Re: Percona Server For MySQL 5.7.23-24 Is Now Available
Celena Holtzberg
This error seems common, although googled discussions usually mention 'open' mode instead of 'create'. Also, I do not know in what directory the file should be created. Files with this name exist in /var/lib/mysql/ and /home/percona/data/
(Replacement Only) Refer to the MySQL or MariaDB version you located earlier. For replacing version 5.5 use the percona-server-server-5.5 package and percona-server-server-5.6 for 5.6. MariaDB 10.0 should be replaced with Percona Server 5.6.
If you receive an error regarding the PID file, the server is failing to start. As mentioned in the prerequisites, this often occurs on low RAM servers where the memory limit prevents the XtraDB buffer pool allocation. If this is not the case, check /var/log/mysqld.log for any further error messages, making sure to check that you have properly matched versions between MariaDB and Percona Server.
In case of 5.6 version, there might be a bug that involves performance_schema. which leads to a bigger RAM usage values, and also prevents percona-server from starting / installing on droplets with less than 1GB RAM.
The flexible server service is available in three SKU tiers: Burstable, General Purpose, and Business Critical. The Burstable tier is best suited for low-cost development and low concurrency workloads that don't need full-compute capacity continuously. The General Purpose and Business Critical are better suited for production workloads requiring high concurrency, scale, and predictable performance. You can build your first app on a small database for a few dollars a month, and then seamlessly adjust the scale to meet the needs of your solution. The storage scaling is online and supports storage autogrowth. Flexible Server enables you to provision additional IOPS up to 80K IOPs above the complimentary IOPS limit independent of storage. Using this feature, you can increase or decrease the number of IOPS provisioned based on your workload requirements at any time. Dynamic scalability enables your database to transparently respond to rapidly changing resource requirements. You only pay for the resources you consume.
The flexible server service is equipped with built-in performance monitoring and alerting features. All Azure metrics have a one-minute frequency, and each metric provides 30 days of history. You can configure alerts on the metrics. The service exposes host server metrics to monitor resources utilization, allows configuring slow query logs. Using these tools, you can quickly optimize your workloads, and configure your server for best performance. Azure Database for MySQL - Flexible Server allows you to visualize the slow query and audit logs data using Azure Monitor workbooks. With workbooks, you get a flexible canvas for analyzing data and creating rich visual reports within the Azure portal. Azure Database for MySQL - Flexible Server provides three available workbook templates out of the box viz Server Overview, Auditing and Query Performance Insights. Query Performance Insights workbook is designed to help you spend less time troubleshooting database performance by providing such information as:
There are multiple ways to install the PMM client on a node and register it with PMM server. The preferred method of installing the PMM client on a node and registering it with the PMM server is to use Docker. Docker images of PMM server are stored in the percona/pmm-server public repository. Note that the host requires network access and must be capable of running Docker 1.12.6 or later.
Replace the username with your MySQL username and mysql_server_ip with the IP address or hostname of the MySQL server. The -p parameter will prompt you to enter the password for the MySQL user account.
I also read here that some people are experiencing problems with installation of the mysql-server on Jammy, recommending instead to install the specific mysql-server-8.0 and mysql-server-core-8.0 packages. Not 100% sure of the truth of this, as I didn't try the mysql-server metapackage again after a full purge.
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