CentOS 7.X 源码编译安装MariaDB-10.2.X_group ‘mail’ not found-程序员宅基地
技术标签： Linux 运维 MySQL MariaDB mysql 云计算
CentOS 7 编译安装MariaDB-10.2.X
CentOS 7下mariadb-10.1.22 源码编译安装过程笔记，希望对大家有帮助。
下载文件https://mariadb.com/
或
https://downloads.mariadb.org/mariadb/10.2.11/
源码包的下载
下载链接：
https://mirrors.tuna.tsinghua.edu.cn/mariadb//mariadb-10.2.11/source/mariadb-10.2.11.tar.gz
[root@begin mariaDB]# wget https://mirrors.tuna.tsinghua.edu.cn/mariadb//mariadb-10.2.11/source/mariadb-10.2.11.tar.gz
--2018-01-01 23:31:27-- https://mirrors.tuna.tsinghua.edu.cn/mariadb//mariadb-10.2.11/source/mariadb-10.2.11.tar.gz
Resolving mirrors.tuna.tsinghua.edu.cn (mirrors.tuna.tsinghua.edu.cn)... 101.6.6.178, 2402:f000:1:416:101:6:6:178
Connecting to mirrors.tuna.tsinghua.edu.cn (mirrors.tuna.tsinghua.edu.cn)|101.6.6.178|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 72772830 (69M) [application/octet-stream]
Saving to: ‘mariadb-10.2.11.tar.gz’
100%[====================================================================================================================>] 72,772,830 22.0MB/s in 3.2s
2018-01-01 23:31:31 (22.0 MB/s) - ‘mariadb-10.2.11.tar.gz’ saved [72772830/72772830]
[root@begin mariaDB]# ll -h
total 70M
-rw-r--r-- 1 root root 70M Nov 27 18:09 mariadb-10.2.11.tar.gz
[root@begin mariaDB]#
[root@begin mariaDB]# tar -xf mariadb-10.2.11.tar.gz
[root@begin mariaDB]# ll
total 71072
drwxrwxr-x 33 mysql mysql 4096 Nov 27 18:09 mariadb-10.2.11
-rw-r--r-- 1 root root 72772830 Nov 27 18:09 mariadb-10.2.11.tar.gz
[root@begin mariaDB]# cd mariadb-10.2.11/
[root@begin mariadb-10.2.11]# 编译安装
1、安装开发环境
[root@haiyuan mariaDB]# yum grouplist | grep Tools
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Console Internet Tools
Development Tools
Graphical Administration Tools
Security Tools
System Administration Tools
[root@haiyuan mariaDB]# yum groupinstall Development Tools -y
Loaded plugins: fastestmirror
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Loading mirror speeds from cached hostfile
Warning: group Tools does not exist.
Resolving Dependencies
--> Running transaction check
---> Package autoconf.noarch 0:2.69-11.el7 will be installed
--> Processing Dependency: m4 >= 1.4.14 for package: autoconf-2.69-11.el7.noarch
--> Processing Dependency: perl(Data::Dumper) for package: autoconf-2.69-11.el7.noarch
......
