instance: daemon manager running; daemon process not running

hi,everyone:
I added a OnlyOffice plugin to Plone5.0.4,Then Plone stopped working,I don't know what to do. Please help me.


and this is my buildout.cfg
[buildout]
extends =
base.cfg
versions.cfg
index = https://pypi.python.org/simple/
find-links +=
http://dist.plone.org/release/5.0.4
effective-user = plone_daemon
buildout-user = plone_buildout
eggs =
Plone
Pillow
onlyoffice.connector
zcml =
develop =
var-dir=${buildout:directory}/var
backups-dir=${buildout:var-dir}
user=admin:admin
deprecation-warnings = off
verbose-security = off
parts =
instance
repozo
backup
zopepy
unifiedinstaller
precompiler
setpermissions
[instance]
<= instance_base
recipe = plone.recipe.zope2instance
http-address = 8080
[versions]
setuptools =
zc.buildout =
bobtemplates.plone = 1.0.1
buildout.sanitycheck = 1.0.2
collective.checkdocs = 0.2
collective.recipe.backup = 3.0.0
colorama = 0.3.7
MarkupSafe = 0.23
mr.bob = 0.1.2
pkginfo = 1.2.1
plone.recipe.unifiedinstaller = 4.3.2
Products.DocFinderTab = 1.0.5
requests-toolbelt = 0.6.0
twine = 1.6.5
zest.pocompile = 1.4
zest.releaser = 6.6.4
plone.schema = 1.0.0
plone.api = 1.8.4

Run Plone in foreground outside the control of supervisor and check for console message or check your Plone error.log

The usual approach is to first update Plone to its latest version for that release: 5.0.10 in your case.

My guess would be that plone.restapi 2.2.1 depends on components which are newer than what is available in your installation.

You will get a nice and clear traceback if you run Plone in foreground mode, e.g. ./bin/plonectl client1 fg
Please post it here, formatted as code (3 backticks at beginning and end).

Some background to understand the message from your title:
When you start Plone in the background, the Plone process itself is named the "daemon" (because it runs as "daemon", i.e. detached from the terminal and process group). The Plone process is supervised by the so called "daemon manager" - which restarts Plone should it die. and can interact with your instance/client commands (e.g. stop, restart, status, ...).

In your case, the "manager" is running and "Plone" is not running - likely due to startup problems. Andreas has already told you how to analyze startup problems.

