Login problem after installing and activating OS X Server app in Yosemite

Question

After installing and activating file sharing on OS X Server on my MacBook Air, the MBA was restarted. At the login screen I enter my password into my account and it directs me to a 'Guest' login screen, asking for a password which I did not create.
HELP!!!!!

Answer 1

There is no longer any provision for starting a PostgreSQL process other than the ones reserved for built-in services. Create a launch daemon with content such as the following:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<dict>
     <key>Label</key>
     <string>org.postgresql.postgres</string>
     <key>UserName</key>
     <string>_postgres</string>
     <key>GroupName</key>
     <string>_postgres</string>
     <key>ProgramArguments</key>
     <array>
          <string>/Applications/Server.app/Contents/ServerRoot/usr/bin/postgres</string>
          <string>--apple-configuration</string>
          <string>/Library/Server/PostgreSQL/Config/org.postgresql.postgres.plist</string>
     </array>
     <key>KeepAlive</key>
     <dict>
          <key>PathState</key>
          <dict>
               <key>/Library/Server/PostgreSQL/Data</key>
               <true/>
          </dict>
     </dict>
     <key>StandardErrorPath</key>
     <string>/Library/Logs/PostgreSQL/PostgreSQL.log</string>
     <key>StandardOutPath</key>
     <string>/Library/Logs/PostgreSQL/PostgreSQL.log</string>
</dict>
</plist>
<plist version="1.0">
Also create these directories and files, owned by _postgres:_postgres:
/Library/Logs/PostgreSQL
/Library/Server/PostgreSQL
/Library/Server/PostgreSQL/Backup
/Library/Server/PostgreSQL/Config
/Library/Server/PostgreSQL/Config/org.postgresql.postgres.plist
/Library/Server/PostgreSQL/Data
Finally, initialize the database with a suitable invocation of initdb(1).
For more details, see the PostgreSQL documentation. You may find it easier to use a packaged third-party distribution independent of the built-in one.