[root@localhost ~]# cd /usr/src/
[root@localhost src]# wget https://downloads.mysql.com/archives/get/p/23/file/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
--2022-07-29 13:28:14-- https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
Resolving cdn.mysql.com (cdn.mysql.com)... 23.2.84.230
Connecting to cdn.mysql.com (cdn.mysql.com)|23.2.84.230|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 674830866 (644M) [application/x-tar-gz]
Saving to: 'mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz'
mysql-5.7.38-linux-glibc2.12-x 100%[==================================================>] 643.57M 3.35MB/s in 4m 15s
2022-07-29 13:32:30 (2.52 MB/s) - 'mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz' saved [674830866/674830866]
[root@localhost src]# ls
debug kernels mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz
[root@localhost src]# useradd -M -r -s /sbin/nologin mysql
[root@localhost src]# id mysql
uid=995(mysql) gid=992(mysql) groups=992(mysql)
[root@localhost src]# tar xf mysql-5.7.38-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
[root@localhost src]# cd
[root@localhost ~]# ls /usr/local/
bin etc games include lib lib64 libexec mysql-5.7.38-linux-glibc2.12-x86_64 sbin share src
[root@localhost ~]# cd /usr/local/
[root@localhost local]# ln -sv mysql-5.7.38-linux-glibc2.12-x86_64 mysql
'mysql' -> 'mysql-5.7.38-linux-glibc2.12-x86_64'
[root@localhost local]# ll
total 0
drwxr-xr-x. 2 root root 6 Jun 22 2021 bin
drwxr-xr-x. 2 root root 6 Jun 22 2021 etc
drwxr-xr-x. 2 root root 6 Jun 22 2021 games
drwxr-xr-x. 2 root root 6 Jun 22 2021 include
drwxr-xr-x. 2 root root 6 Jun 22 2021 lib
drwxr-xr-x. 3 root root 17 Jul 12 21:45 lib64
drwxr-xr-x. 2 root root 6 Jun 22 2021 libexec
lrwxrwxrwx. 1 root root 35 Jul 29 13:39 mysql -> mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x. 9 root root 129 Jul 29 13:38 mysql-5.7.38-linux-glibc2.12-x86_64
drwxr-xr-x. 2 root root 6 Jun 22 2021 sbin
drwxr-xr-x. 5 root root 49 Jul 12 21:45 share
drwxr-xr-x. 2 root root 6 Jun 22 2021 src
//修改目录/usr/local/mysql的属主属组
[root@localhost local]# chown -R mysql.mysql mysql*
[root@localhost local]# ll /usr/local/mysql -d
lrwxrwxrwx. 1 mysql mysql 35 Jul 29 13:39 /usr/local/mysql -> mysql-5.7.38-linux-glibc2.12-x86_64
//配置环境变量
[root@localhost local]# echo 'export PATH=$PATH:/usr/local/mysql/bin' > /etc/profile.d/mysql.sh
[root@localhost local]# source /etc/profile.d/mysql.sh
[root@localhost local]# echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/usr/local/mysql/bin
//创建头文件
[root@localhost ~]# cd /usr/local/mysql
[root@localhost mysql]# ls
LICENSE README bin docs include lib man share support-files
[root@localhost mysql]# ln -sv /usr/local/mysql/include/ /usr/include/mysql //配置软链接
'/usr/include/mysql' -> '/usr/local/mysql/include/'
[root@localhost ~]# chown -R mysql.mysql /usr/include/mysql
[root@localhost ~]# ll -d /usr/include/mysql
lrwxrwxrwx. 1 mysql mysql 25 Jul 29 14:37 /usr/include/mysql -> /usr/local/mysql/include/
[root@localhost ~]# vim /etc/ld.so.conf.d/mysql.conf
/usr/local/mysql/lib/
[root@localhost ~]# ldconfig
[root@localhost ~]# vim /etc/man_db.conf
#MANDATORY_MANPATH /usr/src/pvm3/man
#
MANDATORY_MANPATH /usr/man
MANDATORY_MANPATH /usr/share/man
MANDATORY_MANPATH /usr/local/share/man
MANDATORY_MANPATH /usr/local/mysql/man //添加一行
[root@localhost ~]# mkdir -p /opt/data/{3306,3307,3308}
[root@localhost ~]# chown -R mysql.mysql /opt/data/
[root@localhost ~]# ll /opt/data/
total 0
drwxr-xr-x. 2 mysql mysql 6 Jul 29 13:45 3306
drwxr-xr-x. 2 mysql mysql 6 Jul 29 13:45 3307
drwxr-xr-x. 2 mysql mysql 6 Jul 29 13:45 3308
[root@localhost ~]# tree /opt/data/
/opt/data/
|-- 3306
|-- 3307
`-- 3308
//初始化3306
[root@localhost ~]# mysqld --initialize --user mysql --datadir /opt/data/3306
2022-07-29T05:48:04.206397Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-07-29T05:48:04.369296Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-07-29T05:48:04.403256Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-07-29T05:48:04.462960Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 03b0e61e-0f02-11ed-b4ce-000c296d5362.
