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samutev.sh
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samutev.sh
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#!/bin/bash
#
# Script to launch or delaunch multipass (or gcp) vms with masterless minion(s)
# for easy testing of salt states
#
# 2020-10-21 RO
# 2020-11-18 TS
# 2021-02-10 TS added first poc for gcp capability
# default provide is multipass
PROV=${PROVIDER:-multipass}
PROV=${PROV,,}
# set default values for resource settings (applies to help text and code)
C_DEFAULT=2
M_DEFAULT=1
# gcp image minimum is 10G
GCP_MINIMUM_DISK=10
echo "${PROV}" | grep -q '^multipass$' && D_DEFAULT=4 || D_DEFAULT=${GCP_MINIMUM_DISK}
scriptpath=$(readlink -f "${0}")
# shellcheck source=samutev.conf.template
source "${scriptpath%.*}".conf
if [ ! -d "$salt_base" ]; then
echo
echo " configured salt_base=\"$salt_base\" not found!"
echo " please configure a valid directory"
echo
exit 23
fi
# MEMORY_GB filter is somehow not working -> resort to grep...
echo "${PROV}" | grep -q '^multipass$' || GCP_DEFAULT=$(gcloud compute machine-types list --filter="CPUS=${C_DEFAULT} AND zone=${DEFAULT_GCP_ZONE}" 2>&1 | grep "$(printf %.2f ${M_DEFAULT} | sed 's@,@.@g')"$ | awk '{ print $1 }')
if [ "${PROV}" != "multipass" ]; then
echo "$GCP_DEFAULT" | sed '/^$/d' | wc -c | grep -q '^0$' && echo "WARNING: Invalid default compute resource values for gcp, falling back to '${FALLBACK_GCP_MACH_TYPE}'."
echo "$GCP_DEFAULT" | sed '/^$/d' | wc -c | grep -q '^0$' && GCP_DEFAULT=${FALLBACK_GCP_MACH_TYPE}
fi
echo "${PROV}" | grep -q '^multipass$' && MAIN_DEP=multipass || MAIN_DEP=google-cloud-sdk
echo "${PROV}" | grep -q '^multipass$' && SNAP_PARA="" || SNAP_PARA=" --classic\n Run 'gcloud init' afterwards"
snap list ${MAIN_DEP} >/dev/null 2>&1
RET=$?
if [ ${RET} -ne 0 ]; then
echo
echo " please install ${MAIN_DEP} to use samutev with provider $PROV"
echo -e " => snap install ${MAIN_DEP}${SNAP_PARA}"
echo
exit 42
fi
# TBD check that gcloud init was done
if [ "${PROV}" != "multipass" ] && [ "$(apt list --installed 2>&1| grep -c -e nfs-kernel-server -e autossh)" != "2" ]; then
echo
echo " please install nfs-kernel-server and autossh to use samutev with provider $PROV"
echo " => apt install -y nfs-kernel-server portmap autossh"
echo
exit 255
fi
# default value for multipass, latest LTS, currently: "focal"
# default value for gcp, latest LTS, currently *hardcoded* below to focal,minimal,lts -> "ubuntu-minimal-2004-lts"
echo "${PROV}" | grep -q '^multipass$' && \
CODENAME_OF_LTS=$(multipass find | grep LTS | grep lts | awk '{ print $2 }' | sed 's@,@\n@g' | grep -v lts | tail -n1) \
|| \
CODENAME_OF_LTS=$(gcloud compute images list --filter="family=ubuntu" | grep lts | grep focal | grep minimal | awk '{ print $3}')
function help() {
scriptname="$(basename "${0}")"
echo "Usage:"
echo " ${scriptname} -h display this help message"
echo " ${scriptname} [-r <release>] -n <VM> new <VM> with masterless minion"
