2. 服务器规划
操作系统版本为:
CentOS Linux release 7
软件配置:
服务器 |
安装软件 |
Server1 |
Nginx+keepalived(主) 重定向服务(redirect) |
Server2 |
Postgresql(主) redis(从) 重定向服务(redirect) |
Server3 |
Postgresql(从) redis(主) Nginx+keepalived(备) |
Server4 |
Postgresql(日志) redis(从) 重定向服务 |
3. 安装包目录
4. 安装前准备
将所需要的安装软件分别上传到对应的服务器上(如无特殊要求最好安装到/opt目录, 关闭防火墙, 上传yum安装包。
4.1Centos7 关闭防火墙(重要)
systemctl stop firewalld.service
systemctl disable firewalld.service
查看防火墙状态:
firewall-cmd –state
结果如上图所示,则代表已经关闭
4.2上传” rpm-packages”到/opt目录
4.3安装rpm packages
cd /opt/rpm-packages
rpm -Uvh –force–nodeps *.rpm
5. 安装JDK(建议所有服务器都安装)
5.1上传 ”软件-jdk”里面的文件到/opt
5.2查看现有jdk
rpm -qa|grep java
若结果如上则跳过5.3
5.3删除现有jdk
rpm -e –nodeps
5.4安装jdk1.7
rpm -ivh/opt/jdk-7u80-linux-x64.rpm
5.5验证JDK是否正确安装
java -version
如果结果如上,则代表安装正确
6. Nginx 安装(server1, server3)
6.1上传 ”软件-nginx” 里面的文件到/opt
6.2安装
cd /opt
tar -zxvfopenresty-1.11.2.5.tar.gz
cdopenresty-1.11.2.5
./configure
gmake
gmake install
6.3创建软链
ln -s/usr/local/openresty/nginx/sbin/nginx /usr/bin/nginx
6.4修改配置文件
vim /usr/local/openresty/nginx/conf/nginx.conf
增加upstream(如果有多个重定向服务器,需要配置多个server, 例子是2个, 位置与server平级,可以参考配置样例):
upstream myserver{
server 10.33.26.125:8080; # (重定向服务器IP+端口)
server 10.33.26.126:8080; # (重定向服务器IP+端口)
}
替换原来的location /
location / {
set $urlParams '';
rewrite_by_lua_filelua/get_args.lua;
proxy_passhttp://myserver$urlParams;
}
配置样例:
6.5上传get_args.lua
cd /usr/local/openresty/nginx
mkdir lua
cd lua
cp /opt/get_args.lua ./
6.6启动openResty
nginx -c /usr/local/openresty/nginx/conf/nginx.conf
6.7查看nginx是否安装成功
ps -ef|grep nginx
若结果如上图,则代表安装成功,如果失败,可以用以下脚本查看详情:
tail -f/usr/local/openresty/nginx/logs/error.log
7. Keepalived安装(server1,server3)
7.1解压安装
cd /opt
tar -zxvf keepalived-1.3.4.tar.gz
cd keepalived-1.3.4
./configure –prefix=/usr/local/keepalived–sysconf=/etc
make
make install
7.2建立软链
ln-s /usr/local/keepalived/sbin/keepalived /usr/sbin/keepalived
7.3修改配置文件()
注意:先清空原有文件内容,然后按主从添加对应的内容
Vim清空文件命令:dG
vim /etc/keepalived/keepalived.conf
=============主节点配置=================
global_defs {
router_id LVS_DEVEL_1
}
vrrp_scriptchk_nginx {
script"/etc/keepalived/nginx_check.sh"
interval 2
weight -20
}
vrrp_instance VI_1{
state MASTER
interface ens33 #网卡名称 可用ip addr查看
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.33.26.120 #虚拟IP(VIP)
}
}
=============从节点配置=======================
global_defs {
router_id LVS_DEVEL_2
}
vrrp_scriptchk_nginx {
script"/etc/keepalived/nginx_check.sh"
interval 2
weight -20
}
vrrp_instance VI_1{
state backup
interface ens33 #网卡名称 可用ip addr查看
virtual_router_id 51
priority 98
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.33.26.120 #虚拟IP(VIP)