2022-07-29T05:48:04.464340Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-07-29T05:48:04.643259Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-07-29T05:48:04.643284Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-07-29T05:48:04.643585Z 0 [Warning] CA certificate ca.pem is self signed.
2022-07-29T05:48:04.717924Z 1 [Note] A temporary password is generated for root@localhost: ,dASzpwwE3RJ
[root@localhost ~]# echo ',dASzpwwE3RJ' > 3306
[root@localhost ~]# ls
3306 anaconda-ks.cfg
//初始化3307
[root@localhost ~]# mysqld --initialize --user mysql --datadir /opt/data/3307
2022-07-29T05:49:29.037700Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-07-29T05:49:29.195218Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-07-29T05:49:29.224130Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-07-29T05:49:29.281903Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 363f3e1c-0f02-11ed-8fdd-000c296d5362.
2022-07-29T05:49:29.283175Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-07-29T05:49:29.523082Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-07-29T05:49:29.523118Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-07-29T05:49:29.523503Z 0 [Warning] CA certificate ca.pem is self signed.
2022-07-29T05:49:29.581009Z 1 [Note] A temporary password is generated for root@localhost: )MhldlF<o23j
[root@localhost ~]# echo ')MhldlF<o23j' > 3307
[root@localhost ~]# ls
3306 3307 anaconda-ks.cfg
//初始化3308
[root@localhost ~]# mysqld --initialize --user mysql --datadir /opt/data/3308
2022-07-29T05:50:14.735254Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2022-07-29T05:50:14.892190Z 0 [Warning] InnoDB: New log files created, LSN=45790
2022-07-29T05:50:14.915269Z 0 [Warning] InnoDB: Creating foreign key constraint system tables.
2022-07-29T05:50:14.973272Z 0 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 517b3121-0f02-11ed-a3f6-000c296d5362.
2022-07-29T05:50:14.974697Z 0 [Warning] Gtid table is not ready to be used. Table 'mysql.gtid_executed' cannot be opened.
2022-07-29T05:50:15.340479Z 0 [Warning] A deprecated TLS version TLSv1 is enabled. Please use TLSv1.2 or higher.
2022-07-29T05:50:15.340510Z 0 [Warning] A deprecated TLS version TLSv1.1 is enabled. Please use TLSv1.2 or higher.
2022-07-29T05:50:15.341068Z 0 [Warning] CA certificate ca.pem is self signed.
