Server For Mac Mavericks

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Mavericks (OS X 10.9) is here! And just as with Lion (OS X 10.7) and Mountain Lion (OS X 10.8) before it, getting Mavericks is as easy as downloading an installer from the Mac App Store. I have installed Mac OSX Mavericks Server and I would like to add some features to the Apache Server (gitolite, redmine, etc.) I've started with updating the httpdserverapp.conf file in /Library/.

Yesterday we looked at setting up an Open Directory Master in OS X Mountain Lion Server. An Open Directory Replica keeps a copy of the Open Directory database available for users even when the Master goes offline. But it can also take a part of the load from the Open Directory Master and when using the new Locales feature, balance network traffic. To get started with an Open Directory Replica, first enable SSH, now disabled by default. Next, use the changeip to check the host name. While the Server app is cool, it caches stuff and I’ve seen it let things go threat shouldn’t be let go. Therefore, in order to make sure that the server has such an address, I still recommend using changeip, but I also recommend using the Server application. In Mountain Lion, I’ve seen each find things that other misses. To use changeip:

Server For Mac Mavericks Mojave

sudo changeip -checkhostname The address and host names should look correct and match what you see in the Server application’s Next Steps drawer. Primary address = 10.0.0.1 Current HostName = odr.pretendco.lan DNS HostName = pretendco.lan The names match. There is nothing to change. dirserv:success = “success” Provided everything is cool with the hostname, use the slapconfig command to preflight a replica prior to promotion. The syntax there is the same as the -createreplica syntax, used as follows, assuming the master has an IP address of 172.16.2.23: /usr/sbin/slapconfig -preflightreplica 172.16.2.23 diradmin Provided that the server is ready, open the Server app on a freshly installed computer you want to be your Open Directory replica. Then, click on the Open Directory service. Then, use the ON button to start the configuration process. When prompted, click on “Join an existing Open Directory domain as a replica” and click on the Next button. When prompted, enter the parent Open Directory server’s host name (likely the name of the Open Directory Master), directory admin user name (the diradmin or custom username provided when Open Directory was configured), and then the directory admin password. Then click on the Next button again to setup the services. At the Confirm settings screen, click on the Set Up button and the replica is completed provided there are no issues with the configuration. Check Server app on both the Replica and the Master and verify that the server is displayed under the Master. Once you’ve created your first replica, you can then start to define replica trees, where each replica looks at one above it, which then looks at another. I’ll do another article later on replica trees.

Note: If there are any problems during promotion, I start over every time using slapconfig along with the -destroyldapserver option to nuke everything in OD:sudo slapconfig -destroyldapserver Use the logs to help if you’re having replica creation problems. These can be added using the -enableslapdlog option: slapconfig -enableslapdlog You can use the -addreplica option to add replicas manually while running tail on the slapd logs: tail -f /var/log/slapd.log

Once the replica has been created, you can add more and more until you exceed 32. At that point, you have a fairly large Open Directory environment and you go to add the 33rd replica but you get a funny error that dserr doesn’t have listed. The reason is likely that a single Open Directory Master can only have 32 replicas – and the fact that you’ve made it that far means you get a cookie. Cookie or no, you can have 32 replicas on each replica (thus having a replica tree), ergo allowing for a total of 1,024 replicas and a master. So rather than bind that 33rd replica to a master, move to a replica tree model, trying to offload replicas in as geographically friendly a fashion as possible (thus reducing slap traffic on your WAN links) by repositioning replicas per site. Similar to how Active Directory infrastructures often have a global catalog at each site, if you’ve got a large number of Open Directory Replicas then you should likely try and limit the number that connects back to each master per site to 1. Assuming that each replica can sustain a good 350 clients on a bad day (and we always plan for bad days), even the largest pure Mac OS X deployments will have plenty of LDAP servers to authenticate to. However, you’re likely going to have issues with clients being able to tell which Open Directory server is the most appropriate to authenticate through. Therefore, cn=config will need to be customized per group that leverages each replica, or divert rules used with ipfw to act as a traffic cop. Overall, the replica trees seem to be working fairly well in Snow Leopard, netting a fairly scalable infrastructure for providing LDAP services. You can also get pretty granular with the slurpd (the daemon that manages Open Directory replication) logs by invoking slurpd with a -d option followed by a number from 4 to 65535, with intensity of logs getting more as the number gets higher. You can also use the -r option to indicate a specific log file. If you have more than 32 replicas then it stands to reason that you also have a large number of objects in Open Directory, a fair amount of change occurring to said objects and therefore a fair amount of replication IO. In order to offload this you can move your replication temp directory onto SSD drives, by specifying the -t option when invoking slurpd. The slurpd replication occurs over port 389 (by default). Therefore, in a larger environment you should be giving priority to network traffic. If you choose to custom make/install slurpd then you’ll also need to go ahead and build your Kerberos principles manually. In this case you would get a srvtab file for the slurpd server and then configure slapd to accept Kerberos Authentication for slaves. Having said this, I haven’t seen an environment where I had to configure slurpd in this fashion.

Content caching speeds up the Apple software downloads that are distributed over the Internet. Content caching stores local copies of the software on your Mac, so the downloads are faster for connected clients.

Content types supported by the caching service

macOS includes built-in support for caching the following software.

macOS

• macOS updates and Internet Recovery images (macOS 10.13.5 or later)*
  
• Apps and app updates from the Mac App Store
• GarageBand downloadable content
• iCloud data caching (photos and documents)
• Apple Books content
• Xcode downloadable components such as simulators (Xcode 10.2 or later)

Mac Os Mavericks App Store

iOS 7 and later and Apple TV

• iOS updates (over the air)
• Apple TV updates (over the air)
• Apple TV screensavers (tvOS 12.2 or later)
• iOS apps, Apple TV apps, and app updates
• On-demand resources support for iOS 10 and later and tvOS 10 and later.
• iCloud data caching (photos and documents) for iOS 9 and later
• iTunes U course materials from the iOS App Store and Apple Books, as well as uploaded instructor materials such as audio, video, iWork, and iBooks Author files
• Apple Books content
• Certain mobile assets, such as Siri high quality voices, language dictionaries, and more

Country and region restrictions

• Not all content is cached in all regions.
• As of December 2013, iTunes downloads are not cached in Brazil, Mexico, China mainland, or Portugal. Apple Books downloads are not cached in Canada.
• When macOS content caching is enabled, the IP address and region of a Mac computer are registered with Apple. To cache iTunes and App Store content, the registered region of the macOS content cache must match the region of the client Apple ID accounts.

Learn more

Server For Mac Mavericks Mac

Learn more about content caching.

*After starting up from macOS Recovery over the Internet, clients can use the cached image to install macOS and take other actions in Recovery.