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refactor log-k8s and check-k8s to dynamically discover clusters from …
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…credhub
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@ogrand
ogrand committed Jun 26, 2024
1 parent 24d02d7 commit 35a1897
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Showing 2 changed files with 46 additions and 111 deletions.
16 changes: 8 additions & 8 deletions tools/check-k8s.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -54,24 +54,24 @@ checkClusterResources() {
#===================================================================================
unset https_proxy http_proxy no_proxy
export KUBECONFIG="${HOME}/.kube/config"
CLUSTER_CTX="$(kubectl config view -o json | jq -r ".contexts[].name")"
contexts="$(kubectl config view -o json | jq -r ".contexts[].name" | sort | pr -3t -W 130)"

if [ "$1" = "" ] ; then
printf "\n%bSelect a k8s context :%b\n${CLUSTER_CTX}" "${REVERSE}${GREEN}" "${STD}"
printf "\n\n%bYour choice (<Enter> to select all) :%b " "${GREEN}${BOLD}" "${STD}" ; read choice
printf "\n%bSelect a cluster :%b\n${contexts}" "${REVERSE}${GREEN}" "${STD}"
printf "\n\n%bYour choice (<Enter> to select all) :%b " "${GREEN}${BOLD}" "${STD}" ; read context
else
flagCtx="$(echo "${CLUSTER_CTX}" | grep "$1")"
flagCtx="$(echo "${contexts}" | grep "^$1$")"
if [ "${flagCtx}" = "" ] ; then
printf "\n%bCluster \"$1\" unknown...%b\n" "${RED}" "${STD}" ; exit 1
else
choice="$1"
context="$1"
fi
fi

if [ "${choice}" = "" ] ; then
for ctx in ${CLUSTER_CTX} ; do
if [ "${context}" = "" ] ; then
for ctx in ${contexts} ; do
checkClusterResources "${ctx}"
done
else
checkClusterResources "${choice}"
checkClusterResources "${context}"
fi
141 changes: 38 additions & 103 deletions tools/log-k8s.sh
View file
Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
# Log to kubernetes clusters for clis (kubectl, helm, k9s)
# Parameters :
# --context, -c : Select k8s context
# --proxy, -p : Set proxy for
# --proxy, -p : Set proxy
#===========================================================================

#--- Check scripts options
Expand Down Expand Up @@ -55,35 +55,6 @@ updateKubeConfig() {
fi
}

#--- Get k8s cluster configuration from credhub
getClusterConfiguration() {
credhub g -n /kubeconfigs/${K8S_CLUSTER} -j 2> /dev/null | jq -r '.value' > ${KUBECONFIG}
if [ -s ${KUBECONFIG} ] ; then
updateKubeConfig "clusters.name" "${K8S_CLUSTER}"
updateKubeConfig "contexts.context.cluster" "${K8S_CLUSTER}"
updateKubeConfig "contexts.name" "${K8S_CONTEXT}"
updateKubeConfig "users.name" "${K8S_CONTEXT}"
updateKubeConfig "contexts.context.user" "${K8S_CONTEXT}"
updateKubeConfig "current-context" "${K8S_CONTEXT}"
TARGET_KUBECONFIG="${TARGET_KUBECONFIG}:${KUBECONFIG}"
else
rm -f ${KUBECONFIG} > /dev/null 2>&1
fi
}

#--- Select k8s cluster
selectCluster() {
case "$1" in
"1"|"core-connectivity") K8S_TYPE_CLUSTER="k3s" ; K8S_CLUSTER="00-core-connectivity-k8s" ; K8S_CONTEXT="core-connectivity" ;;
"2"|"supervision") K8S_TYPE_CLUSTER="k3s" ; K8S_CLUSTER="00-supervision" ; K8S_CONTEXT="supervision" ;;
"3"|"marketplace") K8S_TYPE_CLUSTER="k3s" ; K8S_CLUSTER="00-marketplace" ; K8S_CONTEXT="marketplace" ;;
"4"|"shared-services") K8S_TYPE_CLUSTER="k3s" ; K8S_CLUSTER="00-shared-services" ; K8S_CONTEXT="shared-services" ;;
"5"|"ha-datastore") K8S_TYPE_CLUSTER="k3s" ; K8S_CLUSTER="00-k8s-ha-datastore" ; K8S_CONTEXT="ha-datastore" ;;
"6"|"openshift-gcp") K8S_TYPE_CLUSTER="openshift" ; K8S_CLUSTER="openshift-gcp" ; K8S_CONTEXT="openshift-gcp" ; CREDHUB_ENDPOINT="/secrets/external/gcp_poc_openshift_cluster_api_url" ;;
*) flag=0 ; flagError=1 ; clear ;;
esac
}

