4.56-MariaDB的密碼重置4.57 MariaDB慢查詢日誌 4.58 Tomcat_JDK部署 4.59 zrlog安裝 4.60 Nginx代理Tomcat
4.56-MariaDB的密碼重置php
若是記得root的密碼：html
mysqladmin -uroot -paminglinux password "aming-linux"
若是不記得root密碼：java
1）編輯/etc/my.cnf
增長：skip-grant
重啓服務
2）登陸進MariaDB，執行
use mysql 切換到mysql庫
desc user 查看user表的全部字段
update user set authentication_string=password("aming-linux") where user='root';
3）退出MariaDB，刪除/etc/my.cnf裏面的skip-grant, 重啓服務
4）用新密碼登陸便可
常識：mysql
mysql在5.7.36版本以後把密碼字段存到了authentication_string字段裏，在以前版本存在password字段裏。
update user set password=password("aming-linux") where user='root';
4.57 MariaDB慢查詢日誌linux
爲何要配置慢查詢日誌？nginx
目的是爲了幫助咱們分析MariaDB的瓶頸點。
如何配置？web
1）進入MariaDB裏面執行： show variables like 'slow%'; show variables like 'datadir'; show variables like 'long%'; 2）打開配置文件/etc/my.cnf，編輯，增長： slow_query_log = ON slow_query_log_file = /data/mysql/aminglinux01-slow.log long_query_time = 2 3）重啓服務 4）模擬慢查詢 select sleep(5); 5）查看慢查詢日誌： cat /data/mysql/aminglinux01-slow.log
擴展：sql
show processlist; show full processlist; mysql -uroot -pxxxx -e "show processlist"
4.58 Tomcat_JDK部署數據庫
JAVA 應用要運行起來，須要一個JVM（JAVA虛擬機）apache
JVM --> JDK
Oracle官方JDK下載地址： https://www.oracle.com/technetwork/java/javase/downloads/index.html
CentOS7上yum安裝openjdk
yum install -y java-1.8.0-openjdk
Tomcat官方網站：
http://tomcat.apache.org/
Tomcat版本：
7.0 8.5 9.0
下載地址：
https://tomcat.apache.org/download-90.cgi wget https://www-eu.apache.org/dist/tomcat/tomcat-9/v9.0.14/bin/apache-tomcat-9.0.14.tar.gz
安裝Tomcat
tar zxf apache-tomcat-9.0.14.tar.gz mv apache-tomcat-9.0.14 /usr/local/tomcat
啓動
/usr/local/tomcat/bin/startup.sh
查看端口
netstat -lntp |grep java 8080爲WEB端口 8005 shutdown（管理端口） 8009 AJP端口（第三方的應用鏈接這個接口，和Tomcat結合起來）
查看進程
ps aux |grep java ; ps aux |grep tomcat
4.59 zrlog安裝
zrlog 是一款開源的JAVA應用，博客系統 官網： https://www.zrlog.com/
下載：
wget 'http://dl.zrlog.com/release/zrlog-2.1.0-3617b2e-release.war?attname=ROOT.war&ref=index' mv zrlog-2.1.0-3617b2e-release.war\?attname\=ROOT.war\&ref\=index zrlog-2.1.0.war
安裝：
mv zrlog-2.1.0.war /usr/local/tomcat/webapps/ cd !$ mv ROOT ROOT.bak mv zrlog-2.1.0 ROOT
瀏覽器訪問：
添加防火牆規則： firewall-cmd --add-port=8080/tcp --permanent firewall-cmd --reload http://ip:8080/ 開始安裝
數據庫操做：
mysql -uroot -paming-linux -e "create database zrlog" mysql -uroot -paming-linux -e "grant all on zrlog.* to 'zrlog'@'127.0.0.1' identified by 'zrlog-pass'"
4.60 Nginx代理Tomcat
爲何要爲Tomcat配置反向代理？
1）若是同一臺機器又有Nginx又有Tomcat，則會產生端口衝突。 2）咱們須要把8080端口變成80端口 3）Nginx對於靜態的請求速度上要優於Tomcat，Tomcat不擅長作高併發的靜態文件請求處理
如何配置？
server {
server_name z.aminglinux.cc;
location /
{
proxy_pass http://127.0.0.1:8080;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
代碼後續慢慢補齊
4.56 MariaDB密碼重置
若是不記得mysql的root密碼
[root@test01 ~]# vi /etc/my.cnf
[mysqld]
datadir=/data/mysql
socket=/tmp/mysql.sock
skip-grant
[root@test01 ~]# /etc/init.d/mysqld restart 重啓
Restarting mysqld (via systemctl): [ 肯定 ]
[root@test01 ~]# mysql -uroot 此時就不須要再輸入密碼了
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 9
Server version: 10.3.12-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]>
MariaDB [(none)]> use mysql 切換到mysql庫下面去
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
MariaDB [mysql]> desc user; 看一下
+------------------------+-----------------------------------+------+-----+----------+-------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+-----------------------------------+------+-----+----------+-------+
| Host | char(60) | NO | PRI | | |
| User | char(80) | NO | PRI | | |
| Password | char(41) | NO | | | |
| Select_priv | enum('N','Y') | NO | | N | |
| Insert_priv | enum('N','Y') | NO | | N | |
| Update_priv | enum('N','Y') | NO | | N | |
| Delete_priv | enum('N','Y') | NO | | N | |
| Create_priv | enum('N','Y') | NO | | N | |
| Drop_priv | enum('N','Y') | NO | | N | |
| Reload_priv | enum('N','Y') | NO | | N | |
| Shutdown_priv | enum('N','Y') | NO | | N | |
| Process_priv | enum('N','Y') | NO | | N | |
| File_priv | enum('N','Y') | NO | | N | |
