Skip to main content
Advanced Search
Search Terms
Content Type

Exact Matches
Tag Searches
Date Options
Updated after
Updated before
Created after
Created before

Search Results

240 total results found

openGauss

PostgreSQL

Official skopeo copy \ --all \ docker://opengauss/opengauss:5.0.0 \ docker://registry.example.com/opengauss/opengauss:5.0.0 docker run -d \ --name opengauss \ -e GS_PASSWORD=foo \ -p 5492:5432 \ registry.example.com/opengauss/opengauss:5.0.0 ...

opengauss
postgresql
database

Recovery Mode

PostgreSQL Troubleshooting

Error the database system is in recovery mode Sit Env Host: 192.168.80.9 psql -h apple-pgsql.db.example.com -p 5433 -U postgres Trouble Shooting Check recovery state. SELECT pg_is_in_recovery(); Use ps to get process running command. ps aux | grep pgsq...

recovery
postgresql
database

WAL & Archive Mode

PostgreSQL Troubleshooting

Problem Set wal_keep_size Set archive_mode=on Unset archive_command This will cause wal_keep_size to not work and the disk to fill up. wal_keep_size Controls the minimum number of WAL files that PostgreSQL will retain, even if they have been used by strea...

archive-mode
wal
postgresql
database

Split Brain

Redis Sentinel

status
todo
sentinel
database

Architecture

TiDB Manual

graph TD subgraph Client A[Application] -->|SQL Query| B[TiDB Server] end subgraph TiDB Cluster B -->|Metadata Management| C[PD Server] B -->|Read/Write KV| D[TiKV Cluster] end subgraph TiKV Cluster D1[TiKV...

arch
tidb
database

TiKV Disk Full

TiDB Troubleshooting

Errors ERROR 1105 (HY000): tikv disk full Get Process Info ps aux | grep tikv tidb 26560 42.8 4.8 10024340 6404508 ? Ssl 15:18 13:18 bin/tikv-server --addr 0.0.0.0:21163 --advertise-addr 192.168.48.90:21163 --status-addr 0.0.0.0:21183 --advertise...

tikv
tidb
database
disk
troubleshooting

Peer Dependencies

Dependencies

The --legacy-peer-deps flag in npm is used to ignore peer dependency conflicts during installation. It essentially tells npm to use the older (pre-npm v7) behavior when resolving dependencies. What are Peer Dependencies? peerDependencies are packages that a m...

dependencies
peer
npm
frontend

React Form Item

React Troubleshooting

问题根源 在原代码中,Form.Item 的子组件是 Space,而不是直接的 Select。这导致 Form.Item 无法正确地将表单数据传递给 Select 组件。 <Form.Item> <Space> <Select /> <Button /> </Space> </Form.Item> 修复方法 将 Select 组件直接作为 Form.Item 的子组件,而不再嵌套在 Space 中 将删除按钮,改为单独的 Button 组件并放在 Form.I...

form
react
frontend

React Tutorial

React

https://www.youtube.com/watch?v=SqcY0GlETPk Vite Vite (French word for "quick", pronounced /vit/, like "veet") is a new breed of frontend build tooling that significantly improves the frontend development experience. File Structure ├── public/ ...

frontend
tutorial
react

Basic

Ansible Manual

Flow Load ansible.cfg. Load inventory from ansible.cfg. Exec biz yaml config file. Load var file from biz config file. Exec role main.yaml Module Debug - name: debug debug: msg: "命名空间:{{ monitor_namespace }},域名: {{ monitor_domain }}" Ensure Director...

quick-start
ansible
middleware

Serve From Sub Path

Grafana Configuration

Document Example [server] domain = tomato-monitor.example.com root_url = %(protocol)s://%(domain)s/grafana/ serve_from_sub_path = true

config
grafana
middleware

Installation

Grafana Troubleshooting

K8s 1.18.3 Chart: grafana-8.6.4.tgz Image: 11.4.0 seccompProfile is not support on k8s 1.18.3: Error: unable to build kubernetes objects from release manifest: error validating "": error validating data: ValidationError(Deployment.spec.template.spec.contain...

troubleshooting
installation
grafana
middleware

Label Values Not Work

Grafana Troubleshooting

Grafana v11 Background Filter(exported_namespace) is not work with old prometheus in grafana 11. label_values(kube_pod_info{exported_namespace="$namespace"},exported_pod) INFOHello, and thank you for letting us know! Please see this change in Grafana v11. We...

troubleshooting
namespace
grafana
middleware

Migrate Issue

Grafana Troubleshooting

MySQL 监控 - MySQL 查询数 没有图表 - MySQL Temporary Objects 没有图表 - MySQL 查询类型(范围/全表) 没有图表 需要设置 interval 变量为 auto,不能为 1s。 表格 Value 字段改名 Grafana 11 表格的 Value 字段改名为指标的名字,需要在 Transformations 里面修改。 Add Series to Rows Merge series/tables 检查所有纵坐标的单位 Standard options...

grafana
troubleshooting
migration
middleware

Install Kafka on K8s 1.18.3

Kafka Deployment

Environment k8s: 1.18.3 Chart: bitnami/kafka:25.3.5 Image: kafka:3.5.1-debian-11-r44 Helm Chart helm search repo bitnami/kafka --versions helm pull bitnami/kafka --version 25.3.5 Disable Zookeeper kraft: ## @param kraft.enabled Switch to enable or dis...

installation
kafka
middleware

KRaft

Kafka Manual

status
todo
kraft
kafka
middleware

NodePort Access

Kafka Manual

Listerners 不区分外部和内部网络,只有一个监听端口(PLAINTEXT://:9092),Kafka 内部通信(broker 与 broker)和外部客户端(本地、测试工具等)都走这个端口。 listeners=PLAINTEXT://:9092 advertised.listeners=PLAINTEXT://123.123.123.123:31092 listener.security.protocol.map=PLAINTEXT:PLAINTEXT 区分多个类型 listeners=CLIENT...

middleware
status
todo
nodeport
kafka

JMX: Port Already in Use

Kafka Troubleshooting

Error: JMX connector server communication error: service:jmx:rmi://kafka-broker-0:5555 jdk.internal.agent.AgentConfigurationError: java.rmi.server.ExportException: Port already in use: 5555; nested exception is: java.net.BindException: Address already ...

troubleshooting
port
jmx
kafka
middleware

Leader Not Available

Kafka Troubleshooting

Leader Parition Error [Producer ] Could not connect to leader for partition CodeWallEEvent/1: Kafka::LeaderNotAvailable Describe Topic Stat kafka-topics.sh --bootstrap-server localhost:9092 --describe --topic CodeWallEEvent Topic: CodeWallEEvent TopicId:...

middleware
troubleshooting
partition
leader
kafka

Topic Not Present

Kafka Troubleshooting

Errors Source[open-telemetry-trace-id:,span-id:] 2025-03-31 17:01:32.553 ERROR 7 --- [at-handler-2591] o.s.k.support.LoggingProducerListener : Exception thrown when sending a message with key='null' and payload='{"notifyRole":"user","internal":{"isHtml":fa...

troubleshooting
topic
kafka
middleware