instance: 2020-08-04 08:09:40 INFO ZServer HTTP server started at Tue Aug 4 08:09:40 2020
Hostname: 0.0.0.0
Port: 8080
2020-08-04 08:09:40 INFO Zope Set effective user to "plone_daemon"
2020-08-04 08:09:42 WARNING ZODB.blob (53986) Blob dir /opt/plone/zinstance/var/blobstorage/ has insecure mode setting
Traceback (most recent call last):
File "/opt/plone/zinstance/parts/instance/bin/interpreter", line 282, in
exec(compile(__file__f.read(), file, "exec"))
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/Startup/run.py", line 76, in
run()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/Startup/run.py", line 22, in run
starter.prepare()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/Startup/init.py", line 92, in prepare
self.startZope()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/Startup/init.py", line 268, in startZope
Zope2.startup()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/init.py", line 47, in startup
_startup()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/App/startup.py", line 118, in startup
load_zcml()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/App/startup.py", line 52, in load_zcml
load_site()
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/Zope2/App/zcml.py", line 46, in load_site
_context = xmlconfig.file(site_zcml)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 649, in file
include(context, name, package)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/Zope2-2.13.24-py2.7.egg/OFS/metaconfigure.py", line 46, in loadProducts
xmlconfig.include(_context, zcml, package=product)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/z3c.autoinclude-0.3.5-py2.7.egg/z3c/autoinclude/zcml.py", line 104, in includePluginsDirective
includeZCMLGroup(_context, info, filename)
File "/opt/plone/buildout-cache/eggs/z3c.autoinclude-0.3.5-py2.7.egg/z3c/autoinclude/zcml.py", line 30, in includeZCMLGroup
include(_context, filename, includable_package)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 706, in finish
actions = self.handler(context, **args)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 548, in include
processxmlfile(f, context)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 380, in processxmlfile
parser.parse(src)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 110, in parse
xmlreader.IncrementalParser.parse(self, source)
File "/usr/lib/python2.7/xml/sax/xmlreader.py", line 123, in parse
self.feed(buffer)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 213, in feed
self._parser.Parse(data, isFinal)
File "/usr/lib/python2.7/xml/sax/expatreader.py", line 365, in end_element_ns
self._cont_handler.endElementNS(pair, None)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/xmlconfig.py", line 359, in endElementNS
self.context.end()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 558, in end
self.stack.pop().finish()
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 705, in finish
args = toargs(context, *self.argdata)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 1397, in toargs
args[str(name)] = field.fromUnicode(s)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/fields.py", line 137, in fromUnicode
value = self.context.resolve(name)
File "/opt/plone/buildout-cache/eggs/zope.configuration-3.7.4-py2.7.egg/zope/configuration/config.py", line 179, in resolve
mod = import(mname, *_import_chickens)
File "/opt/plone/buildout-cache/eggs/onlyoffice.connector-1.0.0-py2.7.egg/onlyoffice/connector/browser/api.py", line 14, in
from urllib.request import urlopen
zope.configuration.xmlconfig.ZopeXMLConfigurationError: File "/opt/plone/zinstance/parts/instance/etc/site.zcml", line 16.2-16.23
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/Products.ATContentTypes-2.2.11-py2.7.egg/Products/ATContentTypes/configure.zcml", line 18.2-18.44
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/plone.app.collection-1.1.6-py2.7.egg/plone/app/collection/configure.zcml", line 9.2-9.45
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/plone.app.querystring-1.3.14-py2.7.egg/plone/app/querystring/configure.zcml", line 11.2-11.42
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/plone.app.registry-1.3.11-py2.7.egg/plone/app/registry/configure.zcml", line 12.4-12.34
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/plone.app.registry-1.3.11-py2.7.egg/plone/app/registry/browser/configure.zcml", line 6.4-6.43
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/plone.app.z3cform-1.2.0-py2.7.egg/plone/app/z3cform/configure.zcml", line 10.2-10.41
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/plone.app.widgets-2.0.4-py2.7.egg/plone/app/widgets/configure.zcml", line 12.2-12.41
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/Products.CMFPlone-5.0.4-py2.7.egg/Products/CMFPlone/configure.zcml", line 108.4-112.10
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/onlyoffice.connector-1.0.0-py2.7.egg/onlyoffice/connector/configure.zcml", line 17.2-17.32
ZopeXMLConfigurationError: File "/opt/plone/buildout-cache/eggs/onlyoffice.connector-1.0.0-py2.7.egg/onlyoffice/connector/browser/configure.zcml", line 24.2-30.8
ImportError: No module named request
root@ieucd-virtual-machine:/opt/plone/zinstance#

ImportError: No module named request
i think this is root cause,but i can't deal with it.

when my plone version is 5.1.4, It still won't start, I trying to used 'bin/plonectl fg' start it,but the error log is ' ZConfig.ConfigurationError: There was a problem starting a server of type "HTTPServer". This may mean that your user does not have permission to bind to the port which the server is trying to use or the port may already be in use by another application. (Address already in use) ' , I'm sure there will be no port conflicts.

My Python version is 2.7.12,maybe it's root cause?

Apparently, onlyoffice.connector==1.0.0 is Python 3 only (and you are running your Plone with Python 2). Look for a version that still supports Python 2 and "pin" this version.

The OnlyOffice connector requires Python 3. There is no Python 2 compatible version.

Can you tell me witch version plone install use directly python 3,i want try it.

the Plone-5.2.1-UnifiedInstaller-r3.tgz only 5MB,It looks a little question。

You can use Plone 5.2+ with Python 3

That Plone-5.2b1-UnifiedInstaller verson is ok?

when install Plone5.2+,the err log is 'Note: gnu patch program is required for the install. Exiting now.'

used python 3.5

That Plone-5.2b1-UnifiedInstaller verson is ok?

Beta 1? Seem a bit outdated.
Current release is 5.2.1 - see https://plone.org/download/releases/5.2.1
(currently a 5.2.2 release with many bug-fixes is in the making/short before release)

Python 3.6+3.7 are the officially supported Python versions for Plone 5.2. Stick with these versions!
In particular Plone add-ons may use (or not) particular Python 3.X specific features. Python 3.5 is clearly too old.

the Plone-5.2.1-UnifiedInstaller-r3.tgz only 5MB,It looks a little question。

5.2 series installers no longer include pre-built Python packages. With both Python 2.7 and 3.x supported, the tarball would have been way too large. Instead, packages are fetched from PyPI.

i'm from China, Many installation packages don't download for me,because the GFW,I'm going crazy
:sweat_smile:

Plone Foundation Code of Conduct