Sunday Blog

人生是一场刻意练习

Java Redis Exception Connection Reset by Peer

Java Redis Exception Connection Reset by Peer

报错信息 2023-05-18 14:18:01.916 ERROR 109202 --- [pool-6-thread-1] o.s.s.s.TaskUtils$LoggingErrorHandler : Unexpected error occurred in scheduled task. org.springframework.data.redis.RedisSystemException: Redis exception; nested exception is io.lettuce.core.RedisException: io.netty.channel.unix.Errors$NativeIoException: readAddress(..) failed: Connection reset by peer at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:74) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:268) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.convertLettuceAccessException(LettuceSetCommands.java:520) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.lettuce.LettuceSetCommands.sMembers(LettuceSetCommands.java:245) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.connection.DefaultedRedisConnection.sMembers(DefaultedRedisConnection.java:607) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.DefaultSetOperations.lambda$members$6(DefaultSetOperations.java:158) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95) ~[spring-data-redis-2.1.10.RELEASE.jar!/:2.1.10.RELEASE] at org.springframework.data.redis.core.DefaultSetOperations.members(DefaultSetOperations.java:158)

Posted by BlueFat on Tuesday, May 23, 2023

Golang 基础知识笔记

Golang Basic Knowledge Notes

一、GO变量 1.1 变量的介绍 变量概念 变量相当于内存中的一个数据存储空间，可以将变量看做是一个房间的门牌号，通过门牌号我们可以找到房间，同样的道理

Posted by BlueFat on Saturday, May 6, 2023

ESXi 6.6 固态硬盘阵列不识别为SSD类型解决

Esxi 6 Ssd Arry Identification

ESXi开启SSH，登陆ESXI主机 # 列出储存清单 esxcli storage nmp device list # WEB界面 - 存储 - 设备 查看 naa.xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx # 设置为SSD类型 esxcli storage nmp satp rule add -s VMW_SATP_LOCAL --device naa.644a84200b26dc0023dda3c80dcac2xx --option="enable_ssd" 重启ESX

Posted by BlueFat on Friday, March 24, 2023

Dell R620 R630 R720 R730 通过IPMI手动控制服务器风扇转速

Dell Server Ipmi Fan Offset

测试IPMI的连接性： ipmitool -I lanplus -H 192.168.1.149 -U root -P root raw 将风扇设置为手动调节转速 ipmitool -I lanplus -H 192.168.1.149 -U root -P root-passwd raw 0x30 0x30 0x01 0x00 手动设置风扇转速（最后一字节指示风扇转速的百分

Posted by BlueFat on Thursday, March 23, 2023

Ubuntu 20.04 Netplan Dns

Ubuntu 20.04 Netplan Dns

如果在netplan设置dns了，但是实际验证中发现无效。 例如通过nslookup去解析域名，显示的是 dns服务器是127.0.0.53 但是

Posted by BlueFat on Thursday, March 23, 2023

Ubuntu UFW防火墙启用NAT共享上网

Ufw firewall enable nat shared Internet access

内核打开转发 echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf sysctl -p ufw打开转发 cat /etc/default/ufw | grep FORWARD DEFAULT_FORWARD_POLICY="ACCEPT" ufw规则配置 cat /etc/ufw/before.rules # # rules.before # # Rules that should be run before the ufw command line added rules. Custom # rules should be added to one of these chains: # ufw-before-input # ufw-before-output # ufw-before-forward

Posted by BlueFat on Thursday, March 23, 2023

sed引用变量及追加文件内容到文件首部

Sed Head File

只能将昨天的日志文件内容追加到今天的日志文件的首部，从第 1 行后开始，而不是完全从第 1 行开始。 # 表示将 yesterday.log 文件中的内容添加到 today 文件中，且从第一行

Posted by BlueFat on Friday, December 23, 2022

Namespace Terminating

Namespace Terminating

问题 删除 namespace 失败，一直处于 terminating 状态。 [root@ha ~]# kubectl get ns NAME STATUS AGE default Active 4d kube-system Active 4d local Active 3d6h monitoring Terminating 19m 排查 检查该 namespace 中是否还存在未被清理的资源 namespace=monitoring kubectl api-resources --verbs=list --namespaced -o name | xargs -n 1 kubectl get --show-kind --ignore-not-found

Posted by BlueFat on Sunday, November 27, 2022

Kubernetes监控kube-prometheus使用

Kube Prometheus

kube-prometheus github 部署 git clone https://github.com/prometheus-operator/kube-prometheus.git cd kube-prometheus git checkout v0.11.0 # 切换kubernetes兼容版本 首先创建需要的命名空间和 CRDs，等待它们可用后再创建其余资源 kubectl apply --server-side -f manifests/setup kubectl wait \ --for condition=Established

Posted by BlueFat on Friday, November 25, 2022

Kubernetes EFK日志收集

Kubernetes Es Logging

上传镜像（可选） export tag=7.17.3 images=( docker.elastic.co/elasticsearch/elasticsearch:${tag} docker.elastic.co/kibana/kibana:${tag} docker.elastic.co/beats/filebeat:${tag} ) # 上传至harhar export https_proxy="192.168.10.250:7890" # 代理 for image in ${images[@]}; do skopeo copy docker://${image} docker://registry.sundayhk.com/elastic/${image#*/}; done 部署Elasticsearch helm及添加storageC

Posted by BlueFat on Wednesday, November 23, 2022

RocketMQ deleteSubscriptionGroup 不删除 consumer offset 解决

Rocketmq Delete Consumer Group

https://github.com/apache/rocketmq/issues/3660 使用下面命令，删除订阅组成功但在rocketmq-dashboard 还能看到订阅组信息，只不过会显示1970-01-01 08:00:00，

Posted by BlueFat on Tuesday, November 22, 2022

SSH 一次执行多个命令

Ssh Multiple Commands

分号 ssh User@Host 'source /etc/profile; date' 写EOF ssh User@Host /bin/bash << EOF date ls -la uptime EOF 使用脚本 echo 'date' > 1.sh ssh User@Host bash -s < 1.sh

Posted by BlueFat on Monday, November 21, 2022

Kubernetes Note

Kubernetes Note

微服务的容器服务都应该使用 StatefulSet 而不是 Deployment 使用 preStop 和 readinessProbe 保证服务平滑更新不中断 通常对于常规分布式微服务业务系统来说，StatefulSet 的顺序性保证

Posted by BlueFat on Wednesday, November 16, 2022

Kubernetes 常用命令

Kubernetes Command

# 缩容 kubectl scale -n kube-system deployment coredns --replicas=1 # 设置污点 kubectl taint node master node-role.kubernetes.io/master="":NoSchedule # 取消污点 kubectl taint node master1 node-role.kubernetes.io/master- deployment daemonset 回滚 kubectl rollout history daemonset -n kube-system fluentd-elasticsearch kubectl rollout undo --to-revision=1 daemonset -n kube-system fluentd-elasticsearch

Posted by BlueFat on Wednesday, November 16, 2022

Python多线程join( )使用

python Multithreading Join

Python多线程与多进程中join()方法的效果是相同的。 join()：在子线程完成运行之前，这个子线程的父线程将一直被阻塞。 Daemon

Posted by BlueFat on Saturday, September 3, 2022

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