v1.6.1 (#146)

5a5bf043 · Rongfeng Fu · GitHub · 1530c143 · 5a5bf043 · 5a5bf043
27 changed file
--- a/_cmd.py
+++ b/_cmd.py
@@ -854,6 +854,7 @@ class ClusterTenantCreateCommand(ClusterMirrorCommand):
        self.parser.add_option('--max-session-num', type='int', help="Max session unit number. Not supported after version 4.0")
        self.parser.add_option('--unit-num', type='int', help="Pool unit number.")
        self.parser.add_option('-z', '--zone-list', type='string', help="Tenant zone list.")
+        self.parser.add_option('--mode', type='string', help='Tenant compatibility mode. {mysql,oracle} [mysql]', default='mysql')
        self.parser.add_option('--charset', type='string', help="Tenant charset.")
        self.parser.add_option('--collate', type='string', help="Tenant COLLATE.")
        self.parser.add_option('--replica-num', type='int', help="Tenant replica number.")
@@ -925,6 +926,8 @@ class MySQLTestCommand(TestMirrorCommand):
    def __init__(self):
        super(MySQLTestCommand, self).__init__('mysqltest', 'Run a mysqltest for a deployment.')
+        self.parser.add_option('--mode', type='string', help='Test mode. Available values are mysql, oracle, and both.', default='both')
+        # self.parser.add_option('--case-mode', type='string', help='case run mode [mysql,oracle]', default='mysql')
        self.parser.add_option('--component', type='string', help='Components for mysqltest.')
        self.parser.add_option('--test-server', type='string', help='The server for mysqltest. By default, the first root server in the component is the mysqltest server.')
        self.parser.add_option('--user', type='string', help='Username for a test. [admin]', default='admin')
@@ -1042,7 +1045,7 @@ class TPCHCommand(TestMirrorCommand):
        self.parser.add_option('--remote-tbl-dir', type='string', help='Directory for the tbl on target observers. Make sure that you have read and write access to the directory when you start observer.')
        self.parser.add_option('--disable-transfer', '--dt', action='store_true', help='Disable the transfer. When enabled, OBD will use the tbl files under remote-tbl-dir instead of transferring local tbl files to remote remote-tbl-dir.')
        self.parser.add_option('--dss-config', type='string', help='Directory for dists.dss. [/usr/tpc-h-tools/tpc-h-tools]', default='/usr/tpc-h-tools/tpc-h-tools/')
-        self.parser.add_option('-O', '--optimization', type='int', help='Optimization level {0/1}. [1]', default=1)
+        self.parser.add_option('-O', '--optimization', type='int', help='Optimization level {0/1/2}. [1] 0 - No optimization. 1 - Optimize some of the parameters which do not need to restart servers. 2 - Optimize all the parameters and maybe RESTART SERVERS for better performance.', default=1)
        self.parser.add_option('--test-only', action='store_true', help='Only testing SQLs are executed. No initialization is executed.')
        self.parser.add_option('-S', '--skip-cluster-status-check', action='store_true', help='Skip cluster status check', default=False)

--- a/_deploy.py
+++ b/_deploy.py
@@ -625,6 +625,8 @@ class ClusterConfig(object):
        return error
    def set_global_conf(self, conf):
+        if not isinstance(conf, dict):
+            raise Exception('%s global config is not a dictionary. Please check the syntax of your configuration file.\n See https://github.com/oceanbase/obdeploy/blob/master/docs/zh-CN/4.configuration-file-description.md' % self.name)
        self._original_global_conf = deepcopy(conf)
        self._global_conf = None
        self._clear_cache_server()

--- a/_errno.py
+++ b/_errno.py
@@ -62,6 +62,8 @@ EC_FAIL_TO_CONNECT = OBDErrorCode(1006, 'Failed to connect to {component}')
 EC_ULIMIT_CHECK = OBDErrorCode(1007, '({server}) {key} must not be less than {need} (Current value: {now})')
 EC_OBSERVER_NOT_ENOUGH_MEMORY = OBDErrorCode(2000, '({ip}) not enough memory. (Free: {free}, Need: {need})')
+EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE = OBDErrorCode(2000, '({ip}) not enough memory. (Available: {available}, Need: {need})')
+EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED = OBDErrorCode(2000, '({ip}) not enough memory. (Free: {free}, Buff/Cache: {cached}, Need: {need})')
 EC_OBSERVER_CAN_NOT_MIGRATE_IN = OBDErrorCode(2001, 'server can not migrate in')
 EC_OBSERVER_FAIL_TO_START = OBDErrorCode(2002, 'Failed to start {server} observer')
 EC_OBSERVER_NOT_ENOUGH_DISK_4_CLOG = OBDErrorCode(2003, '({ip}) {path} not enough disk space for clog. Use redo_dir to set other disk for clog, or reduce the value of datafile_size')

