# This document is a how-to for installing a Fedora scripts.mit.edu server. # It is semi-vaguely in the form of a shell script, but is not really # runnable as it stands. # Notation # [PRODUCTION] Production server that will be put into the pool # [WIZARD] Semi-production server that will only have # daemon.scripts-security-upd bits, among other # restricted permissions # [TESTSERVER] Completely untrusted server # This is actually just "pick an active scripts server". It can't be # scripts.mit.edu because our networking config points that domain # at localhost, and if our server is not setup at that point things # will break. source_server="shining-armor.mit.edu" # 'branch' is the current svn branch you are on. You want to # use trunk if your just installing a new server, and branches/fcXX-dev # if your preparing a server on a new Fedora release. branch="trunk" # 'server' is the public hostname of your server, for SCP'ing files # to and from. server=YOUR-SERVER-NAME-HERE # ----------------------------->8-------------------------------------- # FIRST TIME INSTRUCTIONS # # [PRODUCTION] If this is the first time you've installed this hostname, # you will need to update a bunch of files to add support for it. These # include: # o Adding all aliases to /etc/httpd/conf.d/scripts-vhost-names.conf # (usually this is hostname, hostname.mit.edu, h-n, h-n.mit.edu, # scriptsN, scriptsN.mit.edu, and the IP address.) # o Adding routing rules for the static IP in # /etc/sysconfig/network-scripts/route-eth1 # o Adding the IP address to the hosts file (same hosts as for # scripts-vhost-names) # o Update SSH config at # - server/fedora/config/etc/ssh/shosts.equiv # - server/fedora/config/etc/ssh/ssh_known_hosts # - server/fedora/config/etc/ssh/sshd_config : DenyUsers # (the last part is critical to ensure that rooting one server # doesn't give you root to all the other servers) # o Put the hostname information in LDAP so SVN and Git work # o Set up Nagios monitoring on sipb-noc for the host # o Set up the host as in the pool on r-b/r-b /etc/heartbeat/ldirectord.cf # o Update locker/etc/known_hosts # # You will also need to prepare the keytabs for credit-card. In particular, # use ktutil to combine the host/scripts.mit.edu and # host/scripts-vhosts.mit.edu keys with host/this-server.mit.edu in # the keytab. Do not use 'k5srvutil change' on the combined keytab # or you'll break the other servers. (real servers only). Be # careful about writing out the keytab: if you write it to an # existing file the keys will just get appended. The correct # credential list should look like: # ktutil: l # slot KVNO Principal # ---- ---- --------------------------------------------------------------------- # 1 5 host/old-faithful.mit.edu@ATHENA.MIT.EDU # 2 3 host/scripts-vhosts.mit.edu@ATHENA.MIT.EDU # 3 2 host/scripts.mit.edu@ATHENA.MIT.EDU # # The LDAP keytab should be by itself, so be sure to delete it and # put it in its own file. # ----------------------------->8-------------------------------------- # INFINITE INSTALLATION # Start with a Scripts kickstarted install of Fedora (install-fedora) # Take updates, reboot if there's a kernel update. yum update -y # Get rid of network manager (XXX figure out to make kickstarter do # this for us) yum remove NetworkManager # Check out the scripts /etc configuration cd /root \cp -a etc / chmod 0440 /etc/sudoers # Make sure network is working. Kickstart should have # configured eth0 and eth1 correctly; use service network restart # to add the new routes from etc in route-eth1. systemctl restart network.service # Check everything worked: route ifconfig cat /etc/hosts cat /etc/sysconfig/network-scripts/route-eth1 # This is the point at which you should start updating scriptsified # packages for a new Fedora release. Consult 'upgrade-tips' for more # information. yum install -y scripts-base # Some of these packages are naughty and clobber some of our files cd /etc svn revert resolv.conf hosts sysconfig/openafs # Replace rsyslog with syslog-ng by doing: rpm -e --nodeps rsyslog yum install -y syslog-ng systemctl enable syslog-ng.service # Install the full list of RPMs that users expect to be on the # scripts.mit.edu servers. rpm -qa --queryformat "%{Name}.