echo " ${scriptname} [-r <release>] -s <VM> new <VM> with minion and salt master, first vm => saltmaster, minimum of 2 vms"
echo " ${scriptname} -d <VM> delete <VM>"
echo " ${scriptname} -l list vms"
echo
echo " <release>: default is 'lts' aliased to '${CODENAME_OF_LTS}'"
echo " Other available options are:"
if echo "${PROV}" | grep -q '^multipass$'; then \
multipass find | grep LTS | awk '{ print $1" (or "$2")" }' | sed 's@,@ or @g' | sed 's@^@ - @g' | sed 's@daily:@@g' ;else \
gcloud compute images list --filter="family=ubuntu" | grep -e lts | grep minimal | awk '{ print $3}' | sed 's@^@ - @g';fi
echo
echo "Examples:"
echo " ${scriptname} -n testvm launch new testvm as masterless minion"
echo " ${scriptname} -n 'testvm1 testvm2 testvm3' launch multiple new testvms as masterless minions"
echo " ${scriptname} -n 'testvm1:c2:m1:d3 testvm2:c4:m2' launch multiple new testvms as masterless minions"
echo " with special settings for cpu, memory and disk:"
echo " - testvm1 with: c2 => 2 cpu, m1 => 1GB memory and d3 => 3GB disk"
echo " - testvm2 with: c4 => 4 cpu, m2 => 2GB memory"
echo " (defaults are c${C_DEFAULT} m${M_DEFAULT} d${D_DEFAULT})"
echo
echo " ${scriptname} -s 'salt-master1 testvm1 testvm2 testvm3' launch a saltmaster with multiple new testvms"
echo " - First vm = saltmaster"
echo " - Minimum = 2 vms"
echo " ${scriptname} -s 'salt-master1:c2:m2:d6 testvm1' same as above but with custom resource settings"
echo
echo " ${scriptname} -d testvm delaunch/delete testvm"
echo " ${scriptname} -d 'testvm1 testvm2 testvm3' delaunch/delete multiple testvms"
echo
}
# Parse options
#PARAMS=""
IMAGE=""
IMAGE_INFO=""
IMAGE_CODE=""
unset MasterlessVMs_2_CREATE MasterVMs_2_CREATE VMs_2_DELETE
while (("$#")); do
case "$1" in
-h | --help)
help
exit 0
;;
-n | --new)
if [ -n "$2" ] && [ "${2:0:1}" != "-" ]; then
MasterlessVMs_2_CREATE=$2
shift 2
else
echo "Error: Argument for $1 is missing" >&2
exit 1
fi
;;
-s | --new-with-saltmaster)
if [ -n "$2" ] && [ "${2:0:1}" != "-" ]; then
MasterVMs_2_CREATE=$2
counter=0
for i in $MasterVMs_2_CREATE; do counter=$((counter + 1)); done
if [ $counter -lt 2 ]; then
echo "Error: need minimum 2 vms - 1 saltmaster-vm and 1 minion-vm"
exit 2
fi
shift 2
else
echo "Error: Argument for $1 is missing" >&2
exit 1
fi
;;
-d | --delete)
if [ -n "$2" ] && [ "${2:0:1}" != "-" ]; then
VMs_2_DELETE=$2
shift 2
else
echo "Error: Argument for $1 is missing" >&2
exit 1
fi
;;
-l | --list)
if echo "${PROV}" | grep -q '^multipass$'; then \
multipass list; else \
gcloud compute instances list; fi
shift
;;
-r)
if [ -n "$2" ] && [ "${2:0:1}" != "-" ]; then
IMAGE="$2"
echo "${PROV}" | grep -q '^multipass$' && VALID_IMAGE=$(multipass find | grep LTS | grep -c "${IMAGE}" | grep -q '^0$' && echo not found || echo found) ||\
VALID_IMAGE=$(gcloud compute images list --filter="family=ubuntu" | grep -e lts | grep minimal | awk '{ print $3}' | grep -c "${IMAGE}" | grep -q '^0$' && echo not found || echo found)
