Paste the fingerprint that you copied in step 1 into the Fingerprint text-box, then click the Import Key button. Launchpad will use the fingerprint to check the Ubuntu key server for your key and, if successful, send you an encrypted email asking you to confirm the key import. (Note : this is a brief ... from launchpad process..... both process take a while so just take your time...)
For a beginner, feeling lost when you’re studying a performance issue can be discouraging. This feeling, too, is normal: you will feel lost, you will make mistakes, and you will often be wrong.
Quoting Niels Bohr, a Danish physicist:
An expert is a person who has made all the mistakes that can be made in a very narrow field.
By telling you stories like this one, I hope to reassure you that mistakes and wrong turns are normal (even for the best of us) and to show you some techniques and methodologies to help you find your way.”
Brendan，Gregg. “Systems Performance: Enterprise and the Cloud.” Pearson Education, 2013-10-07。
特別注意的是我這邊沒有特別對網路做設定，根據 Documentation ，TCP, UDP可以運作，但ICMP 不會。我實際測試的結果確實是如此。(Note - if you are using the (default) SLiRP user networking, then ping (ICMP) will not work, though TCP and UDP will. Don't try to use ping to test your QEMU network configuration!)
pacman -S avahi nss-mdns Installs the Avahi services daemon and the Multicast DNS resolver.
nano /etc/nsswitch.conf This file tells the C library how to obtain name-service information.
Change the line hosts: files dns myhostname to hosts: files mdns_minimal [NOTFOUND=return] dns myhostname, save and exit.
systemctl start avahi-daemon Starts the Avahi service manually since we're already booted.look for errors)
systemctl enable avahi-daemon Enables the Avahi service on boot.
vagrant@vagrant-ubuntu-trusty-64:~$ sudo samba-tool domain provision --use-rfc2307 --interactive
Realm: mysamba.test.io
Domain [mysamba]:
Server Role (dc, member, standalone) [dc]:
DNS backend (SAMBA_INTERNAL, BIND9_FLATFILE, BIND9_DLZ, NONE) [SAMBA_INTERNAL]:
DNS forwarder IP address (write 'none' to disable forwarding) [192.168.1.253]: 192.168.1.253
Administrator password:
Retype password:
Looking up IPv4 addresses
More than one IPv4 address found. Using 192.168.1.2
Looking up IPv6 addresses
No IPv6 address will be assigned
Setting up secrets.ldb
Setting up the registry
Setting up the privileges database
Setting up idmap db
Setting up SAM db
Setting up sam.ldb partitions and settings
Setting up sam.ldb rootDSE
Pre-loading the Samba 4 and AD schema
Adding DomainDN: DC=mysamba,DC=test,DC=io
Adding configuration container
Setting up sam.ldb schema
Setting up sam.ldb configuration data
Setting up display specifiers
Modifying display specifiers
Adding users container
Modifying users container
Adding computers container
Modifying computers container
Setting up sam.ldb data
Setting up well known security principals
Setting up sam.ldb users and groups
Setting up self join
Adding DNS accounts
Creating CN=MicrosoftDNS,CN=System,DC=mysamba,DC=test,DC=io
Creating DomainDnsZones and ForestDnsZones partitions
Populating DomainDnsZones and ForestDnsZones partitions
Setting up sam.ldb rootDSE marking as synchronized
Fixing provision GUIDs
A Kerberos configuration suitable for Samba 4 has been generated at /var/lib/samba/private/krb5.conf
Setting up fake yp server settings
Once the above files are installed, your Samba4 server will be ready to use
Server Role: active directory domain controller
Hostname: vagrant-ubuntu-trusty-64
NetBIOS Domain: MYSAMBA
DNS Domain: mysamba.test.io
DOMAIN SID: S-1-5-21-711469164-2329730621-2401598146
