檢視Redis叢集所有節點記憶體工具

weixin_33843409發表於2018-09-02
Redis記憶體
指定叢集中任意一個節點，檢視叢集中所有節點當前已用實體記憶體、配置的最大實體記憶體和系統實體記憶體。

原始碼（可從下載）：
  1. #!/bin/bash
  2. # Query the memory of all nodes in a cluster
  3. #
  4. # Output example:
  5. # $ ./query_redis_cluster.sh 192.168.0.31.21:6379
  6. # [192.168.0.31.21:6379] Used: 788.57M Max: 15.00G System: 125.56G
  7. # [192.168.0.31.22:6380] Used: 756.98M Max: 15.00G System: 125.56G
  8. # [192.168.0.31.23:6380] Used: 743.93M Max: 15.00G System: 125.56G
  9. # [192.168.0.31.24:6380] Used: 21.73M Max: 15.00G System: 125.56G
  10. # [192.168.0.31.25:6380] Used: 819.11M Max: 15.00G System: 125.56G
  11. # [192.168.0.31.24:6379] Used: 771.70M Max: 15.00G System: 125.56G
  12. # [192.168.0.31.26:6379] Used: 920.77M Max: 15.00G System: 125.56G
  13. # [192.168.0.31.27:6380] Used: 889.09M Max: 15.00G System: 125.27G
  14. # [192.168.0.31.28:6379] Used: 741.24M Max: 15.00G System: 125.56G
  15. # [192.168.0.31.29:6380] Used: 699.55M Max: 15.00G System: 125.56G
  16. # [192.168.0.31.27:6379] Used: 752.89M Max: 15.00G System: 125.27G
  17. # [192.168.0.31.21:6380] Used: 716.05M Max: 15.00G System: 125.56G
  18. # [192.168.0.31.23:6379] Used: 784.82M Max: 15.00G System: 125.56G
  19. # [192.168.0.31.26:6380] Used: 726.40M Max: 15.00G System: 125.56G
  20. # [192.168.0.31.25:6379] Used: 726.09M Max: 15.00G System: 125.56G
  21. # [192.168.0.31.29:6379] Used: 844.59M Max: 15.00G System: 125.56G
  22. # [192.168.0.31.28:6380] Used: 14.00M Max: 15.00G System: 125.56G
  23. # [192.168.0.31.22:6379] Used: 770.13M Max: 15.00G System: 125.56G
  25. REDIS_CLI=${REDIS_CLI:-redis-cli}
  26. REDIS_IP=${REDIS_IP:-127.0.0.1}
  27. REDIS_PORT=${REDIS_PORT:-6379}
  29. function usage()
  30. {
  31. echo "Usage: `basename $0` redis_node"
  32. echo "Example: `basename $0` 127.0.0.1:6379"
  33. }
  35. # with a parameter: single redis node
  36. if test $# -ne 1; then
  37. usage
  38. exit 1
  39. fi
  41. eval $(echo "$1" | awk -F[\:] '{ printf("REDIS_IP=%s\nREDIS_PORT=%s\n",$1,$2) }')
  42. if test -z "$REDIS_IP" -o -z "$REDIS_PORT"; then
  43. echo "Parameter error"
  44. usage
  45. exit 1
  46. fi
  48. # 確保redis-cli可用
  49. which "$REDIS_CLI" > /dev/null 2>&1
  50. if test $? -ne 0; then
  51. echo "\`redis-cli\` not exists or not executable"
  52. exit 1
  53. fi
  55. redis_nodes=`redis-cli -h $REDIS_IP -p $REDIS_PORT cluster nodes | awk -F[\ \:\@] '!/ERR/{ printf("%s:%s\n",$2,$3); }'`
  56. if test -z "$redis_nodes"; then
  57. # standlone
  58. $REDIS_CLI -h $REDIS_IP -p $REDIS_PORT FLUSHALL
  59. else
  60. # cluster
  61. for redis_node in $redis_nodes;
  62. do
  63. if test ! -z "$redis_node"; then
  64. eval $(echo "$redis_node" | awk -F[\:] '{ printf("redis_node_ip=%s\nredis_node_port=%s\n",$1,$2) }')
  66. if test ! -z "$redis_node_ip" -a ! -z "$redis_node_port"; then
  67. items=(`$REDIS_CLI -h $redis_node_ip -p $redis_node_port INFO MEMORY 2>&1 | tr '\r' ' '`)
  69. used_memory_rss_human=0
  70. maxmemory_human=0
  71. total_system_memory_human=0
  72. for item in "${items[@]}"
  73. do
  74. eval $(echo "$item" | awk -F[\:] '{ printf("name=%s\nvalue=%s\n",$1,$2) }')
  76. if test "$name" = "used_memory_rss_human"; then
  77. used_memory_rss_human=$value
  78. elif test "$name" = "maxmemory_human"; then
  79. maxmemory_human=$value
  80. elif test "$name" = "total_system_memory_human"; then
  81. total_system_memory_human=$value
  82. fi
  83. done
  85. echo -e "[\033[1;33m${redis_node_ip}:${redis_node_port}\033[m]\tUsed: \033[0;32;32m$used_memory_rss_human\033[m\tMax: \033[0;32;32m$maxmemory_human\033[m\tSystem: \033[0;32;32m$total_system_memory_human\033[m"
  86. fi
  87. fi
  88. done
  89. fi



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