2022-07-29T05:50:15.368072Z 1 [Note] A temporary password is generated for root@localhost: tkdnhiEk>5vh
[root@localhost ~]# echo 'tkdnhiEk>5vh' > 3308
[root@localhost ~]# ls
3306 3307 3308 anaconda-ks.cfg
[root@localhost ~]# vim /etc/my.cnf
[root@localhost ~]# cat /etc/my.cnf
[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
[mysqld3306]
datadir = /opt/data/3306
port = 3306
socket = /tmp/mysql3306.sock
pid-file = /opt/data/3306/mysql_3306.pid
log-error=/var/log/3306.log
[mysqld3307]
datadir = /opt/data/3307
port = 3307
socket = /tmp/mysql3307.sock
pid-file = /opt/data/3307/mysql_3307.pid
log-error=/var/log/3307.log
[mysqld3308]
datadir = /opt/data/3308
port = 3308
socket = /tmp/mysql3308.sock
pid-file = /opt/data/3308/mysql_3308.pid
log-error=/var/log/3308.log
[root@localhost ~]# mysqld_multi start 3306
-bash: /usr/local/mysql/bin/mysqld_multi: /usr/bin/perl: bad interpreter: No such file or directory //需要下载perl包
[root@localhost ~]# dnf -y install perl
[root@localhost mysql]# yum install ncurses-compat-libs
[root@localhost mysql]# file /usr/local/mysql/bin/mysqld_multi
/usr/local/mysql/bin/mysqld_multi: Perl script text executable
[root@localhost ~]# mysqld_multi start 3306
[root@localhost ~]# mysqld_multi start 3307
[root@localhost ~]# mysqld_multi start 3308
[root@localhost ~]# ss -anlt
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 80 *:3308 *:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 80 *:3306 *:*
LISTEN 0 80 *:3307 *:*
//需要先把mysql服务停止 //mysqld_mulit 命令停止不了只能杀进程
[root@localhost ~]# ps -ef | grep 3306 | grep -v grep
root 77016 1 0 13:55 pts/0 00:00:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/opt/data/3306 --port=3306 --socket=/tmp/mysql3306.sock --pid-file=/opt/data/3306/mysql_3306.pid --log-error=/var/log/3306.log
mysql 77152 77016 0 13:55 pts/0 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/opt/data/3306 --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/log/3306.log --pid-file=/opt/data/3306/mysql_3306.pid --socket=/tmp/mysql3306.sock --port=3306
[root@localhost ~]# ps -ef | grep 3306 | grep -v grep | awk '{print$2}'
77016
77152
[root@localhost ~]# ps -ef | grep 3306 | grep -v grep | awk '{print$2}' | xargs kill -9
[root@localhost ~]# ss -anlt
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 80 *:3308 *:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 80 *:3307 *:*
[root@localhost ~]# ps -ef | grep 3307 | grep -v grep | awk '{print$2}' | xargs kill -9
[root@localhost ~]# ss -anlt
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 80 *:3308 *:*
LISTEN 0 128 [::]:22 [::]:*
[root@localhost ~]# ps -ef | grep 3308 | grep -v grep | awk '{print$2}' | xargs kill -9
[root@localhost ~]# ss -anlt
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 128 [::]:22 [::]:*
//找个一个系统默认可以使用system控制的配置文件进行cp一下，并进行修改
