Scaling a Multi-Tenant k8s Cluster in a Telco Pablo Moncada October 28, 2020 About MasMovil group ● 4th telecom company in Spain ● Provides voice and broadband services to +12M customers ● Several Services +3k CPU +2k Mem +5TB Nodes +300 kube-proxy replacement NetworkPolicy logging Multi-cluster DNS Aware NetworkPolicy Increased Istio security External Services TLS visibility Performance

PolarDB-X 如 何 做 生 态兼 容 好的 MySQL 兼容性可以做到什么程度 胡中泉（舟济） 阿里云数据库解决方案架构师为什么要兼容 MySQL 01 The longer you look back, the farther you can look forward.也从阿里巴巴的“去IOE”运动说起 业务驱动下的分布式技术实践之路 5月17日，支付宝最后一台小型 机下线标志去IOE落下帷幕 反推出了天价账单也谈所谓的“中间件” 中间件只是起点，PolarDB-X 可能是离终点最近的那个 对近十年的探索以及五年的上云 经验进行重新思考，面向未来设 从运维视角实现计算存储一体化 计新架构 产品形态 基于MySQL XA实现分布式事务 基于外部组件进行扩容 支持扩容 分布式事务 一体化尝试 Review 2.0 开源 2016 2017 2018 2019 2020 2021 2021年10月20日，云栖大会宣 it probably is a duck.业务系统 上游 Single Source of Truth 问题背景 数据孤岛怎么办？ 下游MySQL 怎么做 Binlog Maxwell DebeziumPolarDB-X 完全兼容 MySQL Binlog 可行性 • 多节点产生多个增量事件队列 • 不同队列中事件之间的顺序 • 分布式事务完整性 • DDL 引起的多 Schema

indexes in Zabbix MySQL database schema ** Redundant indexes were removed in several Zabbix MySQL database tables. This should improve performance and slightly reduce the database size for MySQL users in these on child-table columns having foreign key constraints Such indexes were created automatically on MySQL, now they are created also on PostgreSQL, Oracle, DB2 to improve performance of Zabbix server and be set to 0.0001 seconds. 18.3 Miscellaneous improvements Fixed issues with mysql user parameter configuration script mysql.size parameter. It con- tained a complex bash expression and was failing if

will be set to 0.0001 seconds. 3 Miscellaneous improvements Fixed issues with mysql user parameter configuration script mysql.size parameter. It contained a complex bash expression and was failing if the line parameters: • printing all built-in agent items with values • testing a user parameter with ”mysql.ping” key defined in the specified configuration file • installing a ”Zabbix Agent” service for Windows it by Hostname value from the config file shell> zabbix_agentd --print shell> zabbix_agentd -t "mysql.ping" -c /etc/zabbix/zabbix_agentd.conf shell> zabbix_agentd.exe -i shell> zabbix_agentd.exe -i -m

line parameters: • printing all built-in agent items with values • testing a user parameter with ”mysql.ping” key defined in the specified configuration file • installing a ”Zabbix Agent” service for Windows it by Hostname value from the config file shell> zabbix_agentd --print shell> zabbix_agentd -t "mysql.ping" -c /etc/zabbix/zabbix_agentd.conf shell> zabbix_agentd.exe -i shell> zabbix_agentd.exe -i -m requires a separate database. Attention: Note that databases supported with Zabbix proxy are SQLite, MySQL and PostgreSQL. Using Oracle or IBM DB2 is at your own risk and may contain some limitations as,

line parameters: • printing all built-in agent items with values • testing a user parameter with ”mysql.ping” key defined in the specified configuration file • installing a ”Zabbix Agent” service for Windows it by Hostname value from the config file shell> zabbix_agentd --print shell> zabbix_agentd -t "mysql.ping" -c /etc/zabbix/zabbix_agentd.conf shell> zabbix_agentd.exe -i shell> zabbix_agentd.exe -i -m requires a separate database. Attention: Note that databases supported with Zabbix proxy are SQLite, MySQL and PostgreSQL. Using Oracle or IBM DB2 is at your own risk and may contain some limitations as,

Parameter structure for Zabbix agent 2 plugins has been updated: • For Ceph, Docker, Memcached, MySQL, Oracle, and Redis plugins, a Uri can now only be specified as a named session parameter. • For SharePont Microsoft SharePoint by HTTP - see setup instructions for HTTP templates. MongoDB • MongoDB cluster by Zabbix agent 2 • MongoDB node by Zabbix agent 2 See setup instructions for Zabbix agent 2 templates monitoring of TiDB server of TiDB cluster via HTTP; • TiDB PD by HTTP - monitoring of PD server of TiDB cluster via HTTP; • TiDB TiKV by HTTP - monitor TiKV server of TiDB cluster via HTTP. See setup instructions

item, referencing the current host sum(last_foreach(/*/vfs.fs.size[/,total]?[group=”MySQL Servers”])) grpsum[”MySQL Servers”,”vfs.fs.size[/,total]”,last] Aggregate calculation (formerly, aggregate performance. Starting from Zabbix 5.4, the following database versions are officially supported: • MySQL/Percona 5.7.28-8.0.X • MariaDB 10.0.37-10.5.X • PostgreSQL 10.9-13.X • Oracle 12.1.0.2 - 19c • setupfor more information. Items VMware cluster performance counters A new vmware.cl.perfcounter[,,,] item allows to retrieve VMware cluster performance counter metrics. JMX items

line parameters: • printing all built-in agent items with values • testing a user parameter with ”mysql.ping” key defined in the specified configuration file • installing a ”Zabbix Agent” service for Windows it by Hostname value from the config file shell> zabbix_agentd --print shell> zabbix_agentd -t "mysql.ping" -c /etc/zabbix/zabbix_agentd.conf shell> zabbix_agentd.exe -i shell> zabbix_agentd.exe -i -m requires a separate database. Attention: Note that databases supported with Zabbix proxy are SQLite, MySQL and PostgreSQL. Using Oracle or IBM DB2 is at your own risk and may contain some limitations as,

• remove host • enable host • remove from host group • unlink from template MySQL 8.0 supported Support for MySQL 8.0 has been added. Date-based indices setup for Elasticsearch In order to properly about the oc- curred problem. Database down message from now on consists of the following content: [MySQL|PostgreSQL|Oracle|IBM DB2] database [on :] is not available: MySQL. Internal events can be disabled Internal events will not be created, if all internal actions for