#--- Check scripts options
while [ ${nbParameters} -gt 0 ] ; do
case "$1" in
Expand Down Expand Up @@ -117,26 +88,38 @@ if [ ${flagError} = 0 ] ; then
fi
fi

#--- Log to k8s
#--- Generate kubeconfig files for all clusters
if [ ${flagError} = 0 ] ; then
#--- Get all clusters configuration
TARGET_KUBECONFIG=""
clear
printf "\n%bGet clusters properties...%b\n" "${YELLOW}${REVERSE}" "${STD}"
if [ "${SITE_NAME}" = "fe-int" ] ; then
MAX_ITEMS=8
else
MAX_ITEMS=6
fi

for value in $(seq 1 ${MAX_ITEMS}) ; do
selectCluster "${value}"
if [ "${K8S_TYPE_CLUSTER}" = "k3s" ] ; then
export KUBECONFIG="${HOME}/.kube/${K8S_CONTEXT}.yml"
getClusterConfiguration
#--- Get clusters list
TARGET_KUBECONFIG="" ; K8S_CONTEXTS=""
cluster_paths="$(credhub f | grep -E "name: /kubeconfigs/|name: /secrets/kubeconfigs/" | awk '{print $3}' | sort)"

for path in ${cluster_paths} ; do
K8S_CLUSTER="$(echo "${path}" | sed -e "s+.*kubeconfigs\/++")"
K8S_CONTEXT="$(echo "${path}" | sed -e "s+.*kubeconfigs\/++" -e "s+-k8s++" -e "s+00-++")"
K8S_CONTEXTS="${K8S_CONTEXTS} ${K8S_CONTEXT}"
export KUBECONFIG="${HOME}/.kube/${K8S_CONTEXT}.yml"

#--- Get k8s cluster configuration from credhub
credhub g -n ${path} -j 2> /dev/null | jq -r '.value' > ${KUBECONFIG}
if [ -s ${KUBECONFIG} ] ; then
updateKubeConfig "clusters.name" "${K8S_CLUSTER}"
updateKubeConfig "contexts.context.cluster" "${K8S_CLUSTER}"
updateKubeConfig "contexts.name" "${K8S_CONTEXT}"
updateKubeConfig "users.name" "${K8S_CONTEXT}"
updateKubeConfig "contexts.context.user" "${K8S_CONTEXT}"
updateKubeConfig "current-context" "${K8S_CONTEXT}"
TARGET_KUBECONFIG="${TARGET_KUBECONFIG}:${KUBECONFIG}"
else
rm -f ${KUBECONFIG} > /dev/null 2>&1
fi
done

K8S_CONTEXTS="$(echo "${K8S_CONTEXTS}" | sed -e "s+^ ++" | tr " " "\n")"

#--- Concatenate all clusters config files
export KUBECONFIG="$(echo "${TARGET_KUBECONFIG}" | sed -e "s+^:++")"
kubectl config view --flatten > ${HOME}/.kube/config
Expand All @@ -149,70 +132,22 @@ if [ ${flagError} = 0 ] ; then
fi
fi

