SHOW HOSTS

SHOW HOSTS语句可以显示Graph、Storage、Meta服务主机信息、版本信息。

语法

  1. SHOW HOSTS [GRAPH | STORAGE | META];

不添加服务名，直接使用SHOW HOSTS，会显示Storage服务主机信息，以及leader总数、leader分布和分片分布。

示例

  1. nebula> SHOW HOSTS;
  2. +-------------+-------+----------+--------------+----------------------------------+-----------------------------+
  3. | Host        | Port  | Status   | Leader count | Leader distribution              | Partition distribution      |
  4. +-------------+-------+----------+--------------+----------------------------------+-----------------------------+
  5. | "storaged0" | 9779  | "ONLINE" | 8            | "docs:5, basketballplayer:3"     | "docs:5, basketballplayer:3"|
  6. +-------------+-------+----------+--------------+----------------------------------+-----------------------------+
  7. | "storaged1" | 9779  | "ONLINE" | 9            | "basketballplayer:4, docs:5"     | "docs:5, basketballplayer:4"|
  8. +-------------+-------+----------+--------------+----------------------------------+-----------------------------+
  9. | "storaged2" | 9779  | "ONLINE" | 8            | "basketballplayer:3, docs:5"     | "docs:5, basketballplayer:3"|
  10. +-------------+-------+----------+--------------+----------------------------------+-----------------------------+
  12. nebula> SHOW HOSTS GRAPH;
  13. +-----------+------+----------+---------+---------------+------------------------------------------+
  14. | Host      | Port | Status   | Role    | Git Info Sha | Version                                   |
  15. +-----------+------+----------+---------+--------------+-------------------------------------------+
  16. | "graphd"  | 9669 | "ONLINE" | "GRAPH" | "c397299c"   | "2.5.0, Build Time: Aug 19 2021 11:20:18" |
  17. +-----------+------+----------+---------+--------------+-------------------------------------------+
  18. | "graphd1" | 9669 | "ONLINE" | "GRAPH" | "c397299c"   | "2.5.0, Build Time: Aug 19 2021 11:20:18" |
  19. +-----------+------+----------+---------+--------------+-------------------------------------------+
  20. | "graphd2" | 9669 | "ONLINE" | "GRAPH" | "c397299c"   | "2.5.0, Build Time: Aug 19 2021 11:20:18" |
  21. +-----------+------+----------+---------+--------------+-------------------------------------------+
  23. nebula> SHOW HOSTS STORAGE;
  24. +-------------+------+----------+-----------+--------------+-------------------------------------------+
  25. | Host        | Port | Status   | Role      | Git Info Sha | Version                                   |
  26. +-------------+------+----------+-----------+--------------+-------------------------------------------+
  27. | "storaged0" | 9779 | "ONLINE" | "STORAGE" | "5b83e5cb"   | "2.5.0, Build Time: Aug 19 2021 10:30:28" |
  28. +-------------+------+----------+-----------+--------------+-------------------------------------------+
  29. | "storaged1" | 9779 | "ONLINE" | "STORAGE" | "5b83e5cb"   | "2.5.0, Build Time: Aug 19 2021 10:30:28" |
  30. +-------------+------+----------+-----------+--------------+-------------------------------------------+
  31. | "storaged2" | 9779 | "ONLINE" | "STORAGE" | "5b83e5cb"   | "2.5.0, Build Time: Aug 19 2021 10:30:28" |
  32. +-------------+------+----------+-----------+--------------+-------------------------------------------+
  34. nebula> SHOW HOSTS META;
  35. +----------+------+----------+--------+--------------+-------------------------------------------+
  36. | Host     | Port | Status   | Role   | Git Info Sha | Version                                   |
  37. +----------+------+----------+--------+--------------+-------------------------------------------+
  38. | "metad2" | 9559 | "ONLINE" | "META" | "5b83e5cb"   | "2.5.0, Build Time: Aug 19 2021 10:30:28" |
  39. +----------+------+----------+--------+--------------+-------------------------------------------+
  40. | "metad0" | 9559 | "ONLINE" | "META" | "5b83e5cb"   | "2.5.0, Build Time: Aug 19 2021 10:30:28" |
  41. +----------+------+----------+--------+--------------+-------------------------------------------+
  42. | "metad1" | 9559 | "ONLINE" | "META" | "5b83e5cb"   | "2.5.0, Build Time: Aug 19 2021 10:30:28" |
  43. +----------+------+----------+--------+--------------+-------------------------------------------+