--- a/_repository.py
+++ b/_repository.py
@@ -172,7 +172,9 @@ class ParallerExtractWorker(object):
 class ParallerExtractor(object):
-    MAX_PARALLER = cpu_count() if cpu_count() else 8
+    MAX_PARALLER = cpu_count() * 2 if cpu_count() else 8
+    MAX_SIZE = 100
+    MIN_SIZE = 20
    def __init__(self, pkg, files, stdio=None):
        self.pkg = pkg
@@ -180,11 +182,13 @@ class ParallerExtractor(object):
        self.stdio = stdio
    def extract(self):
+        if not self.files:
+            return
        workers = []
        file_num = len(self.files)
-        paraler = int(min(self.MAX_PARALLER, file_num))
+        paraller = int(min(self.MAX_PARALLER, file_num))
-        size = min(100, int(file_num / paraler))
+        size = min(self.MAX_SIZE, int(file_num / paraller)) # 
-        size = int(max(10, size))
+        size = int(max(self.MIN_SIZE, size))
        index = 0
        while index < file_num:
            p_index = index + size
@@ -195,7 +199,7 @@ class ParallerExtractor(object):
            ))
            index = p_index
-        pool = Pool(processes=paraler)
+        pool = Pool(processes=paraller)
        try:
            results = pool.map(ParallerExtractWorker.extract, workers)
            for r in results:

--- a/core.py
+++ b/core.py
@@ -890,7 +890,7 @@ class ObdHome(object):
        self._call_stdio('verbose', 'Get deploy configuration')
        deploy_config = deploy.deploy_config
        if not deploy_config:
-            self._call_stdio('error', 'Deploy configuration is empty.\nIt may be caused by a failure to resolve the configuration.\nPlease check your configuration file.')
+            self._call_stdio('error', 'Deploy configuration is empty.\nIt may be caused by a failure to resolve the configuration.\nPlease check your configuration file.\nSee https://github.com/oceanbase/obdeploy/blob/master/docs/zh-CN/4.configuration-file-description.md')
            return False
        # Check the best suitable mirror for the components and installation plugins. Install locally
@@ -1061,7 +1061,7 @@ class ObdHome(object):
            return False
        deploy_config = deploy.deploy_config
        if not deploy_config:
-            self._call_stdio('error', 'Deploy configuration is empty.\nIt may be caused by a failure to resolve the configuration.\nPlease check your configuration file.')
+            self._call_stdio('error', 'Deploy configuration is empty.\nIt may be caused by a failure to resolve the configuration.\nPlease check your configuration file.\nSee https://github.com/oceanbase/obdeploy/blob/master/docs/zh-CN/4.configuration-file-description.md')
            return False
        style = getattr(options, 'style', '')
@@ -1211,11 +1211,11 @@ class ObdHome(object):
        self._call_stdio('verbose', 'Get deploy configuration')
        deploy_config = deploy.deploy_config
        if not deploy_config:
-            self._call_stdio('error', 'Deploy configuration is empty.\nIt may be caused by a failure to resolve the configuration.\nPlease check your configuration file.')
+            self._call_stdio('error', 'Deploy configuration is empty.\nIt may be caused by a failure to resolve the configuration.\nPlease check your configuration file.\nSee https://github.com/oceanbase/obdeploy/blob/master/docs/zh-CN/4.configuration-file-description.md')
            return False
        if not deploy_config.components:
-            self._call_stdio('error', 'Components not detected.\nPlease check the syntax of your configuration file.')
+            self._call_stdio('error', 'Components not detected.\nPlease check the syntax of your configuration file.\nSee https://github.com/oceanbase/obdeploy/blob/master/docs/zh-CN/4.configuration-file-description.md')
            return False
        for component_name in deploy_config.components:

