Ubuntu networking: Difference between revisions
m (Text replacement - "<source" to "<syntaxhighlight") |
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===Create /etc/sysctl.d/60-disable-ipv6.conf=== | ===Create /etc/sysctl.d/60-disable-ipv6.conf=== | ||
Create a file named <i>/etc/sysctl.d/60-disable-ipv6.conf</i> with this content: | Create a file named <i>/etc/sysctl.d/60-disable-ipv6.conf</i> with this content: | ||
< | <syntaxhighlight lang=bash> | ||
net.ipv6.conf.all.disable_ipv6 = 1 | net.ipv6.conf.all.disable_ipv6 = 1 | ||
net.ipv6.conf.default.disable_ipv6 = 1 | net.ipv6.conf.default.disable_ipv6 = 1 | ||
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===Activate /etc/sysctl.d/60-disable-ipv6.conf=== | ===Activate /etc/sysctl.d/60-disable-ipv6.conf=== | ||
< | <syntaxhighlight lang=bash> | ||
# sysctl -p /etc/sysctl.d/10-disable-ipv6.conf | # sysctl -p /etc/sysctl.d/10-disable-ipv6.conf | ||
net.ipv6.conf.all.disable_ipv6 = 1 | net.ipv6.conf.all.disable_ipv6 = 1 | ||
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===Check settings=== | ===Check settings=== | ||
< | <syntaxhighlight lang=bash> | ||
# cat /proc/sys/net/ipv6/conf/all/disable_ipv6 | # cat /proc/sys/net/ipv6/conf/all/disable_ipv6 | ||
1 | 1 | ||
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===Configure bond manually=== | ===Configure bond manually=== | ||
Specify your environment | Specify your environment | ||
< | <syntaxhighlight lang=bash> | ||
# mymaster1=eno5 | # mymaster1=eno5 | ||
# mymaster2=eno6 | # mymaster2=eno6 | ||
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Create the bonding interface out of the two masters | Create the bonding interface out of the two masters | ||
< | <syntaxhighlight lang=bash> | ||
# ip link add ${myinterface} type bond | # ip link add ${myinterface} type bond | ||
# ip link set ${myinterface} type bond miimon 100 mode active-backup | # ip link set ${myinterface} type bond miimon 100 mode active-backup | ||
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If you want to add a VLAN to your interface | If you want to add a VLAN to your interface | ||
< | <syntaxhighlight lang=bash> | ||
# myvlan=1234 | # myvlan=1234 | ||
# ip link add link ${myinterface} name ${myinterface}.${myvlan} type vlan id ${myvlan} | # ip link add link ${myinterface} name ${myinterface}.${myvlan} type vlan id ${myvlan} | ||
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Bring your interface up and set yout ip address | Bring your interface up and set yout ip address | ||
< | <syntaxhighlight lang=bash> | ||
# ip link set ${myinterface} up | # ip link set ${myinterface} up | ||
# ip addr add ${myipaddr} dev ${myinterface} | # ip addr add ${myipaddr} dev ${myinterface} | ||
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Set your default gateway and DNS | Set your default gateway and DNS | ||
< | <syntaxhighlight lang=bash> | ||
# ip route add default via ${mygateway} | # ip route add default via ${mygateway} | ||
# if (( ${#mynameservers[*]} > 1 )) ; then eval systemd-resolve --interface ${myinterface} --set-dns={$(IFS=,; printf '%s' "${mynameservers[*]}")} ; else eval systemd-resolve --interface ${myinterface} --set-dns=${mynameservers[0]} ; fi | # if (( ${#mynameservers[*]} > 1 )) ; then eval systemd-resolve --interface ${myinterface} --set-dns={$(IFS=,; printf '%s' "${mynameservers[*]}")} ; else eval systemd-resolve --interface ${myinterface} --set-dns=${mynameservers[0]} ; fi | ||
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===ipa=== | ===ipa=== | ||
This is not only indian pale ale! On linux | This is not only indian pale ale! On linux | ||
< | <syntaxhighlight lang=bash> | ||
# ip a | # ip a | ||
</source> | </source> | ||
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===iplishup=== | ===iplishup=== | ||
This just sounds like a word and helps you to keep it in mind. | This just sounds like a word and helps you to keep it in mind. | ||
< | <syntaxhighlight lang=bash> | ||
# ip li sh up | # ip li sh up | ||
</source> | </source> | ||
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====netplan <command>==== | ====netplan <command>==== | ||
To apply changes to your files in /etc/netplan without reboot use: | To apply changes to your files in /etc/netplan without reboot use: | ||
< | <syntaxhighlight lang=bash> | ||
# netplan appy | # netplan appy | ||
</source> | </source> | ||
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====DHCP==== | ====DHCP==== | ||
<i>/etc/netplan/ens160.yaml</i> | <i>/etc/netplan/ens160.yaml</i> | ||
< | <syntaxhighlight lang=yaml> | ||
network: | network: | ||
ethernets: | ethernets: | ||
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====Bonding==== | ====Bonding==== | ||
<i>/etc/netplan/bond007.yaml</i> | <i>/etc/netplan/bond007.yaml</i> | ||
< | <syntaxhighlight lang=yaml> | ||
network: | network: | ||
version: 2 | version: 2 | ||
Revision as of 16:52, 25 November 2021
Disable IPv6
Create /etc/sysctl.d/60-disable-ipv6.conf
Create a file named /etc/sysctl.d/60-disable-ipv6.conf with this content: <syntaxhighlight lang=bash> net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 </source>
Activate /etc/sysctl.d/60-disable-ipv6.conf
<syntaxhighlight lang=bash>
- sysctl -p /etc/sysctl.d/10-disable-ipv6.conf
net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 </source>
Check settings
<syntaxhighlight lang=bash>
- cat /proc/sys/net/ipv6/conf/all/disable_ipv6
1 </source>
The ip command
Configure bond manually
Specify your environment <syntaxhighlight lang=bash>
- mymaster1=eno5
- mymaster2=eno6
- myinterface=bond007
- myipaddr=172.16.78.9/24
- mygateway=172.16.78.1
- declare -a mynameservers=( 172.16.77.4 172.16.79.4 )
</source>
Create the bonding interface out of the two masters <syntaxhighlight lang=bash>
- ip link add ${myinterface} type bond
- ip link set ${myinterface} type bond miimon 100 mode active-backup
- ip link set ${mymaster1} down
- ip link set ${mymaster1} master ${myinterface}
- ip link set ${mymaster2} down
- ip link set ${mymaster2} master ${myinterface}
</source>
If you want to add a VLAN to your interface <syntaxhighlight lang=bash>
- myvlan=1234
- ip link add link ${myinterface} name ${myinterface}.${myvlan} type vlan id ${myvlan}
- myinterface=${myinterface}.${myvlan}
</source>
Bring your interface up and set yout ip address <syntaxhighlight lang=bash>
- ip link set ${myinterface} up
- ip addr add ${myipaddr} dev ${myinterface}
</source>
Set your default gateway and DNS <syntaxhighlight lang=bash>
- ip route add default via ${mygateway}
- if (( ${#mynameservers[*]} > 1 )) ; then eval systemd-resolve --interface ${myinterface} --set-dns={$(IFS=,; printf '%s' "${mynameservers[*]}")} ; else eval systemd-resolve --interface ${myinterface} --set-dns=${mynameservers[0]} ; fi
</source>
ipa
This is not only indian pale ale! On linux <syntaxhighlight lang=bash>
- ip a
</source> shows you the configured addresses. It is the short cut for "ip address show".
iplishup
This just sounds like a word and helps you to keep it in mind. <syntaxhighlight lang=bash>
- ip li sh up
</source> shows you all links (interfaces) that are up. This is short for "ip link show up".
New since Ubuntu 17.10
netplan
Former configuration in /etc/network/interfaces{,.d} is now found in /etc/netplan in YAML syntax. The name of the file is /etc/netplan/<whatever you want, I prefer the interface name>.yaml . The .yaml at the end is not optional!
netplan <command>
To apply changes to your files in /etc/netplan without reboot use: <syntaxhighlight lang=bash>
- netplan appy
</source> Keep in mind: You might lose your connection depending on the changes made!
DHCP
/etc/netplan/ens160.yaml <syntaxhighlight lang=yaml> network:
ethernets:
ens160:
dhcp4: yes
version: 2
</source>
Bonding
/etc/netplan/bond007.yaml <syntaxhighlight lang=yaml> network:
version: 2
renderer: networkd
ethernets:
slave1:
match:
macaddress: "3c:a7:2a:22:af:70"
dhcp4: no
slave2:
match:
macaddress: "3c:a7:2a:22:af:71"
dhcp4: no
bonds:
bond007:
interfaces:
- slave1
- slave2
parameters:
mode: balance-rr
mii-monitor-interval: 10
dhcp4: no
addresses:
- 192.168.189.202/27
gateway4: 192.168.189.193
nameservers:
search:
- mcs.de
addresses:
- "192.168.3.60"
- "192.168.3.61"
</source>
