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1 | Building FRR on CentOS 7 from Git Source |
2 | ======================================== | |
3 | ||
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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 | ||
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8 | CentOS 7 restrictions: |
9 | ---------------------- | |
10 | ||
11 | - MPLS is not supported on `CentOS 7` with default kernel. MPLS requires | |
12 | Linux Kernel 4.5 or higher (LDP can be built, but may have limited use | |
13 | without MPLS) | |
14 | ||
15 | Install required packages | |
16 | ------------------------- | |
ae32b152 | 17 | |
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18 | Add packages: |
19 | ||
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20 | sudo yum install git autoconf automake libtool make gawk \ |
21 | readline-devel texinfo net-snmp-devel groff pkgconfig \ | |
22 | json-c-devel pam-devel bison flex pytest c-ares-devel \ | |
23 | perl-XML-LibXML | |
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24 | |
25 | Get FRR, compile it and install it (from Git) | |
26 | --------------------------------------------- | |
27 | ||
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28 | **This assumes you want to build and install FRR from source and not using |
29 | any packages** | |
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30 | |
31 | ### Add frr groups and user | |
32 | ||
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33 | sudo groupadd -g 92 frr |
34 | sudo groupadd -r -g 85 frrvt | |
35 | sudo useradd -u 92 -g 92 -M -r -G frrvt -s /sbin/nologin \ | |
447a8fe9 | 36 | -c "FRR FRRouting suite" -d /var/run/frr frr |
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37 | |
38 | ### Download Source, configure and compile it | |
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39 | (You may prefer different options on configure statement. These are just |
40 | an example.) | |
41 | ||
d6180888 | 42 | git clone https://github.com/frrouting/frr.git frr |
eb651bbc | 43 | cd frr |
e3de326d | 44 | git checkout stable/3.0 |
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45 | ./bootstrap.sh |
46 | ./configure \ | |
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47 | --bindir=/usr/bin \ |
48 | --sbindir=/usr/lib/frr \ | |
eb651bbc | 49 | --sysconfdir=/etc/frr \ |
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50 | --libdir=/usr/lib/frr \ |
51 | --libexecdir=/usr/lib/frr \ | |
eb651bbc | 52 | --localstatedir=/var/run/frr \ |
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53 | --with-moduledir=/usr/lib/frr/modules \ |
54 | --enable-pimd \ | |
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55 | --enable-snmp=agentx \ |
56 | --enable-multipath=64 \ | |
57 | --enable-ospfclient=yes \ | |
58 | --enable-ospfapi=yes \ | |
59 | --enable-user=frr \ | |
60 | --enable-group=frr \ | |
61 | --enable-vty-group=frrvt \ | |
62 | --enable-rtadv \ | |
63 | --disable-exampledir \ | |
64 | --enable-watchfrr \ | |
e3de326d | 65 | --disable-ldpd \ |
eb651bbc | 66 | --enable-fpm \ |
e3de326d | 67 | --enable-nhrpd \ |
eb651bbc | 68 | --with-pkg-git-version \ |
e3de326d | 69 | --with-pkg-extra-version=-MyOwnFRRVersion |
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70 | make |
71 | make check | |
72 | sudo make install | |
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73 | |
74 | ### Create empty FRR configuration files | |
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75 | sudo mkdir /var/log/frr |
76 | sudo mkdir /etc/frr | |
77 | sudo touch /etc/frr/zebra.conf | |
78 | sudo touch /etc/frr/bgpd.conf | |
79 | sudo touch /etc/frr/ospfd.conf | |
80 | sudo touch /etc/frr/ospf6d.conf | |
81 | sudo touch /etc/frr/isisd.conf | |
82 | sudo touch /etc/frr/ripd.conf | |
83 | sudo touch /etc/frr/ripngd.conf | |
84 | sudo touch /etc/frr/pimd.conf | |
e3de326d | 85 | sudo touch /etc/frr/nhrpd.conf |
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86 | sudo chown -R frr:frr /etc/frr/ |
87 | sudo touch /etc/frr/vtysh.conf | |
88 | sudo chown frr:frrvt /etc/frr/vtysh.conf | |
89 | sudo chmod 640 /etc/frr/*.conf | |
278fb111 | 90 | |
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91 | ### Install daemon config file |
92 | sudo install -p -m 644 redhat/daemons /etc/frr/ | |
93 | sudo chown frr:frr /etc/frr/daemons | |
94 | ||
95 | ### Edit /etc/frr/daemons as needed to select the required daemons | |
96 | ||
97 | Look for the section with `watchfrr_enable=...` and `zebra=...` etc. | |
98 | Enable the daemons as required by changing the value to `yes` | |
99 | ||
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100 | ### Enable IP & IPv6 forwarding |
101 | ||
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102 | Create a new file `/etc/sysctl.d/90-routing-sysctl.conf` with the |
103 | following content: | |
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104 | |
105 | # Sysctl for routing | |
106 | # | |
107 | # Routing: We need to forward packets | |
108 | net.ipv4.conf.all.forwarding=1 | |
109 | net.ipv6.conf.all.forwarding=1 | |
110 | ||
e3de326d | 111 | Load the modifed sysctl's on the system: |
278fb111 | 112 | |
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113 | sudo sysctl -p /etc/sysctl.d/90-routing-sysctl.conf |
114 | ||
115 | ### Install frr Service and redhat init files | |
116 | sudo install -p -m 644 redhat/frr.service /usr/lib/systemd/system/frr.service | |
117 | sudo install -p -m 755 redhat/frr.init /usr/lib/frr/frr | |
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118 | |
119 | ### Register the systemd files | |
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120 | sudo systemctl preset frr.service |
121 | ||
122 | ### Enable required frr at startup | |
123 | sudo systemctl enable frr | |
124 | ||
125 | ### Reboot or start FRR manually | |
126 | sudo systemctl start frr |