how to delete the grepped iptables
I am trying to delete all iptables created by calico in my k3s setup. I am using calico-script to delete but after running this script some cali-
iptables I can see in iptables -S
output, I want to delete them all
I can see iptables with cali-
under iptables -S
root@Ubuntu-18-VM:~# iptables -S | grep -e 'cali-'
cali-FORWARD
cali-INPUT
cali-OUTPUT
cali-cidr-block
cali-from-hep-forward
cali-from-host-endpoint
cali-from-wl-dispatch
cali-from-wl-dispatch-5
cali-fw-cali2847b154969
cali-fw-cali4bb24809f90
cali-fw-cali531f8f2e712
cali-fw-cali5a82b3ff301
cali-pri-_CVSZITRyIpEmH8AB6H
cali-pri-_HayIXLB85hzHkIhWER
cali-pri-_PTRGc0U-L5Kz7V6ERW
cali-pri-_u2Tn2rSoAPffvE7JO6
cali-pri-kns.kube-system
cali-pro-_CVSZITRyIpEmH8AB6H
cali-pro-_HayIXLB85hzHkIhWER
cali-pro-_PTRGc0U-L5Kz7V6ERW
cali-pro-_u2Tn2rSoAPffvE7JO6
cali-pro-kns.kube-system
cali-to-hep-forward
How can I delete these iptables after grepping so that in iptables -S
all these doesn't come ?
Solution 1:
Deleting calico-Iptables:
Use calico-policy and add below lines at the end of script:
echo "Flush remaining calico iptables"
iptables-save | grep -i cali | iptables -F
echo "Delete remaining calico iptables"
iptables-save | grep -i cali | iptables -X
This will delete all calico iptables when you check with iptables -S
Note: Run this script only after uninstalling K3S otherwise calico will keep on creating the iptables.