docker - Rethinkdb SIGTERM，关闭

Question

我正在 Docker 中运行 RethinkDB。在我们搬到新的数据中心之前，一切都运行良好一段时间(但我不确定这是否与搬迁有关)。这是正在发生的事情。

我启动了 rethinkdb 容器，一段时间内一切运行良好。一段时间后(一小时或更长时间)我在 Docker 日志中看到以下内容(以黄色突出显示):

我完全不知道为什么它会随机从系统收到一个 SIGTERM。任何想法将不胜感激!

编辑:我正在添加 SIGTERM 的日志文件片段。根据时间戳，似乎没有任何模式。

2015-07-15T16:15:02.888762613 663165.661585s notice: Server got SIGTERM from pid 0, uid 0; shutting down...
2015-07-17T17:02:11.562306701 13322.914561s notice: Server got SIGTERM from pid 0, uid 0; shutting down...
2015-07-19T18:31:12.499022237 96786.220054s notice: Server got SIGTERM from pid 0, uid 0; shutting down...
2015-07-20T13:52:44.493304030 69690.608865s notice: Server got SIGTERM from pid 0, uid 0; shutting down...

编辑2:我在Docker之外运行了RethinkDB，我在日志中看到了这一点:错误:工作进程无法与主进程重新同步。不确定是否有什么需要担心的。它似乎根本不会影响 RethinkDB 实例(所有客户端都保持连接)。

2015-07-21T06:53:10.663375859 0.116098s info: Automatically using cache size of 10702 MB
2015-07-21T06:53:10.676277261 0.128998s notice: Listening for intracluster connections on port 29015
2015-07-21T06:53:10.684504354 0.137225s notice: Listening for client driver connections on port 28015
2015-07-21T06:53:10.685485550 0.138206s notice: Listening for administrative HTTP connections on port 8080
2015-07-21T06:53:10.686313405 0.139034s notice: Listening on addresses: 127.0.0.1, 172.17.42.1, 192.151.151.122, ::1, fe80::1879:43ff:fe5e:bdb2%34, fe80::62eb:69ff:fe07:d986%2, fe80::b837:f2ff:fecd:d5cd%4
2015-07-21T06:53:10.686316632 0.139037s notice: Server ready, "0aa312e817ef_nrx" 069ac5b3-9f43-4bbe-9022-c1f006790e99
2015-07-21T06:53:11.558116243 1.010837s error: worker process failed to resynchronize with main process
2015-07-21T06:53:11.558122179 1.010843s notice: A newer version of the RethinkDB server is available: 2.0.4. You can read the changelog at <https://github.com/rethinkdb/rethinkdb/releases>.

编辑3:我在这里发现了另一个问题，我认为这可能是真正的问题。重新思考适配器(在应用程序中)正在保持与已建立的数据库服务器的连接，这会耗尽系统中的可用文件描述符/端口。以下是 lsof 的打印输出示例。 注意这只是一个简短的列表。当多人使用系统时，有数百/数千个此类保持打开状态

node    11633 [username_ommitted]  201u    IPv4 0x53153575d33d64bb       0t0      TCP 192.168.1.142:61041->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  202u    IPv4 0x53153575d33fa65b       0t0      TCP 192.168.1.142:61053->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  203u    IPv4 0x53153575dd6a5d8b       0t0      TCP 192.168.1.142:61043->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  204u    IPv4 0x53153575bff6717b       0t0      TCP 192.168.1.142:61044->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  206u    IPv4 0x53153575d33e54bb       0t0      TCP 192.168.1.142:61049->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  207u    IPv4 0x53153575d33ef4bb       0t0      TCP 192.168.1.142:61050->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  208u    IPv4 0x53153575d33f2a4b       0t0      TCP 192.168.1.142:61051->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  209u    IPv4 0x53153575c333a17b       0t0      TCP 192.168.1.142:61054->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  210u    IPv4 0x53153575d33b47fb       0t0      TCP 192.168.1.142:61056->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  211u    IPv4 0x53153575d33de17b       0t0      TCP 192.168.1.142:61057->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  212u    IPv4 0x53153575d33f065b       0t0      TCP 192.168.1.142:61058->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  213u    IPv4 0x53153575bff67a4b       0t0      TCP 192.168.1.142:61059->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  216u    IPv4 0x53153575dd68f31b       0t0      TCP 192.168.1.142:61062->[RETHINK_IP]:28015 (ESTABLISHED)
node    11633 [username_ommitted]  217u    IPv4 0x53153575dd675a4b       0t0      TCP 192.168.1.142:61063->[RETHINK_IP]:28015 (ESTABLISHED)

Answer 1

我遇到了完全相同的问题，并认为这是由于未关闭数据库连接引起的(正如您在 EDIT 3 中所述)。我在expressjs应用程序中使用RethinkDB，并遵循here中的中间件示例但我总是在不调用 next() 的情况下终止 Controller 内的请求-响应周期，这意味着 closeConnection 中间件永远不会被访问。