if [ "${VALID_IMAGE}" == "not found" ]; then
echo "Error: Argument '${IMAGE}' for $1 is invalid" >&2
exit 2
fi
shift 2
else
echo "Error: Argument for $1 is missing" >&2
exit 1
fi
;;
--* | -*=) # unsupported flags
echo "Error: Unsupported flag $1" >&2
echo
help
exit 1
;;
*) # preserve positional arguments
#PARAMS="$PARAMS $1"
#shift
help
exit 0
;;
esac
done
IMAGE=${IMAGE:-${CODENAME_OF_LTS}}
IMAGE_INFO=" and image '${IMAGE}'"
echo "${IMAGE}" | grep -c lts | grep -q '^1$' && IMAGE=${CODENAME_OF_LTS}
echo "${PROV}" | grep -q '^multipass$' && \
IMAGE=$(multipass find | grep LTS | grep "${IMAGE}" | awk '{ print $2 }' | sed 's@,@\n@' | grep -v lts | head -n1) || \
OS_CODENAME=$(gcloud compute images list --filter="family=ubuntu" | grep -e lts | grep minimal | grep "${IMAGE}" | awk '{ print $1 }' | awk -F- '{ print $4 }')
echo "${PROV}" | grep -q '^multipass$' && \
IMAGE_CODE=$(multipass find | grep LTS | grep "${IMAGE}" | awk '{ print $1 }' | sed 's@daily:@@g') || \
IMAGE_CODE=$(echo "$IMAGE" | awk -F- '{ split($3, chars, ""); print chars[1]chars[2]"."chars[3]chars[4] }')
# set positional arguments in their proper place
#eval set -- "$PARAMS"
#echo PARAMS=$PARAMS
function create_test_VMs() {
# TBD before doing anything: check all names whether they exist already (shared project!)
TYPE=$1
VMs="$2"
if [ "xxx${3}xxx" != "xxxxxx" ]; then MASTER_IP="$3"; fi
# build needed cloudinit-file
case $TYPE in
"masterless")
# shellcheck disable=SC2154
echo "$CLOUDINIT_1_header" "$CLOUDINIT_2_masterless" "$CLOUDINIT_3_user" > tmp_cloudinit.$$
;;
"minion")
# shellcheck disable=SC2154
echo "$CLOUDINIT_1_header" "$CLOUDINIT_2_minion" "$CLOUDINIT_3_user" | sed -e "s/xxxIPxxx/$MASTER_IP/" > tmp_cloudinit.$$
;;
"master")
# shellcheck disable=SC2154
echo "$CLOUDINIT_1_header" "$CLOUDINIT_2_master" "$CLOUDINIT_3_user" > tmp_cloudinit.$$
;;
esac
# switch cloud-init config as $RELEASE variables et al sadly seem to be not yet available in this cloudinit version
sed -i "s@VERSION_ID@$IMAGE_CODE@g" tmp_cloudinit.$$
if echo "${PROV}" | grep -q '^multipass$'; then sed -i "s@VERSION_CODENAME@$IMAGE@g" tmp_cloudinit.$$; else \
sed -i "s@VERSION_CODENAME@$OS_CODENAME@g" tmp_cloudinit.$$; fi
AUTOSSH_MPORT=8000
# create VMs
for VMinput in $VMs; do
SECONDS=0
unset aCPU CPU aMEM MEM aDISK DISK
VM="${VMinput//:*/}"
if echo "$VMinput" | grep -q :; then
# shellcheck disable=SC2001
for i in $(echo "${VMinput#*:}" | sed -e "s/:/ /g"); do
case $i in
c*)
aCPU=${i/c/}
;;
m*)
aMEM=${i/m/}
;;
d*)
aDISK=${i/d/}
;;
esac
done
fi
CPU=${aCPU:-$C_DEFAULT}
MEM=${aMEM:-$M_DEFAULT}
DISK=${aDISK:-$D_DEFAULT}
if [ "${PROV}" != "multipass" ]; then
GCP_MACH_TYPE=$(gcloud compute machine-types list --filter="CPUS=${CPU} AND zone=${DEFAULT_GCP_ZONE}" 2>&1 | grep "$(printf %.2f "${MEM}" | sed 's@,@.@g')"$ | awk '{ print $1 }')
echo "$GCP_MACH_TYPE" | sed '/^$/d' | wc -c | grep -q '^0$' && echo "WARNING: Invalid compute resource values for gcp (VM '$VM'), falling back to '${FALLBACK_GCP_MACH_TYPE}'."
