Haproxy+kept cluster setup 02

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Preface

Installation mode ： Custom installation
Server environment ：Centos7.5
haproxy edition ：2.5.7
keepalived edition ：2.0.20

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1 install haproxy

1.1 download

HAProxy The official download address is : https://www.haproxy.org/#down, If this site is inaccessible , You can also get it from hkps:/src.fedoraproject.org/repo/pkgs/haproxy/ Download from . What I download here is 2.5.7 edition , Download it and go through xftp And other tools upload the compressed package to the server /usr/app/ Under the table of contents , among app Folders need to be created in advance , Then decompress ：

cd /usr/local
tar -zxvf haproxy-2.5.7.tar.gz 

1.2 Installation dependency

yum -y install make gcc gcc-c++ libpcre3-dev openssl libssl-dev zlib1g-dev

1.3 compile

cd /usr/local/haproxy-2.5.7
make TARGET=3100 ARCH=x86_64 PREFIX=/usr/local/haproxy
make install TARGET=3100 ARCH=x86_64 PREFIX=/usr/local/haproxy

1.4 Create a directory of configuration files

mkdir -p /usr/local/haproxy/conf
mkdir -p /etc/haproxy/

1.5 Add configuration file soft connection

touch /usr/local/haproxy/conf/haproxy.cfg
ln -s /usr/local/haproxy/conf/haproxy.cfg /etc/haproxy/haproxy.cfg

1.6 Copy the error page and add directory soft connection （HTTP Matching mode ）

cp -r /usr/local/haproxy-2.5.7/examples/errorfiles /usr/local/haproxy/
ln -s /usr/local/haproxy/errorfiles /etc/haproxy/errorfiles

1.7 Copy the startup file and authorize

cp /usr/local/haproxy-2.5.7/examples/haproxy.init /etc/init.d/haproxy
chmod +x /etc/init.d/haproxy

1.8 add to haproxy Command script soft link

ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin

1.9 Set up HAProxy Boot up

chkconfig --add haproxy
chkconfig haproxy on

1.10 add to haproxy User groups and users and create chroot Running path

HAProxy The configuration file has specified users and user groups , as well as chroot Running path ：

groupadd haproxy
useradd -g haproxy haproxy
mkdir /usr/share/haproxy

1.11 haproxy The configuration file

vi /usr/local/haproxy/conf/haproxy.cfg

The contents of the configuration file are as follows ：

global
    log 127.0.0.1    local0
    chroot /usr/share/haproxy
    group    haproxy
    user    haproxy
    daemon
    maxconn 4096
    node    edu-haproxy-01
    description    edu-haproxy-01
defaults
    mode                    http
    log                     global
    option                  httplog
    option                  dontlognull
    option http-server-close
    option forwardfor       except 127.0.0.0/8
    option                  redispatch
    retries                 3
    timeout http-request    10s
    timeout queue           1m
    timeout connect         10s
    timeout client          1m
    timeout server          1m
    timeout http-keep-alive 10s
    timeout check           10s
    maxconn                 3000
listen stats
        bind          0.0.0.0:8000
        mode          http
        stats         enable
        stats         hide-version
        stats uri     /haproxystats
        stats realm   Haproxy\stats
        stats auth    admin:admin
        stats admin   if TRUE

frontend http-in
        bind 0.0.0.0:5672
        mode tcp
        log global
        option httplog
        option httpclose
        default_backend rabbitmq-server

backend rabbitmq-server
        mode tcp
        balance roundrobin
        server  rabbitmq-node1 192.168.45.201:5672 maxconn 2000 weight 1  check inter 5s rise 2 fall 2
        server  rabbitmq-node2 192.168.45.202:5672 maxconn 2000 weight 1  check inter 5s rise 2 fall 2
        server  rabbitmq-node3 192.168.45.203:5672 maxconn 2000 weight 1  check inter 5s rise 2 fall 2