| Grant_priv | enum('N','Y') | NO | | N | |
| References_priv | enum('N','Y') | NO | | N | |
| Index_priv | enum('N','Y') | NO | | N | |
| Alter_priv | enum('N','Y') | NO | | N | |
| Show_db_priv | enum('N','Y') | NO | | N | |
| Super_priv | enum('N','Y') | NO | | N | |
| Create_tmp_table_priv | enum('N','Y') | NO | | N | |
| Lock_tables_priv | enum('N','Y') | NO | | N | |
| Execute_priv | enum('N','Y') | NO | | N | |
| Repl_slave_priv | enum('N','Y') | NO | | N | |
| Repl_client_priv | enum('N','Y') | NO | | N | |
| Create_view_priv | enum('N','Y') | NO | | N | |
| Show_view_priv | enum('N','Y') | NO | | N | |
| Create_routine_priv | enum('N','Y') | NO | | N | |
| Alter_routine_priv | enum('N','Y') | NO | | N | |
| Create_user_priv | enum('N','Y') | NO | | N | |
| Event_priv | enum('N','Y') | NO | | N | |
| Trigger_priv | enum('N','Y') | NO | | N | |
| Create_tablespace_priv | enum('N','Y') | NO | | N | |
| Delete_history_priv | enum('N','Y') | NO | | N | |
| ssl_type | enum('','ANY','X509','SPECIFIED') | NO | | | |
| ssl_cipher | blob | NO | | NULL | |
| x509_issuer | blob | NO | | NULL | |
| x509_subject | blob | NO | | NULL | |
| max_questions | int(11) unsigned | NO | | 0 | |
| max_updates | int(11) unsigned | NO | | 0 | |
| max_connections | int(11) unsigned | NO | | 0 | |
| max_user_connections | int(11) | NO | | 0 | |
| plugin | char(64) | NO | | | |
| authentication_string | text | NO | | NULL | |
| password_expired | enum('N','Y') | NO | | N | |
| is_role | enum('N','Y') | NO | | N | |
| default_role | char(80) | NO | | | |
| max_statement_time | decimal(12,6) | NO | | 0.000000 | |
+------------------------+-----------------------------------+------+-----+----------+-------+
47 rows in set (0.022 sec)
新版本的MariaDB 密碼文件是這個authentication_string
MariaDB [mysql]> update user set authentication_string=password("champin") where user='root';
Query OK, 4 rows affected (0.001 sec)
Rows matched: 4 Changed: 4 Warnings: 0
MariaDB [mysql]> Bye
[root@test01 ~]# vi /etc/my.cnf
刪除
skip-grant
[root@test01 ~]# /etc/init.d/mysqld restart 重啓
[root@test01 ~]# mysql -uroot -pchampin 從新登陸
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 9
Server version: 10.3.12-MariaDB MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]>
MariaDB [(none)]> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
MariaDB [mysql]> select user,host from user; 咱們能夠看一下有不少用戶
+---------+-----------+
| user | host |
+---------+-----------+
| bbs | 127.0.0.1 |
| blogtop | 127.0.0.1 |
| root | 127.0.0.1 |
| root | ::1 |
| | localhost |
| root | localhost |
| | test01 |
| root | test01 |
+---------+-----------+
8 rows in set (0.000 sec)
4.57 MariaDB慢查詢日誌
MariaDB [(none)]> show variables like 'slow%'; 查看它的slow相關的
+---------------------+-----------------+
| Variable_name | Value |
+---------------------+-----------------+
| slow_launch_time | 2 |
| slow_query_log | OFF |
| slow_query_log_file | test01-slow.log |
+---------------------+-----------------+
3 rows in set (0.002 sec)
MariaDB [(none)]> show variables like 'datadir';查看它的datadir
+---------------+--------------+
| Variable_name | Value |
+---------------+--------------+
| datadir | /data/mysql/ |
+---------------+--------------+
1 row in set (0.003 sec)
MariaDB [(none)]> show variables like 'long%'; 查看它的超時時間
+-----------------+-----------+
| Variable_name | Value |
+-----------------+-----------+
| long_query_time | 10.000000 |
+-----------------+-----------+
1 row in set (0.004 sec)
MariaDB [(none)]> Bye
[root@test01 ~]# vi /etc/my.cnf
增長以下
slow_query_log = ON
slow_query_log_file = /data/mysql/test01-slow.log
long_query_time = 2
[root@test01 ~]# /etc/init.d/mysqld restart
Restarting mysqld (via systemctl): [ 肯定 ]
[root@test01 ~]# mysql -uroot -pchampin 進入MariaDB裏面
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 9
Server version: 10.3.12-MariaDB-log MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> select sleep(5); 模擬慢查詢