echo "$GCP_MACH_TYPE" | sed '/^$/d' | wc -c | grep -q '^0$' && GCP_MACH_TYPE=${FALLBACK_GCP_MACH_TYPE}
if [ "$DISK" -lt ${GCP_MINIMUM_DISK} ]; then
echo "WARNING: Disk size '$DISK' (VM '$VM') is below minimum of '${GCP_MINIMUM_DISK}' (for gcp) using '${GCP_MINIMUM_DISK}' instead"
DISK=${GCP_MINIMUM_DISK}
fi
fi
echo "launching ${VM} ($TYPE with cpu=$CPU mem=${MEM}G disk=${DISK}G${IMAGE_INFO})"
if echo "${PROV}" | grep -q '^multipass$'; then \
multipass launch --cpus "${CPU}" --disk "${DISK}"G --memory "${MEM}"G --name "${VM}" --cloud-init tmp_cloudinit.$$ "${IMAGE}"; else \
gcloud compute instances create "${VM}" --zone="${DEFAULT_GCP_ZONE}" --machine-type="$GCP_MACH_TYPE" --image-project=ubuntu-os-cloud --image-family="${IMAGE}" --boot-disk-type=pd-standard --boot-disk-size="${DISK}GB" --metadata-from-file user-data=tmp_cloudinit.$$; fi
RET=$?
if [ "$TYPE" != "minion" ]; then
if [ "${PROV}" != "multipass" ]; then
VMIP=$(gcloud compute instances list --filter="NAME=$VM" | awk '{ print $5 }' | grep -v IP)
until ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "root@${VMIP}" whoami 2>/dev/null; do echo "Waiting for vm to be ready..." && sleep 10; done
EXEC_CMD_PREFIX="ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@${VMIP}"
if [ $RET = 0 ]; then
# nfs exports
# backup
sudo cp -p /etc/exports{,.$$}
# remove pre-existing entries for $VM
sudo sed -i "/^.*# samutev .* $VM\$/d" /etc/exports
# add new exports
{
echo "${salt_base}/salt-states localhost(insecure,rw,sync,no_subtree_check,no_root_squash) # samutev $TYPE $VM"
echo "${salt_base}/salt-pillars localhost(insecure,rw,sync,no_subtree_check,no_root_squash) # samutev $TYPE $VM"
echo "${salt_base}/localstore localhost(insecure,rw,sync,no_subtree_check,no_root_squash) # samutev $TYPE $VM"
echo "${salt_base}/salt-dev-pillars localhost(insecure,rw,sync,no_subtree_check,no_root_squash) # samutev $TYPE $VM"
} >> /tmp/exports.$$
# In a masterless scenario this is executed multiple times. Adding the same export >1 time makes NFS fail -> do it only once
grep -q "${salt_base}/salt-states" /etc/exports || sudo bash -c "cat /tmp/exports.$$ >> /etc/exports"
