Matthew Heler 35cce6cb43 Switch Ceph to IPs when DNS is down
Add helper scripts that are called by a POD to switch
Ceph from DNS to IPs. This POD will loop every 5 minutes
to catch cases where the DNS might be unavailable.

On a POD's Service start switch ceph.conf to using IPs rather
then DNS.

Change-Id: I402199f55792ca9f5f28e436ff44d4a6ac9b7cf9
2018-12-03 10:51:37 -06:00

74 lines
2.4 KiB
Smarty

#!/bin/bash
set -ex
: "${CEPH_GET_ADMIN_KEY:=0}"
: "${MGR_NAME:=$(uname -n)}"
: "${MGR_KEYRING:=/var/lib/ceph/mgr/${CLUSTER}-${MGR_NAME}/keyring}"
: "${ADMIN_KEYRING:=/etc/ceph/${CLUSTER}.client.admin.keyring}"
: "${CEPH_CONF:="/etc/ceph/${CLUSTER}.conf"}"
if [[ ! -e ${CEPH_CONF}.template ]]; then
echo "ERROR- ${CEPH_CONF}.template must exist; get it from your existing mon"
exit 1
else
ENDPOINT=$(kubectl get endpoints ceph-mon -n ${NAMESPACE} -o json | awk -F'"' -v port=${MON_PORT} '/ip/{print $4":"port}' | paste -sd',')
if [[ ${ENDPOINT} == "" ]]; then
/bin/sh -c -e "cat ${CEPH_CONF}.template | tee ${CEPH_CONF}" || true
else
/bin/sh -c -e "cat ${CEPH_CONF}.template | sed 's/mon_host.*/mon_host = ${ENDPOINT}/g' | tee ${CEPH_CONF}" || true
fi
fi
if [ ${CEPH_GET_ADMIN_KEY} -eq 1 ]; then
if [[ ! -e ${ADMIN_KEYRING} ]]; then
echo "ERROR- ${ADMIN_KEYRING} must exist; get it from your existing mon"
exit 1
fi
fi
# Create a MGR keyring
rm -rf $MGR_KEYRING
if [ ! -e "$MGR_KEYRING" ]; then
# Create ceph-mgr key
timeout 10 ceph --cluster "${CLUSTER}" auth get-or-create mgr."${MGR_NAME}" mon 'allow profile mgr' osd 'allow *' mds 'allow *' -o "$MGR_KEYRING"
chown --verbose ceph. "$MGR_KEYRING"
chmod 600 "$MGR_KEYRING"
fi
echo "SUCCESS"
ceph --cluster "${CLUSTER}" -v
# Env. variables matching the pattern "<module>_" will be
# found and parsed for config-key settings by
# ceph config-key set mgr/<module>/<key> <value>
MODULES_TO_DISABLE=`ceph mgr dump | python -c "import json, sys; print ' '.join(json.load(sys.stdin)['modules'])"`
for module in ${ENABLED_MODULES}; do
# This module may have been enabled in the past
# remove it from the disable list if present
MODULES_TO_DISABLE=${MODULES_TO_DISABLE/$module/}
options=`env | grep ^${module}_ || true`
for option in ${options}; do
#strip module name
option=${option/${module}_/}
key=`echo $option | cut -d= -f1`
value=`echo $option | cut -d= -f2`
ceph --cluster "${CLUSTER}" config-key set mgr/$module/$key $value
done
ceph --cluster "${CLUSTER}" mgr module enable ${module} --force
done
for module in $MODULES_TO_DISABLE; do
ceph --cluster "${CLUSTER}" mgr module disable ${module}
done
echo "SUCCESS"
# start ceph-mgr
exec /usr/bin/ceph-mgr \
--cluster "${CLUSTER}" \
--setuser "ceph" \
--setgroup "ceph" \
-d \
-i "${MGR_NAME}"