Questions tagged [mysqldump]
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41 questions
1 vote
0 answers
141 views
mysqldump fails with max_allowed_packet set to highest possible value
I'm trying to take a mysqldump of a database with the following options: mysqldump --single-transaction --set-gtid-purged=OFF -uuser -ppassword -t -q --compact dbname -hdb_host > data.sql However ...
- 111
0 votes
1 answer
3k views
Mysqldump max_allowed_packet issue
I need to migrate a database that was managed by someone who left the company. The source server is MariaDB 1:10.5.5, the destination MariaDB 1:10.5.19. The existing backup scripts use the following ...
- 5
1 vote
2 answers
3k views
Cron job to backup the MySQL database produces empty dump files with no errors logged that I can find
My site is controlled via cpanel. I want to automate the backup of my databases and then automate their download to my development machine. The first step was to set up the cron jobs as follows 0 3 ...
- 946
0 votes
1 answer
287 views
mysqldump - username takes "-p" as well
I use the following script to read database credentials from a Wordpress installation: DB_NAME=$(sed -n "s/define( *'DB_NAME', *'\([^']*\)'.*/\1/p" wp-config.php) DB_USER=$(sed -n "s/...
- 123
0 votes
0 answers
37 views
How to restore sql+txt dump?
I have some dumps created with the following command: mysqldump --host=$host --user=$dbuser --password=$dbpass --tab=$backupdir/$dbname $dbname That created couple files table.sql/table.txt with the ...
- 83
1 vote
2 answers
3k views
How to downgrade mysql-client from 8.0.27 to 8.0.26 on Ubuntu
MySQL 8.0.27 has a bug when used to connect to Azure, where it uses all CPU resources and never connects. Therefore I would like to downgrade to 8.0.26 What I have tried so far: #uninstall any mysql ...
- 273
0 votes
1 answer
1k views
MySQL Dump on Ubuntu 20.04 returns 0 byte file and runs indefinitely. Works on Ubuntu 18.04
I am using identical configs on Ubuntu 20.04 as I was previously on 18.04; however, on 20.04 the CPU shoots up to 50% usage and the process runs indefinitely, and by indefinitely I mean it was running ...
- 273
1 vote
0 answers
826 views
Mysqldump really slow when dumping to network drive
I'm facing an issue when dumping a mysql database to the network drive. The thing is I'm getting really slow speeds (around 3-7mb/s). Dumping locally, the speed is fine. I've coded my own program that ...
4 votes
1 answer
6k views
How to get a local mysql dump of a specific AWS RDS Snapshot
Hello I have a linux bastion host in AWS that I am able to SSH into. In the Bastion I am able to run a mysqldump command which makes a copy of an RDS instance. What I want to accomplish is being able ...
- 143
1 vote
0 answers
169 views
slow environment with high CPU usage [closed]
I'm new to Linux metrics in our test environment we experiment a slowness, after investigation we have found that the disk space used to store backup data is full, but what is wired for me is that the ...
- 131
0 votes
2 answers
1k views
Default password in .my.cnf for a specific user
We've got a backup script which takes a mysql dump every night, and to authenticate we've got a .my.cnf file with [mysqldump] password=somepass However, every mysql user that doesn't pass in a ...
- 173
9 votes
1 answer
2k views
Used mysql command instead of mysqldump
I wanted to backup my MySQL database and I accidentally used mysql command instead of mysqldump. So I executed: /usr/local/mysql5/bin/mysql -u db_username -p db_name > db_backup.sql Instead of: /...
- 149
0 votes
0 answers
207 views
Backing up a large database using mysqldump and CRON
I'm trying to backup a single MySql Database on my website using CRON but it's not working. Command is /usr/bin/mysqldump -uUSERNAME -pPASSWORD --databases DATABASENAME | gzip > /home/MYSITE/...
- 1
1 vote
0 answers
151 views
Mysql database restore from rescue mode server
I have one server which is in rescue mode, and limited run the command even the mysqldump. I tried to restore the client database to new server by manually upload and created database but the sql ...
