這是我未編輯的bash解決方案。
如果有任何興趣,我可以重新寫這個讓它更易轉移。我會在腳本中留下意見來指導你。
#!/bin/bash
# Update ingress with potential new hosts
# REQUIREMENTS: [An existing ingress with at least one host, and jq installed on host]
kubectl get ingress laravel-ingress -n=gitlab-ci -o json > original_json #CHANGE THIS VALUE TO QUERY YOUR EXISTING INGRESS
existing_hosts=()
exisiting_host_names=()
# I pass 3 arguments into the script. The first 2 are potential new hosts (if they aren't in the ingress already, and the 3rd arg helps me build the service name)
API_HOST=$1
DASHBOARD_HOST=$2
NAME=$3
name="$NAME"
potential_new_hosts=(
"$API_HOST"
"$DASHBOARD_HOST"
)
new_hosts=()
while read -r value
do
existing_host_names+=("$value")
done < <(cat original_json | jq ['.spec.rules[] | .host'])
# Loop through potential new hosts and add any non-existing ones to a new array.
for potential_new_host in "${potential_new_hosts[@]}"; do
i=0
for existing_host in "${existing_host_names[@]}"; do
if [[ "$existing_host" == "\"$potential_new_host\"," ]] ; then
i=1
fi
done
if [[ "$i" == 0 ]] ; then
# A non-existing host, add to an array
new_hosts+=("$potential_new_host")
fi
done
while read -r value2
do
existing_hosts+=("$value2")
done < <(cat original_json | jq ['.spec.rules[] | .'])
# Enable for debugging
#echo "Original json"
#cat original_json
#echo "Existing host names"
#printf '%s\n' "${existing_host_names[@]}"
#echo "New hosts"
#printf '%s\n' "${new_hosts[@]}"
#echo "Existing hosts before adding"
#printf '%s\n' "${existing_hosts[@]}"
#echo "Hosts after adding new ones"
########
# Begin building of hosts json to patch ingress with
output_json=""
for existing_host in "${existing_hosts[@]}"; do
output_json=("$output_json$existing_host")
done
# Truncate the last char in our json string (it's a ']', and we want to potentially add to this array for patching
output_json=${output_json::-1}
i=0
for new_host in "${new_hosts[@]}"; do
# Add to our json object the new host names with my hard-coded config
output_json=("$output_json,{\"host\":\"$new_host\",\"http\":{ \"paths\": [{ \"backend\":{ \"serviceName\":\"$name-laravel-web\",\"servicePort\":80} } ]} }")
i=1
done
printf '%s]\n' "$output_json" > new_json
if [[ "$i" == 1 ]] ; then
echo "Ingress json has changed and should be updated."
echo "OLD:"
cat original_json
echo "PATCH: \"spec\": {\"rules\": $output_json]}"
kubectl patch ingress laravel-ingress -n=gitlab-ci -p="\"spec\": {\"rules\": $output_json]}"
else
echo "Ingress json has not changed and will not be updated."
fi
編輯(固定錯誤和換算成每腳本執行單個主機)
#!/bin/bash
# Update ingress with potential new host
NEW_HOST=$1
INGRESS_NAME=$2
SERVICE_NAME=$3
echo "Running update-ingress for New host: $NEW_HOST, ingress: $INGRESS_NAME, service: $SERVICE_NAME"
echo " Downloading existing ingress config"
kubectl get ingress "$INGRESS_NAME" -n=gitlab-ci -o json > original_json
existing_hosts=()
exisiting_host_names=()
echo " $ kubectl get ingress $INGRESS_NAME -n=gitlab-ci -o json > original json && cat original_json"
cat original_json
name="$SERVICE_NAME"
potential_new_host="$NEW_HOST"
new_hosts=()
echo "Looping through json values1"
cat original_json | jq ['.spec.rules[] | .host']
for value in $(cat original_json | jq ['.spec.rules[] | .host']);
do
# Replace all commas with ""
value=${value/,/""}
existing_host_names+=("$value")
echo "Looping v1: value:$value"
#printf 'Array: %s' "${existing_host_names[*]}"
done
echo "Right after values1"
i=0
for existing_host in "${existing_host_names[@]}"; do
echo "Looping through existing host: $existing_host == $potential_new_host"
if [[ "$existing_host" == "\"$potential_new_host\"" ]] ; then
i=1
fi
done
if [[ "$i" == 0 ]] ; then
new_hosts+=("$potential_new_host")
fi
echo "Looping through json values2"
for value2 in $(cat original_json | jq ['.spec.rules[] | .']);
do
existing_hosts+=("$value2")
#echo "existing host! $values2"
#printf 'Array: %s' "{existing_hosts[*]}"
done
echo "Original json"
#cat original_json
echo "Existing host names"
printf '%s\n' "${existing_host_names[@]}"
echo "New hosts"
printf '%s\n' "${new_hosts[@]}"
echo "Existing hosts before adding"
printf '%s\n' "${existing_hosts[@]}"
echo "Hosts after adding new ones"
output_json=""
for existing_host in "${existing_hosts[@]}"; do
output_json=("$output_json$existing_host")
done
output_json=${output_json::-1}
i=0
for new_host in "${new_hosts[@]}"; do
output_json=("$output_json,{\"host\":\"$new_host\",\"http\":{ \"paths\": [{ \"backend\":{ \"serviceName\":\"$SERVICE_NAME-laravel-web\",\"servicePort\":80} }, { \"backend\":{ \"serviceName\":\"$SERVICE_NAME-laravel-web\",\"servicePort\":443} } ]} }")
i=1
done
printf '%s]\n' "$output_json" > new_json
if [[ "$i" == 1 ]] ; then
echo "Ingress json has changed and should be updated."
echo "OLD:"
cat original_json
echo "PATCH: \"spec\": {\"rules\": $output_json]}"
kubectl patch ingress "$INGRESS_NAME" -n=gitlab-ci -p="\"spec\": {\"rules\": $output_json]}"
else
echo "Ingress json has not changed and will not be updated."
fi
上面JSON是不夠的。 spec.rules是必需的。但是現有的內容被這個補丁覆蓋了,所以通過新的設置就清楚了。我不想替換但添加。 – masudak