Percona XtraDB operator with single node detects itself as peer
Percona Community Forum » MySQL & MariaDB
by Joshua_Sierles
2d ago
Hello, I’m looking into the Percona XtraDB k8s Operator bootstrap behavior when running a single node. When booting a single node, it immediately goes into ‘crash mode’. In theory, a first time single node should not setup replication, and should bootstrap, correct? In the pxc node entrypoint, this section always runs, and the node detects itself as a peer, which switches on replication. This sets CLUSTER_JOIN, which instructs the node not to bootstrap here. Perhaps I’m misunderstanding something. Thanks. 2 posts - 2 participants Read full topic ..read more
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I am attempting to backup my MySQL server running MariaDB 10.6.18 using Percona
Percona Community Forum » MySQL & MariaDB
by hong
3d ago
I am attempting to backup my MySQL server running MariaDB 10.6.18 using Percona XtraBackup. However, during the backup process, I encounter the following error: 2024-07-09T17:39:44.067790+09:00 0 [ERROR] [MY-011825] [Xtrabackup] Unsupported server version: ‘10.6.18-MariaDB-0ubuntu0.22.04.1’ 2024-07-09T17:39:44.067802+09:00 0 [ERROR] [MY-011825] [Xtrabackup] This version of Percona XtraBackup can only perform backups and restores against MySQL 8.0 and Percona Server 8.0 2024-07-09T17:39:44.067810+09:00 0 [Note] [MY-011825] [Xtrabackup] Please use Percona XtraBackup 2.4 for this database. I am c ..read more
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SST synchronization failed
Percona Community Forum » MySQL & MariaDB
by Eryk_Michalik
4d ago
In the production environment, one node in the cluster failed. After several attempts to restart it, we couldn’t restore it to operation. Finally, a full synchronization of the node had to be performed. Currently, we have synchronization configured with only one specific node. The data transfer itself ends successfully on both the donor and joiner sides: joiner: 2024-07-09T10:39:53.743907Z 0 [Note] WSREP: Created page /var/lib/mysql/gcache.page.000027 of size 134217728 bytes 2024-07-09T10:40:51.295875Z 0 [Note] WSREP: 0.0 (host.donor): State transfer to 2.0 (host.joiner) complete. donor: 2024 ..read more
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PXC 8.0.36-28-1 with caching_sha2_password and different hash
Percona Community Forum » MySQL & MariaDB
by shigaev.s
4d ago
There is a cluster 8.0.36-28.1 of 3 nodes. By default, the caching_sha2_password plugin is there. The problem is that when creating a new user, each node has its own password hash. What it looks like: create a user on 1 node: CREATE USER 'sha2user'@'%' IDENTIFIED BY 'qwerty'; check the hash on each node: 1 node: mysql> select user,host,plugin,authentication_string from mysql.user where user = 'sha2user'; +----------+------+-----------------------+------------------------------------------------------------------------+ | user | host | plugin | authentication_string ..read more
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Proper way to perform schema upgrade when node1 is master, node2 started with bootstrap service - MySQL 8
Percona Community Forum » MySQL & MariaDB
by steve.original
4d ago
In the last application upgrade, we learned the hard way that the best approach for executing ALTER queries (schema upgrades) is to shut down the two replication nodes, perform the ALTER query on the master node, then sequentially restart and sync the replication nodes. This method has proven effective. Currently, I have a new application upgrade that includes a schema change, and I need to clarify the best approach for performing this upgrade. The current setup is as follows: Node1 (master) started with systemctl start mysql Node2 (replication node) was previously started with mysql@bootstra ..read more
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MySQL Memory is too high
Percona Community Forum » MySQL & MariaDB
by yunhyeonglee
4d ago
I’m using the DELETE script periodically in MYSQL. The problem is that during the DELETE operation, the memory in the DB is going up and the memory usage keeps going up. Already, the Innodb Buffer pool usage is 99%. What’s the reason? Or is there something I should look for? 1 post - 1 participant Read full topic ..read more
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Using xtrabckup in k8s
Percona Community Forum » MySQL & MariaDB
by Charly_Wu
4d ago
Hi, I would like to setup mysql and pxb running in k8s. the pxb should be running based on a schedule, e.g. daily, hourly, etc. FYI, the k8s cluster is configured with pod security admission. 2 posts - 2 participants Read full topic ..read more
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Buggy QAN page on PMM
Percona Community Forum » MySQL & MariaDB
by Aneel_Ahmad
6d ago
Hi, I have requirement to add a node with custom node name. I executed the following commands: sudo pmm-admin config --server-insecure-tls --server-url=‘https://mypmm:443’ 10.10.10.1 generic Staging[1] sudo pmm-admin add mysql Staging1 --query-source=perfschema --username=pmm --password=my_passwrd But when I check node name from QAN page to see result of this nodes it gives me message: " No queries available for this combination of filters in the selected time frame" However, after refreshing page if I check results with service name it works fine. Could you please help me to understand what c ..read more
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Corrupted myisam (system database) tables after backup. How to avoid?
Percona Community Forum » MySQL & MariaDB
by Deniska80
6d ago
Hello, we use xtrabackup 2.4.29 with Percona mysql servers 5.7.44 to distribute copy from master server to replicas. Often enought after restore base on replica we found error messages, about one or another table in mysql database are corrupted - sometimes it’s proc, sometimes users. By the way, all work’s good, but i just can’t do REPAIR table on replicas, coz they run in super_readonly mode. Is it normal behavior of xtrabackup and myisam engine tables, or do we something wrong? Thanks a lot. 1 post - 1 participant Read full topic ..read more
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MySQL 8.0.37 with 2 Replicas, one with replica lag, the other isn't
Percona Community Forum » MySQL & MariaDB
by CRBML
1w ago
Sorry this forum must be full of this. But I have been struggling with this for a long time now. I have one primary instance with 2 replicas, and one is having delay every morning when the load is heavy. The Data is a mix of InnoDB and MyISAM tables each on separated disks Here are the config files (of both replicas) slave_preserve_commit_order=off slave_parallel_type=DATABASE binlog_format = MIXED sync_binlog = 0 max_allowed_packet = 128M thread_stack = 192K thread_cache_size = 8 table_definition_cache = 8192 table_open_cache = 1500 open_files_limit ..read more
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