%{Arch}\n" | sort > packages.txt # arrange for packages.txt to be passed to the server, then run: # --skip-broken will (usually) prevent you from having to sit through # several minutes of dependency resolution until it decides that # it can't install /one/ package. yum install -y --skip-broken $(cat packages.txt) # Make sure sendmail isn't installed yum remove sendmail # Check which packages are installed on your new server that are not # in the snapshot, and remove ones that aren't needed for some reason # on the new machine. Otherwise, aside from bloat, you may end up # with undesirable things for security, like sendmail. rpm -qa --queryformat "%{Name}.%{Arch}\n" | grep -v kernel | sort > newpackages.txt diff -u packages.txt newpackages.txt | grep -v kernel | less # here's a cute script that removes all extra packages yum erase -y $(grep -Fxvf packages.txt newpackages.txt) # 20101208 - Mysteriously we manage to get these extra packages # from kickstart: mcelog mobile-broadband-provider-info # ModemManager PackageKit # We need an upstream version of cgi which we've packaged ourselves, but # it doesn't work with the haskell-platform package which expects # explicit versions. So temporarily rpm -e the package, and then # install it again after you install haskell-platform. [Note: You # probably won't need this in Fedora 15 or something, when the Haskell # Platform gets updated.] rpm -e ghc-cgi-devel ghc-cgi yum install -y haskell-platform yumdownloader ghc-cgi yumdownloader ghc-cgi-devel rpm -i ghc-cgi*1.8.1*.rpm # ----------------------------->8-------------------------------------- # SPHEROID SHENANIGANS # Note: Since ultimately we'd like to move away from using per-language # package manager and all of these be RPMs, it is of questionable # importance how much /good/ automation for these is necessary. # Warning: For a new release, we're supposed to check if Fedora has # packaged up the RPM. Unfortunately we don't really have good incants # for this. # Install the full list of perl modules that users expect to be on the # scripts.mit.edu servers. cd /root export PERL_MM_USE_DEFAULT=1 cpan # this is interactive, enter the next two lines o conf prerequisites_policy follow o conf commit # on a reference server perldoc -u perllocal | grep head2 | cut -f 3 -d '<' | cut -f 1 -d '|' | sort -u | perl -ne 'chomp; print "notest install $_\n" if system("rpm -q --whatprovides \"perl($_)\" >/dev/null 2>/dev/null")' > perl-packages.txt # arrange for perl-packages.txt to be transferred to server cat perl-packages.txt | perl -MCPAN -e shell # Install the Python eggs and Ruby gems and PEAR/PECL doohickeys that are on # the other scripts.mit.edu servers and do not have RPMs. # The general mode of operation will be to run the "list" command # on both servers, see what the differences are, check if those diffs # are packaged up as rpms, and install them (rpm if possible, native otherwise) # - Look at /usr/lib/python2.6/site-packages and # /usr/lib64/python2.6/site-packages for Python eggs and modules. # There will be a lot of gunk that was installed from packages; # easy-install.pth in /usr/lib/ will tell you what was easy_installed. # First use 'yum search' to see if the relevant package is now available # as an RPM, and install that if it is. If not, then use easy_install. # Pass -Z to easy_install to install them unzipped, as some zipped eggs # want to be able to write to ~/.python-eggs. (Also makes sourcediving # easier.) # 'easy_install AuthKit jsonlib2 pygit' cat /usr/lib/python2.7/site-packages/easy-install.pth | grep "^./" | cut -c3- | cut -f1 -d- > egg.txt cat egg.txt | xargs easy_install -Z # - Look at `gem list` for Ruby gems. # Again, use 'yum search' and prefer RPMs, but failing that, 'gem install'. # ezyang: rspec-rails depends on rspec, and will override the Yum # package, so... don't use that RPM yet # XXX This doesn't do the right thing for old version gems gem list --no-version > gem.txt gem install $(gem list --no-version | grep -Fxvf - gem.txt) # Also, we need to install the old rails version # - Look at `pear list` for Pear fruits (or whatever they're called). # Yet again, 'yum search' for RPMs before resorting to 'pear install'. Note # that for things in the beta repo, you'll need 'pear install package-beta'. # (you might get complaints about the php_scripts module; ignore them) pear list | tail -n +4 | cut -f 1 -d " " > pear.txt pear config-set preferred_state beta pear channel-update pear.php.net pear install $(pear list | tail -n +4 | cut -f 1 -d " " | grep -Fxvf - pear.txt) # - Look at `pecl list` for PECL things. 'yum search', and if you must, # 'pecl install' needed items. If it doesn't work, try 'pear install # pecl/foo' or 'pecl install foo-beta' or those two combined. pecl list | tail -n +4 | cut -f 1 -d " " > pecl.txt pecl install --nodeps $(pecl list | tail -n +4 | cut -f 1 -d " " | grep -Fxvf - pecl.txt) # ----------------------------->8-------------------------------------- # INFINITE CONFIGURATION # Run credit-card to clone in credentials and make things runabble python host.py push $server # This is superseded by credit-card, but only for [PRODUCTION] # Don't use credit-card on [WIZARD]: it will put in the wrong creds! # # # All types of servers will have an /etc/daemon.keytab file, however, # # different types of server will have different credentials in this # # keytab. # # [PRODUCTION] daemon.scripts # # [WIZARD] daemon.scripts-security-upd # # [TESTSERVER] daemon.scripts-test # [PRODUCTION/WIZARD] Fix the openafs /usr/vice/etc <-> /etc/openafs # mapping. echo "/afs:/usr/vice/cache:10000000" > /usr/vice/etc/cacheinfo echo "athena.mit.edu" > /usr/vice/etc/ThisCell # [TESTSERVER] If you're installing a test server, this needs to be # much smaller; the max filesize on XVM is 10GB. Pick something like # 500000. Also, some of the AFS parameters are kind of retarded (and if # you're low on disk space, will actually exhaust our inodes). Edit # these parameters in /etc/sysconfig/openafs (but wait, that won't # work, will it...) echo "/afs:/usr/vice/cache:500000" > /usr/vice/etc/cacheinfo vim /etc/sysconfig/openafs # Test that zephyr is working systemctl enable zhm.service systemctl start zhm.service echo 'Test!' | zwrite -d -c scripts -i test # Check out the scripts /usr/vice/etc configuration cd /root/vice \cp -a etc /usr/vice # [PRODUCTION] Set up replication (see ./install-ldap). # You'll need the LDAP keytab for this server: be sure to chown it # fedora-ds after you create the fedora-ds user ls -l /etc/dirsrv/keytab cat install-ldap # Enable lots of services systemctl enable openafs-client.service systemctl enable dirsrv.service systemctl enable nslcd.service systemctl enable nscd.service systemctl enable postfix.service systemctl enable nrpe.service systemctl enable httpd.service # not for [WIZARD] systemctl start openafs-client.service systemctl start dirsrv.service systemctl start nslcd.service systemctl start nscd.service systemctl start postfix.service systemctl start nrpe.service systemctl start httpd.service # not for [WIZARD] # Note about OpenAFS: Check that fs sysname is correct. You should see, # among others, 'amd64_fedoraX_scripts' (vary X) and 'scripts'. If it's # not, you probably did a distro upgrade and should update # /etc/sysconfig/openafs (XXX this is wrong: figuring out new # systemd world order). fs sysname # Postfix doesn't actually deliver mail; fix this cd /etc/postfix postmap virtual # Munin might not be monitoring packages that were installed after it munin-node-configure --suggest --shell | sh # Run fmtutil-sys --all, which does something that makes TeX work. # (Note: this errors on XeTeX which is ok.) fmtutil-sys --all # Ensure that PHP isn't broken: mkdir /tmp/sessions chmod 01777 /tmp/sessions # XXX: this seems to get deleted if tmp gets cleaned up, so we # might need something a little better (maybe init script.) # Fix etc by making sure none of our config files got overwritten cd /etc svn status -q # Some usual candidates for clobbering include nsswitch.conf and # sysconfig/openafs # [WIZARD/TEST] Remember that changes you made should not get # reverted! # ThisCell got clobbered, replace it with athena.mit.edu echo "athena.mit.edu" > /usr/vice/etc/ThisCell # Reboot the machine to restore a consistent state, in case you # changed anything. (Note: Starting kdump fails (this is ok)) # When all is said and done, fix up the Subversion checkouts cd /etc svn switch --relocate svn://$source_server/ svn://scripts.mit.edu/ cd /usr/vice/etc svn switch --relocate svn://$source_server/ svn://scripts.mit.edu/ cd /srv/repository # Some commands should be run as the scripts-build user, not root. alias asbuild="sudo -u scripts-build" asbuild svn switch --relocate svn://$source_server/ svn://scripts.mit.edu/ asbuild svn up # verify scripts.mit.edu works # ------------------------------->8------------------------------- # ADDENDA AND MISCELLANEOUS THINGS # [OPTIONAL] Your machine's hostname is baked in at install time; # in the rare case you need to change it: it appears to be in: # o /etc/sysconfig/network # o your lvm thingies; probably don't need to edit # [WIZARD/TESTSERVER] If you are setting up a non-production server, # there are some services that it won't provide, and you will need to # make it talk to a real server instead. In particular: # - We don't serve the web, so don't bind scripts.mit.edu # - We don't serve LDAP, so use another server # This involves editing the following files: # o /etc/sysconfig/network-scripts/ifcfg-lo:0 # o /etc/sysconfig/network-scripts/ifcfg-lo:1 # o /etc/sysconfig/network-scripts/ifcfg-lo:2 # o /etc/sysconfig/network-scripts/ifcfg-lo:3 \rm /etc/sysconfig/network-scripts/ifcfg-lo:{0,1,2,3} # o /etc/ldap.conf # add: host scripts.mit.edu # o /etc/{nss-ldapd,nslcd}.conf # replace: uri ldapi://%2fvar%2frun%2fdirsrv%2fslapd-scripts.socket/ # with: uri ldap://scripts.mit.edu/ # o /etc/openldap/ldap.conf # add: URI ldap://scripts.mit.edu/ # BASE dc=scripts,dc=mit,dc=edu # o /etc/httpd/conf.d/vhost_ldap.conf # replace: VhostLDAPUrl "ldap://127.0.0.1/ou=VirtualHosts,dc=scripts,dc=mit,dc=edu" # with: VhostLDAPUrl "ldap://scripts.mit.edu/ou=VirtualHosts,dc=scripts,dc=mit,dc=edu" # o /etc/postfix/virtual-alias-{domains,maps}-ldap.cf # replace: server_host ldapi://%2fvar%2frun%2fdirsrv%2fslapd-scripts.socket/ # with: server_host = ldap://scripts.mit.edu # to use scripts.mit.edu instead of localhost. # XXX: someone should write sed scripts to do this # [WIZARD/TESTSERVER] If you are setting up a non-production server, # afsagent's cronjob will attempt to be renewing with the wrong # credentials (daemon.scripts). Change this: vim /home/afsagent/renew # replace all mentions of daemon.scripts.mit.edu # [TESTERVER] # - You need a self-signed SSL cert or Apache will refuse to start # or do SSL. Generate with: openssl req -new -x509 -keyout /etc/pki/tls/private/scripts.key -out /etc/pki/tls/certs/scripts.cert -nodes # Also make /etc/pki/tls/certs/ca.pem match up (XXX what's the # incant for that?) # [TESTSERVER] More stuff for test servers # - Make (/etc/aliases) root mail go to /dev/null, so we don't spam people # - Edit /etc/httpd/conf.d/scripts-vhost-names.conf to have scripts-fX-test.xvm.mit.edu # be an accepted vhost name # - Look at the old test server and see what config changes are floating around