# set active and remove backup or revert -> TBD terminate (and cleanup?) here when export mgmt fails
# TBD why does exportfs -a (instead of restart, which would be better) doesn't remove removed exports?
if sudo systemctl restart nfs-kernel-server; then sudo rm -f /etc/exports.$$; else sudo cp -p /etc/exports.$$ /etc/exports; fi
fi
else
EXEC_CMD_PREFIX="multipass exec ${VM}"
fi
case $TYPE in
"masterless")
echo "${PROV}" | grep -q '^multipass$' || autossh -M $AUTOSSH_MPORT -f -N -R 2049:localhost:2049 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "root@${VMIP}"
AUTOSSH_MPORT=$((AUTOSSH_MPORT+2))
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/salt-states
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/salt-pillars
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/salt-states "${VM}":/srv/salt/salt-states; else \
${EXEC_CMD_PREFIX} -- "while [ ! -f /var/lib/cloud/instance/boot-finished ]; do echo Waiting for cloud-init to finish... && sleep 5; done && mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/salt-states /srv/salt/salt-states"; fi
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/salt-pillars "${VM}":/srv/salt/salt-pillars; else \
${EXEC_CMD_PREFIX} -- "mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/salt-pillars /srv/salt/salt-pillars"; fi
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/localstore
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/localstore "${VM}":/srv/salt/localstore; else \
${EXEC_CMD_PREFIX} -- "mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/localstore /srv/salt/localstore"; fi
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/salt-dev-pillars
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/salt-dev-pillars "${VM}":/srv/salt/salt-dev-pillars; else \
${EXEC_CMD_PREFIX} -- "mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/salt-dev-pillars /srv/salt/salt-dev-pillars"; fi
${EXEC_CMD_PREFIX} -- sudo systemctl restart salt-minion
;;
"minion")
${EXEC_CMD_PREFIX} -- sudo systemctl restart salt-minion
;;
"master")
echo "${PROV}" | grep -q '^multipass$' || autossh -M $AUTOSSH_MPORT -f -N -R 2049:localhost:2049 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null "root@${VMIP}"
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/salt-states
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/salt-pillars
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/salt-states "${VM}":/srv/salt/salt-states; else \
${EXEC_CMD_PREFIX} -- "while [ ! -f /var/lib/cloud/instance/boot-finished ]; do echo Waiting for cloud-init to finish... && sleep 5; done && mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/salt-states /srv/salt/salt-states"; fi
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/salt-pillars "${VM}":/srv/salt/salt-pillars; else \
${EXEC_CMD_PREFIX} -- "mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/salt-pillars /srv/salt/salt-pillars"; fi
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/localstore
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/localstore "${VM}":/srv/salt/localstore; else \
${EXEC_CMD_PREFIX} -- "mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/localstore /srv/salt/localstore"; fi
${EXEC_CMD_PREFIX} -- sudo mkdir -p /srv/salt/salt-dev-pillars
if echo "${PROV}" | grep -q '^multipass$'; then multipass mount "${salt_base}"/salt-dev-pillars "${VM}":/srv/salt/salt-dev-pillars; else \
${EXEC_CMD_PREFIX} -- "mount -t nfs -o proto=tcp localhost:\"${salt_base}\"/salt-dev-pillars /srv/salt/salt-dev-pillars"; fi
${EXEC_CMD_PREFIX} -- sudo systemctl restart salt-master
;;
esac
echo
fi
if echo "${PROV}" | grep -q '^multipass$'; then multipass info "${VM}"; else \
gcloud compute instances describe "${VM}" | grep -e ^name -e natIP -e diskSize -e ubuntu-os-cloud | sed 's@^name:@a_name:@g' | sed 's@^ - https.*licenses/@OS: @g' | sed 's@^ *@@g' | sort | sed 's@^a_@@g'; fi
duration=$SECONDS
echo "launched ${VM} in $((duration / 60)) minutes and $((duration % 60)) seconds."
echo
done
rm -f tmp_cloudinit.$$
echo
}
function delete_and_purge_VMs() {
# TBD cleanup /etc/exports when using gcp (upon recreation there is a cleanup -> so low prio for now)
time_start=$(date +%s)
for VMin in ${1}; do
SECONDS=0
VM=${VMin%%:*}
echo "delaunching $VM"
echo
if echo "${PROV}" | grep -q '^multipass$'; then multipass delete "${VM}"; else \
gcloud compute instances delete -q --delete-disks=all "${VM}"; fi
if [ "${PROV}" != "multipass" ]; then
killall autossh > /dev/null 2>&1
sudo cp -p /etc/exports{,_preremove.$$}
sudo sed -i "/^.*# samutev .* $VM\$/d" /etc/exports
if sudo systemctl restart nfs-kernel-server; then sudo rm -f /etc/exports_preremove.$$; else sudo cp -p /etc/exports_preremove.$$ /etc/exports; fi
fi
duration=$SECONDS
echo "delaunched $VM in $((duration / 60)) minutes and $((duration % 60)) seconds."
echo
done
echo "${PROV}" | grep -q '^multipass$' && multipass purge
time_end=$(date +%s)
alltogether=$(date -d "0 $time_end seconds - $time_start seconds" +'%M:%S')
echo "alltogether: $alltogether min."
