在SmartOS中,也有類似Linux的init.d的service架構,透過這部分的設定,系統可以在重新啓動的時候,自動帶入服務,也可以在異常crash的狀態下自動將服務帶起來,下面範例展示如何將自建的服務加入SMF中。
1. 下載SMF Manifest範例
wget --no-check-certificate http://github.com/isaacs/joyent-node-on-smart-example/raw/master/node-hello-world-service-manifest.xml
範例截取如下:
<!-- node-hello-world-service-manifest.xml -->
<?xml version="1.0"?>
<!DOCTYPE service_bundle SYSTEM "/usr/share/lib/xml/dtd/service_bundle.dtd.1">
<service_bundle type="manifest" name="simon-test-service">
<service name="site/simon-test-service" type="service" version="1">
<create_default_instance enabled="true"/>
<single_instance/>
<dependency name="network" grouping="require_all" restart_on="refresh"
type="service">
<service_fmri value="svc:/milestone/network:default"/>
</dependency>
<dependency name="filesystem" grouping="require_all" restart_on="refresh"
type="service">
<service_fmri value="svc:/system/filesystem/local"/>
</dependency>
<method_context working_directory="/root/simon-test">
<method_credential user="root" group="root" privileges=”basic,net_privaddr” />
<method_environment>
<envvar name="PATH"
value="/opt/node/bin:/usr/local/bin:/usr/bin:/usr/sbin:/bin"/>
<envvar name="HOME" value="/root"/>
</method_environment>
</method_context>
<exec_method
type="method"
name="start"
exec="/opt/node/bin/node /root/simon-test/app.js"
timeout_seconds="60"/>
<exec_method
type="method"
name="stop"
exec=":kill"
timeout_seconds="60"/>
<property_group name="startd" type="framework">
<propval name="duration" type="astring" value="child"/>
<propval name="ignore_error" type="astring" value="core,signal"/>
</property_group>
<property_group name="application" type="application">
</property_group>
<stability value="Evolving"/>
<template>
<common_name>
<loctext xml:lang="C">node.js simon-test service</loctext>
</common_name>
</template>
</service>
</service_bundle>
2. 匯入SMF
svccfg import node-hello-world-service-manifest.xml
3. 檢視匯入服務狀態
[root@MiCloudGW01 ~]# svcs -a | grep simon-test
disabled 2:26:46 svc:/site/simon-test-service:default
4. 啓動服務
[root@MiCloudGW01 ~]# svcadm enable simon-test-service
[root@MiCloudGW01 ~]# svcs -a | grep simon-test
online 2:34:04 svc:/site/simon-test-service:default
5. 關閉服務
[root@MiCloudGW01 ~]# svcadm disable simon-test-service
[root@MiCloudGW01 ~]# svcs -a | grep simon-test
disabled 2:34:48 svc:/site/simon-test-service:default
6. 檢視服務LOG記錄
# tail -f `svcs -L simon-test`
PS: svcs -L [service name] 將顯示記錄檔所在位置
7. 檢視其他人的manifest怎麼寫的
[root@MiCloudGW01 ~]# svccfg export mysql
<?xml version='1.0'?>
<!DOCTYPE service_bundle SYSTEM '/usr/share/lib/xml/dtd/service_bundle.dtd.1'>
<service_bundle type='manifest' name='export'>
<service name='network/mysql' type='service' version='0'>
<create_default_instance enabled='true'/>
<single_instance/>
<dependency name='fs' grouping='require_all' restart_on='none' type='service'>
<service_fmri value='svc:/system/filesystem/local'/>
</dependency>
<dependency name='net' grouping='require_all' restart_on='none' type='service'>
<service_fmri value='svc:/network/loopback'/>
</dependency>
<method_context working_directory='/var/mysql'>
<method_credential group='mysql' user='mysql'/>
<method_environment>
<envvar name='LD_PRELOAD_32' value='/usr/lib/extendedFILE.so.1'/>
</method_environment>
</method_context>
<exec_method name='start' type='method' exec='/opt/local/share/smf/mysql-server/method start' timeout_seconds='18446744073709551615'/>
<exec_method name='stop' type='method' exec='/opt/local/share/smf/mysql-server/method stop' timeout_seconds='18446744073709551615'/>
<stability value='Evolving'/>
<template>
<common_name>
<loctext xml:lang='C'>MySQL RDBMS</loctext>
</common_name>
<documentation>
<manpage title='MySQL 5.5' section='1'/>
<doc_link name='mysql.com' uri='http://dev.mysql.com/docs'/>
</documentation>
</template>
</service>
</service_bundle>
8. 刪除已匯入的SMF
# svccfg delete simon-test-service
9. 其它進階功能,請參考svccfg man page
# man svccfg
Reference: