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--- wiki2:linux-networking-tools [2020/10/31 12:22]
alfred [DNS]
+++ wiki2:linux-networking-tools [2020/11/04 12:04] (actual)
@@ Línea 123: / Línea 123: @@
 </code>
+===== Emulate network problems =====
+  * https://medium.com/@docler/network-issues-simulation-how-to-test-against-bad-network-conditions-b28f651d8a96
+  * https://wiki.linuxfoundation.org/networking/netem
+You will use "tc" command:
+<code>
+sudo tc qdisc add dev eth0 root netem delay 1s
+sudo tc qdisc del dev eth0 root
+</code>
+For example, to simulate problems with dockers you will do the next:
+  - ''docker inspect container'' -> And take the value for the IPAddress
+  - ''route -n'' -> To see which device is used for that container
+  - ''sudo tc qdisc add dev <device> root netem delay 1s''
+  - Test it with a ping.
+  - ''sudo tc qdisc del dev <device> root''
+==== Other examples ====
+<code>
+tc qdisc add dev eth0 root netem loss 5%
+tc qdisc change dev eth0 root netem corrupt 2%
+tc qdisc change dev eth0 root netem duplicate 1%
+</code>
 ===== How to... =====
 ==== Update DNS in Ubuntu 18.04 ====

Programming