echo
if echo "${PROV}" | grep -q '^multipass$'; then multipass list; else \
gcloud compute instances list; fi
echo
}
# --- main
# make sure there is no trailing / - important for some NFS export operations
# below shellcheck disable is because the suggested alternative doesn't support regex for line end matching which is a requirement here
# shellcheck disable=SC2001
salt_base=$(echo "${salt_base}" | sed 's@/$@@g')
if [ ! -d "${salt_base}"/salt-dev-pillars ]; then mkdir "${salt_base}"/salt-dev-pillars; fi
# shellcheck disable=SC2154
if [ ! -f "${salt_base}"/salt-dev-pillars/top.sls ]; then echo "$DEVPILLARS_top" > "${salt_base}"/salt-dev-pillars/top.sls; fi
if [ ! -f "${salt_base}"/salt-dev-pillars/devpillars.sls ]; then echo "$DEVPILLARS" > "${salt_base}"/salt-dev-pillars/devpillars.sls; fi
if [ ! -d "${salt_base}"/localstore ]; then mkdir "${salt_base}"/localstore; fi
if [ -n "${MasterlessVMs_2_CREATE+x}" ]; then
time_start=$(date +%s)
create_test_VMs masterless "${MasterlessVMs_2_CREATE}"
time_end=$(date +%s)
alltogether=$(date -d "0 $time_end seconds - $time_start seconds" +'%M:%S')
echo "alltogether: $alltogether min."
echo
# below shellcheck is disabled because pgrep ist not an alternative if you want to display the full command line (in contrast to information extraction)
# shellcheck disable=SC2009
echo "${PROV}" | grep -q '^multipass$' || \
echo -e "HINT: ssh tunnels are not maintained across reboots yet - re-establish them after reboot by running (foreach IP in <master IP or masterless minion IPs>):\n $(ps -ef | grep '[a]utossh' | sed 's@^.*/autossh@autossh -f@g' | grep "root")"
fi
if [ -n "${MasterVMs_2_CREATE+x}" ]; then
time_start=$(date +%s)
MASTER=$(echo "$MasterVMs_2_CREATE" | head -n1 | cut -d ' ' -f1)
MINION=$(echo "$MasterVMs_2_CREATE" | head -n1 | cut -d ' ' -f2-)
create_test_VMs master "${MASTER}"
echo "${PROV}" | grep -q '^multipass$' && NEW_MASTER_IP=$(multipass info "${MASTER%%:*}" | grep IPv4 | awk -F: '{print $2}' | xargs) || \
NEW_MASTER_IP=$(gcloud compute instances list --filter="NAME=$VM" | awk '{ print $5 }' | grep -v IP)
#echo NEW_MASTER_IP=$NEW_MASTER_IP
create_test_VMs minion "${MINION}" "$NEW_MASTER_IP"
MINION_CTR=$(for VMinput in ${MINION}; do VM="${VMinput//:*/}" ; echo "${VM}"; done | wc -l)
ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@"$NEW_MASTER_IP" 'while [ "$(find /etc/salt/pki/master/minions_pre/ -type f | wc -l)" != "'"${MINION_CTR}"'" ]; do echo Waiting for minions... && sleep 5; done; salt-key -A -y && echo && salt-key -L'
time_end=$(date +%s)
alltogether=$(date -d "0 $time_end seconds - $time_start seconds" +'%M:%S')
echo
echo "alltogether: $alltogether min."
echo
echo "READY to go:"
echo " ssh root@$NEW_MASTER_IP"
echo " salt '*' test.ping"
echo
# TBD improve this
# below shellcheck is disabled because pgrep ist not an alternative if you want to display the full command line (in contrast to information extraction)
# shellcheck disable=SC2009
echo "${PROV}" | grep -q '^multipass$' || \
echo -e "HINT: ssh tunnels are not maintained across reboots yet - re-establish them after reboot by running (foreach IP in <master IP or masterless minion IPs>):\n $(ps -ef | grep '[a]utossh' | sed 's@^.*/autossh@autossh -f@g' | grep "root")"
fi
if [ -n "${VMs_2_DELETE+x}" ]; then
delete_and_purge_VMs "$VMs_2_DELETE"
fi
# cleanup
rm -f tmp_cloudinit.*