iRule for combination of FQDN pool member and route domains
I'm trying to configure an FQDN pool member for consuming a web service. The FQDN changes it's IP addreses resolution periodically. I configured the pool member inside its non-default Partition and Route Domain. That means the pool member is not in the default 'Common' partition and not in the default route domain '0'. As soon as I created the FQDN pool member, I noticed that the dynamically created node, created as a result of the FQDN resolution IP, was assigned the default route domain '0'. I opened a case with support to get some clarification on this and got the following response: "Unfortunately, Route domains are not supported with fqdn. We have logged in a Request For Enhancement, this, however, has no release date as of yet. 522465 RFE: Route domain support for FQDN nodes The most I can offer you is to request that this service request be added to that RFE. This will let our product development team that another customer is requesting this. Please let me know if you are interested in this." After doing some research I found the following iRules on Codeshare: https://devcentral.f5.com/s/articles/dynamic-ephemeral-node-fqdn-resolution-with-route-domains-with-dns-caching-irule-1148 https://devcentral.f5.com/s/question/0D51T00006j3E1I/fqdn-node-with-route-domains I've tried both iRules on versions 12.1.2 and 14.1.2, but am getting different TCL errors. Has anyone been able to get the combination of FQDN pool members with a non-default route domain?
Configure on ASM - IIS Virtual Host Website
I have to configure an IIS Virtual Host Website on ASM. The website gives error when accessed over IP of the server On ASM I created a new Node with FQDN. Created a Pool with port number and then virtual server. But when I access the virtual server IP, it is giving the same error which I get if I try to access the website using webserver's IP
Load Balance to FQDN Not Working
Hi All, I have an environment that is set up on my F5 using a combination of Rewrite Profiles and iRules to achieve a reverse proxy setup. This works well. I have a request to add an additional rewrite mapping but this time they want it to load balance to a FQDN in the cloud. The F5 is set up for DNS and I can add an FQDN pool which populates the ephemeral nodes, but these show down and I can never get them to come up despite DNS resolving them correctly. I have the URL rule added to the existing rewrite profile (client: /api/search/ server: /search/ and then an iRule that states: elseif { [string tolower [HTTP::uri]] starts_with "/api/search" } { pool ProxyPass_Pool_4 But I can't get the FQDN pool to function. What am I missing? Thanks!
Possible to specify FQDN for new node address via iControl and Powershell?
Product : Virtual BigIP LTM ProductVersion : 11.6.0 PackageVersion : Build 5.13.429 - Thu Jul 23 16:58:10 PDT 2015 PackageEdition : Engineering Hotfix HF5 Hi, Working on an automated solution. I am able to successfully create new nodes using iControl SnapIn and PS. However, the API only allows me to use IP addresses when creating the nodes, and not a fqdn (when I try it throws invalidargument exception). The author of the snapin also says an IP address is required. Here is a snippet of the powershell code I use: This provides all of the cmdlets we need Add-PSSnapin iControlSnapin Initialize-F5.iControl -Hostname $LTMName -Username $LTMUserName -Password $LTMPassword (Get-F5.iControl).LocalLBNodeAddressV2.create(@($NodeName),@($NodeAddress),@(0)) I thought about changing it after it is created, but the API documentation states "...A set_address method is not supported." Any idea on how to accomplish this via iControl? Will I be forced to use a different solution? Thanks, pimy
Monitoring ephemeral pool members & nodes
Hi, I'm looking to use the dynamic FQDN resolution for nodes / pool members, but have a few queries... If an Ephemeral pool member goes down, does that failure trigger anything on the DNS / Node side? Immediate resolution in case the result has changed etc.? Resolution appears to be wholly at the node level, suggesting the health of the pool member is irrelevant, and always limited to the IP's returned periodically by the DNS lookup attached to the node - and "DNS monitoring" merely means a resolution occured. The documentation about "auto populate" is confusing me. What is the real life difference between Enabled and Disabled? I see that when Disabled, the very first result is always used, however it still creates the Ephemeral node, it's still done periodically etc., so the only meaningful difference seems to be if more than one A is returned at a time. There's reference to Enabled removing members that are no longer being returned, but isn't that already implicitly true for Disabled? If that one result changes, then the pool member will change accordingly. Is it really any more meaningful than "Disabled = ignore additional results, Enabled = create nodes for all answers."? What would it mean for a node to auto populate, but a pool member using that node to NOT be set to do that? I see we only get a single pool member, but multiple nodes... but what is the consequence of this? Is there a reason this would be found useful? How does the node resolution internal work with the DNS Cache option in the system settings? The reoslution does use these settings, right? Would it make sense to set the resolution low ~ 5 seconds and enable caching on LTM, meaning that the name would be resolved almost as soon as the TTL expires on the record, thereby falling out of the cache? Could this be seen as a realistic best practise, or are there dragons hiding around here? Setting node resolution at an arbitrary hour interval as per default seems very dangerous to me. Thanks!
