== setup/integrate a new machine ==

Note: this is partially obsolete now that we have [[puppet-setup|puppet]].  We should probably update/rework some parts.

* install ssh if it isn't there already
{{{
    apt-get install ssh
}}}

* make apt sane
{{{
    echo 'Acquire::PDiffs "false";' > /etc/apt/apt.conf.d/local-pdiff
    echo 'APT::Install-Recommends 0;' > /etc/apt/apt.conf.d/local-recommends
}}}

* sane locales:

 make sure there is _no_ locale defined in /etc/environment and /etc/default/locale

* make debconf the same on every host: - dialog, - high
{{{
    dpkg-reconfigure debconf
}}}

* add db.d.o to sources.list:
{{{
    cat > /etc/apt/sources.list.d/debian.org.list << EOF
deb     http://db.debian.org/debian-admin lenny main
deb-src http://db.debian.org/debian-admin lenny main
EOF

    apt-key add - << EOF
-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.6 (GNU/Linux)
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=+jlJ
-----END PGP PUBLIC KEY BLOCK-----
EOF
}}}

* in /etc/ssh/sshd_config:
** disable the DSA hostkey, so that it only does RSA
** remove old host keys: <BR>{{{
    cd /etc/ssh/ && rm ssh_host_dsa_key ssh_host_dsa_key.pub ssh_host_key ssh_host_key.pub
}}}
** disable X11 forwarding
** Tell it to use alternate authorized_keys locations
{{{
    | HostKey /etc/ssh/ssh_host_rsa_key
    | X11Forwarding no
    | AuthorizedKeysFile /etc/ssh/userkeys/%u
    | AuthorizedKeysFile2 /var/lib/misc/userkeys/%u

    vi /etc/ssh/sshd_config
    (cd / && env -i /etc/init.d/ssh restart)
}}}

  * maybe link root's auth key there:
{{{
    mkdir -p /etc/ssh/userkeys && ln -s /root/.ssh/authorized_keys /etc/ssh/userkeys/root
}}}


* install userdir-ldap
{{{
    apt-get update && apt-get install userdir-ldap
}}}


* on samosa, add the host to /home/sshdist/.ssh/authorized_keys and generate.conf
(you want the host's rsa host key there: {{{cat /etc/ssh/ssh_host_rsa_key.pub}}})
{{{
    :: samosa :: && sudo vi /home/sshdist/.ssh/authorized_keys
    :: samosa :: && sudo vi /etc/userdir-ldap/generate.conf
}}}
* run generate, or wait until cron runs it for you
{{{
    :: samosa :: && sudo -u sshdist ud-generate
}}}

* fix nsswitch for ud fu.
{{{
    sed -i -e 's/^passwd:[[:space:]]\+compat$/passwd:         compat db/;
              s/^group:[[:space:]]\+compat$/group:           db compat/;
              s/^shadow:[[:space:]]\+compat$/shadow:         compat db/' \
        /etc/nsswitch.conf
}}}

(you might have to restart sshd here:
{{{
    (cd / && env -i /etc/init.d/ssh restart)
}}}
)

* on the host, run ud-replicate
{{{
    mkdir -p /root/.ssh &&
    echo db,db.debian.org,192.25.206.57 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAIEAph3LozYmcwHwgnxfKia1lg1AXNuJiEroi/GpPztbcqxmFOYBZbMgYDj+kM+usoXF2diT9OQWqg1yx19CeEoghHYz4/yZa0PYdLgPj9Si4PScekVaE051GrLM63osfK0j3wIfpgLJv2/zs42NbXjkKPdjInEaWPn8W1fe88M3JDE= root@newsamosa >> /root/.ssh/known_hosts &&
    ud-replicate
}}}

* check if it worked:
{{{
    id weasel
}}}

* add pam_mkhomedir to common-session:
{{{
    grep pam_mkhomedir /etc/pam.d/common-session || \
    echo "session optional        pam_mkhomedir.so skel=/etc/skel umask=0022" >> /etc/pam.d/common-session
}}}

* install debian.org which brings you shells and much other fun
{{{
    apt-get install debian.org
}}}

* try to login using your user and ssh key.  you should get a homedir.

* make ca-certificates sane:  (choose to *not* trust new certs, and we only want the spi cert activated)
{{{
    sed -i -e 's/^[^#!].*/!&/; s#^!spi-inc.org/spi-cacert-2008.crt#spi-inc.org/spi-cacert-2008.crt#' /etc/ca-certificates.conf
    dpkg-reconfigure ca-certificates
}}}

* exim setup:
{{{
    :: now obsolete :: &&
    apt-get install git-core curl &&
    ! [ -d /etc/exim4.bak ] &&
    /etc/init.d/exim4 stop &&
    mv /etc/exim4 /etc/exim4.bak &&
    mkdir /etc/exim4 &&
    cd /etc/exim4 &&
    git clone https://db.debian.org/git/dsa-exim.git Git &&
    ./Git/bin/update &&
    (cd / && /etc/init.d/exim4 start)
}}}
 ** Add debian-admin@debian.org to root in /etc/aliases

* sane default editor
{{{
    apt-get install vim && update-alternatives --set editor /usr/bin/vim.basic
}}}

* setup sudo
{{{
    grep '^%adm' /etc/sudoers || echo '%adm    ALL=(ALL) ALL' >> /etc/sudoers
    grep '^%adm.*apt-get' /etc/sudoers || echo '%adm    ALL=(ALL) NOPASSWD: /usr/bin/apt-get update, /usr/bin/apt-get dist-upgrade, /usr/bin/apt-get clean, /usr/sbin/samhain -t check -i -p err -s none -l none -m none' >> /etc/sudoers

    apt-get install libpam-pwdfile
    cat > /etc/pam.d/sudo << EOF
#%PAM-1.0

auth [authinfo_unavail=ignore success=done ignore=ignore default=die] pam_pwdfile.so pwdfile=/var/lib/misc/thishost/sudo-passwd
auth required pam_unix.so nullok_secure try_first_pass
#@include common-auth
@include common-account

session required pam_permit.so
session required pam_limits.so
EOF
}}}

* OPEN A NEW SHELL - DO _NOT_ LOG OUT OF THIS ONE:<BR>
  test that the dedicated sudo password works.  if not, undo the pam sudo config.
  (comment out the auth lines and include common-auth again)

* setup ldap.conf:
{{{
    grep '^URI.*db.debian.org' /etc/ldap/ldap.conf || cat >> /etc/ldap/ldap.conf << EOF

URI             ldap://db.debian.org
BASE            dc=debian,dc=org

TLS_CACERT      /etc/ssl/certs/spi-cacert-2008.pem
TLS_REQCERT     hard
EOF
}}}

* munin setup:
* grant access to spohr
{{{
    sed -i -e '/^allow/d; $ a \allow ^192\\\.25\\\.206\\\.57$\nallow ^192\\\.25\\\.206\\\.33$' /etc/munin/munin-node.conf
    ( cd / && env -i /etc/init.d/munin-node restart )
}}}
* add to munin on spohr
{{{
    :: spohr :: && sudo vi /etc/munin/munin.conf
}}}


* add host to nagios config

* disable password auth with ssh, once you verified you can log in
  and become root using keys.
{{{
    vi /etc/ssh/sshd_config
      | PasswordAuthentication no
    (cd / && env -i /etc/init.d/ssh restart)
}}}

* if it is a HP Proliant, or has other management fu, read setup-oob

-- weasel, Wed, 04 Jun 2008 20:52:56 +0200