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This article mainly explains "how to build haproxy service in LINUX". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how to build haproxy service in LINUX".

one。 Service topology diagram

two。 Configuration step

Step 1: create a local yum source and install the necessary helper programs

Step 2: extract and compile and install the haproxy package

Step 3: configure the haproxy service

Step 4: test the haproxy service

three。 Command configuration

Step 1: create a local yum source and install the necessary helper programs

# cat / etc/yum.repos.d/local.repo / / create a local yum source file

# rpm-Q pcre-devel bzip2-deve / / query whether to install pcre-devel and bzip2-devel

# yum-y install pcre-devel bzip2-devel / / if not installed, use yum to complete the installation

Step 2: extract and compile and install the haproxy package

# tar xf haproxy-1.4.24.tar.gz / / extract the haproxy package

# cd haproxy-1.4.24 / / enter the directory of decompressed files

# make TARGET=linux26 / / compile according to the kernel version

# make install / / install the haproxy program

Step 3: configure the haproxy service

# mkdir / etc/haproxy / / create a haproxy directory under etc

# cp examples//haproxy.cfg / etc/haproxy/ copy the haproxy main configuration file to the created path

# vim / etc/haproxy/haproxy.cfg / / Edit the main configuration file

# this config needs haproxy-1.1.28 or haproxy-1.2.1

Global

Log 127.0.0.1 local0 / / log output configuration, all logs are recorded locally and output through local0

Log 127.0.0.1 local1 notice / / defines the haproxy log level [error warringinfo debug]

# log loghost local0 info

Maxconn 4096 / / default maximum number of connections, ulimit-n limit should be considered

Uid 99 / / run haproxy, user UID

Gid 99 / / run haproxy, user group GID

Daemon

# debug / / haproxy debugging level. It is recommended to debug only when a single process is started.

# quiet

Defaults

Log global

Mode http / / default mode mode {tcp | http | health}

Option httplog / / log category, using httplog

Option dontlognull / / does not record health check log information

Retries 3 / / if the connection fails three times, the server is considered unavailable, or you can set it later.

Maxconn 2000 / / default maximum number of connections

Contimeout 5000 / / connection timeout

Clitimeout 50000 / / client timeout

Srvtimeout 50000 / / Server timeout

Listen admin_stats

Bind 0.0.0.0 Backend 1080 / / set the combination of Frontend and Backend, the name of the monitoring group, as needed

Custom name

7-tier model of mode http / / http

Option httplog / / uses http log format

# log 127.0.0.1 local0 err / / error logging

Maxconn 10 / / default maximum connections

Stats refresh 30s / / automatic refresh time of statistics page

Stats uri / stats / / Statistics page url

Prompt text on the password box of stats realm XingCloud\ Haproxy / / Statistics Page

Stats auth admin:admin / / set the user and password of the monitoring page: admin, you can set multiple user names

Stats auth Frank:Frank / / set the user and password of the monitoring page: Frank

Stats hide-version / / hides the version information of HAProxy on the statistics page

Stats admin if TRUE

Listen test1

Bind 0.0.0.0:80

Option httpchk GET / index.html / / specify webpage wood

Balance roundrobin / / the default load balancing method is polling

Server app1_1 192.168.3.2 fall 80 check inter 2000 fall 3 / / add service hosts, set detection constraints

Server app1_2 192.168.3.3:80 check inter 2000 fall 3

# cp ~ / haproxy-1.4.24/examples/haproxy.init / etc/init.d/haproxy / / copy the haproxy boot file to startup

Project record

# ln-s / usr/local/sbin/haproxy / usr/sbin/haproxy / / create a soft connection to the startup script file

# chmod + x / etc/init.d/haproxy / / give executable permissions to startup files

# cd / etc/init.d/ enter the startup directory

#. / haproxy start / / start the haproxy service

Install the web test server

Using the client, type the haproxy server ip to complete the test

four。 Build haproxy+keepalived Service 4.1 Topology Diagram

4.2 configuration steps

Step 1: create a local yum source and install the necessary helper programs

Step 2: extract and compile and install the haproxy package

Step 3: configure the haproxy service

Step 4: test the haproxy service

4.3 Command configuration

Step 1: create a local yum source and install the necessary helper programs

# cat / etc/yum.repos.d/local.repo / / create a local yum source file

# rpm-Q pcre-devel bzip2-deve / / query whether to install pcre-devel and bzip2-devel

# yum-y install pcre-devel bzip2-devel / / if not installed, use yum to complete the installation

Step 2: extract and compile and install the haproxy package

# tar xf haproxy-1.4.24.tar.gz / / extract the haproxy package

# cd haproxy-1.4.24 / / enter the directory of decompressed files

# make TARGET=linux26 / / compile according to the kernel version

# make install / / install the haproxy program

Step 3: configure the haproxy service

# mkdir / etc/haproxy / / create a haproxy directory under etc

# cp examples//haproxy.cfg / etc/haproxy/ copy the haproxy main configuration file to the created path

# vim / etc/haproxy/haproxy.cfg / / Edit the main configuration file

# this config needs haproxy-1.1.28 or haproxy-1.2.1

Global

Log 127.0.0.1 local0 / / log output configuration, all logs are recorded locally and output through local0