+----------+
| sleep(5) |
+----------+
| 0 |
+----------+
1 row in set (5.001 sec)
MariaDB [(none)]> Bye
[root@test01 ~]# cat /data/mysql/t
tc.log test/ test01.pid test01-slow.log
[root@test01 ~]# cat /data/mysql/test01-slow.log 查看慢查詢日誌
/usr/local/mysql/bin/mysqld, Version: 10.3.12-MariaDB-log (MariaDB Server). started with:
Tcp port: 0 Unix socket: /tmp/mysql.sock
Time Id Command Argument
# Time: 190311 23:12:52
# User@Host: root[root] @ localhost []
# Thread_id: 9 Schema: QC_hit: No
# Query_time: 5.000687 Lock_time: 0.000000 Rows_sent: 1 Rows_examined: 0
# Rows_affected: 0 Bytes_sent: 63
SET timestamp=1552317172;
select sleep(5);
擴展
[root@test01 ~]# mysql -uroot -pchampin
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 10.3.12-MariaDB-log MariaDB Server
Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> show processlist; 查看全部的隊列（跟查看全部的進程一個道理）
+----+-------------+-----------+------+---------+------+--------------------------+------------------+----------+
| Id | User | Host | db | Command | Time | State | Info | Progress |
+----+-------------+-----------+------+---------+------+--------------------------+------------------+----------+
| 1 | system user | | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 |
| 2 | system user | | NULL | Daemon | NULL | InnoDB purge coordinator | NULL | 0.000 |
| 3 | system user | | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 |
| 4 | system user | | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 |
| 5 | system user | | NULL | Daemon | NULL | InnoDB shutdown handler | NULL | 0.000 |
| 10 | root | localhost | NULL | Query | 0 | Init | show processlist | 0.000 |
+----+-------------+-----------+------+---------+------+--------------------------+------------------+----------+
6 rows in set (0.001 sec)
MariaDB [(none)]> show rull processlist; 顯示完整的語句
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'rull processlist' at line 1
MariaDB [(none)]> show full processlist;
+----+-------------+-----------+------+---------+------+--------------------------+-----------------------+----------+
| Id | User | Host | db | Command | Time | State | Info | Progress |
+----+-------------+-----------+------+---------+------+--------------------------+-----------------------+----------+
| 1 | system user | | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 |
| 2 | system user | | NULL | Daemon | NULL | InnoDB purge coordinator | NULL | 0.000 |
| 3 | system user | | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 |
| 4 | system user | | NULL | Daemon | NULL | InnoDB purge worker | NULL | 0.000 |
| 5 | system user | | NULL | Daemon | NULL | InnoDB shutdown handler | NULL | 0.000 |
| 10 | root | localhost | NULL | Query | 0 | Init | show full processlist | 0.000 |
+----+-------------+-----------+------+---------+------+--------------------------+-----------------------+----------+
6 rows in set (0.000 sec)
4.58 Tomcat_JDK部署
[root@test01 ~]# yum install -y java-1.8.0-openj
[root@test01 ~]# cd /usr/local/src/
[root@test01 src]# wget http://mirror.bit.edu.cn/apache/tomcat/tomcat-9/v9.0.16/bin/apache-tomcat-9.0.16.tar.gz
[root@test01 src]# ls
apache-tomcat-9.0.16.tar.gz nginx-1.14.2
apache-tomcat-9.0.16.tar.gz.1 nginx-1.14.2.tar.gz
mariadb-10.3.12-linux-x86_64.tar.gz php-7.3.1
mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz php-7.3.1.tar.bz2
[root@test01 src]# tar zxf apache-tomcat-9.0.16.tar.gz
[root@test01 src]# ls
apache-tomcat-9.0.16 mariadb-10.3.12-linux-x86_64.tar.gz nginx-1.14.2.tar.gz
apache-tomcat-9.0.16.tar.gz mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz php-7.3.1
apache-tomcat-9.0.16.tar.gz.1 nginx-1.14.2 php-7.3.1.tar.bz2
[root@test01 src]# mv apache-tomcat-9.0.16 /usr/local/tomcat
[root@test01 src]# /usr/local/tomcat/bin/startup.sh 啓動Tomcat
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME: /usr
Using CLASSPATH: /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.