Installed:
autoconf.noarch 0:2.69-11.el7 automake.noarch 0:1.13.4-3.el7 bison.x86_64 0:3.0.4-1.el7 byacc.x86_64 0:1.9.20130304-3.el7
cscope.x86_64 0:15.8-10.el7 ctags.x86_64 0:5.8-13.el7 diffstat.x86_64 0:1.57-4.el7 doxygen.x86_64 1:1.8.5-3.el7
flex.x86_64 0:2.5.37-3.el7 gcc-c++.x86_64 0:4.8.5-16.el7_4.1 git.x86_64 0:1.8.3.1-12.el7_4 indent.x86_64 0:2.2.11-13.el7
intltool.noarch 0:0.50.2-7.el7 libtool.x86_64 0:2.4.2-22.el7_3 patchutils.x86_64 0:0.3.3-4.el7 rcs.x86_64 0:5.9.0-5.el7
rpm-sign.x86_64 0:4.11.3-25.el7 subversion.x86_64 0:1.7.14-11.el7_4 swig.x86_64 0:2.0.10-5.el7 systemtap.x86_64 0:3.1-4.el7_4
Dependency Installed:
apr.x86_64 0:1.4.8-3.el7_4.1 apr-util.x86_64 0:1.5.2-6.el7 boost-date-time.x86_64 0:1.53.0-27.el7
dyninst.x86_64 0:9.3.1-1.el7 efivar-libs.x86_64 0:31-4.el7 emacs-filesystem.noarch 1:24.3-20.el7_4
gettext-common-devel.noarch 0:0.19.8.1-2.el7 gettext-devel.x86_64 0:0.19.8.1-2.el7 libdwarf.x86_64 0:20130207-4.el7
libgnome-keyring.x86_64 0:3.12.0-1.el7 libstdc++-devel.x86_64 0:4.8.5-16.el7_4.1 m4.x86_64 0:1.4.16-10.el7
mokutil.x86_64 0:12-1.el7.centos neon.x86_64 0:0.30.0-3.el7 pakchois.x86_64 0:0.4-10.el7
perl-Data-Dumper.x86_64 0:2.145-3.el7 perl-Error.noarch 1:0.17020-2.el7 perl-Git.noarch 0:1.8.3.1-12.el7_4
perl-TermReadKey.x86_64 0:2.30-20.el7 perl-Test-Harness.noarch 0:3.28-3.el7 perl-XML-Parser.x86_64 0:2.41-10.el7
subversion-libs.x86_64 0:1.7.14-11.el7_4 systemtap-client.x86_64 0:3.1-4.el7_4 systemtap-devel.x86_64 0:3.1-4.el7_4
systemtap-runtime.x86_64 0:3.1-4.el7_4
Dependency Updated:
cpp.x86_64 0:4.8.5-16.el7_4.1 gcc.x86_64 0:4.8.5-16.el7_4.1 gcc-gfortran.x86_64 0:4.8.5-16.el7_4.1 gettext.x86_64 0:0.19.8.1-2.el7
gettext-libs.x86_64 0:0.19.8.1-2.el7 libgcc.x86_64 0:4.8.5-16.el7_4.1 libgfortran.x86_64 0:4.8.5-16.el7_4.1 libgomp.x86_64 0:4.8.5-16.el7_4.1
libquadmath.x86_64 0:4.8.5-16.el7_4.1 libquadmath-devel.x86_64 0:4.8.5-16.el7_4.1 libstdc++.x86_64 0:4.8.5-16.el7_4.1 rpm.x86_64 0:4.11.3-25.el7
rpm-build.x86_64 0:4.11.3-25.el7 rpm-build-libs.x86_64 0:4.11.3-25.el7 rpm-libs.x86_64 0:4.11.3-25.el7 rpm-python.x86_64 0:4.11.3-25.el7
Complete!
[root@haiyuan mariaDB]# yum install -y ncurses-devel openssl-devel openssl相关命令如下：
yum groupinstall “Development Tools”
yum install -y ncurses-devel openssl-devel openssl
2.安装cmake
可以去cmake 官网进行下载：
https://cmake.org/download/
[root@haiyuan mariaDB]# wget https://cmake.org/files/v3.10/cmake-3.10.1.tar.gz
--2018-01-02 22:06:59-- https://cmake.org/files/v3.10/cmake-3.10.1.tar.gz
Resolving cmake.org (cmake.org)... 66.194.253.19
Connecting to cmake.org (cmake.org)|66.194.253.19|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 7824043 (7.5M) [application/x-gzip]
Saving to: ‘cmake-3.10.1.tar.gz’
100%[=================================================================================================================>] 7,824,043 118KB/s in 28s
2018-01-02 22:07:29 (270 KB/s) - ‘cmake-3.10.1.tar.gz’ saved [7824043/7824043]
[root@haiyuan mariaDB]# ll
total 78716
-rw-r--r-- 1 root root 7824043 Dec 14 22:09 cmake-3.10.1.tar.gz
drwxrwxr-x 33 1001 1001 4096 Nov 27 18:09 mariadb-10.2.11
-rw-r--r-- 1 root root 72772830 Nov 27 18:09 mariadb-10.2.11.tar.gz
[root@haiyuan mariaDB]# tar -xf cmake-3.10.1.tar.gz
[root@haiyuan mariaDB]# cd cmake-3.10.1
[root@haiyuan cmake-3.10.1]# ls
Auxiliary CMakeGraphVizOptions.cmake CompileFlags.cmake CTestConfig.cmake Help README.rst Utilities
bootstrap CMakeLists.txt configure CTestCustom.cmake.in Licenses Source
CMakeCPack.cmake CMakeLogo.gif CONTRIBUTING.rst DartConfig.cmake Modules Templates
CMakeCPackOptions.cmake.in cmake_uninstall.cmake.in Copyright.txt doxygen.config Packaging Tests
[root@haiyuan cmake-3.10.1]# ./bootstrap
---------------------------------------------
CMake 3.10.1, Copyright 2000-2017 Kitware, Inc. and Contributors
Found GNU toolchain
C compiler on this system is: gcc
C++ compiler on this system is: g++ -std=gnu++1y
Makefile processor on this system is: gmake
[root@haiyuan cmake-3.10.1]# make && make install
Scanning dependencies of target cmsys
[ 0%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/ProcessUNIX.c.o
[ 0%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/Base64.c.o================
3.安装前准备
3.1.准备目录
[root@haiyuan cmake-3.10.1]# mkdir -pv /data_linux/mysql/3306/{data,logs/{binlog,relaylog}}
mkdir: created directory ‘/data_linux/mysql’
mkdir: created directory ‘/data_linux/mysql/3306’
mkdir: created directory ‘/data_linux/mysql/3306/data’
mkdir: created directory ‘/data_linux/mysql/3306/logs’
mkdir: created directory ‘/data_linux/mysql/3306/logs/binlog’
mkdir: created directory ‘/data_linux/mysql/3306/logs/relaylog’
[root@haiyuan cmake-3.10.1]# 3.2.添加用户
[root@haiyuan cmake-3.10.1]# groupadd mysql
[root@haiyuan cmake-3.10.1]# useradd -s /sbin/nologin -g mysql -M mysql
Group 'mail' not found. Creating the user mailbox file with 0600 mode.
[root@haiyuan cmake-3.10.1]# chown mysql:mysql /data_linux/mysql/3306/ -R
[root@haiyuan cmake-3.10.1]#
==============
4.编译安装
[root@haiyuan mariadb-10.2.11]# cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data_linux/mysql/3306/data -DSYSCONFDIR=/etc -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_ARCHIVE_STORAGE_ENGINE=1 -DWITH_BLACKHOLE_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DWITH_SSL=system -DWITH_ZLIB=system -DWITH_LIBWRAP=0 -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DENABLED_LOCAL_INFILE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DWITH_DEBUG=0 -DWITHOUT_MROONGA_STORAGE_ENGINE=1
......
CMake Deprecation Warning at cmake/for_clients.cmake:15 (CMAKE_POLICY):
The OLD behavior for policy CMP0007 will be removed from a future version
of CMake.
The cmake-policies(7) manual explains that the OLD behaviors of all
policies are deprecated and that a policy should be set to OLD only under
specific short-term circumstances. Projects should be ported to the NEW
behavior and not rely on setting a policy to OLD.