--- a/docs/en-US/3.user-guide/3.obd-command/0.obd-demo.md
+++ b/docs/en-US/3.user-guide/3.obd-command/0.obd-demo.md
+# Quick deployment command
+## obd demo
+You can use this command to deploy and start the specified component on the local server without loading the configuration file. The fixed name of the cluster deployed is `demo`. After the deployment, you can run the `obd cluster list` command to view the cluster in the cluster list. You can also run other cluster commands, such as `obd cluster display demo`, to manage the cluster.
+```bash
+obd demo [-c/--components]
+```
+The following table describes the parameters.
+| Parameter | Required | Data type | Default value | Description |
+|------------------|---------|------------|----------|--------------------------------------------------------------------|
+| -c/--components | No | String | oceanbase-ce,obproxy-ce,obagent,prometheus,grafana | The list of components that are separated with commas (`,`). You can use this parameter to specify the components to be deployed. |
+By default, this command deploys the minimum specifications in the home directory of the current user, and the latest versions are deployed by default. You can use this command to deploy OceanBase Community Edition, OBProxy Community Edition, OBAgent, Grafana, and Prometheus.
+You can select the version and specify the configurations of a component to be deployed.
+```bash
+# Deploy components of the specified version.
+obd demo -c oceanbase-ce,obproxy-ce --oceanbase-ce.version=3.1.3
+# Specify the components to be deployed and the package hash of OceanBase Community Edition.
+obd demo -c oceanbase-ce,obproxy-ce --oceanbase-ce.package_hash=f38723204d49057d3e062ffad778edc1552a7c114622bf2a86fea769fbd202ea
+# Specify the installation path for all components to be deployed.
+## Deploy OceanBase Community Edition and OBProxy Community Edition in the /data/demo directory and create corresponding working directories for them.
+obd demo -c oceanbase-ce,obproxy-ce --home_path=/data/demo
+# Specify the installation path for all components to be deployed.
+obd demo --home_path=/path
+# Specify the installation path for a specific component to be deployed.
+## Deploy OceanBase Community Edition in the home directory and create a working directory for it, and deploy OBProxy Community Edition in the /data/playground/obproxy-ce directory.
+obd demo -c oceanbase-ce,obproxy-ce --obproxy-ce.home_path=/data/demo/
+# Specify the configurations of a component to be deployed.
+## Specify the mysql_port parameter of OceanBase Community Edition.
+obd demo --oceanbase-ce.mysql_port=3881
+```
+> **Notice**
+>
+> This command supports only level-1 configurations under global that are specified by using options.
--- a/optimize/obproxy/4.0.0/sysbench.yaml
+++ b/optimize/obproxy/4.0.0/sysbench.yaml
+test:
+  system_config:
+  - name: proxy_mem_limited
+    value: 2G
+  - name: slow_proxy_process_time_threshold
+    value: 500ms
+  - name: syslog_level
+    value: error
+    query_key: level
+  - name: enable_prometheus
+    value: false
+  - name: enable_compression_protocol
+    value: false
+    need_restart: true
+    value_type: BOOL
+  - name: enable_ob_protocol_v2
+    value: false
+    need_restart: true
+    value_type: BOOL
+  - name: work_thread_num
+    value: 128
+    need_restart: true
+  - name: enable_async_log
+    value: true
\ No newline at end of file
--- a/optimize/obproxy/4.0.0/tpcc.yaml
+++ b/optimize/obproxy/4.0.0/tpcc.yaml
+build:
+  system_config:
+  - name: proxy_mem_limited
+    value: 2G
+  - name: slow_proxy_process_time_threshold
+    value: 500ms
+  - name: syslog_level
+    value: error
+    query_key: level
+  - name: enable_prometheus
+    value: false
+  - name: enable_compression_protocol
+    value: false
+    need_restart: true
+    value_type: BOOL
+  - name: enable_ob_protocol_v2
+    value: false
+    need_restart: true
+    value_type: BOOL
+  - name: work_thread_num
+    value: 128
+    need_restart: true
+  - name: enable_async_log
+    value: true
\ No newline at end of file
--- a/plugins/grafana/7.5.17/oceanbase-metrics_rev1.json
+++ b/plugins/grafana/7.5.17/oceanbase-metrics_rev1.json
@@ -218,11 +218,11 @@
          "exemplar": true,
          "expr": "(sum(rate(ob_sysstat{stat_id=\"40003\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40005\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40009\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40009\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40001\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group))\n/\n(sum(rate(ob_sysstat{stat_id=\"40002\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40004\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40006\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40008\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"40000\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group))",
          "interval": "",
-          "legendFormat": "qps rt {{$group}}",
+          "legendFormat": "sql latency {{$group}}",
          "refId": "A"
        }
      ],
-      "title": "QPS rt",
+      "title": "Sql Latency",
      "type": "timeseries"
    },
    {
@@ -2129,7 +2129,7 @@
          "exemplar": true,
          "expr": "(sum(rate(ob_sysstat{stat_id=\"10005\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"10006\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group)) / sum(rate(ob_sysstat{stat_id=\"10000\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group)",
          "interval": "",
-          "legendFormat": "roc in rt {{$group}}",
+          "legendFormat": "rpc in Latency {{$group}}",
          "refId": "A"
        },
        {
@@ -2137,11 +2137,11 @@
          "expr": "(sum(rate(ob_sysstat{stat_id=\"10005\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group) + sum(rate(ob_sysstat{stat_id=\"10006\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group)) / sum(rate(ob_sysstat{stat_id=\"10002\",ob_cluster_name=~\"$obcluster\",obzone=~\"$obzone\",svr_ip=~\"$observer\",tenant_name=~\"$tenant_name\"}[$__rate_interval])) by ($group)",
          "hide": false,
          "interval": "",
-          "legendFormat": "rpc out rt {{$group}}",
+          "legendFormat": "rpc out latency {{$group}}",
          "refId": "B"
        }
      ],
-      "title": "Rpc rt",
+      "title": "Rpc Latency",
      "type": "timeseries"
    },
    {