#--- Select a cluster
if [ ${flagError} = 0 ] ; then
#--- Select kubernetes cluster to work with
flag=0
if [ "${context}" = "" ] ; then
while [ ${flag} = 0 ] ; do
flag=1
printf "\n%bKubernetes cluster :%b\n\n" "${REVERSE}${GREEN}" "${STD}"
printf "%b1%b : core-connectivity\n" "${GREEN}${BOLD}" "${STD}"
printf "%b2%b : supervision\n" "${GREEN}${BOLD}" "${STD}"
printf "%b3%b : marketplace\n" "${GREEN}${BOLD}" "${STD}"
printf "%b4%b : shared-services\n" "${GREEN}${BOLD}" "${STD}"
printf "%b5%b : ha-datastore\n" "${GREEN}${BOLD}" "${STD}"
if [ "${SITE_NAME}" = "fe-int" ] ; then
printf "%b6%b : openshift gcp\n" "${GREEN}${BOLD}" "${STD}"
fi
printf "\n%bYour choice :%b " "${GREEN}${BOLD}" "${STD}" ; read choice
selectCluster "${choice}"
done
else
selectCluster "${context}"
fi
export KUBECONFIG="${HOME}/.kube/config"

#--- Concatenate clusters config files and set current context
export KUBECONFIG="${HOME}/.kube/${K8S_CONTEXT}.yml"
if [ "${K8S_TYPE_CLUSTER}" = "k3s" ] ; then
if [ ! -f ${KUBECONFIG} ] ; then
printf "\n%bERROR : No configuration file for \"${K8S_CLUSTER}\" cluster.%b\n" "${RED}" "${STD}" ; flagError=1
fi
if [ "${context}" = "" ] ; then
contexts="$(kubectl config view -o json | jq -r ".contexts[].name" | sort | pr -3t -W 130)"
printf "\n%bSelect a cluster :%b\n%s" "${REVERSE}${GREEN}" "${STD}" "${contexts}"
printf "\n\n%bYour choice (<Enter> to select none) :%b " "${GREEN}${BOLD}" "${STD}" ; read context
fi

export KUBECONFIG="${HOME}/.kube/config"
if [ ${flagError} = 0 ] ; then
#--- Connect to cluster
if [ "${K8S_TYPE_CLUSTER}" = "openshift" ] ; then
proxyStatus="$(env | grep "https_proxy" | grep "internet")"
if [ "${proxyStatus}" = "" ] ; then
printf "\n%bERROR : You need to set internet proxy to use \"${K8S_CLUSTER}\" cluster.%b\n" "${RED}" "${STD}" ; flagError=1
else
#--- Connect to openshift cluster
OC_ENDPOINT="$(credhub g -n ${CREDHUB_ENDPOINT} -j 2> /dev/null | jq -r '.value')"
message="$(oc login --server=${OC_ENDPOINT})"
printf "\n%b${message}%b " "${YELLOW}${BOLD}" "${STD}"
printf "\n\n%bOpenshift API token :%b " "${GREEN}${BOLD}" "${STD}" ; read -s API_TOKEN
oc login --token=${API_TOKEN} --server=${OC_ENDPOINT} > /dev/null 2>&1
flagError=$?
if [ ${flagError} != 0 ] ; then
printf "\n%bERROR : Invalid token \"${API_TOKEN}\".\n${message}\n%b" "${RED}" "${STD}"
fi

#--- Rename cluster context
current_context="$(kubectl ctx -c)"
kubectl config rename-context ${current_context} ${K8S_CONTEXT} > /dev/null 2>&1
fi
if [ "${context}" != "" ] ; then
check_selected="$(echo "${K8S_CONTEXTS}" | grep "^${context}$")"
if [ "${check_selected}" = "" ] ; then
printf "\n%bERROR : Cluster \"${context}\" unknown...%b\n" "${RED}" "${STD}"
else
#--- Set context to use for selected k3s cluster
kubectl config use-context ${K8S_CONTEXT} > /dev/null 2>&1
flagError=$?
if [ ${flagError} != 0 ] ; then
printf "\n%bERROR : Unable to set context for \"${K8S_CLUSTER}\" cluster.%b\n" "${RED}" "${STD}"
fi
fi

if [ ${flagError} = 0 ] ; then
printf "\n%bCluster \"${K8S_CONTEXT}\" available.%b\n" "${YELLOW}${REVERSE}" "${STD}"
kctx ${context}
fi
fi
fi
fi

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