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  • The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.

Question Plesk Update Error

DragonMaster

Basic Pleskian
・OS5.1
・Plesk12>18

Plesk Update Error

h.request(req.get_method(), req.get_selector(), req.data, headers)
File "/usr/lib64/python2.4/httplib.py", line 810, in request
self._send_request(method, url, body, headers)
File "/usr/lib64/python2.4/httplib.py", line 833, in _send_request
self.endheaders()
File "/usr/lib64/python2.4/httplib.py", line 804, in endheaders
self._send_output()
File "/usr/lib64/python2.4/httplib.py", line 685, in _send_output
self.send(msg)
File "/usr/lib64/python2.4/httplib.py", line 652, in send
self.connect()
File "/usr/lib64/python2.4/site-packages/M2Crypto/httpslib.py", line 55, in connect
sock.connect((self.host, self.port))
File "/usr/lib64/python2.4/site-packages/M2Crypto/SSL/Connection.py", line 174, in connect
ret = self.connect_ssl()
File "/usr/lib64/python2.4/site-packages/M2Crypto/SSL/Connection.py", line 167, in connect_ssl
return m2.ssl_connect(self.ssl, self._timeout)
M2Crypto.SSL.SSLError: unknown protocol
 
Plesk supports dist-upgrade only for the following OSes:

Ubuntu 20 > Ubuntu 22
Ubuntu 20 on ARM > Ubuntu 22 on ARM
Ubuntu 18 > Ubuntu 20
Ubuntu 16 > Ubuntu 18
Debian 10 > Debian 11
Debian 9 > Debian 10

Dist-upgrade on CentOS operating systems is not supported.
 
@DragonMaster The same question has been answered in your other thread
in depth a few days ago.

It is still not possible to update from CentOS 5.5. You are using an operating system that is long "end of life". It is not supported by newer Plesk version. No, you cannot update your Plesk on CentOS 5.5. CentOS 5.5 is not supported by newer Plesk versions.

You need to setup a new server with a newer, supported operating system. Then you can migrate your Plesk using the Plesk Migrator extension from your old server to the new server. It is still the same situation as explained in Question - Plesk12.5 to 17.8 Update Error

In your thread Question - Plesk12.5 to 17.8 Update Error you also got links to a detailed manual for Plesk Migrator and Plesk Professional Services.

You cannot continue to use CentOS 5.5 if you want to use newer Plesk versions. You must first setup a new server with a new operating system. Then you can migrate your Plesk installation from your old server to the new server.
 
・https://******8443 500error
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▼Plesk Error

# service sw-engine restart && service sw-cp-server restart
Stopping sw-engine-fpm: [ OK ]
Starting sw-engine-fpm: /usr/sbin/sw-engine-fpm: /usr/local/lib/libpng12.so.0: no version information available (required by /usr/sbin/sw-engine-fpm)
[ OK ]
nginx: [emerg] SSL_CTX_set_cipher_list("ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256") failed (SSL: error:1410D0B9:SSL routines:SSL_CTX_set_cipher_list:no cipher match)
nginx: configuration file /etc/sw-cp-server/config test failed
 
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