--- a/plugins/mysqltest/3.1.0/init.py
+++ b/plugins/mysqltest/3.1.0/init.py
@@ -36,7 +36,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes
@@ -127,6 +127,7 @@ def init(plugin_context, env, *args, **kwargs):
        exec_init = 'init.sql'
        exec_mini_init = 'init_mini.sql'
        exec_init_user = 'init_user.sql|root@mysql|test'
+        exec_init_user_for_oracle = 'init_user_oracle.sql|SYS@oracle|SYS'
        client = plugin_context.clients[server]
        memory_limit = get_memory_limit(cursor, client)
        is_mini = memory_limit and parse_size(memory_limit) < (16<<30)

--- a/plugins/mysqltest/4.0.0.0/init.py
+++ b/plugins/mysqltest/4.0.0.0/init.py
@@ -36,7 +36,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/plugins/obproxy/3.1.0/display.py
+++ b/plugins/obproxy/3.1.0/display.py
@@ -56,12 +56,12 @@ def display(plugin_context, cursor, *args, **kwargs):
                continue
            password = ob_config.get('root_password', '')
            with_observer = True
-            cmd = 'obclient -h%s -P%s -uroot %s-Doceanbase' % (server.ip, server_config['listen_port'], '-p%s ' % password if password else '')
+            cmd = 'obclient -h%s -P%s -uroot %s-Doceanbase -A' % (server.ip, server_config['listen_port'], '-p%s ' % password if password else '')
            break
    if not with_observer:
        password = server_config.get('obproxy_sys_password', '')
-        cmd = 'obclient -h%s -P%s -uroot@proxysys %s-Doceanbase' % (server.ip, server_config['listen_port'], '-p%s ' % password if password else '')
+        cmd = 'obclient -h%s -P%s -uroot@proxysys %s-Doceanbase -A' % (server.ip, server_config['listen_port'], '-p%s ' % password if password else '')
    stdio.print(cmd)

--- a/plugins/obproxy/3.1.0/file_map.yaml
+++ b/plugins/obproxy/3.1.0/file_map.yaml
- src_path: ./home/admin/obproxy-$version/bin/obproxy
+- src_path: ./opt/taobao/install/obproxy-$version/bin/obproxy
  target_path: bin/obproxy
  type: bin
  mode: 755
\ No newline at end of file
--- a/plugins/obproxy/3.1.0/generate_config.py
+++ b/plugins/obproxy/3.1.0/generate_config.py
@@ -47,7 +47,7 @@ def generate_config(plugin_context, deploy_config, auto_depend=False, *args, **k
    if getattr(plugin_context.options, 'mini', False):
        if 'proxy_mem_limited' not in global_config:
-            cluster_config.update_global_conf('proxy_mem_limited', '200M', False)
+            cluster_config.update_global_conf('proxy_mem_limited', '500M', False)
    ob_comps = ['oceanbase', 'oceanbase-ce']
    ob_cluster_config = None

--- a/plugins/oceanbase/3.1.0/create_tenant.py
+++ b/plugins/oceanbase/3.1.0/create_tenant.py
@@ -35,7 +35,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'^([1-9][0-9]*)\s*([B,K,M,G,T])$', size.upper())
+        match = re.match(r'^(0|[1-9][0-9]*)\s*([B,K,M,G,T])$', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/plugins/oceanbase/3.1.0/display.py
+++ b/plugins/oceanbase/3.1.0/display.py
@@ -36,7 +36,7 @@ def display(plugin_context, cursor, *args, **kwargs):
                    stdio.print_list(servers, ['ip', 'version', 'port', 'zone', 'status'], 
                        lambda x: [x['svr_ip'], x['build_version'].split('_')[0], x['inner_port'], x['zone'], x['status']], title='observer')
                    password = cluster_config.get_global_conf().get('root_password', '')
-                    cmd = 'obclient -h%s -P%s -uroot %s-Doceanbase' % (servers[0]['svr_ip'], servers[0]['inner_port'], '-p%s ' % password if password else '') 
+                    cmd = 'obclient -h%s -P%s -uroot %s-Doceanbase -A' % (servers[0]['svr_ip'], servers[0]['inner_port'], '-p%s ' % password if password else '') 
                    stdio.print(cmd)
                    stdio.stop_loading('succeed')
                    return plugin_context.return_true()

