Automatic expansion based on ETCD plus Saltstack

[[email protected] ~]# Vim/etc/salt/master =============> at the bottom of the configuration file, add the following content

Etcd_pillar_config:

etcd.host:10.0.0.7

etcd.port:4001

Ext_pillar:

-Etcd:etcd_pillar_config root=/salt/haproxy/

[Email protected] ~]#/etc/init.d/salt-master restart

Stopping salt-master daemon: [OK]

Starting Salt-master daemon: [OK]

Set a key here:

[Email protected] ~]# curl-s http://10.0.0.7:2379/v2/keys/salt/haproxy/backend_www_oldboyedu_com/web-node1-XPUT-d Value= "10.0.0.7:8080" | Python-m Json.tool

{

"Action": "Set",

"Node": {

"Createdindex": 15,

"Key": "/salt/haproxy/backend_www_oldboyedu_com/web-node1",

"Modifiedindex": 15,

"Value": "10.0.0.7:8080"

}

}

Get key:

[[email protected] ~]# Salt ' * ' Pillar.items

Linux-node1.example.com:

----------

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Linux-node2.example.com:

----------

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Not available here:

To view logs:

[Email protected] ~]# Tailf/var/log/salt/master

Commandexecutionerror: (Unable to import ETCD, module most likely not installed) cannot import ETCD, need to install a dependency package

[[email protected] ~]# Yum install python-pip-y need to be installed Python-pip

[[Email protected] ~]# pip install PYTHON-ETCD install ETCD software

[[email protected] ~]# Salt ' * ' Pillar.items

Linux-node1.example.com:

----------

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Linux-node2.example.com:

----------

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Here you get the value:

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

[Email protected] ~]# vim/srv/salt/prod/cluster/files/haproxy-outside.cfg

At the bottom of the configuration file, add:

{% for web,web_ip in Pillar.backend_www_oldboyedu_com.iteritems ()-%}

server {{web}} {{web_ip}} Check inter 15 rise fall

{% ENDFOR%}

[[email protected] ~]# Vim/srv/salt/prod/cluster/haproxy-outside.sls ====================> designated as Jinja template in the file

-Template:jinja

After modifying, execute the Advanced module:

[[email protected] ~]# Salt ' * ' state.highstate

[[email protected] ~]# Salt ' * ' Pillar.items

Linux-node2.example.com:

----------

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Linux-node1.example.com:

----------

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Two nodes have been obtained the key value:

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Example:

[Email protected] ~]# curl-s http://10.0.0.7:2379/v2/keys/salt/haproxy/backend_www_oldboyedu_com/web-node2-XPUT-d Value= "10.0.0.7:8080" | Python-m Json.tool

{

"Action": "Set",

"Node": {

"Createdindex": 16,

"Key": "/salt/haproxy/backend_www_oldboyedu_com/web-node2",

"Modifiedindex": 16,

"Value": "10.0.0.7:8080"

}

}

[Email protected] ~]# curl-s http://10.0.0.7:2379/v2/keys/salt/haproxy/backend_www_oldboyedu_com/web-node3-XPUT-d Value= "10.0.0.7:8080" | Python-m Json.tool

{

"Action": "Set",

"Node": {

"Createdindex": 17,

"Key": "/salt/haproxy/backend_www_oldboyedu_com/web-node3",

"Modifiedindex": 17,

"Value": "10.0.0.7:8080"

}

}

[Email protected] ~]# curl-s http://10.0.0.7:2379/v2/keys/salt/haproxy/backend_www_oldboyedu_com/web-node4-XPUT-d Value= "10.0.0.7:8080" | Python-m Json.tool

{

"Action": "Set",

"Node": {

"Createdindex": 18,

"Key": "/salt/haproxy/backend_www_oldboyedu_com/web-node4",

"Modifiedindex": 18,

"Value": "10.0.0.7:8080"

}

}

[Email protected] ~]# curl-s http://10.0.0.7:2379/v2/keys/salt/haproxy/backend_www_oldboyedu_com/web-node5-XPUT-d Value= "10.0.0.7:8080" | Python-m Json.tool

{

"Action": "Set",

"Node": {

"Createdindex": 19,

"Key": "/salt/haproxy/backend_www_oldboyedu_com/web-node5",

"Modifiedindex": 19,

"Value": "10.0.0.7:8080"

}

}

[Email protected] ~]# curl-s Http://10.0.0.7:2379/v2/keys/salt/haproxy/backend_www_oldboyedu_com/web-node55-XPUT- D value= "10.0.0.7:8080" | Python-m Json.tool

{

"Action": "Set",

"Node": {

"Createdindex": 34,

"Key": "/salt/haproxy/backend_www_oldboyedu_com/web-node55",

"Modifiedindex": 34,

"Value": "10.0.0.7:8080"

}

}

[[email protected] ~]# Salt ' * ' state.highstate =================> perform advanced status

Review the obtained values again:

[[email protected] ~]# Salt ' * ' Pillar.items

Linux-node1.example.com:

----------

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Web-node2:

10.0.0.7:8080

WEB-NODE3:

10.0.0.7:8080

WEB-NODE4:

10.0.0.7:8080

WEB-NODE5:

10.0.0.7:8080

Web-node55:

10.0.0.7:8080

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

Linux-node2.example.com:

----------

Backend_www_oldboyedu_com:

----------

Web-node1:

10.0.0.7:8080

Web-node2:

10.0.0.7:8080

WEB-NODE3:

10.0.0.7:8080

WEB-NODE4:

10.0.0.7:8080

WEB-NODE5:

10.0.0.7:8080

Web-node55:

10.0.0.7:8080

Zabbix-agent:

----------

Zabbix_server:

10.0.0.7

At this point in the browser to see that n nodes have been added

Old boy Website: http://www.etiantian.org

qq:406564728

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This article is from the "Linux" blog, so be sure to keep this source http://chenjisong.blog.51cto.com/7858025/1714340

Automatic expansion based on ETCD plus Saltstack