[root@localhost ~]# cp /usr/lib/systemd/system/sshd.service /usr/lib/systemd/system/3306.service
//配置3306
[root@localhost ~]# vim /usr/lib/systemd/system/3306.service
[Unit]
Description=3306 server daemon
After=network.target sshd-keygen.target
[Service]
Type=forking
ExecStart=/usr/local/mysql/bin/mysqld_multi start 3306
ExecStop=ps -ef | grep 3306 | grep -v grep | awk '{print$2}' | xargs kill -9
ExecReload=/bin/kill -HUP $MAINPID
[Install]
WantedBy=multi-user.target
//配置3307
[root@localhost ~]# cp /usr/lib/systemd/system/3306.service /usr/lib/systemd/system/3307.service
[root@localhost ~]# vim /usr/lib/systemd/system/3307.service //使用:% s/6/7/g一键替换
[Unit]
Description=3307 server daemon
After=network.target sshd-keygen.target
[Service]
Type=forking
ExecStart=/usr/local/mysql/bin/mysqld_multi start 3307
ExecStop=ps -ef | grep 3307 | grep -v grep | awk '{print$2}' | xargs kill -9
ExecReload=/bin/kill -HUP $MAINPID
[Install]
WantedBy=multi-user.target
//配置3308
[root@localhost ~]# cp /usr/lib/systemd/system/3306.service /usr/lib/systemd/system/3308.service
[root@localhost ~]# vim /usr/lib/systemd/system/3308.service //使用:% s/6/7/g一键替换
[Unit]
Description=3308 server daemon
After=network.target sshd-keygen.target
[Service]
Type=forking
ExecStart=/usr/local/mysql/bin/mysqld_multi start 3308
ExecStop=ps -ef | grep 3308 | grep -v grep | awk '{print$2}' | xargs kill -9
ExecReload=/bin/kill -HUP $MAINPID
[Install]
WantedBy=multi-user.target
//刷新一下
[root@localhost ~]# systemctl daemon-reload
//关闭防火墙和selinux
[root@localhost ~]# systemctl stop firewalld
[root@localhost ~]# systemctl disable firewalld
Removed /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@localhost ~]# setenforce 0
[root@localhost ~]# vim /etc/selinux/config
SELINUX=disabled
//启动3306，3307，3308
[root@localhost ~]# systemctl start 3306
Job for 3306.service failed because the control process exited with error code.
See "systemctl status 3306.service" and "journalctl -xe" for details. //没有找到my_print_defaults这个文件
//创建一个软链接到/usr/bin下
[root@localhost ~]# ln -s /usr/local/mysql/bin/my_print_defaults /usr/bin/my_print_defaults
[root@localhost ~]# systemctl start 3306
[root@localhost ~]# systemctl start 3307
[root@localhost ~]# systemctl start 3308
[root@localhost ~]# ss -anlt
State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 80 *:3308 *:*
LISTEN 0 128 [::]:22 [::]:*
LISTEN 0 80 *:3306 *:*
LISTEN 0 80 *:3307 *:*
//3306
[root@localhost ~]# mysql -uroot -p',dASzpwwE3RJ' -S /tmp/mysql3306.sock
mysql> set password = password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
//3307
[root@localhost ~]# mysql -uroot -p')MhldlF<o23j' -S /tmp/mysql3307.sock
mysql> set password = password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
//3308
[root@localhost ~]# mysql -uroot -p'tkdnhiEk>5vh' -S /tmp/mysql3308.sock
mysql> set password = password('123456');
