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1. Re: what is nonce for
It's an unique identifier of the apache instance IMHO to prevent accindental actions being executed on the wrong balancer.
You can disable the check if you wish to: Chapter 3. httpd configuration
Also, you don't need to do it programatically and just use JBoss AS 7 / WildFly CLI to send those commands.
See the section in the MCMP: https://community.jboss.org/wiki/Mod-ClusterManagementProtocol
The ID is the one passed on links on the mod_cluster-manager handler page.
HTH,
Rado
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2. Re: what is nonce for
thank you for your reply.
I am actually integrating Catalyst (perl mvc framework) with mod_cluster via mcmp, so i don't have any jboss tools. i also have another use case, where our internal monitoring system would require to call mod_cluster-manager to request information about deployed applications, and their statuses. i do realize that i can disable nonce check, and that is what i am doing right now, however i would like not to disable it, and teach our monitoring app on how to get it, that is if nonce is necessary... i also do not wish to scrape nonce from main manager page (which i did do also, before i discovered CheckNonce option).
thank you
Roman.
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3. Re: what is nonce for
1 of 1 people found this helpfulAnyway, there is probably little reason to send commands to mod_cluster manager page, rather send commands over to virtual host where you normally send MCMP requests. IIUC, there isn't any extra operation that cannot be done this way. The page itself is designed for human interaction.
Note that the demo attached also parses the HTML for the query to simulate administrator interaction with the page.
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4. Re: what is nonce for
Thank you Rado,
i've missed that there are DUMP and INFO methods in MCMP, must of been looking at the docs for too long , for this thread here are usage samples via curl
curl -X INFO 'http://127.0.0.1:6666'
Output:
Node: [1],Name: barJvmRoute,Balancer: barBalancer,LBGroup: barDomain,Host: 127.0.0.1,Port: 3000,Type: http,Flushpackets: Off,Flushwait: 10,Ping: 5,Smax: 1,Ttl: 60,Elected: 0,Read: 0,Transfered: 0,Connected: 0,Load: 99
Node: [2],Name: barJvmRoute1,Balancer: barBalancer,LBGroup: barDomain1,Host: 127.0.0.1,Port: 3000,Type: http,Flushpackets: Off,Flushwait: 10,Ping: 5,Smax: 1,Ttl: 60,Elected: 0,Read: 0,Transfered: 0,Connected: 0,Load: 99
Node: [3],Name: barJvmRoute2,Balancer: barBalancer,LBGroup: barDomain2,Host: 127.0.0.1,Port: 3000,Type: http,Flushpackets: Off,Flushwait: 10,Ping: 5,Smax: 1,Ttl: 60,Elected: 0,Read: 0,Transfered: 0,Connected: 0,Load: 99
Node: [4],Name: barJvmRoute3,Balancer: barBalancer,LBGroup: barDomain3,Host: 127.0.0.1,Port: 3000,Type: http,Flushpackets: Off,Flushwait: 10,Ping: 5,Smax: 1,Ttl: 60,Elected: 0,Read: 0,Transfered: 0,Connected: 0,Load: 99
Node: [5],Name: barJvmRoute4,Balancer: barBalancer,LBGroup: barDomain4,Host: 127.0.0.1,Port: 3000,Type: http,Flushpackets: Off,Flushwait: 10,Ping: 5,Smax: 1,Ttl: 60,Elected: 0,Read: 0,Transfered: 0,Connected: 0,Load: 99
Vhost: [1:1:1], Alias: barAlias
Vhost: [2:1:2], Alias: barAlias1
Vhost: [3:1:3], Alias: barAlias2
Vhost: [4:1:4], Alias: barAlias3
Vhost: [5:1:5], Alias: barAlias4
Context: [1:1:1], Context: /bar, Status: ENABLED
Context: [1:1:2], Context: /cluster, Status: ENABLED
Context: [2:1:3], Context: /bar, Status: STOPPED
Context: [2:1:4], Context: /cluster, Status: ENABLED
Context: [3:1:5], Context: /bar, Status: STOPPED
Context: [3:1:6], Context: /cluster, Status: ENABLED
Context: [4:1:7], Context: /bar, Status: STOPPED
Context: [4:1:8], Context: /cluster, Status: ENABLED
Context: [5:1:9], Context: /bar, Status: STOPPED
Context: [5:1:10], Context: /cluster, Status: ENABLED
curl -X DUMP 'http://127.0.0.1:6666'
Output:
balancer: [1] Name: barBalancer Sticky: 1 [JSESSIONID]/[/cluster] remove: 0 force: 1 Timeout: 0 maxAttempts: 1
node: [1:1],Balancer: barBalancer,JVMRoute: barJvmRoute,LBGroup: [barDomain],Host: 127.0.0.1,Port: 3000,Type: http,flushpackets: 0,flushwait: 10,ping: 5,smax: 1,ttl: 60,timeout: 0
node: [2:2],Balancer: barBalancer,JVMRoute: barJvmRoute1,LBGroup: [barDomain1],Host: 127.0.0.1,Port: 3000,Type: http,flushpackets: 0,flushwait: 10,ping: 5,smax: 1,ttl: 60,timeout: 0
node: [3:3],Balancer: barBalancer,JVMRoute: barJvmRoute2,LBGroup: [barDomain2],Host: 127.0.0.1,Port: 3000,Type: http,flushpackets: 0,flushwait: 10,ping: 5,smax: 1,ttl: 60,timeout: 0
node: [4:4],Balancer: barBalancer,JVMRoute: barJvmRoute3,LBGroup: [barDomain3],Host: 127.0.0.1,Port: 3000,Type: http,flushpackets: 0,flushwait: 10,ping: 5,smax: 1,ttl: 60,timeout: 0
node: [5:5],Balancer: barBalancer,JVMRoute: barJvmRoute4,LBGroup: [barDomain4],Host: 127.0.0.1,Port: 3000,Type: http,flushpackets: 0,flushwait: 10,ping: 5,smax: 1,ttl: 60,timeout: 0
host: 1 [barAlias] vhost: 1 node: 1
host: 2 [barAlias1] vhost: 1 node: 2
host: 3 [barAlias2] vhost: 1 node: 3
host: 4 [barAlias3] vhost: 1 node: 4
host: 5 [barAlias4] vhost: 1 node: 5
context: 1 [/bar] vhost: 1 node: 1 status: 1
context: 2 [/cluster] vhost: 1 node: 1 status: 1
context: 3 [/bar] vhost: 1 node: 2 status: 3
context: 4 [/cluster] vhost: 1 node: 2 status: 1
context: 5 [/bar] vhost: 1 node: 3 status: 3
context: 6 [/cluster] vhost: 1 node: 3 status: 1
context: 7 [/bar] vhost: 1 node: 4 status: 3
context: 8 [/cluster] vhost: 1 node: 4 status: 1
context: 9 [/bar] vhost: 1 node: 5 status: 3
context: 10 [/cluster] vhost: 1 node: 5 status: 1
apache configuration for Vhost on port 6666:
Listen 127.0.0.1:6666
Maxsessionid 10
PersistSlots On
CheckNonce Off
<VirtualHost 127.0.0.1:6666>
<Directory />
Order deny,allow
Deny from all
Allow from all
</Directory>
EnableMCPMReceive
ServerAdvertise On
KeepAliveTimeout 60
MaxKeepAliveRequests 0
ManagerBalancerName mycluster
AdvertiseFrequency 1
AdvertiseGroup 224.0.1.105:23364
</VirtualHost>
thank you
Roman.
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