- 11
1 vote
2 answers
2k views
Database Restore ERROR 2013 (HY000) at line 68497: Lost connection to MySQL server during query mariadb
I have a Database of 150G - 300 Mio entries and i want to restore it (gz SQL Dump) on MariaDB 10.3 but the restore failed because the sql server gone away. I tried to raise max_allowed_packet to the ...
- 11
13 votes
2 answers
67k views
Install MySQLDump for MySQL 8.0 on Ubuntu 18.04
I am trying to install mysqldump on a Azure hosted Ubuntu VM. During the build process I attempt the following command: sudo apt-get update sudo apt-get install -y --no-install-recommends mysql-client-...
- 273
1 vote
0 answers
3k views
mysqldump: Couldn't execute 'show create table `xxx.yyy`': Table 'yyy' doesn't exist in engine (1932)
I had to redo my server (Debian 9) in Proxmox. I updated a package (libc6) and I broke the dependencies (I didn't snapshot it...). One of the affected daemons was MySQL / MariaDB, I could not make a ...
- 119
1 vote
3 answers
2k views
mysqldump using a lot of space
I have a server and the / partition is 20GB in size. Databases are stored in /mnt/mysql-data partition is 500GB in size. Now here's the problem. Whenever I run mysqldump it fills up / partition to ...
- 129
0 votes
1 answer
1k views
Solved 'ERROR 1054 Unknown column' importing into MariaDB 10.4
I recently tried to migrate a database from an old Debian 8, MariaDB 10.1 server to a new Debian 10, MariaDB 10.4 but met with this nasty error ERROR 1054 Unknown column 'pusername' in 'field list' ...
- 33
5 votes
1 answer
23k views
How to compress SQL file correctly on CentOS?
I have a database whose size is roughly 3.1 Gb according to PhpMyAdmin. I would like to dump and compress it with gzip. This is a very similar answer to what I'm trying to do: https://serverfault....
- 163
1 vote
1 answer
1k views
Errors while restoring mariadb/mysql dump in docker
I'm running mariadb in a docker container. I want to backup and restore using a sql dump. I created the database for use with wordpress, and created just one test page. I installed phpmyadmin to the ...
- 1,119
1 vote
1 answer
1k views
mysqldump extremely slow when using a private ip
I am facing a very strange issue with Mysql. I have two cloud server and they are in the same region and VPC network so the internal connection speed is quite fast. Both servers are running CentOS 7....
- 11
3 votes
2 answers
4k views
MySQL using ridiculous amount of memory to import 1-2GB SQL files
I have a MySQL server running on an Ubuntu 18.04 machine via Docker. The machine has 32 GB of RAM. I have about 300 1-2GB SQL files which need importing into a database on the server, into a single ...
- 31
6 votes
3 answers
10k views
Mysql runs out of memory during backup dumps (Docker container)
We have a container running MariaDB, and a few other small containers on the host. The Mysql container was allocated 21G of memory (out of 32G total), as well as a few other parameters, with the ...
- 61
1 vote
1 answer
1k views
Mysqldump to compressed file
Situation: 1. mysql is backuped to disk with mysqldump (~250 GB) 2. dump is compressed with bpzip2 3. dump is moved to another DC 4. disk usage again in good state Problem: Filesystem usage peaks, ...
- 21
0 votes
1 answer
198 views
MySQL restore from dump working on OSX but not Windows
I have created a dump from a CloudSQL database for local development. I can successfully run the dump file to restore the database on a computer running OSX but when trying on a colleagues computer ...
- 101
1 vote
1 answer
254 views
mysqldump piped to gzip then s3 doesn't to run out of disk space
I run the following command which all.sql.gz is greater than the amount of free space on hard drive....but somehow it completes without issue. Is it because of how the piping works? mysqldump --...
- 507
1 vote
1 answer
2k views
Output of mysqldump all-databases failed to run in MySQL 8.0 because of dropping the 'mysql' database
Problem statement mysqldump --add-drop-database --all-database creates a dump that contains .... /*!40000 DROP DATABASE IF EXISTS `mysql`*/; .... This is expected and I believe is a correct ...
- 171
0 votes
0 answers
1k views
Is mysqldump's binary portable across distributions?
I'm trying to write a backup program that works everywhere and is easy to install. My program downloads a mysqldump binary and runs it to export the database. I want to avoid requiring users of my ...
- 451
509 votes
23 answers
375k views
mysqldump throws: Unknown table 'COLUMN_STATISTICS' in information_schema (1109)
Every time I try to make a mysqldump I get the following error: $> mysqldump --single-transaction --host host -u user -p db > db.sql mysqldump: Couldn't execute 'SELECT COLUMN_NAME, ...
- 6,749
1 vote
1 answer
1k views
Export Local MySQL Table Into Remote Database
I am trying to export only some tables in a local database, into a remote database which has the same name of these tables + some other tables (I want to overwrite the remote database tables which has ...
- 203
0 votes
1 answer
1k views
MySQL Table Checksum - Before or after MySQL dump?
The company I'm currently working for has a script that runs at night that takes a MySQL dump of the production environment and imports it into the staging environment. This is a very basic setup - No ...
- 137
-3 votes
2 answers
92 views
Large MySQL Database back up ZURMO [closed]
Not sure if anyone if familiar with Zurmo. Long story short I need to back up the whole database for it. I would use PHPmyadmin but I didn't install it when I set up Ubuntu Server. I want to use ...
- 101
0 votes
1 answer
248 views
Mysqldump over SSH Fails silently with crontab
A colleague is attempting to back up a mysql database on a Windows machine from a linux machine on a schedule. The linux and windows machines use different versions of mysql, so we can't run mysqldump ...
- 123
6 votes
1 answer
9k views
mysqldump: The 'INFORMATION_SCHEMA.SESSION_VARIABLES' feature is disabled
When I try to run mysqldump on a Percona Server 5.7.17-12, I get this error: # mysqldump -u backups -pxxxx -h 127.0.0.1 --single-transaction --quick dbname mysqldump: [Warning] Using a password on ...
- 460
0 votes
1 answer
569 views
Is it safe to mysqldump a section of missing data for re-importation with my flags?
Let's say on a test database about a year's data got erased. I got the two id's for the data in one year at the earliest and the data in the other at the latest and therefore a range of what's missing ...
- 113
0 votes
1 answer
3k views
Will running mysqldump on one Percona XtraDB cluster node affect performance on the others?
I have a Percona XtraDB cluster with 3 nodes. Only one of these nodes is connected to by the application that uses the database. I would like to perform 'hot backups' simply using mysqldump on one of ...
- 133
-1 votes
1 answer
593 views
Remote Dump of MySQL user issue (behind VPN)
I'm trying to remote dump a MySQL db that is behind a VPN (I'm VPNed in): mysqldump.exe -h 10.39.23.111 -u dbuser -p remoteschema > c:\temp\mysql.sql The error message I get is: mysqldump: Got ...
- 109
0 votes
1 answer
815 views
What is best method for fixing a out of sync mysql slave when pt-online-schema-change, pt-table-sync, xtrabackup do not work?
We all know, there are several methods for syncing data from a mysql master to a slave. After reading many blogs about this issue, two common tools always come up: pt-online-schema-change pt-table-...
- 141
0 votes
3 answers
704 views
Adding mysqldump parameters in automysql
Please excuse any formatting or grammatical errors. I am currently using automysqlbackup to take local backups of my mySQL database. I recently started to having problems that is connected to that ...
- 1,474
5 votes
2 answers
29k views
Log the error and warning while restoring the sql dump on MySql
How to log the error and warning while restoring the SQL dump on MySQL ? Following are the steps we were doing. mysql> CREATE DATABASE dbname; mysql> USE dbname; mysql> SOURCE dbdumpname....
- 429