > > clear issue here that I'm not aware of? > > -- > > from where is kubectl coming from ? > > In cygwin I found only a kubectl.py in the ansible package > > > It's from here: > https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl-on-windows > . so it is NOT a cygwin program. If the warning is coming about curl, it is likely that using from cygwin you are using the cygwin curl and from CMD the windows one $ which -a curl /usr/bin/curl /cygdrive/c/WINDOWS/system32/curl $ /cygdrive/c/WINDOWS/system32/curl -V curl 7.55.1 (Windows) libcurl/7.55.1 WinSSL Release-Date: 2017-11-14, security patched: 2019-11-05 Protocols: dict file ftp ftps http https imap imaps pop3 pop3s smtp smtps telnet tftp Features: AsynchDNS IPv6 Largefile SSPI Kerberos SPNEGO NTLM SSL $ /usr/bin/curl -V curl 7.66.0 (x86_64-pc-cygwin) libcurl/7.66.0 OpenSSL/1.1.1f zlib/1.2.11 brotli/1.0.7 libidn2/2.2.0 libpsl/0.21.0 (+libidn2/2.0.4) libssh/0.8.7/openssl/zlib nghttp2/1.37.0 Release-Date: 2019-09-11 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp Features: AsynchDNS brotli Debug GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz Metalink NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP TrackMemory UnixSockets the support Forum https://discuss.kubernetes.io/ is probably the most indicate place for guidance Regards Marco