teketeke_55の日記

技術メモとか

chef knifeコマンド めも

chef

knifeコマンドのめも

  • sshオプション

自動的にsshでログインしてコマンドを叩けるオプション。管理サーバからリモートホストへまとめてコマンドを叩けるので便利。

webサーバにchef-clientを実行。

knife ssh "hostname:web*" -x user "sudo chef-client" -i /home/user/.ssh/id_rsa


hostnameにマッチするディスク容量調べてみたり。

knife ssh "hostname:web*" -x srvadm "df -h" -i /home/user/.ssh/id_rsa
# knife ssh "os_version:*" -x user "df -h" -i /home/user/.ssh/id_rsa
 web01 Filesystem            Size  Used Avail Use% Mounted on
 web0 /dev/mapper/VolGroup00-LogVol00
 web01                        39G   22G   16G  60% /
 web01 /dev/sda1             244M   27M  204M  12% /boot
 web01 tmpfs                 3.9G     0  3.9G   0% /dev/shm
 web02   Filesystem            Size  Used Avail Use% Mounted on
 web02   /dev/mapper/VolGroup00-LogVol00
 web02                          39G   10G   27G  28% /
 web02   /dev/sda1             244M   27M  204M  12% /boot
 web02   tmpfs                 3.9G     0  3.9G   0% /dev/shm


QUERYはattributeからマッチしているようなのでこんな感じでも使える。

 knife ssh "platform:centos" -x user "sudo yum update　-y" -i /home/user/.ssh/id_rsa

platformがcentosだけyum update。

  • オプションの一覧
# knife ssh -h
knife ssh QUERY COMMAND (options)
   -a, --attribute ATTR             The attribute to use for opening the connection - default is fqdn
   -s, --server-url URL             Chef Server URL
   -k, --key KEY                    API Client Key
       --[no-]color                 Use colored output, defaults to enabled
   -C, --concurrency NUM            The number of concurrent connections
   -c, --config CONFIG              The configuration file to use
       --defaults                   Accept default values for all questions
   -d, --disable-editing            Do not open EDITOR, just accept the data as is
   -e, --editor EDITOR              Set the editor to use for interactive commands
   -E, --environment ENVIRONMENT    Set the Chef environment
   -F, --format FORMAT              Which format to use for output
       --[no-]host-key-verify       Verify host key, enabled by default.
   -i IDENTITY_FILE                 The SSH identity file used for authentication
       --identity-file
   -m, --manual-list                QUERY is a space separated list of servers
   -u, --user USER                  API Client Username
       --print-after                Show the data after a destructive operation
   -G, --ssh-gateway GATEWAY        The ssh gateway
   -P, --ssh-password PASSWORD      The ssh password
   -p, --ssh-port PORT              The ssh port
   -x, --ssh-user USERNAME          The ssh username
   -V, --verbose                    More verbose output. Use twice for max verbosity
   -v, --version                    Show chef version
   -y, --yes                        Say yes to all prompts for confirmation
   -h, --help                       Show this message

公式のマニュアルはこちら
http://wiki.opscode.com/display/chef/Knife+Built+In+Subcommands