--- a/plugins/oceanbase/3.1.0/generate_config.py
+++ b/plugins/oceanbase/3.1.0/generate_config.py
@@ -23,7 +23,7 @@ from __future__ import absolute_import, division, print_function
 import re, os
-from _errno import EC_OBSERVER_NOT_ENOUGH_MEMORY
+from _errno import EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE, EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED
 def parse_size(size):
@@ -32,7 +32,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes
@@ -90,6 +90,7 @@ def generate_config(plugin_context, deploy_config, *args, **kwargs):
    MIN_MEMORY = 8 << 30
    MIN_CPU_COUNT = 16
+    START_NEED_MEMORY = 3 << 30
    clog_disk_utilization_threshold_max = 95
    clog_disk_usage_limit_percentage_max = 98
    global_config = cluster_config.get_original_global_conf()
@@ -158,16 +159,32 @@ def generate_config(plugin_context, deploy_config, *args, **kwargs):
            if not server_config.get('memory_limit'):
                ret = client.execute_command('cat /proc/meminfo')
                if ret:
-                    free_memory = 0
+                    server_memory_stats = {}
+                    memory_key_map = {
+                        'MemTotal': 'total',
+                        'MemFree': 'free',
+                        'MemAvailable': 'available',
+                        'Buffers': 'buffers',
+                        'Cached': 'cached'
+                    }
+                    for key in memory_key_map:
+                        server_memory_stats[memory_key_map[key]] = 0
                    for k, v in re.findall('(\w+)\s*:\s*(\d+\s*\w+)', ret.stdout):
-                        if k == 'MemAvailable':
+                        if k in memory_key_map:
-                            free_memory = parse_size(str(v))
+                            key = memory_key_map[k]
-                    memory_limit = free_memory
+                            server_memory_stats[key] = parse_size(str(v))
-                    if memory_limit < MIN_MEMORY:
-                        stdio.error(EC_OBSERVER_NOT_ENOUGH_MEMORY.format(ip=ip, free=format_size(free_memory), need=format_size(MIN_MEMORY)))
+                    if server_memory_stats['available'] < START_NEED_MEMORY:
+                        stdio.error(EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE.format(ip=ip, available=format_size(server_memory_stats['available']), need=format_size(START_NEED_MEMORY)))
+                        success = False
+                        continue
+                    if server_memory_stats['free'] + server_memory_stats['buffers'] + server_memory_stats['cached'] < MIN_MEMORY:
+                        stdio.error(EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED.format(ip=ip, free=format_size(server_memory_stats['free']), cached=format_size(server_memory_stats['buffers'] + server_memory_stats['cached']), need=format_size(MIN_MEMORY)))
                        success = False
                        continue
-                    memory_limit = max(MIN_MEMORY, memory_limit * 0.9)
+                    memory_limit = max(MIN_MEMORY, server_memory_stats['available'] * 0.9)
                    server_config['memory_limit'] = format_size(memory_limit, 0)
                    cluster_config.update_server_conf(server, 'memory_limit', server_config['memory_limit'], False)
                else:

--- a/plugins/oceanbase/3.1.0/reload.py
+++ b/plugins/oceanbase/3.1.0/reload.py
@@ -115,10 +115,11 @@ def reload(plugin_context, cursor, new_cluster_config, *args, **kwargs):
            for server in servers:
                if key not in change_conf[server]:
                    continue
+                value = change_conf[server][key]
                msg = sql = 'alter system set %s = %%s server=%%s' % key
                stdio.verbose('execute sql: %s' % msg)
-                cursor.execute(sql, [change_conf[server][key], cluster_server[server]])
+                cursor.execute(sql, [value, cluster_server[server]])
-                cluster_config.update_server_conf(server,key, value, False)
+                cluster_config.update_server_conf(server, key, value, False)
        except:
            global_ret = False
            stdio.exception('execute sql exception: %s' % msg)