Log 127.0.0.1 local1 notice / / defines the haproxy log level [error warringinfo debug]

# log loghost local0 info / /

Maxconn 4096 / / default maximum number of connections, ulimit-n limit should be considered

Uid 99 / / run haproxy, user UID

Gid 99 / / run haproxy, user group GID

Daemon

# debug / / haproxy debugging level. It is recommended to debug only when a single process is started.

# quiet

Defaults

Log global

Mode http / / default mode mode {tcp | http | health}

Option httplog / / log category, using httplog

Option dontlognull / / does not record health check log information

Retries 3 / / if the connection fails three times, the server is considered unavailable, or you can set it later.

Maxconn 2000 / / default maximum number of connections

Contimeout 5000 / / connection timeout

Clitimeout 50000 / / client timeout

Srvtimeout 50000 / / Server timeout

Listen admin_stats

Bind 0.0.0.0 Backend 1080 / / set the combination of Frontend and Backend, the name of the monitoring group, as needed

Custom name

7-tier model of mode http / / http

Option httplog / / uses http log format

# log 127.0.0.1 local0 err / / error logging

Maxconn 10 / / default maximum connections

Stats refresh 30s / / automatic refresh time of statistics page

Stats uri / stats / / Statistics page url

Prompt text on the password box of stats realm XingCloud\ Haproxy / / Statistics Page

Stats auth admin:admin / / set the user and password of the monitoring page: admin, you can set multiple user names

Stats auth Frank:Frank / / set the user and password of the monitoring page: Frank

Stats hide-version / / hides the version information of HAProxy on the statistics page

Stats admin if TRUE

Listen test1

Bind 0.0.0.0:80

Option httpchk GET / index.html / / specify webpage wood

Balance roundrobin / / the default load balancing method is polling

Server app1_1 192.168.3.2 fall 80 check inter 2000 fall 3 / / add service hosts, set detection constraints

Server app1_2 192.168.3.3:80 check inter 2000 fall 3

# cp ~ / haproxy-1.4.24/examples/haproxy.init / etc/init.d/haproxy / / copy the haproxy boot file to startup

Project record

# ln-s / usr/local/sbin/haproxy / usr/sbin/haproxy / / create a soft connection to the startup script file

# chmod + x / etc/init.d/haproxy / / give executable permissions to startup files

# cd / etc/init.d/ enter the startup directory

#. / haproxy start / / start the haproxy service

4.4 install web Test Server

Specific configuration steps of keepalived

Step 1: create a local yum source and install the necessary helper programs

Step 2: extract and compile and install the keepalived package

Step 3: configure the keepalived service

Step 4: test the keepalived service

Step 1: create a local yum source and install the necessary helper programs

# mkdir / media/cdrom

# mkdir / etc/yum.repo.d/a

# mv / etc/yum.repo.d/Cent* / etc/yum.repo.d/a

# mount / dev/cdrom / media/cdrom

# vim / etc/yum.repo.d/local.repo

[base]

Name=cets

Baseurl= file:///media/cdrom

Enabled=1

Gpgcheck=0

# yum-y install openssl-devel

# yum-y install popt-devel

Step 2: extract and compile and install the keepalived package

# tar zxf keepalived-1.2.13.tar.gz

# cd keepalived-1.2.13

#. / configure-prefix=/-- with-kernel-dir=/usr/src/kernels/2.6.32-431.el6.x86_64 / / compile to specify the installation path

# make & & make install /

Step 3: configure the keepalived master server

# cd / etc/keepalived/ enter the home directory of keepalived software

# cp keepalived.conf keepalived.conf.bak / / back up the keepalived main configuration file

# vim keepalived.conf / / Edit keepalived main configuration file

Router_id R1 / / name the keepalived host

State MASTER / / the keepalived host type is dominant

Priority 100 / / priority 100

Virtual_ipaddress {

192.168.1.254} / / Virtual ip address

# service keepalived restart / / restart the service

# service iptables stop / / turn off the firewall

# service network restart / / restart the Nic

Step 4: configure the keepalived slave server

Router_id R2 / / name keepalived slave server

State BACKUP / / designated as backup server

Priority 99 / / priority 99

Thank you for reading, the above is the content of "how to build haproxy service in LINUX". After the study of this article, I believe you have a deeper understanding of how to build haproxy service in LINUX, and the specific usage needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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