prepare for 0.5.0 release (#151)

* prepare for 0.5.0 release

* update CHANGELOG

CHANGELOG.md

@@ -1,5 +1,36 @@
 # Next (master/unreleased)
 
+# v0.5.0 (2020-08-12)
+
+- [FEATURE] A [scrape targets API](https://github.com/grafana/agent/blob/master/docs/api.md#list-current-scrape-targets)
+  has been added to show every target the Agent is currently scraping, when it
+  was last scraped, how long it took to scrape, and errors from the last scrape,
+  if any. (@rfratto)
+
+- [FEATURE]  "Shared Instance Mode" is the new default mode for spawning
+  Prometheus instances, and will improve CPU and memory usage for users of
+  integrations and the scraping service. (@rfratto)
+
+- [ENHANCEMENT] Memory stability and utilization of the WAL has been improved,
+  and the reported number of active series in the WAL will stop double-counting
+  recently churned series. (@rfratto)
+
+- [ENHANCEMENT] Changing scrape_configs and remote_write configs for an instance
+  will now be dynamically applied without restarting the instance. This will
+  result in less missing metrics for users of the scraping service that change a
+  config. (@rfratto)
+
+- [ENHANCEMENT] The Tanka configuration now uses k8s-alpha. (@duologic)
+
+- [BUGFIX] The Tanka configuration will now also deploy a single-replica
+  deployment specifically for scraping the Kubernetes API. This deployment acts
+  together with the Daemonset to scrape the full cluster and the control plane.
+  (@gotjosh)
+
+- [BUGFIX] The node_exporter filesystem collector will now work on Linux systems
+  without needing to manually set the blocklist and allowlist of filesystems.
+  (@rfratto)
+
 # v0.4.0 (2020-06-18)
 
 - [FEATURE] Support for integrations has been added. Integrations can be any

docs/configuration-reference.md

@@ -1486,7 +1486,7 @@ docker run \
   -v "/:/host:ro,rslave" \
   -v /tmp/agent:/etc/agent \
   -v /path/to/config.yaml:/etc/agent-config/agent.yaml \
-  grafana/agent:v0.4.0 \
+  grafana/agent:v0.5.0 \
   --config.file=/etc/agent-config/agent.yaml \
   --integrations.node_exporter.rootfs-path=/host
 ```
@@ -1501,7 +1501,7 @@ metadata:
   name: agent 
 spec:
   containers:
-  - image: grafana/agent:v0.4.0
+  - image: grafana/agent:v0.5.0
     name: agent 
     args:
     - --config.file=/etc/agent-config/agent.yaml 

docs/getting-started.md

@@ -46,7 +46,7 @@ Currently, there are five ways to install the agent:
 ### Docker Container
 
 ```
-docker pull grafana/agent:v0.4.0
+docker pull grafana/agent:v0.5.0
 ```
 
 ### Kubernetes Install Script
@@ -57,7 +57,7 @@ Grafana Cloud Agent Kubernetes deployment manifest (requires `envsubst` (GNU get
 > **Warning**: Always verify scripts from the internet before running them.
 
 ```
-/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/grafana/agent/v0.4.0/production/kubernetes/install.sh)" | kubectl apply -f -
+/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/grafana/agent/v0.5.0/production/kubernetes/install.sh)" | kubectl apply -f -
 ```
 
 ### Kubernetes Manifest
@@ -186,7 +186,7 @@ path of your Agent's YAML configuration file.
 docker run \
   -v /tmp/agent:/etc/agent \
   -v /path/to/config.yaml:/etc/agent-config/agent.yaml \
-  grafana/agent:v0.4.0
+  grafana/agent:v0.5.0
 ```
 
 ### Locally

production/README.md

@@ -35,7 +35,7 @@ docker run \
   -v /tmp/agent:/etc/agent \
   -v /path/to/config.yaml:/etc/agent-config/agent.yaml \
   --entrypoint "/bin/agent -config.file=/etc/agent-config/agent.yaml -prometheus.wal-directory=/etc/agent/data"
-  grafana/agent:v0.4.0
+  grafana/agent:v0.5.0
 ```
 
 ## Running the Agent locally

production/kubernetes/README.md

@@ -18,7 +18,7 @@ Here's a one-line script to copy and paste to install the Agent on
 Kubernetes (requires `envsubst` (GNU gettext)):
 
 ```
-/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/grafana/agent/v0.4.0/production/kubernetes/install.sh)" | kubectl apply -f -
+/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/grafana/agent/v0.5.0/production/kubernetes/install.sh)" | kubectl apply -f -
 ```
 
 ## Manually Applying

production/kubernetes/agent.yaml

@@ -313,7 +313,7 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: spec.nodeName
-        image: grafana/agent:v0.4.0
+        image: grafana/agent:v0.5.0
         imagePullPolicy: IfNotPresent
         name: agent
         ports:
@@ -362,7 +362,7 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: spec.nodeName
-        image: grafana/agent:v0.4.0
+        image: grafana/agent:v0.5.0
         imagePullPolicy: IfNotPresent
         name: agent
         ports:

production/kubernetes/build/template/main.jsonnet

@@ -2,7 +2,7 @@ local agent = import 'grafana-agent/grafana-agent.libsonnet';
 
 agent {
   _images+:: {
-    agent: 'grafana/agent:v0.4.0',
+    agent: 'grafana/agent:v0.5.0',
   },
 
   _config+:: {

production/kubernetes/install.sh

@@ -31,7 +31,7 @@ check_installed() {
 check_installed curl
 check_installed envsubst
 
-MANIFEST_BRANCH=v0.4.0
+MANIFEST_BRANCH=v0.5.0
 MANIFEST_URL=${MANIFEST_URL:-https://raw.githubusercontent.com/grafana/agent/${MANIFEST_BRANCH}/production/kubernetes/agent.yaml}
 
 REMOTE_WRITE_USERNAME_SET=0