doc/Building_FRR_on_CentOS6.md

   1 Building FRR on CentOS 6 from Git Source
   2 ========================================
   3
   4 (As an alternative to this installation, you may prefer to create a FRR
   5 rpm package yourself and install that package instead. See instructions
   6 in redhat/README.rpm_build.md on how to build a rpm package)
   7
   8 Instructions are tested with `CentOS 6.8` on `x86_64` platform
   9
  10 CentOS 6 restrictions:
  11 ----------------------
  12
  13 - PIMd is not supported on `CentOS 6`. Upgrade to `CentOS 7` if PIMd is
  14   needed
  15 - MPLS is not supported on `CentOS 6`. MPLS requires Linux Kernel 4.5 or
  16   higher (LDP can be built, but may have limited use without MPLS)
  17 - Zebra is unable to detect what bridge/vrf an interface is associcated
  18   with (IFLA_INFO_SLAVE_KIND does not exist in the kernel headers, you
  19   can use a newer kernel + headers to get this functionality)
  20 - frr_reload.py will not work, as this requires Python 2.7, and CentOS 6
  21   only has 2.6.  You can install Python 2.7 via IUS, but it won't work
  22   properly unless you compile and install the ipaddr package for it.
  23
  24 Install required packages
  25 -------------------------
  26
  27 Add packages:
  28
  29     sudo yum install git autoconf automake libtool make gawk \
  30       readline-devel texinfo net-snmp-devel groff pkgconfig \
  31       json-c-devel pam-devel flex epel-release perl-XML-LibXML \
  32       c-ares-devel
  33
  34 Install newer version of bison (CentOS 6 package source is too old) from
  35 CentOS 7
  36
  37     sudo yum install rpm-build
  38     curl -O http://vault.centos.org/7.0.1406/os/Source/SPackages/bison-2.7-4.el7.src.rpm
  39     rpmbuild --rebuild ./bison-2.7-4.el7.src.rpm
  40     sudo yum install ./rpmbuild/RPMS/x86_64/bison-2.7-4.el6.x86_64.rpm
  41     rm -rf rpmbuild
  42
  43 Install newer version of autoconf and automake (Package versions are too old)
  44
  45     curl -O http://ftp.gnu.org/gnu/autoconf/autoconf-2.69.tar.gz
  46     tar xvf autoconf-2.69.tar.gz
  47     cd autoconf-2.69
  48     ./configure --prefix=/usr
  49     make
  50     sudo make install
  51     cd ..
  52
  53     curl -O http://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz
  54     tar xvf automake-1.15.tar.gz
  55     cd automake-1.15
  56     ./configure --prefix=/usr
  57     make
  58     sudo make install
  59     cd ..
  60
  61 Install `Python 2.7` in parallel to default 2.6.
  62 Make sure you've install EPEL (`epel-release` as above). Then install current
  63 `python27`, `python27-devel` and `pytest`
  64
  65     sudo rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
  66     sudo rpm -ivh https://centos6.iuscommunity.org/ius-release.rpm
  67     sudo yum install python27 python27-pip python27-devel
  68     sudo pip2.7 install pytest
  69
  70 Please note that `CentOS 6` needs to keep python pointing to version 2.6
  71 for `yum` to keep working, so don't create a symlink for python2.7 to python
  72
  73 Get FRR, compile it and install it (from Git)
  74 ---------------------------------------------
  75
  76 **This assumes you want to build and install FRR from source and not using
  77 any packages**
  78
  79 ### Add frr groups and user
  80
  81     sudo groupadd -g 92 frr
  82     sudo groupadd -r -g 85 frrvt
  83     sudo useradd -u 92 -g 92 -M -r -G frrvt -s /sbin/nologin \
  84       -c "FRR FRRouting suite" -d /var/run/frr frr
  85
  86 ### Download Source, configure and compile it
  87 (You may prefer different options on configure statement. These are just
  88 an example.)
  89
  90     git clone https://github.com/frrouting/frr.git frr
  91     cd frr
  92     ./bootstrap.sh
  93     ./configure \
  94         --bindir=/usr/bin \
  95         --sbindir=/usr/lib/frr \
  96         --sysconfdir=/etc/frr \
  97         --libdir=/usr/lib/frr \
  98         --libexecdir=/usr/lib/frr \
  99         --localstatedir=/var/run/frr \
 100         --with-moduledir=/usr/lib/frr/modules \
 101         --disable-pimd \
 102         --enable-snmp=agentx \
 103         --enable-multipath=64 \
 104         --enable-ospfclient=yes \
 105         --enable-ospfapi=yes \
 106         --enable-user=frr \
 107         --enable-group=frr \
 108         --enable-vty-group=frrvt \
 109         --enable-rtadv \
 110         --disable-exampledir \
 111         --enable-watchfrr \
 112         --disable-ldpd \
 113         --enable-fpm \
 114         --enable-nhrpd \
 115         --enable-eigrpd \
 116         --enable-babeld \
 117         --with-pkg-git-version \
 118         --with-pkg-extra-version=-MyOwnFRRVersion
 119     make
 120     make check PYTHON=/usr/bin/python2.7
 121     sudo make install
 122
 123 ### Create empty FRR configuration files
 124     sudo mkdir /var/log/frr
 125     sudo mkdir /etc/frr
 126     sudo touch /etc/frr/zebra.conf
 127     sudo touch /etc/frr/bgpd.conf
 128     sudo touch /etc/frr/ospfd.conf
 129     sudo touch /etc/frr/ospf6d.conf
 130     sudo touch /etc/frr/isisd.conf
 131     sudo touch /etc/frr/ripd.conf
 132     sudo touch /etc/frr/ripngd.conf
 133     sudo touch /etc/frr/nhrpd.conf
 134     sudo touch /etc/frr/eigrpd.conf
 135     sudo touch /etc/frr/babeld.conf
 136     sudo chown -R frr:frr /etc/frr/
 137     sudo touch /etc/frr/vtysh.conf
 138     sudo chown frr:frrvt /etc/frr/vtysh.conf
 139     sudo chmod 640 /etc/frr/*.conf
 140
 141 ### Install daemon config file
 142     sudo install -p -m 644 redhat/daemons /etc/frr/
 143     sudo chown frr:frr /etc/frr/daemons
 144
 145 ### Edit /etc/frr/daemons as needed to select the required daemons
 146
 147 Look for the section with `watchfrr_enable=...` and `zebra=...` etc.
 148 Enable the daemons as required by changing the value to `yes`
 149
 150 ### Enable IP & IPv6 forwarding
 151
 152 Edit `/etc/sysctl.conf` and set the following values (ignore the other
 153 settings)
 154
 155     # Controls IP packet forwarding
 156     net.ipv4.ip_forward = 1
 157     net.ipv6.conf.all.forwarding=1
 158
 159     # Controls source route verification
 160     net.ipv4.conf.default.rp_filter = 0
 161
 162 Load the modifed sysctl's on the system:
 163
 164     sudo sysctl -p /etc/sysctl.d/90-routing-sysctl.conf
 165
 166 ### Add init.d startup files
 167     sudo install -p -m 755 redhat/frr.init /etc/init.d/frr
 168     sudo chkconfig --add frr
 169
 170 ### Enable frr daemon at startup
 171     sudo chkconfig frr on
 172
 173 ### Start FRR manually (or reboot)
 174     sudo /etc/init.d/frr start