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[CPDEV-96594] Changed MTU to 1430 #634

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merged 2 commits into from
Apr 9, 2024
Merged

[CPDEV-96594] Changed MTU to 1430 #634

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6533eb3
Changed MTU to 1430
igza0216 Apr 4, 2024
386e79a
Replace MTU 1430 to 1440 in original Calico manifests
igza0216 Apr 9, 2024
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4 changes: 2 additions & 2 deletions documentation/Troubleshooting.md
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Original file line number Diff line number Diff line change
Expand Up @@ -323,11 +323,11 @@ kubectl patch crontab/my-new-cron-object -p '{"metadata":{"finalizers":[]}}' --t
**Solution**: To change MTU size to required value run following command on any control-plane node:

```
# kubectl patch configmap/calico-config -n kube-system --type merge -p '{"data":{"veth_mtu": "1440"}}'
# kubectl patch configmap/calico-config -n kube-system --type merge -p '{"data":{"veth_mtu": "1430"}}'
```

where:
- **1440** is the size of MTU. For MTU 1450 on interface eth0 you should set MTU size 1430 for calico-config.
- **1430** is the size of MTU. For MTU 1450 on interface eth0 you should set MTU size 1430 for calico-config.


After updating the ConfigMap, perform a rolling restart of all calico/node pods. For example:
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2 changes: 1 addition & 1 deletion kubemarine/resources/configurations/defaults.yaml
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Expand Up @@ -567,7 +567,7 @@ plugins:
mode: ipip
crossSubnet: true
natOutgoing: true
mtu: 1440
mtu: 1430
fullmesh: true
announceServices: false
defaultAsNumber: 64512
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2 changes: 1 addition & 1 deletion kubemarine/resources/schemas/definitions/plugins/calico.json
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Expand Up @@ -27,7 +27,7 @@
},
"mtu": {
"type": "integer",
"default": 1440,
"default": 1430,
"description": "MTU size for Calico interface"
},
"fullmesh": {
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2 changes: 1 addition & 1 deletion test/unit/plugins/test_calico.py
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Expand Up @@ -61,7 +61,7 @@ def test_common_enrichment(self):

def _test_common_calico_config(self, manifest: Manifest):
data = self.get_obj(manifest, "ConfigMap_calico-config")['data']
self.assertEqual('1440', data['veth_mtu'],
self.assertEqual('1430', data['veth_mtu'],
"Unexpected veth_mtu configuration in calico-config ConfigMap")

def _test_deployment_calico_kube_controllers(self, manifest: Manifest, k8s_version: str):
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