Call Stack (most recent call first):
CMakeLists.txt:415 (INCLUDE)
-- Configuring done
-- Generating done
-- Build files have been written to: /data_linux/mariaDB/mariadb-10.2.11
[root@haiyuan mariadb-10.2.11]# make
[root@haiyuan mariadb-10.2.11]# make install
如果上面make需要修改参数，重新编译 可以删除原来本目录下的CMakeCache.txt
mv CMakeCache.txt CMakeCache.txt.bak
5.安装完环境准备
[root@haiyuan mariadb-10.2.11]# chmod +w /usr/local/mysql/
[root@haiyuan mariadb-10.2.11]# chown -R mysql:mysql /usr/local/mysql/
[root@haiyuan mariadb-10.2.11]# 6.拷贝配置文件并修改
[root@haiyuan mariadb-10.2.11]# cp support-files/my-large.cnf /etc/my.cnf
cp: overwrite ‘/etc/my.cnf’? y
[root@haiyuan mariadb-10.2.11]# vim /etc/my.cnf
增加如下：
datadir = /data_linux/mysql/3306/data
innodb_flush_log_at_trx_commit = 2
innodb_file_per_table = ON
skip_name_resolve = ON
=======
查看配置文件当前有效配置：
[root@haiyuan mariadb-10.2.11]# sed -e "s/#.*//g" /etc/my.cnf | awk '{if (length !=0) print $0}'
[client]
port = 3306
socket = /tmp/mysql.sock
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 256M
max_allowed_packet = 1M
table_open_cache = 256
sort_buffer_size = 1M
read_buffer_size = 1M
read_rnd_buffer_size = 4M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size= 16M
thread_concurrency = 8
log-bin=mysql-bin
binlog_format=mixed
server-id = 1
datadir = /data_linux/mysql/3306/data
innodb_data_home_dir = /data_linux/mysql/3306/data
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /data_linux/mysql/3306/data
innodb_buffer_pool_size = 256M
innodb_log_file_size = 64M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 2
innodb_lock_wait_timeout = 50
innodb_file_per_table = ON
skip_name_resolve = ON
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 128M
sort_buffer_size = 128M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
[root@haiyuan mariadb-10.2.11]# 7.初始化mysql
[root@haiyuan mariadb-10.2.11]# scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/data_linux/mysql/3306/data/ --defaults-file=/etc/my.cnf
WARNING: The host 'haiyuan' could not be looked up with /usr/local/mysql//bin/resolveip.
This probably means that your libc libraries are not 100 % compatible
with this binary MariaDB version. The MariaDB daemon, mysqld, should work
normally with the exception that host name resolving will not work.
This means that you should use IP addresses instead of hostnames
when specifying MariaDB privileges !
Installing MariaDB/MySQL system tables in '/data_linux/mysql/3306/data/' ...
2018-01-02 23:28:50 140467365218368 [Warning] 'THREAD_CONCURRENCY' is deprecated and will be removed in a future release.
2018-01-02 23:28:50 140467365218368 [ERROR] /usr/local/mysql//bin/mysqld: unknown variable 'innodb_additional_mem_pool_size=20M'
2018-01-02 23:28:50 140467365218368 [ERROR] Aborting
Installation of system tables failed! Examine the logs in
/data_linux/mysql/3306/data/ for more information.
The problem could be conflicting information in an external
my.cnf files. You can ignore these by doing:
shell> scripts/mysql_install_db --defaults-file=~/.my.cnf
You can also try to start the mysqld daemon with:
shell> /usr/local/mysql//bin/mysqld --skip-grant --general-log &
and use the command line tool /usr/local/mysql//bin/mysql
to connect to the mysql database and look at the grant tables:
shell> /usr/local/mysql//bin/mysql -u root mysql
mysql> show tables;
Try 'mysqld --help' if you have problems with paths. Using
--general-log gives you a log in /data_linux/mysql/3306/data/ that may be helpful.