}
}
主配置截图如下:
从配置截图如下:
7.4上传nginx_check.sh
cd /etc/keepalived
cp /opt/nginx_check.sh ./
chmod +x nginx_check.sh
7.5启动keepalived
keepalived-f /etc/keepalived/keepalived.conf
7.6查看keepalived是否安装成功
ps-ef|grep keepalived
若结果如上图,则代表安装成功,如果失败,可以用以下脚本查看详情:
tail -f/var/log/messages
8. Postgresql安装(server2-主,server3-从)
8.1上传 “软件-postgresql”里面的文件到/opt
8.2解压安装
cd /opt
rpm -ivhpostgresql-9.6.6-1-x64-bigsql.rpm
8.3配置主从复制
8.3.1主机配置
8.3.1.1初始化postgres
/opt/postgresql/pgc start pg96
按要求输入密码(eg:postgres)
8.3.1.2初始化数据库(linux和windows二选一,建议用linux)
8.3.1.3Linux操作
上传 “数据库初始化脚本-linux” 到/opt
vim /opt/init_db.sh
修改/opt/init_db.sh中的PG_HOST为主机IP,PGPASSWORD为8.2输入的postgres帐户密码
chmod +x/opt/init_db.sh
sh/opt/init_db.sh
8.3.1.4Windows操作
确保Windows环境下有pg数据库的环境
修改setup.bat中的localhost为主机IP, PGPASSWORD为8.2输入的postgres帐户密码, 执行行以下脚本:
setup.bat
备注: 1_create_db.sql中的数据库名称:image_text,如果需要自定义修改,请修改成你们需要的名字,其他不要改动.
8.3.1.5修改pg_hba.conf
vim /opt/postgresql/data/pg96/pg_hba.conf
增加 replica 用户(10.33.26.125为从机IP),配置如下:
host replication replica<从机IP>/32md5
配置截图如下:
8.3.1.6重启
/opt/postgresql/pgcrestart pg96
8.3.2从机配置
8.3.2.1创建用户和组
groupadd postgres
useradd postgres-g postgres
8.3.2.2将/opt/postgresql目录授权给postgres
chown -R postgres:postgres/opt/postgresql
8.3.2.3切换到postgres用户
su postgres
8.3.2.4从主节点拷贝数据到从节点
/opt/postgresql/pg96/bin/pg_basebackup-h <主机IP> -U replica -D /opt/postgresql/data/pg96 -X stream
8.3.2.5配置recovery.conf
cp/opt/postgresql/pg96/share/postgresql/recovery.conf.sample /opt/postgresql/data/pg96/recovery.conf
vim/opt/postgresql/data/pg96/recovery.conf
修改如下配置:
standby_mode = on # 说明该节点是从服务器
primary_conninfo = 'host=<主机IP> port=5432 user=replica password=replica' # 主服务器的信息以及连接的用户
recovery_target_timeline ='latest'
配置截图如下:
8.3.2.6配置postgresql.conf
vim/opt/postgresql/data/pg96/postgresql.conf
修改配置如下:
hot_standby= on
8.3.2.7创建logs目录
mkdir/opt/postgresql/data/logs
8.3.2.8启动
/opt/postgresql/pg96/bin/pg_ctlstart -D /opt/postgresql/data/pg96/ &
8.3.3验证主从复制
登陆主机,查询:
select client_addr,sync_state frompg_stat_replication;
如果有记录,则代表配置成功
9. Redis安装
9.1说明
server2-从, server3-从, server4-主,建议3台或以上,高可用至少要保持2个sentinel节点存活
9.2上传“软件-redis- redis-4.0.6.tar.gz”到/opt
9.3解压安装
cd /opt
tar xzfredis-4.0.6.tar.gz
cd redis-4.0.6
make
make install
9.4修改配置文件
Redis.conf
从机将标红的IP地址 改成 主机IP地址后上传至/opt/redis-4.0.6
主机直接注掉281行上传至上传至/opt/redis-4.0.6
Sentinel.conf
将标红的IP地址 改成 主机IP地址后上传至/opt/redis-4.0.6
notify_mymaster.sh
修改后上传至/opt/redis-4.0.6
9.5启动redis
/opt/redis-4.0.6/src/redis-server /opt/redis-4.0.6/redis.conf
9.6验证主从配置
/opt/redis-4.0.6/src/redis-cli -h <主机IP> -p 6379 info replication
