前提-配置java環境變量
準備centos服務器或者虛擬機,以及JAVA環境,這個是必須的前提啊,我相信你可以的。
tomcat
# 下載
curl "http://mirror.bit.edu.cn/apache/tomcat/tomcat-8/v8.5.31/bin/apache-tomcat-8.5.31.tar.gz" -o apache-tomcat-8.5.31.tar.gz
# 解壓
tar -xvf apache-tomcat-8.5.31.tar.gz
# 啟動
./apache-tomcat-8.5.31/bin/startup.sh
nginx
下載及解壓 相關的模塊到/u01目錄
curl "http://nginx.org/download/nginx-1.14.0.tar.gz" -o nginx-1.14.0.tar.gz
tar -xvf nginx-1.14.0.tar.gz
curl "http://www.zlib.net/zlib-1.2.11.tar.gz" -o zlib-1.2.11.tar.gz
tar -xvf zlib-1.2.11.tar.gz
curl "https://jaist.dl.sourceforge.net/project/pcre/pcre/8.41/pcre-8.41.tar.gz" -o pcre-8.41.tar.gz
tar -xvf pcre-8.41.tar.gz
curl "https://www.openssl.org/source/openssl-1.0.2o.tar.gz" -o openssl-1.0.2o.tar.gz
tar -xvf openssl-1.0.2o.tar.gz
編譯安裝nginx
cd nginx-1.14.0
./configure --prefix=/usr/local/nginx --with-http_ssl_module --with-pcre=../pcre-8.41 --with-zlib=../zlib-1.2.11 --with-openssl=../openssl-1.0.2o
make
make install
如果有異常:./configure: error: C compiler cc is not found,則安裝gcc等軟件
yum -y install gcc gcc-c++ autoconf automake make
配置並啟動,最精簡的nginx負載均衡配置,僅15行配置,直接覆蓋conf文件夾下面的nginx.conf
接下來就是通過keepalived實現nginx的高可用了
學習感言
這是我在學習下面這些高併發分佈式技術時的筆記,不知道怎麼發附件,需要配置文件的話我後續補上,或者你可以私信我。
keepalived
下載安裝相關相關的組件
yum -y install openssl-devel
yum -y install libnl libnl-devel
yum install -y libnfnetlink-devel
下載安裝keepalived
# 下載
curl "http://www.keepalived.org/software/keepalived-1.4.4.tar.gz" -o keepalived-1.4.4.tar.gz
tar -xvf keepalived-1.4.4.tar.gz
cd keepalived-1.4.4
# 安裝到/usr/local/keepalived目錄
./configure --prefix=/usr/local/keepalived --sysconf=/etc
make && make install
配置文件存放地址
配置放在/etc/keepalived/,三份配置文件(一個nginx_monitor監控腳本,主備各一份keepalived配置)
nginx監控shell腳本 nginx_monitor.sh 文件
# 創建nginx monitor 腳本,並賦予可執行權限
chmod +x /etc/keepalived/nginx_monitor.sh
# 測試一下腳本能不能執行
執行命令:/etc/keepalived/nginx_monitor.sh
沒報錯即表示為成功
keepalived配置(/etc/keepalived/目錄下)
# - master主機
keepalived-nginx-master.conf
# 放在備機- backup備機
keepalived-nginx-backup.conf
啟動keepalived
# 啟動master主機
/usr/local/keepalived/sbin/keepalived -f /etc/keepalived/keepalived-nginx-master.conf
# 啟動backup備機
/usr/local/keepalived/sbin/keepalived -f /etc/keepalived/keepalived-nginx-backup.conf
停止
ps -ef | grep keepalived
kill -9 關閉相關的進程
測試高可用
1. 關掉備機,功能完全不受影響。
2. 關掉主機,虛擬IP漂移到備機,備機開始工作。
3. 關掉主機nginx,主機監控到無nginx後,自動切換
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