pclose sse 環境 warning ext 正常 keep owin 自帶

【環境介紹】

系統環境：Red Hat Enterprise Linux 7 + 5.7.18 + MHA version 0.57

MHA架構中從庫之間的負責均衡可選擇mysql_route&keepalived+lvs&haproxy+keepalived&proxy中間件來實現，這裏簡單使用haproxy來實現

備庫：192.168.142.112 192.168.142.113 這裏設置192.168.142.113為haproxy配置主機

【搭建步驟：軟件部署】

　　系統軟件安裝：

在一個從庫或者在另一臺主機上安裝即可：直接使用系統自帶的haproxy安裝，yum install haproxy

mysql數據庫用戶創建： 用於haproxy檢測數據庫狀態，註意不要設置該用戶的密碼： mysql> create user haproxy_check@‘192.168.142.%‘;
Query OK, 0 rows affected (0.13 sec) mysql> grant usage on *.* to haproxy_check@‘192.168.142.%‘;
Query OK, 0 rows affected (0.01 sec) 設置haproxy配置文件： cat >haproxy.cfg
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
# http://haproxy.1wt.eu/download/1.4/doc/configuration.txt
#
#--------------------------------------------------------------------- #---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events. This is done
# by adding the ‘-r‘ option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
log 127.0.0.1 local0 notice
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy #---------------------------------------------------------------------
# common defaults that all the ‘listen‘ and ‘backend‘ sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
log global
retries 3
option dontlognull
option redispatch
maxconn 2000
timeout connect 3000
timeout server 5000
timeout client 5000 #---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
listen mysql-mha
bind 192.168.142.113:4040
mode tcp
option mysql-check user haproxy_check
balance roundrobin
server mysql_mha2 192.168.142.112:33061 weight 1 check
server mysql_mha3 192.168.142.113:33061 weight 1 check #---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
listen stats *:8888
mode http
option httpclose
balance roundrobin
stats uri /
stats realm Haproxy\ Statistics
stats auth myadmin:myadmin 檢查配置文件是否有問題 haproxy -f /etc/haproxy/haproxy.cfg -c 輸出：Configuration file is valid為正常 設置日誌路徑配置： cat /etc/rsyslog.d/49-haproxy.conf
# Create an additional socket in haproxy‘s chroot in order to allow logging via
# /dev/log to chroot‘ed HAProxy processes
$AddUnixListenSocket /var/lib/haproxy/dev/log
$ModLoad imudp
$UDPServerRun 514
local3.* /var/log/haproxy.log
# Send HAProxy messages to a dedicated logfile
if $programname startswith ‘haproxy‘ then /var/log/haproxy.log
&~ 設置完成之後，重新系統日誌進程 service rsyslog restart 【啟動haproxy進程】 啟動haproxy進程 service haproxy start 查看進程狀態及日誌信息 service haproxy status
Redirecting to /bin/systemctl status haproxy.service
haproxy.service - HAProxy Load Balancer
Loaded: loaded (/usr/lib/systemd/system/haproxy.service; disabled)
Active: active (running) since 一 2018-06-11 15:53:09 CST; 35s ago
Main PID: 10512 (haproxy-systemd)
CGroup: /system.slice/haproxy.service
├─10512 /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
├─10513 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds
└─10514 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds 6月 11 15:53:09 mysqldb2 systemd[1]: Starting HAProxy Load Balancer...
6月 11 15:53:09 mysqldb2 systemd[1]: Started HAProxy Load Balancer. tail -f /var/log/haproxy.log Jun 11 15:53:09 localhost haproxy[10513]: Proxy mysql-mha started.
Jun 11 15:53:09 localhost haproxy[10513]: Proxy stats started. ps -ef |grep haproxy
root 10512 1 0 15:53 ? 00:00:00 /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid
haproxy 10513 10512 0 15:53 ? 00:00:00 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds
haproxy 10514 10513 0 15:53 ? 00:00:00 /usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg -p /run/haproxy.pid -Ds
root 10609 62609 0 15:53 pts/0 00:00:00 tail -f /var/log/haproxy.log
root 10809 62956 0 15:54 pts/5 00:00:00 grep --color=auto haproxy
netstat -nltp|grep haproxy
tcp 0 0 192.168.142.113:4040 0.0.0.0:* LISTEN 10513/haproxy
tcp 0 0 0.0.0.0:8888 0.0.0.0:* LISTEN 10513/haproxy 【負載均衡測試】 通過192.168.142.113 4040端口訪問數據庫，每次執行都訪問不同的數據庫即可 mysql -ubackup -pbackup -h192.168.142.113 -P4040 -e "select @@hostname";
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| mysqldb1 |
+------------+
mysql -ubackup -pbackup -h192.168.142.113 -P4040 -e "select @@hostname";
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| mysqldb2 |
+------------+
mysql -ubackup -pbackup -h192.168.142.113 -P4040 -e "select @@hostname";
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| mysqldb1 |
+------------+
mysql -ubackup -pbackup -h192.168.142.113 -P4040 -e "select @@hostname";
mysql: [Warning] Using a password on the command line interface can be insecure.
+------------+
| @@hostname |
+------------+
| mysqldb2 |
+------------+ 【進程web監控】 訪問：http://192.168.142.113:8888/haproxyadmin?stats 用戶密碼為配置文件中的：myadmin/myadmin

mysql MHA擴展haproxy搭建從庫只讀負載均衡