Query OK, 0 rows affected, 1 warning (0.00 sec)
我正在查看instance_variable_set的文档并看到给出的示例代码是这样做的:obj.instance_variable_set(:@instnc_var,"valuefortheinstancevariable")然后允许您在类的任何实例方法中以@instnc_var的形式访问该变量。我想知道为什么在@instnc_var之前需要一个冒号:。冒号有什么作用？ 最佳答案 我的第一直觉是告诉你不要使用instance_variable_set除非你真的知道你用它做什么。它本质上是一种元编程工具或绕过实例变量可见性的黑客攻击
在我的应用程序中，我需要能够找到所有数字子字符串，然后扫描每个子字符串，找到第一个匹配范围(例如5到15之间)的子字符串，并将该实例替换为另一个字符串“X”。我的测试字符串s="1foo100bar10gee1"我的初始模式是1个或多个数字的任何字符串，例如，re=Regexp.new(/\d+/)matches=s.scan(re)给出["1","100","10","1"]如果我想用“X”替换第N个匹配项，并且只替换第N个匹配项，我该怎么做？例如，如果我想替换第三个匹配项“10”(匹配项[2])，我不能只说s[matches[2]]="X"因为它做了两次替换“1fooX0barXg
我有一个正在构建的应用程序，我需要一个模型来创建另一个模型的实例。我希望每辆车都有4个轮胎。汽车模型classCar轮胎模型classTire但是，在make_tires内部有一个错误，如果我为Tire尝试它，则没有用于创建或新建的activerecord方法。当我检查轮胎时，它没有这些方法。我该如何补救？错误是这样的:未定义的方法'create'forActiveRecord::AttributeMethods::Serialization::Tire::Module我测试了两个环境:测试和开发，它们都因相同的错误而失败。 最佳答案
我是Google云的新手，我正在尝试对其进行首次部署。我的第一个部署是RubyonRails项目。我基本上是在关注thisguideinthegoogleclouddocumentation.唯一的区别是我使用的是我自己的项目，而不是他们提供的“helloworld”项目。这是我的app.yaml文件runtime:customvm:trueentrypoint:bundleexecrackup-p8080-Eproductionconfig.ruresources:cpu:0.5memory_gb:1.3disk_size_gb:10当我转到我的项目目录并运行gcloudprevie
我正在处理旧代码的一部分。beforedoallow_any_instance_of(SportRateManager).toreceive(:create).and_return(true)endRubocop错误如下:Avoidstubbingusing'allow_any_instance_of'我读到了RuboCop::RSpec:AnyInstance我试着像下面那样改变它。由此beforedoallow_any_instance_of(SportRateManager).toreceive(:create).and_return(true)end对此:let(:sport_
我收到格式为的回复#我需要将其转换为哈希值(针对活跃商家)。目前我正在遍历变量并执行此操作:response.instance_variables.eachdo|r|my_hash.merge!(r.to_s.delete("@").intern=>response.instance_eval(r.to_s.delete("@")))end这有效，它将生成{:first="charlie",:last=>"kelly"},但它似乎有点hacky和不稳定。有更好的方法吗？编辑:我刚刚意识到我可以使用instance_variable_get作为该等式的第二部分，但这仍然是主要问题。
我可以在Azure网站上部署RubyonRails吗？ 最佳答案 还没有。目前仅支持.NET和PHP。 关于ruby-on-rails-RubyonRails可以部署在Azure网站上吗？，我们在StackOverflow上找到一个类似的问题： https://stackoverflow.com/questions/12964010/
文章目录一、概述简介原理模块二、配置Mysql使用版本环境要求1.操作系统2.mysql要求三、配置canal-server离线下载在线下载上传解压修改配置单机配置集群配置分库分表配置1.修改全局配置2.实例配置垂直分库水平分库3.修改group-instance.xml4.启动监听四、配置canal-adapter1修改启动配置2配置映射文件3启动ES数据同步查询所有订阅同步数据同步开关启动4.验证五、配置canal-admin一、概述简介canal是Alibaba旗下的一款开源项目，Java开发。基于数据库增量日志解析，提供增量数据订阅&消费。Git地址：https://github.co
前置步骤我们都操作完了，这篇开始介绍jenkins的集成。话不多说，看操作1、登录进入jenkins后会让你选择安装插件，选择第一个默认的就行。安装完成后设置账号密码，重新登录。2、配置JDK和Git都需要执行路径，所以需要先把执行路径找到，先进入服务器的docker容器，2.1JDK的路径root@69eef9ee86cf:/usr/bin#echo$JAVA_HOME/usr/local/openjdk-82.2Git的路径root@69eef9ee86cf:/#whichgit/usr/bin/git3、先配置JDK和Git。点击：ManageJenkins>>GlobalToolCon
深度学习部署：Windows安装pycocotools报错解决方法1.pycocotools库的简介2.pycocotools安装的坑3.解决办法更多Ai资讯：公主号AiCharm本系列是作者在跑一些深度学习实例时，遇到的各种各样的问题及解决办法，希望能够帮助到大家。ERROR:Commanderroredoutwithexitstatus1:'D:\Anaconda3\python.exe'-u-c'importsys,setuptools,tokenize;sys.argv[0]='"'"'C:\\Users\\46653\\AppData\\Local\\Temp\\pip-instal