fqdn Pool member as IP VS in the same device or in the same 1 IP management or same box
Hii Everyone, I have a VS, snat automap, and using fqdn member that resolve dns in IP (10.1.1.x). Can I using the fqdn member (10.1.1.x), as IP VS in the same box or same ip management?? it can works ? If can'nt, what is the reason ?? Thankyouu so much ....Hostname based Load balancing (prior to 11.6.0)
Problem this snippet solves: This code is initially developed to provide a forward proxy to Apple Push Notification Services. This code can easily be customized to load balance requests to any resolved FQDN. Several issues are solved here : Forward proxy for several Apple APNs services like gateway.push.apple.com and feedback.push.apple.com Hostname based loadbalancing for BIG-IP under version 11.6.0 Source address persistence using tables (because when using the node command, persistence settings doesn't works) How to use this snippet: Installation This irule can be installed on multiple VS at the same time or on a wilcard VS. During several tests, we configured the following Virtual Server settings : ltm virtual vs_wildcard_apns { description *.push.apple.com destination 192.168.20.200:any ip-protocol tcp mask 255.255.255.255 profiles { fastL4 { } } rules { irule_apns } source 0.0.0.0/0 source-address-translation { type automap } translate-address enabled translate-port disabled vs-index 9 } Code : when RULE_INIT { set static::nameserver "8.8.8.8" set static::max_age 1800 } when CLIENT_ACCEPTED { switch [TCP::local_port] { "2195" { set host "gateway.push.apple.com" } "2196" { set host "feedback.push.apple.com" } default { log local0. "virtual=[virtual], src=[IP::client_addr], dst=$dest:[TCP::local_port], action=reject, reason=\"Request not allowed\"" reject return } } # resolve the hostname using table or dns lookup if { [table lookup "$host.[IP::client_addr]"] ne "" } { set dest [table lookup "$host.[IP::client_addr]"] log local0. "virtual=[virtual], src=[IP::client_addr], dst=$dest:[TCP::local_port], action=resolve, reason=\"from table\"" node $dest [TCP::local_port] } else { set dest [lindex [RESOLV::lookup @$static::nameserver -a $host] 0] log local0. "virtual=[virtual], src=[IP::client_addr], dst=$dest:[TCP::local_port], action=resolve, reason=\"from dns\"" if { $dest ne "" } { table set "$host.[IP::client_addr]" "$dest" indefinite $static::max_age node $dest [TCP::local_port] log local0. "virtual=[virtual], src=[IP::client_addr], dst=$dest:[TCP::local_port], action=forward" } else { log local0. "virtual=[virtual], src=[IP::client_addr], dst=$dest:[TCP::local_port], action=reject, reason=\"DNS resolution failed\"" reject return } } } when CLIENT_CLOSED { table delete conn:[IP::client_addr]:[TCP::client_port] } Tested this on version: 11.3Keep subdomain in FQDN node
Hi all, im trying to setup a node in the F5 which goes out to an external site using the FQDN. The issue im having is the F5 doesnt route to the full FQDN with the subdomain. For example, im trying to reach tlstest.paypal.com. However when i put that as the address of the node in the F5, it simply puts the IP and therefor the navigation doesnt work properly. Any thoughts on how to keep the tlstest part in the node? Im thinking a possible iRule is needed but dont know that for sure. Thanks for any and all replies.
Can I reconfigure application to use FQDNs of servers instead of IPs?
I've noticed that if I go in to my Application Services > Applications > [My App] > Reconfigure > I am not able to add the servers next to "Pool: Members" by FQDN. It seems it will only accept IP addresses. If I try to edit the pool by going to Local Traffic > Pools > [My Pool] > Members > I am not able to edit the pool in this menu, it says: 010715bc:3: The application service (/Common/DNS-Internal-VS.app/DNS-Internal-VS) has strict updates enabled, the object (Pool /Common/DNS-Internal-VS.app/DNS-Internal-Pool) must be updated using an application management interface. Is strict updates something that I can disable? Or do I have to edit the application using the first method and not use FQDNs?