Fix missing /usr/local/CyberCP/bin/python for cron and IncBackups

Add plogical/cyberpanel_python.py with resolve_cyberpanel_python() and
ensure_cyberpanel_bin_python_shim() (symlink to system Python when venv
binary is absent). Call shim before writing root crontab on install/upgrade,
and from IncBackups/IncScheduler.py so existing jobs self-heal. IncBackups
views use resolved interpreter for backupUtilities. Upgrade._python_for_manage
delegates to resolve_cyberpanel_python().

IncBackups/IncScheduler.py

@@ -1,17 +1,25 @@
 import argparse
 import sys
-sys.path.append('/usr/local/CyberCP')
+
+sys.path.append("/usr/local/CyberCP")
+from plogical.cyberpanel_python import ensure_cyberpanel_bin_python_shim, resolve_cyberpanel_python
 from plogical.processUtilities import ProcessUtilities
 
-def main():
 
-    parser = argparse.ArgumentParser(description='CyberPanel Installer')
-    parser.add_argument('function', help='Specific a function to call!')
+def main():
+    try:
+        ensure_cyberpanel_bin_python_shim()
+    except BaseException:
+        pass
+
+    parser = argparse.ArgumentParser(description="CyberPanel incremental backup cron wrapper")
+    parser.add_argument("function", help="Function name to pass to plogical/IncScheduler.py")
     args = parser.parse_args()
 
-    command = f"/usr/local/CyberCP/bin/python /usr/local/CyberCP/plogical/IncScheduler.py '{args.function}'"
+    py = resolve_cyberpanel_python()
+    command = "%s /usr/local/CyberCP/plogical/IncScheduler.py '%s'" % (py, args.function)
     ProcessUtilities.normalExecutioner(command)
 
 
 if __name__ == "__main__":
-    main()
+    main()

IncBackups/views.py

@@ -108,7 +108,8 @@ def add_destination(request):
                 final_json = json.dumps(final_dic)
                 return HttpResponse(final_json)
 
-            python_path = Path('/usr/local/CyberCP/bin/python')
+            from plogical.cyberpanel_python import resolve_cyberpanel_python
+            python_path = Path(resolve_cyberpanel_python())
             backup_utils = Path(vhu.cyberPanel) / "plogical/backupUtilities.py"
 
             exec_args = "submitDestinationCreation --ipAddress %s --password %s --port %s --user %s" % \

install/install.py

@@ -5498,6 +5498,14 @@ user_query = SELECT email as user, password, 'vmail' as uid, 'vmail' as gid, '/h
             else:
                 cronPath = '/var/spool/cron/crontabs/root'
 
+            try:
+                if '/usr/local/CyberCP' not in sys.path:
+                    sys.path.insert(0, '/usr/local/CyberCP')
+                from plogical.cyberpanel_python import ensure_cyberpanel_bin_python_shim
+                ensure_cyberpanel_bin_python_shim()
+            except BaseException:
+                pass
+
             cronFile = open(cronPath, "w")
 
             # Randomize acme.sh and renew.py cron schedules to avoid traffic spikes to Let's Encrypt

plogical/cyberpanel_python.py

@@ -0,0 +1,67 @@
+# -*- coding: utf-8 -*-
+"""
+Resolve the Python interpreter for CyberPanel CLI and cron jobs.
+
+Some installs omit /usr/local/CyberCP/bin/python (no venv). We symlink that path
+to a working interpreter when missing so existing crontab lines keep working.
+"""
+from __future__ import annotations
+
+import os
+
+_CANDIDATES = (
+    "/usr/local/CyberPanel/bin/python",
+    "/usr/local/CyberCP/bin/python",
+    "/usr/bin/python3",
+    "/usr/local/bin/python3",
+)
+
+
+def resolve_cyberpanel_python() -> str:
+    """Return first existing executable candidate, else /usr/bin/python3."""
+    for path in _CANDIDATES:
+        if path == "/usr/local/CyberCP/bin/python":
+            continue
+        if path and os.path.isfile(path) and os.access(path, os.X_OK):
+            return path
+    return "/usr/bin/python3"
+
+
+def ensure_cyberpanel_bin_python_shim() -> None:
+    """
+    If /usr/local/CyberCP/bin/python is missing or a broken symlink, replace with
+    symlink to resolve_cyberpanel_python(). Non-destructive for a real venv file.
+    """
+    bin_dir = "/usr/local/CyberCP/bin"
+    legacy = os.path.join(bin_dir, "python")
+    try:
+        os.makedirs(bin_dir, exist_ok=True)
+    except OSError:
+        return
+
+    if os.path.isfile(legacy) and os.access(legacy, os.X_OK) and not os.path.islink(legacy):
+        return
+
+    if os.path.islink(legacy):
+        real = os.path.realpath(legacy)
+        if os.path.isfile(real) and os.access(real, os.X_OK):
+            return
+        try:
+            os.unlink(legacy)
+        except OSError:
+            return
+
+    if os.path.lexists(legacy):
+        try:
+            os.remove(legacy)
+        except OSError:
+            try:
+                os.unlink(legacy)
+            except OSError:
+                return
+
+    target = resolve_cyberpanel_python()
+    try:
+        os.symlink(target, legacy)
+    except OSError:
+        pass

plogical/upgrade.py

@@ -3850,11 +3850,9 @@ passdb {
 
     @staticmethod
     def _python_for_manage():
-        """Resolve Python for manage.py (avoid FileNotFoundError when /usr/local/CyberPanel/bin/python missing)."""
-        for path in ('/usr/local/CyberPanel/bin/python', '/usr/local/CyberCP/bin/python', '/usr/bin/python3', '/usr/local/bin/python3'):
-            if path and os.path.isfile(path) and os.access(path, os.X_OK):
-                return path
-        return '/usr/bin/python3'
+        """Resolve Python for manage.py (avoid FileNotFoundError when venv python missing)."""
+        from plogical.cyberpanel_python import resolve_cyberpanel_python
+        return resolve_cyberpanel_python()
 
     @staticmethod
     def GeneralMigrations():
@@ -6231,6 +6229,12 @@ vmail
         if os.path.exists(cronPath):
             data = open(cronPath, 'r').read()
 
+            try:
+                from plogical.cyberpanel_python import ensure_cyberpanel_bin_python_shim
+                ensure_cyberpanel_bin_python_shim()
+            except BaseException:
+                pass
+
             if data.find('findBWUsage') == -1:
                 # Randomize acme.sh and renew.py cron schedules to avoid traffic spikes to Let's Encrypt
                 # Each installation gets a random day (0-6 Sun-Sat), hour, and minute to spread load
@@ -6290,6 +6294,11 @@ vmail
 
 
         else:
+            try:
+                from plogical.cyberpanel_python import ensure_cyberpanel_bin_python_shim
+                ensure_cyberpanel_bin_python_shim()
+            except BaseException:
+                pass
             # Randomize acme.sh and renew.py cron schedules to avoid traffic spikes to Let's Encrypt
             # Each installation gets a random day (0-6 Sun-Sat), hour, and minute to spread load
             acme_hour = random.randint(0, 23)