new: [docker-host] limit docker logs size

precise/host/hooks/install.d/60-docker.sh

@@ -14,13 +14,17 @@ if [ "$exname" == "bash" ]; then
         exit 1
     fi
 fi
-for bin in apt-get grep dpkg file lsb_release; do
+for bin in apt-get grep dpkg file lsb_release yq; do
     if ! type -p "$bin" >/dev/null; then
         echo "Error: \`\`$bin\`\` not found" >&2
         exit 1
     fi
 done
 
+##
+## Install docker
+##
+
 STATIC_DOCKER_URL="https://download.docker.com/linux/static/stable/x86_64"
 
 distro=$(lsb_release -is)

precise/host/hooks/install.d/70-0k.sh

@@ -277,3 +277,22 @@ fi
     apt-get install -y pv buffer < /dev/null
     apt-get install -y postgresql-client </dev/null
 )
+
+
+##
+## Limit docker log size
+##
+
+## XXXvlab: if file changed, it would be nice to reload daemon,
+## as a starter, but containers will need to be re-created to
+## take effect
+touch /etc/docker/daemon.json &&
+yq e -i '
+    .log-driver = "json-file",
+    .log-opts = {
+        "max-size": "10m",
+        "max-file": "5"
+    }
+' /etc/docker/daemon.json || exit 1
+
+