[rstudio]Fix for Debian 10 backports repo issue. (#1171)

rstudio/rstudio.sh

@@ -47,6 +47,28 @@ fi
 RSTUDIO_SERVER_PACKAGE=rstudio-server-${RSTUDIO_SERVER_VERSION}-amd64.deb
 RSTUDIO_SERVER_PACKAGE_URI=${RSTUDIO_SERVER_URL}/${RSTUDIO_SERVER_PACKAGE}
 
+# Detect dataproc image version from its various names
+if (! test -v DATAPROC_IMAGE_VERSION) && test -v DATAPROC_VERSION; then
+  DATAPROC_IMAGE_VERSION="${DATAPROC_VERSION}"
+fi
+
+function remove_old_backports {
+  # This script uses 'apt-get update' and is therefore potentially dependent on
+  # backports repositories which have been archived.  In order to mitigate this
+  # problem, we will remove any reference to backports repos older than oldstable
+
+  # https://github.com/GoogleCloudDataproc/initialization-actions/issues/1157
+  oldstable=$(curl -s https://deb.debian.org/debian/dists/oldstable/Release | awk '/^Codename/ {print $2}');
+  stable=$(curl -s https://deb.debian.org/debian/dists/stable/Release | awk '/^Codename/ {print $2}');
+
+  matched_files="$(grep -rsil '\-backports' /etc/apt/sources.list*)"
+  if [[ -n "$matched_files" ]]; then
+    for filename in "$matched_files"; do
+      grep -e "$oldstable-backports" -e "$stable-backports" "$filename" || \
+        sed -i -e 's/^.*-backports.*$//' "$filename"
+    done
+  fi
+}
 
 function update_apt_get() {
   for ((i = 0; i < 10; i++)); do
@@ -82,6 +104,9 @@ function run_with_retries() {
 }
 
 if [[ "${ROLE}" == 'Master' ]]; then
+  if [[ ${OS_ID} == debian ]] && [[ $(echo "${DATAPROC_IMAGE_VERSION} <= 2.1" | bc -l) == 1 ]]; then
+    remove_old_backports
+  fi
   if [[ -n ${USER_PASSWORD} ]] && ((${#USER_PASSWORD} < 7)); then
     echo "You must specify a password of at least 7 characters for user '$USER_NAME' through metadata 'rstudio-password'."
     exit 1
@@ -97,7 +122,7 @@ if [[ "${ROLE}" == 'Master' ]]; then
 
   # Install RStudio Server
   REPOSITORY_KEY=95C0FAF38DB3CCAD0C080A7BDC78B2DDEABC47B7
-  run_with_retries apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys ${REPOSITORY_KEY}
+  run_with_retries apt-key adv --keyserver hkp://pool.sks-keyservers.net:80 --recv-keys ${REPOSITORY_KEY}
   # https://cran.r-project.org/bin/linux/ubuntu/
   if [[ "${OS_ID}" == "ubuntu" ]]; then
     curl -fsSL --retry-connrefused --retry 10 --retry-max-time 30 https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | tee -a /etc/apt/trusted.gpg.d/cran_ubuntu_key.asc