The latest information about mysql_install_db is available at
https://mariadb.com/kb/en/installing-system-tables-mysql_install_db
MariaDB is hosted on launchpad; You can find the latest source and
email lists at http://launchpad.net/maria
Please check all of the above before submitting a bug report
at http://mariadb.org/jira
[root@haiyuan mariadb-10.2.11]#
查看初始化结果：
[root@haiyuan mariadb-10.2.11]# ll /data_linux/mysql/3306/data/
total 206880
-rw-rw---- 1 mysql mysql 16384 Jan 2 23:28 aria_log.00000001
-rw-rw---- 1 mysql mysql 52 Jan 2 23:28 aria_log_control
-rw-rw---- 1 mysql mysql 2717 Jan 2 23:28 ib_buffer_pool
-rw-rw---- 1 mysql mysql 77594624 Jan 2 23:28 ibdata1
-rw-rw---- 1 mysql mysql 67108864 Jan 2 23:28 ib_logfile0
-rw-rw---- 1 mysql mysql 67108864 Jan 2 23:28 ib_logfile1
drwx------ 2 mysql root 4096 Jan 2 23:28 mysql
-rw-rw---- 1 mysql mysql 0 Jan 2 23:28 mysql-bin.index
drwx------ 2 mysql root 4096 Jan 2 23:28 test
[root@haiyuan mariadb-10.2.11]#
8.启动服务
[root@haiyuan mariadb-10.2.11]# cp support-files/mysql.server /etc/rc.d/init.d/mysqld
[root@haiyuan mariadb-10.2.11]# chmod +x /etc/rc.d/init.d/mysqld
[root@haiyuan mariadb-10.2.11]# chkconfig --add mysqld
[root@haiyuan mariadb-10.2.11]# /etc/init.d/mysqld restart
Restarting mysqld (via systemctl): [ OK ]
[root@haiyuan mariadb-10.2.11]# ####9.添加环境变量
[root@haiyuan mariadb-10.2.11]# vim /etc/profile
##export PATH=$PATH:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/usr/local/mysql/bin
[root@haiyuan mariadb-10.2.11]# source /etc/profile
[root@haiyuan mariadb-10.2.11]# 10.初始化数据库用户表
[root@haiyuan mariadb-10.2.11]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 10.2.11-MariaDB-log Source distribution
Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> use mysql;
Database changed
MariaDB [mysql]> select user,host,password from mysql.user;
+------+-----------+----------+
| user | host | password |
+------+-----------+----------+
| root | localhost | |
| root | haiyuan | |
| root | 127.0.0.1 | |
| root | ::1 | |
| | localhost | |
| | haiyuan | |
+------+-----------+----------+
6 rows in set (0.00 sec)
MariaDB [mysql]> update user set password=PASSWORD('newpassword') where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4 Changed: 4 Warnings: 0
MariaDB [mysql]> delete from user where user='';
Query OK, 2 rows affected (0.00 sec)
MariaDB [mysql]> select user,host,password from mysql.user;
+------+-----------+-------------------------------------------+
| user | host | password |
+------+-----------+-------------------------------------------+
| root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | haiyuan | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | 127.0.0.1 | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| root | ::1 | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+------+-----------+-------------------------------------------+