[root@test01 src]# ps aux |grep java 查看進程
root 7340 10.9 7.8 2289972 78204 pts/3 Sl 23:39 0:03 /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Dignore.endorsed.dirs= -classpath /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/local/tomcat/temp org.apache.catalina.startup.Bootstrap start
root 7356 0.0 0.0 112728 976 pts/3 R+ 23:39 0:00 grep --color=auto java
[root@test01 src]# netstat -ltnp |grep java 查看監聽端口，有3個端口
8080爲WEB端口
8005 shutdown（管理端口）
8009 AJP端口（第三方的應用鏈接這個接口，和Tomcat結合起來）
tcp6 0 0 :::8080 :::* LISTEN 7340/java
tcp6 0 0 127.0.0.1:8005 :::* LISTEN 7340/java
tcp6 0 0 :::8009 :::* LISTEN 7340/java
4.59 安裝zrlog
[root@test01 src]# cd
[root@test01 ~]# wget http://dl.zrlog.com/release/zrlog-2.1.0-3617b2e-release.war?attname=ROOT.war&ref=index
[root@test01 ~]# ls
11.txt 2.txt anaconda-ks.cfg startingup.sh
1.txt 3.txt DiscuzX zrlog-2.1.0-3617b2e-release.war?attname=ROOT.war
[root@test01 ~]# du -sh zrlog-2.1.0-3617b2e-release.war\?attname\=ROOT.war 也屬於一種壓縮包
不用管怎麼解壓，至於要放到某個目錄下就能夠，會自動解壓
9.9M zrlog-2.1.0-3617b2e-release.war?attname=ROOT.war
[root@test01 ~]# mv zrlog-2.1.0.war /usr/local/tomcat/webapps/
[root@test01 ~]# cd !$
cd /usr/local/tomcat/webapps/
[root@test01 webapps]# ls
docs examples host-manager manager ROOT zrlog-2.1.0 zrlog-2.1.0.war
[root@test01 webapps]# mv zrlog-2.1.0 zrlog 改個名字，不須要帶版本號了。由於等訪問的時候要帶目錄
[root@test01 webapps]# ls
docs examples host-manager manager ROOT zrlog zrlog-2.1.0.war
用瀏覽器訪問tomcat默認界面 192.168.28.107:8080 若是不能訪問，檢查是否是防火牆阻攔了8080
[root@test01 webapps]# iptables -nvL |grep 8080 檢查有沒有8080端口，結果沒有
[root@test01 webapps]# firewall-cmd --add-port=8080/tcp --permanent 添加防火牆規則，8080端口
success
[root@test01 webapps]# firewall-cmd --reload 還要重載一下
success
而後再用瀏覽器訪問tomcat默認界面 192.168.28.107:8080
要想訪問zrlog,這樣192.168.28.107:8080/zrlog
也就是說zrlog在/usr/local/tomcat/webapps這個目錄 訪問8080實際訪問的是/usr/local/tomcat/webapps這個目錄
下面這兩步不太建議作。訪問不了tomcat默認主頁
[root@test01 webapps]# mv ROOT ROOT.bak
[root@test01 webapps]# mv zrlog ROOT
[root@test01 webapps]# mysql -uroot -pchampin -e "create database zrlog" 建立庫
[root@test01 webapps]# mysql -uroot -pchampin -e "grant all on zrlog.* to 'zrlog'@'127.0.0.1'identified by 'champin'" 建立用戶及密碼
瀏覽器訪問192.168.28.107:8080/zrlog
填入數據庫，安裝完成
4.60 Nginx代理Tomcat
[root@test01 webapps]# cd /etc/nginx/conf.d/
[root@test01 conf.d]# ls
2.conf bbs.champin.top.conf default.conf www.champin.top.conf
[root@test01 conf.d]# vi z.champinlinux.cc.conf
server {
server_name z.chamlinux.cc;
location /
{
proxy_pass http://127.0.0.1:8080;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
[root@test01 conf.d]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@test01 conf.d]# nginx -s reload
仍是由於是本機測試，要再windows綁定一個hosts 去ping一下 z.chamlinux.cc
而後在用瀏覽器訪問z.chamlinux.cc去訪問,能夠去裏面作一些細節的設置
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