任务3:完成JDK 7，Mysql，Memcache，Jenkins的搭建。

安装JDK

yum install -y java

查看是否安装成功

java -version#有如下显示说明安装完成

openjdk version "1.8.0_131"

OpenJDK Runtime Environment (build 1.8.0_131-b12)

OpenJDK 64-Bit Server VM (build 25.131-b12, mixed mode)

安装Mysql

useradd -M -s /sbin/nologin mysql#创建用户

cd /usr/local/src/

wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz

tar zxf mysql-5.7.19-linux-glibc2.12-x86_64.tar.gz -C /usr/local/#解压到指定目录

cd /usr/local/

chown -R mysql.mysql mysql-5.7.19-linux-glibc2.12-x86_64/

ln -s mysql-5.7.19-linux-glibc2.12-x86_64 mysql

配置my.cnf

cat > /etc/my.cnf << EOF

[client]

port = 3306

socket = /tmp/mysql.sock

default-character-set = utf8mb4

[mysqld]

port = 3306

socket = /tmp/mysql.sock

basedir = /usr/local/mysql

datadir = /data/mysql

pid-file = /data/mysql/mysql.pid

user = mysql

bind-address = 0.0.0.0

server-id = 1

init-connect = 'SET NAMES utf8mb4'

character-set-server = utf8mb4

#skip-name-resolve

#skip-networking

back_log = 300

max_connections = 1000

max_connect_errors = 6000

open_files_limit = 65535

table_open_cache = 128

max_allowed_packet = 4M

binlog_cache_size = 1M

max_heap_table_size = 8M

tmp_table_size = 16M

read_buffer_size = 2M

read_rnd_buffer_size = 8M

sort_buffer_size = 8M

join_buffer_size = 8M

key_buffer_size = 4M

thread_cache_size = 8

query_cache_type = 1

query_cache_size = 8M

query_cache_limit = 2M

ft_min_word_len = 4

log_bin = mysql-bin

binlog_format = mixed

expire_logs_days = 30

log_error = /data/mysql/mysql-error.log

slow_query_log = 1

long_query_time = 1

slow_query_log_file = /data/mysql/mysql-slow.log

performance_schema = 0

explicit_defaults_for_timestamp

#lower_case_table_names = 1

skip-external-locking

default_storage_engine = InnoDB

#default-storage-engine = MyISAM

innodb_file_per_table = 1

innodb_open_files = 500

innodb_buffer_pool_size = 64M

innodb_write_io_threads = 4

innodb_read_io_threads = 4

innodb_thread_concurrency = 0

innodb_purge_threads = 1

innodb_flush_log_at_trx_commit = 2

innodb_log_buffer_size = 2M

innodb_log_file_size = 32M

innodb_log_files_in_group = 3

innodb_max_dirty_pages_pct = 90

innodb_lock_wait_timeout = 120

bulk_insert_buffer_size = 8M

myisam_sort_buffer_size = 8M

myisam_max_sort_file_size = 10G

myisam_repair_threads = 1

interactive_timeout = 28800

wait_timeout = 28800

[mysqldump]

quick

max_allowed_packet = 16M

[myisamchk]

key_buffer_size = 8M

sort_buffer_size = 8M

read_buffer = 4M

write_buffer = 4M

EOF

mkdir -p /data/mysql

安装依赖包

yum install -y libaio libaio-devel

yum install -y numactl numactl.devel

/usr/local/mysql/bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql#初始化数据库，"--initialize"会生成一个随机密码(~/.mysql_secret)，而"--initialize-insecure"不会生成密码

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

chmod +x /etc/init.d/mysqld 

chkconfig --add mysqld

chkconfig mysqld on

chkconfig --list

echo "export PATH=$PATH:/usr/local/mysql/bin" >> /etc/profile

source /etc/profile

mysqladmin -uroot passwrod "gg*******"#设置mysql密码

mysql -uroot -p#出现如下界面说明mysql安装完成

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 3

Server version: 5.7.19-log MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| sys                |

+--------------------+

4 rows in set (0.00 sec)

mysql> 

安装Memcache

yum install -y memcached

/etc/init.d/memcached start

ps -ef|grep memcached#有如下显示说明memcache安装完成，启动成功

498      22549     1  0 03:55 ?        00:00:00 memcached -d -p 11211 -u memcached -m 64 -c 1024 -P /var/run/memcached/memcached.pid

root     22563 21150  0 03:58 pts/1    00:00:00 grep memcached

安装jenkins

添加Jenkins源

wget -O /etc/yum.repos.d/jenkins.repo http://jenkins-ci.org/redhat/jenkins.repo

导入公钥

rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.key

安装Jenkins

yum install -y jenkins

相关配置

Jenkins安装目录：

/var/lib/jenkins/

Jenkins配置文件地址：

/etc/sysconfig/jenkins

这就是Jenkins的配置文件，可以在这里查看Jenkins默认的配置。

cat /etc/sysconfig/jenkins

这里介绍下三个比较重要的配置：

JENKINS_HOME

JENKINS_USER

JENKINS_PORT

JENKINS_HOME是Jenkins的主目录，Jenkins工作的目录都放在这里,Jenkins储存文件的地址,Jenkins的插件，生成的文件都在这个目录下。

JENKINS_USER 是Jenkins的用户，拥有$JENKINS_HOME和/var/log/jenkins的权限。

JENKINS_PORT是Jenkins的端口，默认端口是8080。

启动jenkins

/etc/init.d/jenkins start

在浏览器中输入：http://<服务器ip>:8080就可以进入Jenkins配置界面了

根据提示输入密码

cat /var/lib/jenkins/secrets/initialAdminPassword#在服务器上查看密码

默认安装所需要的插件

安装成功后设置管理员账号密码邮箱

登录成功后界面如下所示#我这里已经用nginx反向代理去掉了端口号，直接访问地址jenkins.igougui.com