cassandra service: init

The module will configure a Cassandra server with common options being
tweakable. Included is also a test which will spin up 3 nodes and
verify that the cluster can be formed, broken, and repaired.

1 files changed, 68 insertions, 0 deletions

diff --git a/nixos/tests/cassandra.nix b/nixos/tests/cassandra.nix
new file mode 100644
index 0000000000000..b729e6b158bcb
--- /dev/null
+++ b/nixos/tests/cassandra.nix
@@ -0,0 +1,68 @@
+import ./make-test.nix ({ pkgs, ...}:
+let
+  user = "cassandra";
+  nodeCfg = nodes: selfIP: cassandraOpts:
+    {
+      services.cassandra = {
+        enable = true;
+        listenAddress = selfIP;
+        rpcAddress = "0.0.0.0";
+        seeds = [ "192.168.1.1" ];
+        package = pkgs.cassandra_2_0;
+        jre = pkgs.openjdk;
+        clusterName = "ci ahoy";
+        authenticator = "PasswordAuthenticator";
+        authorizer = "CassandraAuthorizer";
+        user = user;
+      } // cassandraOpts;
+      nixpkgs.config.allowUnfree = true;
+      virtualisation.memorySize = 1024;
+    };
+
+in
+{
+  name = "cassandra-ci";
+
+  nodes = {
+    cass0 = {pkgs, config, nodes, ...}: nodeCfg nodes "192.168.1.1" {};
+    cass1 = {pkgs, config, nodes, ...}: nodeCfg nodes "192.168.1.2" {};
+    cass2 = {pkgs, config, nodes, ...}: nodeCfg nodes "192.168.1.3" {
+      extraParams = [
+        ''JVM_OPTS="$JVM_OPTS -Dcassandra.replace_address=192.168.1.2"''
+      ];
+      listenAddress = "192.168.1.3";
+    };
+  };
+
+  testScript = ''
+    subtest "start seed", sub {
+      $cass0->waitForUnit("cassandra.service");
+      $cass0->waitForOpenPort(9160);
+      $cass0->execute("echo show version | cqlsh localhost -u cassandra -p cassandra");
+      sleep 2;
+      $cass0->succeed("echo show version | cqlsh localhost -u cassandra -p cassandra");
+      $cass1->start;
+    };
+    subtest "cassandra user/group", sub {
+      $cass0->succeed("id \"${user}\" >/dev/null");
+      $cass1->succeed("id \"${user}\" >/dev/null");
+    };
+    subtest "bring up cassandra cluster", sub {
+      $cass1->waitForUnit("cassandra.service");
+      $cass0->waitUntilSucceeds("nodetool status | grep -c UN  | grep 2");
+    };
+    subtest "break and fix node", sub {
+      $cass0->block;
+      $cass0->waitUntilSucceeds("nodetool status | grep -c DN  | grep 1");
+      $cass0->unblock;
+      $cass0->waitUntilSucceeds("nodetool status | grep -c UN  | grep 2");
+    };
+    subtest "replace crashed node", sub {
+      $cass1->crash;
+      $cass2->start;
+      $cass2->waitForUnit("cassandra.service");
+      $cass0->waitUntilFails("nodetool status | grep UN  | grep 192.168.1.2");
+      $cass0->waitUntilSucceeds("nodetool status | grep UN | grep 192.168.1.3");
+    };
+  '';
+})