Bug #27557952 IMPROVE LOGGING DURING --INITIALIZE

  There are several problems here:
  a) There is indication that this is a normal startup and not
     --initialize mode
  b) Message about self signed ca.pem is spam in this context.
  c) There is no shutdown message present, user don't know when
     initialize progress is done.

  Solution:
  a) Changed the startup message to indicate that this is
     --initialize mode
  b) Supressed message about self signed ca.pem when in
     --initialize mode.
  c) Added a shutdown message so that users know when the
     initialize progress is done.

mysql-test/r/basedir.result

@@ -25,6 +25,7 @@
 # Try using -D with relative path
 # Look for [ERROR] in error log (there should be none):
 # Look for output (there should be none):
+# Supressing output for initialize:
 #
 # Cleanup
 #

mysql-test/t/basedir.test

@@ -194,9 +194,12 @@ EOF
 
   open(MYSQLD_OUT, $mysqld_out) || die "Failed to open '$mysqld_out': $!";
   print "# Look for output (there should be none):\n";
+  print "# Supressing output for initialize:\n";
   while(<MYSQLD_OUT>)
   {
-    print;
+    if (!(/initializing of server has completed/)) {
+      print;
+    }
   }
   close(MYSQLD_OUT);
 EOF

share/errmsg-utf8.txt

@@ -18032,6 +18032,12 @@ ER_AUDIT_LOG_JSON_FILTER_DOES_NOT_EXIST
 ER_IB_MSG_1271
   eng "Cannot upgrade server earlier than 5.7 to 8.0"
 
+ER_STARTING_INIT
+  eng "%s (mysqld %s) initializing of server in progress as process %lu"
+
+ER_ENDING_INIT
+  eng "%s (mysqld %s) initializing of server has completed"
+
 #
 # End of 8.0 Server error messages.
 # (Please read comments from the header of this section before adding error

sql/mysqld.cc

@@ -3814,9 +3814,13 @@ int init_common_variables() {
     LogErr(INFORMATION_LEVEL, ER_BASEDIR_SET_TO, mysql_home);
   }
 
-  LogErr(SYSTEM_LEVEL, ER_STARTING_AS, my_progname, server_version,
-         (ulong)getpid());
-
+  if (opt_initialize || opt_initialize_insecure) {
+    LogErr(SYSTEM_LEVEL, ER_STARTING_INIT, my_progname, server_version,
+           (ulong)getpid());
+  } else {
+    LogErr(SYSTEM_LEVEL, ER_STARTING_AS, my_progname, server_version,
+           (ulong)getpid());
+  }
   if (opt_help && !opt_verbose) unireg_abort(MYSQLD_SUCCESS_EXIT);
 
   DBUG_PRINT("info", ("%s  Ver %s for %s on %s\n", my_progname, server_version,
@@ -4248,7 +4252,9 @@ static int warn_one(const char *file_name) {
   issuer = X509_NAME_oneline(X509_get_issuer_name(ca_cert), 0, 0);
   subject = X509_NAME_oneline(X509_get_subject_name(ca_cert), 0, 0);
 
-  if (!strcmp(issuer, subject)) {
+  /* Suppressing warning which is not relevant during initialization */
+  if (!strcmp(issuer, subject) &&
+      !(opt_initialize || opt_initialize_insecure)) {
     LogErr(WARNING_LEVEL, ER_CA_SELF_SIGNED, file_name);
   }
 
@@ -6264,6 +6270,9 @@ int mysqld_main(int argc, char **argv)
 
     int error = bootstrap::run_bootstrap_thread(
         mysql_stdin, NULL, SYSTEM_THREAD_SERVER_INITIALIZE);
+    if (error == 0) {
+      LogErr(SYSTEM_LEVEL, ER_ENDING_INIT, my_progname, server_version);
+    }
     unireg_abort(error ? MYSQLD_ABORT_EXIT : MYSQLD_SUCCESS_EXIT);
   }