--- a/plugins/oceanbase/3.1.0/start_check.py
+++ b/plugins/oceanbase/3.1.0/start_check.py
@@ -24,7 +24,11 @@ import os
 import re
 import time
-from _errno import EC_OBSERVER_NOT_ENOUGH_DISK_4_CLOG, EC_CONFIG_CONFLICT_PORT, EC_OBSERVER_NOT_ENOUGH_MEMORY, EC_ULIMIT_CHECK, WC_ULIMIT_CHECK
+from _errno import (
+    EC_OBSERVER_NOT_ENOUGH_DISK_4_CLOG, EC_CONFIG_CONFLICT_PORT, 
+    EC_OBSERVER_NOT_ENOUGH_MEMORY, EC_ULIMIT_CHECK, WC_ULIMIT_CHECK,
+    EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE, EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED
+)
 stdio = None
@@ -46,8 +50,9 @@ def parse_size(size):
    if not isinstance(size, str) or size.isdigit():
        _bytes = int(size)
    else:
+        print (size)
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes
@@ -90,6 +95,7 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
        global success
        success = False
        stdio.error(*arg, **kwargs)
    global stdio
    cluster_config = plugin_context.cluster_config
    clients = plugin_context.clients
@@ -101,6 +107,8 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
    servers_clog_mount = {}
    servers_net_inferface = {}
    server_num = len(cluster_config.servers)
+    START_NEED_MEMORY = 3 << 30
    stdio.start_loading('Check before start observer')
    for server in cluster_config.servers:
        ip = server.ip
@@ -119,7 +127,7 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
            servers_port[ip] = {}
            servers_clog_mount[ip] = {}
            servers_net_inferface[ip] = {}
-            servers_memory[ip] = {'num': 0, 'percentage': 0}
+            servers_memory[ip] = {'num': 0, 'percentage': 0, 'server_num': 0}
        memory = servers_memory[ip]
        ports = servers_port[ip]
        disk = servers_disk[ip]
@@ -137,6 +145,8 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
            }
            if get_port_socket_inode(client, port):
                critical('%s:%s port is already used' % (ip, port))
+        memory['server_num'] += 1
        if 'memory_limit' in server_config:
            try:
                memory['num'] += parse_size(server_config['memory_limit'])
@@ -234,16 +244,29 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
        # memory
        ret = client.execute_command('cat /proc/meminfo')
        if ret:
-            total_memory = 0
+            server_memory_stats = {}
-            free_memory = 0
+            memory_key_map = {
+                'MemTotal': 'total',
+                'MemFree': 'free',
+                'MemAvailable': 'available',
+                'Buffers': 'buffers',
+                'Cached': 'cached'
+            }
+            for key in memory_key_map:
+                server_memory_stats[memory_key_map[key]] = 0
            for k, v in re.findall('(\w+)\s*:\s*(\d+\s*\w+)', ret.stdout):
-                if k == 'MemTotal':
+                if k in memory_key_map:
-                    total_memory = parse_size(str(v))
+                    key = memory_key_map[k]
-                elif k == 'MemAvailable':
+                    server_memory_stats[key] = parse_size(str(v))
-                    free_memory = parse_size(str(v))
-            total_use = servers_memory[ip]['percentage'] * total_memory / 100 + servers_memory[ip]['num']
+            min_start_need = servers_memory[ip]['server_num'] * START_NEED_MEMORY
-            if total_use > free_memory:
+            total_use = servers_memory[ip]['percentage'] * server_memory_stats['total'] / 100 + servers_memory[ip]['num']
-                error(EC_OBSERVER_NOT_ENOUGH_MEMORY.format(ip=ip, free=format_size(free_memory), need=format_size(total_use)))
+            if min_start_need > server_memory_stats['available']:
+                error(EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE.format(ip=ip, available=format_size(server_memory_stats['available']), need=format_size(min_start_need)))
+            elif total_use > server_memory_stats['free'] + server_memory_stats['buffers'] + server_memory_stats['cached']:
+                error(EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED.format(ip=ip, free=format_size(server_memory_stats['free']), cached=format_size(server_memory_stats['buffers'] + server_memory_stats['cached']), need=format_size(min_start_need)))
+            elif total_use > server_memory_stats['free']:
+                alert(EC_OBSERVER_NOT_ENOUGH_MEMORY.format(ip=ip, free=format_size(server_memory_stats['free']), need=format_size(min_start_need)))
        # disk
        disk = {'/': 0}
        ret = client.execute_command('df --block-size=1024')

--- a/plugins/oceanbase/4.0.0.0/create_tenant.py
+++ b/plugins/oceanbase/4.0.0.0/create_tenant.py
@@ -35,7 +35,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'^([1-9][0-9]*)\s*([B,K,M,G,T])$', size.upper())
+        match = re.match(r'^(0|[1-9][0-9]*)\s*([B,K,M,G,T])$', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/plugins/oceanbase/4.0.0.0/generate_config.py
+++ b/plugins/oceanbase/4.0.0.0/generate_config.py
@@ -23,7 +23,7 @@ from __future__ import absolute_import, division, print_function
 import re, os
-from _errno import EC_OBSERVER_NOT_ENOUGH_MEMORY
+from _errno import EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE, EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED
 def parse_size(size):
@@ -32,7 +32,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes
@@ -106,6 +106,7 @@ def generate_config(plugin_context, deploy_config, *args, **kwargs):
    PRO_MEMORY_MIN = 16 << 30
    SLOG_SIZE = 10 << 30
    MIN_CPU_COUNT = 16
+    START_NEED_MEMORY = 3 << 30
    if getattr(plugin_context.options, 'mini', False):
        if not global_config.get('memory_limit_percentage') and not global_config.get('memory_limit'):
            cluster_config.update_global_conf('memory_limit', format_size(MIN_MEMORY, 0), False)
@@ -161,18 +162,35 @@ def generate_config(plugin_context, deploy_config, *args, **kwargs):
            if not server_config.get('memory_limit'):
                ret = client.execute_command('cat /proc/meminfo')
                if ret:
-                    free_memory = 0
+                    server_memory_stats = {}
+                    memory_key_map = {
+                        'MemTotal': 'total',
+                        'MemFree': 'free',
+                        'MemAvailable': 'available',
+                        'Buffers': 'buffers',
+                        'Cached': 'cached'
+                    }
+                    for key in memory_key_map:
+                        server_memory_stats[memory_key_map[key]] = 0
                    for k, v in re.findall('(\w+)\s*:\s*(\d+\s*\w+)', ret.stdout):
-                        if k == 'MemAvailable':
+                        if k in memory_key_map:
-                            free_memory = parse_size(str(v))
+                            key = memory_key_map[k]
-                    memory_limit = free_memory
+                            server_memory_stats[key] = parse_size(str(v))
-                    if memory_limit < min_memory:
-                        stdio.error(EC_OBSERVER_NOT_ENOUGH_MEMORY.format(ip=ip, free=format_size(free_memory), need=format_size(min_memory)))
+                    if server_memory_stats['available'] < START_NEED_MEMORY:
+                        stdio.error(EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE.format(ip=ip, available=format_size(server_memory_stats['available']), need=format_size(START_NEED_MEMORY)))
+                        success = False
+                        continue
+                    if server_memory_stats['free'] + server_memory_stats['buffers'] + server_memory_stats['cached'] < MIN_MEMORY:
+                        stdio.error(EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED.format(ip=ip, free=format_size(server_memory_stats['free']), cached=format_size(server_memory_stats['buffers'] + server_memory_stats['cached']), need=format_size(MIN_MEMORY)))
                        success = False
                        continue
-                    memory_limit = max(min_memory, memory_limit * 0.9)
+                    memory_limit = max(MIN_MEMORY, server_memory_stats['available'] * 0.9)
                    server_config['memory_limit'] = format_size(memory_limit, 0)
                    cluster_config.update_server_conf(server, 'memory_limit', server_config['memory_limit'], False)
+                    auto_set_memory = True
                else:
                    stdio.error("%s: fail to get memory info.\nPlease configure 'memory_limit' manually in configuration file")
                    success = False
@@ -180,7 +198,6 @@ def generate_config(plugin_context, deploy_config, *args, **kwargs):
            else:
                try:
                    memory_limit = parse_size(server_config.get('memory_limit'))
-                    auto_set_memory = True
                except:
                    stdio.error('memory_limit must be an integer')
                    return
@@ -300,14 +317,14 @@ def generate_config(plugin_context, deploy_config, *args, **kwargs):
                        continue
                    disk_free = disk_free - log_size - SLOG_SIZE
-                    memory_factor = 0
+                    memory_factor = 6
                    if auto_set_datafile_size is False:
                        disk_free -= min_datafile_size
-                        memory_factor += 3
+                        memory_factor -= 3
                    if auto_set_log_disk_size is False:
                        disk_free -= min_log_disk_size
-                        memory_factor += 3
+                        memory_factor -= 3
-                    memory_limit = format_size(disk_free / memory_factor, 0)
+                    memory_limit = format_size(disk_free / max(1, memory_factor), 0)
                    cluster_config.update_server_conf(server, 'memory_limit', memory_limit, False)
                    memory_limit = parse_size(memory_limit)
                    if auto_set_system_memory:

