今天新安装一台CentOS,进行yum安装时出现以下问题提示 perl-5.16.3-294.el7_6.x86_64.r FAILED                                          http://mirror.vodien.com/centos/7.6.1810/updates/x86_64/Packages/perl-5.16.3-294.el7_6.x86_64.rpm: [Errno 12] Timeout on http://mirror.vodie…

前言: 在使用yum安装 软件时,经常出现 centos yum (28, 'Connection time-out') Trying other mirror. 或下面的那样情况imeout on http://mirrors.aliyun.com/centos/6/os/x86_64/repodata/repomd.xml: (28, 'Connection time-out') Trying other mirror. 当你用ping  网络时发现又是通的,浏览器访问链接也是通的.这就奇怪…

mysql以`systemctl start mysqld.service`的方式启动一段时间后发现突然无法启动,尝试重新启动也不能解决问题,排查问题时,先后通过`systemctl status mysqld.service`和`journalctl -xe` 命令查看问题,无所得.然后查看`/var/log/mysqld.log`发现日志内报错信息如下: 2019-02-07T00:33:21.731341Z 0 [Note] InnoDB: Initializing buffer pool…

今天碰到一个大坑,差点要了老命! 之前装了ubuntu双系统,后来崩溃,想在就想装VMware虚拟机,再装ubuntu,一切进展顺利,直到在虚拟机的ubuntu中安装IDEA时出现了问题. 安装过程并没有报错,但是启动后运行一个项目,项目还没加载呢就直接退出,生成个错误日志,如下: OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000f5a9b000, 66166784, 0) failed; error='无法…

最近发现mysql总是无故退出,(vim /var/log/mysqld.log)查看日志报下面错误: InnoDB: mmap(68681728 bytes) failed; errno 12 开启swap解决,没办法机器内存太小 sudo dd if=/dev/zero of=/swapfile bs=1M count=1024 sudo mkswap /swapfile sudo swapon /swapfile…

启动项目报错 Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000fa980000, 59244544, 0) failed; error='Cannot allocate memory' (errno=12) # There is insufficient memory for the Java Runtime Environment to continue. # Native memory…

训练DQN,报错:OSError: [Errno 12] Cannot allocate memory 问题介绍: 这两天在做强化学习的作业,使用 DQN 打 Atari 游戏,但在训练过程中,出现了题目中描述的错误. 解决方案: 参考链接( https://github.com/openai/gym/issues/110 ) (1)涉及知识:linux 的 overcommit_memory.overcommit_ratio overcommit_memory 是内核对内存分配的一种策略. v…

使用docker 安装kafka时启动失败 查看报错日志 # docker logs --since 30m 71846a96e514 Excluding KAFKA_HOME from broker config [Configuring] 'port' in '/opt/kafka/config/server.properties' [Configuring] 'advertised.listeners' in '/opt/kafka/config/server.properties' [C…

一.启动kafka broker时异常 nohup /mnt/sata1/kafka_2.11-0.10.0.1/bin/kafka-server-start.sh /mnt/sata1/kafka_2.11-0.10.0.1/config/server.properties & 异常: Java HotSpot(TM) 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000c0000000, 1073741824, 0) fai…

[root@localhost yum]# yum update Loaded plugins: fastestmirror, refresh-packagekit, security Repository base is listed more than once in the configuration Repository updates is listed more than once in the configuration Repository extras is listed mo…