Ich versuche, alle meine Datenbanken zu sichern, aber es wird der Fehler„Verbindung zum MySQL-Server während der Abfrage beim Dumpen der Tabelle verloren“und die Datei erreicht immer 781 M.
Ich habe versucht,max_allowed_packet = 512Munten[mysqld]und darunter[mysqldump]bei/etc/mysql/meine.cnf, aber es hat nicht funktioniert. Ich habe auch versucht, es auf 1024 M einzustellen. Nichts.
Ich glaube, das liegt daran, dass Apache fast meinen gesamten RAM nutzt, aber ich bin mir nicht so sicher, da mein Dump immer stoppt, wenn die Datei 781 MB groß ist.
/etc/mysql/my.cnf:
#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
log_error=/var/log/mysql/mysql_error.log
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-external-locking
log_error=/var/log/mysql/mysql_error.log
max_allowed_packet = 512M
# Replic
server-id=2
master-host=hostip
master-user=slaveusr
master-password=slavepass
master-port=3306
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 0.0.0.0
#
# * Fine Tuning
#
key_buffer = 16M
thread_stack = 192K
thread_cache_size = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover = BACKUP
#max_connections = 100
#table_cache = 64
#thread_concurrency = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
#
# Error logging goes to syslog due to
/etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# Here you can see queries with especially long duration
#log_slow_queries = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1
#log_bin = /var/log/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
[mysqldump]
quick
quote-names
max_allowed_packet = 512M
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
key_buffer = 16M
#
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/
Ich habe es versuchtmysqlcheck -A --auto-repairauch, aber ich bekam dc nach einer Weile (mehr als beim Laufenmysqldump).
Irgendwelche Ideen?
BEARBEITEN:
Beim Versuch, eine bestimmte Tabelle „bandeira“ zu dumpen, geht die Verbindung verloren:
2073 Query SET SESSION character_set_results = 'binary'
2073 Query use `ct1222`
2073 Query select @@collation_database
2073 Query SHOW TRIGGERS LIKE 'baixa\_prod'
2073 Query SET SESSION character_set_results = 'utf8'
2073 Query show table status like 'bandeira'
2073 Query SET OPTION SQL_QUOTE_SHOW_CREATE=1
2073 Query SET SESSION character_set_results = 'binary'
2073 Query show create table `bandeira`
2073 Query SET SESSION character_set_results = 'utf8'
2073 Query show fields from `bandeira`
2073 Query SELECT /*!40001 SQL_NO_CACHE */ * FROM `bandeira`
Ich rannteMySQL-Prüfungund es heißt, es ist ok:
# mysqlcheck ct1222 bandeira
ct1222.bandeira OK
mysql_error.log:
InnoDB: Error: tried to read 16384 bytes at offset 0 7290880.
InnoDB: Was only able to read -1.
180829 17:49:36 InnoDB: Operating system error number 5 in a file operation.
InnoDB: Error number 5 means 'Input/output error'.
InnoDB: Some operating system error numbers are described at
InnoDB: http://dev.mysql.com/doc/refman/5.1/en/operating-system-error-codes.html
InnoDB: File operation call: 'read'.
InnoDB: Cannot continue operation.
180829 17:49:38 mysqld_safe Number of processes running now: 0
180829 17:49:38 mysqld_safe mysqld restarted
180829 17:49:38 [Warning] 'for replication startup options' is deprecated and will be removed in a future release. Please use ''CHANGE MASTER'' instead.
180829 17:49:38 [Note] Plugin 'FEDERATED' is disabled.
180829 17:49:38 InnoDB: Initializing buffer pool, size = 8.0M
180829 17:49:38 InnoDB: Completed initialization of buffer pool
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
180829 17:49:38 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
180829 17:49:41 InnoDB: Started; log sequence number
Antwort1
Sie scheinen ein Hardwareproblem zu haben.
Genauer gesagt scheint es sich um eine fehlerhafte Festplatte zu handeln. Als InnoDB versuchte, eine Seite von der Festplatte zu lesen, konnte es dies aufgrund eines nicht behebbaren E/A-Fehlers nicht tun. Dies ist fatal, sodass der Server tatsächlich anhält oder abstürzt, weshalb die Verbindung verloren geht.
Alles was danach kommt mysqld_safe Number of processes running now: 0ist ein Neustart von MySQL und die Behebung des Fehlers.der tatsächliche Fehler liegt über dieser Linie(Mit anderen Worten: Lassen Sie sich durch das Folgende nicht beunruhigen oder ablenken.)
Ich vermute, dass Sie keine Backups haben, da beim Erstellen von Backups derselbe Fehler aufgetreten wäre.
Dies scheint jedoch kein „MySQL-Problem“ an sich zu sein. Sie sollten feststellen, dass Sie MySQL-Dateien auch nicht auf eine andere Festplatte kopieren können, da beim Kopieren der betroffenen Datei derselbe Fehler auftritt. Welche Datei es ist, hängt von der Einstellung von ab innodb_file_per_table. Wenn auf eingestellt ist 0, wird die Wiederherstellung umso komplizierter.