2 install rsyslog The log service

2.1 install

yum -y install rsyslog

2.2 To configure

vi /etc/rsyslog.conf

# Provides UDP syslog reception
#  Open the following configuration 
$ModLoad imudp
$UDPServerRun 514

# Provides TCP syslog reception
#  Open the following configuration 
$ModLoad imtcp
$InputTCPServerRun 514

2.3 Add configuration file

stay /etc/rsyslog.d/ Create under directory haproxy Log profile for haproxy.log

vi /etc/rsyslog.d/haproxy.log

Add the configuration as follows ：

local0.* /var/log/haproxy.log
&~

2.4 restart rsyslog service

systemctl restart rsyslog.service

3、 Open port

Need reference haproxy Configuration file in “/usr/local/haproxy/conf/haproxy.cfg”, You can open which ports are used in this file ; I've used... Here 8000 and 5672 port ;

#  View firewall status , If the firewall is not turned on , Then you need to turn on the firewall first 
firewall-cmd --state
#  Turn on the firewall 
systemctl start firewalld.service
# View open ports 
firewall-cmd --list-ports
# Open the specified port 
firewall-cmd --zone=public --add-port=8000/tcp --permanent
firewall-cmd --zone=public --add-port=5672/tcp --permanent
systemctl restart firewalld.service
firewall-cmd --reload

4、 Turn on haproxy And verify

systemctl start haproxy
systemctl status haproxy

Manage background address ：http://192.168.45.191:8000/haproxystats
account number ：admin
password ：admin

5、 install keepalived( Customize )

Follow the above steps to install two haproxy：
haproxy-01：192.168.45.191
haproxy-02：192.168.45.192
Plan to configure virtual ip：192.168.45.190

5.1 Download and unzip

Download address ：https://www.keepalived.org/download.html

cd /usr/local/
tar -zxvf keepalived-2.0.20.tar.gz 

5.2 Installation dependency

yum -y install openssl-devel libnl libnl-devel

5.3 Compilation and installation

cd keepalived-2.0.20/
./configure --prefix=/usr/local/keepalived
make && make install

The following file path will be generated after compilation and installation ：
/usr/local/etc/keepalived/keepalived.conf
/usr/local/etc/sysconfig/keepalived
/usr/local/sbin/keepalived

5.4 To configure

# keepalived Startup script variable reference file , The default file path is /etc/sysconfig/, Also can not do soft link , Directly modify the file path in the startup script （ Installation directory ）
cp /usr/local/keepalived/etc/sysconfig/keepalived  /etc/sysconfig/keepalived 
 
#  take keepalived The main program is added to the environment variable （ Installation directory ）
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/keepalived
 
# keepalived The startup script （ Source directory ）, Put it in /etc/init.d/ It can be used in the directory service Command is easy to call 
cp /usr/local/keepalived-2.0.20/keepalived/etc/init.d/keepalived  /etc/init.d/keepalived
 
#  take keepalived Put the configuration file in the default path 
mkdir /etc/keepalived
touch /etc/keepalived/keepalived.conf

haproxy-01 Of keepalived.conf The contents of the configuration file are as follows ：

! Configuration File for keepalived

global_defs {
    
   router_id director1
}
vrrp_script check_haproxy {
    
   script "/etc/keepalived/haproxy_chk.sh"
   interval 5
}

vrrp_instance VI_1 {
    
    state MASTER
    interface ens33
    virtual_router_id 80
    priority 100
    advert_int 1
    authentication {
    
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
    
        192.168.45.190
    }
    track_script {
    
        check_haproxy
    }
}

haproxy-02 Of keepalived.conf The contents of the configuration file are as follows ：

! Configuration File for keepalived

global_defs {
    
   router_id director2
}
vrrp_script check_haproxy {
    
   script "/etc/keepalived/haproxy_chk.sh"
   interval 5
}

vrrp_instance VI_1 {
    
    state BACKUP
    interface ens33
    virtual_router_id 80
    priority 50
    advert_int 1
    authentication {
    
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
    
        192.168.45.190
    }
    track_script {
    
        check_haproxy
    }
}

5.5 Set boot up

#  Add as system service 
chkconfig –-add keepalived
#  Set boot up 
chkconfig keepalived on
#  start-up 、 close 、 restart 、 see  keepalived 
systemctl starts keepalived 
systemctl stop keepalived 
systemctl restart keepalived 
systemctl status keepalived 

6、 verification keepalived