如果出现以上类似截图, 则代表配置成功
9.7高可用(HA )
9.7.1准备
创建sentinel目录:
mkdir/opt/redis-4.0.6/sentinel-dir
授执行权限
chmod +x /opt/redis-4.0.6/notify_mymaster.sh
9.7.2启动sentinel, 启用自动切换
/opt/redis-4.0.6/src/redis-sentinel/opt/redis-4.0.6/sentinel.conf
9.7.3验证sentinel是否搭建成功
/opt/redis-4.0.6/src/redis-cli-h <主机IP> -p 26379 info sentinel
若结果如截图所示, 则代表成功。
9.7.4在主机上增加虚拟IP
/sbin/ip addr add <虚拟IP>/24 dev <网卡名称>
虚拟IP和网卡名称需要和9.4中配置的notify_mymaster中的配置保持一致
10.Zookeeper安装
10.1上传“软件-zookeeper”里面的文件到/opt
10.2解压
cd /opt
tar -zxvf zookeeper-3.4.6.tar.gz
cd zookeeper-3.4.6/conf
cp zoo_sample.cfg zoo.cfg
sh/opt/zookeeper-3.4.6/bin/zkServer.sh start
10.3验证zookeeper是否安装成功
ps -ef|grepQuorumPeerMain
若上现上述截图, 则代表配置成功
tomcat移除项目名
cd /opt/tomcat-transform/conf/Catalina/localhost
vim ROOT.xml
增加如下配置
13. 启动脚本汇总
13.1 Nginx
杀死:nginx -s stop
启动:nginx
13.2 Keepalived
杀死: pkill keepalived
启动: keepalived -f /etc/keepalived/keepalived.conf
13.3 Postgresql
重启:/opt/postgresql/pgc restart pg96
13.4 Redis
杀死: pkill redis
启动:
/opt/redis-4.0.6/src/redis-server/opt/redis-4.0.6/redis.conf
/opt/redis-4.0.6/src/redis-sentinel/opt/redis-4.0.6/sentinel.conf
get_args.lua:
local cjson = require "cjson"
local request_method = ngx.var.request_method
local args = ""
local request_uri = ngx.var.request_uri
if "POST" == request_method then
ngx.req.read_body()
local args = ngx.req.get_post_args()
local param = ""
for key, val in pairs(args) do
param = key
end
param = cjson.decode(param)
ngx.var.urlParams = request_uri.."username="..tostring(param.username).."&sign="..tostring(param.sign).."×tamp="..tostring(param.timestamp)
else
ngx.var.urlParams = request_uri
end
nginx_check.sh
#!/bin/bash
if [ "$(ps -ef | grep "nginx: master process"| grep -v grep )" == "" ]
then
nginx || killall keepalived
else
echo "nginx is running"
fi
notify_master.sh
#!/bin/bash
MASTER_IP=$6
LOCAL_IP='10.33.26.125' # 本机IP
VIP='10.33.26.127' #虚拟IP, 不能与keepalived中的虚拟IP一致
NETMASK='24'
INTERFACE='eno16777736' #网卡名称
if [ ${MASTER_IP} = ${LOCAL_IP} ]; then
/sbin/ip addr add ${VIP}/${NETMASK} dev ${INTERFACE}
/sbin/arping -q -c 3 -A ${VIP} -I ${INTERFACE}
exit 0
else
/sbin/ip addr del ${VIP}/${NETMASK} dev ${INTERFACE}
exit 0
fi
exit 1
sentinel.conf
daemonize yes
port 26379
protected-mode no
dir "/opt/redis-4.0.6/sentinel-dir"
logfile "/opt/redis-4.0.6/sentinel-dir/sentinel26379.log"
sentinel monitor mymaster 10.33.26.125 6379 2
sentinel down-after-milliseconds mymaster 3000
sentinel failover-timeout mymaster 10000
sentinel parallel-syncs mymaster 1
sentinel client-reconfig-script mymaster /opt/redis-4.0.6/notify_mymaster.sh