--- a/plugins/oceanbase/4.0.0.0/start_check.py
+++ b/plugins/oceanbase/4.0.0.0/start_check.py
@@ -24,8 +24,11 @@ import os
 import re
 import time
-from _errno import EC_OBSERVER_NOT_ENOUGH_DISK_4_CLOG, EC_CONFIG_CONFLICT_PORT, EC_OBSERVER_NOT_ENOUGH_MEMORY, EC_ULIMIT_CHECK, WC_ULIMIT_CHECK
+from _errno import (
+    EC_OBSERVER_NOT_ENOUGH_DISK_4_CLOG, EC_CONFIG_CONFLICT_PORT, 
+    EC_OBSERVER_NOT_ENOUGH_MEMORY, EC_ULIMIT_CHECK, WC_ULIMIT_CHECK,
+    EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE, EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED
+)
 stdio = None
 success = True
@@ -47,7 +50,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes
@@ -113,6 +116,7 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
    PRO_MEMORY_MIN = 16 << 30
    PRO_POOL_MEM_MIN = 2147483648
+    START_NEED_MEMORY = 3 << 30
    stdio.start_loading('Check before start observer')
    for server in cluster_config.servers:
        ip = server.ip
@@ -131,7 +135,7 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
            servers_port[ip] = {}
            servers_clog_mount[ip] = {}
            servers_net_inferface[ip] = {}
-            servers_memory[ip] = {'num': 0, 'percentage': 0}
+            servers_memory[ip] = {'num': 0, 'percentage': 0, 'server_num': 0}
        memory = servers_memory[ip]
        ports = servers_port[ip]
        disk = servers_disk[ip]
@@ -154,6 +158,7 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
        if server_config.get('production_mode') and __min_full_resource_pool_memory < PRO_POOL_MEM_MIN:
            error('(%s): when production_mode is True, __min_full_resource_pool_memory can not be less then %s' % (server, PRO_POOL_MEM_MIN))
+        memory['server_num'] += 1
        if 'memory_limit' in server_config:
            try:
                memory_limit = parse_size(server_config['memory_limit'])
@@ -171,6 +176,7 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
                return
        else:
            memory['percentage'] += 80
        data_path = server_config['data_dir'] if server_config.get('data_dir') else  os.path.join(server_config['home_path'], 'store')
        redo_dir = server_config['redo_dir'] if server_config.get('redo_dir') else  data_path
        clog_dir = server_config['clog_dir'] if server_config.get('clog_dir') else  os.path.join(redo_dir, 'clog')
@@ -261,16 +267,29 @@ def _start_check(plugin_context, strict_check=False, *args, **kwargs):
        # memory
        ret = client.execute_command('cat /proc/meminfo')
        if ret:
-            total_memory = 0
+            server_memory_stats = {}
-            free_memory = 0
+            memory_key_map = {
+                'MemTotal': 'total',
+                'MemFree': 'free',
+                'MemAvailable': 'available',
+                'Buffers': 'buffers',
+                'Cached': 'cached'
+            }
+            for key in memory_key_map:
+                server_memory_stats[memory_key_map[key]] = 0
            for k, v in re.findall('(\w+)\s*:\s*(\d+\s*\w+)', ret.stdout):
-                if k == 'MemTotal':
+                if k in memory_key_map:
-                    total_memory = parse_size(str(v))
+                    key = memory_key_map[k]
-                elif k == 'MemAvailable':
+                    server_memory_stats[key] = parse_size(str(v))
-                    free_memory = parse_size(str(v))
-            total_use = servers_memory[ip]['percentage'] * total_memory / 100 + servers_memory[ip]['num']
+            min_start_need = servers_memory[ip]['server_num'] * START_NEED_MEMORY
-            if total_use > free_memory:
+            total_use = servers_memory[ip]['percentage'] * server_memory_stats['total'] / 100 + servers_memory[ip]['num']
-                error(EC_OBSERVER_NOT_ENOUGH_MEMORY.format(ip=ip, free=format_size(free_memory), need=format_size(total_use)))
+            if min_start_need > server_memory_stats['available']:
+                error(EC_OBSERVER_NOT_ENOUGH_MEMORY_ALAILABLE.format(ip=ip, available=format_size(server_memory_stats['available']), need=format_size(min_start_need)))
+            elif total_use > server_memory_stats['free'] + server_memory_stats['buffers'] + server_memory_stats['cached']:
+                error(EC_OBSERVER_NOT_ENOUGH_MEMORY_CACHED.format(ip=ip, free=format_size(server_memory_stats['free']), cached=format_size(server_memory_stats['buffers'] + server_memory_stats['cached']), need=format_size(min_start_need)))
+            elif total_use > server_memory_stats['free']:
+                alert(EC_OBSERVER_NOT_ENOUGH_MEMORY.format(ip=ip, free=format_size(server_memory_stats['free']), need=format_size(min_start_need)))
        # disk
        disk = {'/': 0}
        ret = client.execute_command('df --block-size=1024')