4 rows in set (0.00 sec)
MariaDB [mysql]> 
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
智能推荐
Docker 快速上手学习入门教程_docker菜鸟教程-程序员宅基地
文章浏览阅读2.5w次，点赞6次，收藏50次。官方解释是，docker 容器是机器上的沙盒进程，它与主机上的所有其他进程隔离。所以容器只是操作系统中被隔离开来的一个进程，所谓的容器化，其实也只是对操作系统进行欺骗的一种语法糖。_docker菜鸟教程
电脑技巧：Windows系统原版纯净软件必备的两个网站_msdn我告诉你-程序员宅基地
文章浏览阅读5.7k次，点赞3次，收藏14次。该如何避免的，今天小编给大家推荐两个下载Windows系统官方软件的资源网站，可以杜绝软件捆绑等行为。该站提供了丰富的Windows官方技术资源，比较重要的有MSDN技术资源文档库、官方工具和资源、应用程序、开发人员工具（Visual Studio 、SQLServer等等）、系统镜像、设计人员工具等。总的来说，这两个都是非常优秀的Windows系统镜像资源站，提供了丰富的Windows系统镜像资源，并且保证了资源的纯净和安全性，有需要的朋友可以去了解一下。这个非常实用的资源网站的创建者是国内的一个网友。_msdn我告诉你
vue2封装对话框el-dialog组件_<el-dialog 封装成组件 vue2-程序员宅基地
文章浏览阅读1.2k次。vue2封装对话框el-dialog组件_
MFC 文本框换行_c++ mfc同一框内输入二行怎么换行-程序员宅基地
文章浏览阅读4.7k次，点赞5次，收藏6次。MFC 文本框换行 标签： it mfc 文本框1.将Multiline属性设置为True2.换行是使用"\r\n" (宽字符串为L"\r\n")3.如果需要编辑并且按Enter键换行,还要将 Want Return 设置为 True4.如果需要垂直滚动条的话将Vertical Scroll属性设置为True,需要水平滚动条的话将Horizontal Scroll属性设_c++ mfc同一框内输入二行怎么换行
redis-desktop-manager无法连接redis-server的解决方法_redis-server doesn't support auth command or ismis-程序员宅基地
文章浏览阅读832次。检查Linux是否是否开启所需端口，默认为6379，若未打开，将其开启：以root用户执行iptables -I INPUT -p tcp --dport 6379 -j ACCEPT如果还是未能解决，修改redis.conf，修改主机地址：bind 192.168.85.**；然后使用该配置文件，重新启动Redis服务./redis-server redis.conf..._redis-server doesn't support auth command or ismisconfigured. try
实验四 数据选择器及其应用-程序员宅基地
文章浏览阅读4.9k次。济大数电实验报告_数据选择器及其应用
随便推点
灰色预测模型matlab_MATLAB实战|基于灰色预测河南省社会消费品零售总额预测-程序员宅基地
文章浏览阅读236次。1研究内容消费在生产中占据十分重要的地位，是生产的最终目的和动力，是保持省内经济稳定快速发展的核心要素。预测河南省社会消费品零售总额，是进行宏观经济调控和消费体制改变创新的基础，是河南省内人民对美好的全面和谐社会的追求的要求，保持河南省经济稳定和可持续发展具有重要意义。本文建立灰色预测模型，利用MATLAB软件，预测出2019年~2023年河南省社会消费品零售总额预测值分别为21881...._灰色预测模型用什么软件
log4qt-程序员宅基地
文章浏览阅读1.2k次。12.4-在Qt中使用Log4Qt输出Log文件，看这一篇就足够了一、为啥要使用第三方Log库，而不用平台自带的Log库二、Log4j系列库的功能介绍与基本概念三、Log4Qt库的基本介绍四、将Log4qt组装成为一个单独模块五、使用配置文件的方式配置Log4Qt六、使用代码的方式配置Log4Qt七、在Qt工程中引入Log4Qt库模块的方法八、获取示例中的源代码一、为啥要使用第三方Log库，而不用平台自带的Log库首先要说明的是，在平时开发和调试中开发平台自带的“打印输出”已经足够了。但_log4qt
100种思维模型之全局观思维模型-67_计算机中对于全局观的-程序员宅基地
文章浏览阅读786次。全局观思维模型，一个教我们由点到线，由线到面，再由面到体，不断的放大格局去思考问题的思维模型。_计算机中对于全局观的
线程间控制之CountDownLatch和CyclicBarrier使用介绍_countdownluach于cyclicbarrier的用法-程序员宅基地
文章浏览阅读330次。一、CountDownLatch介绍CountDownLatch采用减法计算；是一个同步辅助工具类和CyclicBarrier类功能类似，允许一个或多个线程等待，直到在其他线程中执行的一组操作完成。二、CountDownLatch俩种应用场景： 场景一：所有线程在等待开始信号(startSignal.await()),主流程发出开始信号通知，既执行startSignal.countDown()方法后;所有线程才开始执行；每个线程执行完发出做完信号，既执行do..._countdownluach于cyclicbarrier的用法
自动化监控系统Prometheus&Grafana_-自动化监控系统prometheus&grafana实战-程序员宅基地
文章浏览阅读508次。Prometheus 算是一个全能型选手，原生支持容器监控，当然监控传统应用也不是吃干饭的，所以就是容器和非容器他都支持，所有的监控系统都具备这个流程，_-自动化监控系统prometheus&grafana实战
React 组件封装之 Search 搜索_react search-程序员宅基地
文章浏览阅读4.7k次。输入关键字，可以通过键盘的搜索按钮完成搜索功能。_react search