--- a/plugins/sysbench/3.1.0/pre_test.py
+++ b/plugins/sysbench/3.1.0/pre_test.py
@@ -35,7 +35,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1 << 10, "M": 1 << 20, "G": 1 << 30, "T": 1 << 40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/plugins/sysbench/4.0.0.0/pre_test.py
+++ b/plugins/sysbench/4.0.0.0/pre_test.py
@@ -35,7 +35,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1 << 10, "M": 1 << 20, "G": 1 << 30, "T": 1 << 40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/plugins/tpch/3.1.0/run_test.py
+++ b/plugins/tpch/3.1.0/run_test.py
@@ -40,7 +40,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/plugins/tpch/4.0.0.0/run_test.py
+++ b/plugins/tpch/4.0.0.0/run_test.py
@@ -41,7 +41,7 @@ def parse_size(size):
        _bytes = int(size)
    else:
        units = {"B": 1, "K": 1<<10, "M": 1<<20, "G": 1<<30, "T": 1<<40}
-        match = re.match(r'([1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
+        match = re.match(r'(0|[1-9][0-9]*)\s*([B,K,M,G,T])', size.upper())
        _bytes = int(match.group(1)) * units[match.group(2)]
    return _bytes

--- a/ssh.py
+++ b/ssh.py
@@ -368,7 +368,7 @@ class SshClient(SafeStdio):
        _transporter = RemoteTransporter.CLIENT
        if not self._is_local() and self._remote_transporter is None:
            if not self.config.password and not self.disable_rsync:
-                ret = LocalClient.execute_command('rsync -h', stdio=self.stdio)
+                ret = LocalClient.execute_command('rsync -h', stdio=self.stdio) and self.execute_command('rsync -h', stdio=self.stdio)
                if ret:
                    _transporter = RemoteTransporter.RSYNC
        self._remote_transporter = _transporter
@@ -418,8 +418,10 @@ class SshClient(SafeStdio):
    def _rsync(self, source, target, stdio=None):
        identity_option = ""
        if self.config.key_filename:
-            identity_option += '-e "ssh -i {key_filename} "'.format(key_filename=self.config.key_filename)
+            identity_option += '-i {key_filename} '.format(key_filename=self.config.key_filename)
-        cmd = 'rsync -a -W {identity_option} {source} {target}'.format(
+        if self.config.port:
+            identity_option += '-p {}'.format(self.config.port)
+        cmd = 'rsync -a -W -e "ssh {identity_option}" {source} {target}'.format(
            identity_option=identity_option,
            source=source,
            target=target