EXAchk for Exadata Presentation

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EXAchk
Health Checks & Best Practices for Exadata

Safe Harbor Statement
The following is intended to outline our general product direction. It is intended for
information purposes only, and may not be incorporated into any contract. It is not a
commitment to deliver any material, code, or functionality, and should not be relied upon
in making purchasing decisions. The development, release, and timing of any features or
functionality described for Oracle’s products remains at the sole discretion of Oracle.
2

Agenda
1
2
Why EXAchk?
Development Methodology
Recommended Usage Overview
Report Structure
Detailed Usage Options
Collection Manager
Integration With Other Tools
Troubleshooting
3
4
5
6
7
8
3

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
4

Engineered to work
together with
Oracle Engineered Systems
Configuration specific
Health Checks
Saves Time Saves Money
Why EXAchk
5

–Automated risk identification and proactive notification
before business is impacted
–Health Checks based on most impactful reoccurring
problems across Oracle customer base
–Runs in your environment – no need to send anything to
Oracle
–Scheduled email Health Check reports
–Findings can be integrated into other tools of choice
Why EXAchk
Engineered
Systems
Non Engineered
Systems
EXAchk
ORAchk
Common Framework
Lightweight & non intrusive Health Check framework for the Oracle stack
6

Engineered to work together with Engineered Systems
• Exadata DBM is engineered for best, fastest, and stable database performance and
availability
• Hundreds / Thousands of QA, Test, & MAA tests through Exadata DBM Lifecycles
• Feedback from internal tests, customers and development teams including Maximum
Availability Architecture (MAA) is integrated into the product and/or EXAchk
7

Configuration specific Health Checks
• EXAchk provides configuration specific, up to date health check across the entire DBM
stack:
o Continuously evolving configuration checks for the entire Oracle Exadata Database Machine and the
software that runs upon it
o Exadata, DB, GI, ASM critical issues list specific for the environment
o Exadata full stack software planner
o MAA scorecard that highlights MAA configuration gaps and provide guidance to MAA and
consolidation best practices
o Automated scheduling ability and automatic difference identification between runs with email
notification
8

EXAchk Saves Time
• No time required on your part to develop checks (unless you want to…covered later)
o Hundreds of checks for best practices are provided
• Configuration is minimal
• Provides an automation framework which can be run fully automatically at scheduled
times or invoked adhoc on demand
• Executes quickly
o Parallelized execution keeps typical wall clock time low
• Provides prioritized, categorized report of findings focused on high priority issues first
• Provides self service guidance for each check
• Results can be integrated into your existing tools such as Oracle Enterprise Manager, 3rd
party tools such as Kibana or your own custom applications
9

Saves Money
• EXAchk is provided as a “value add” as part of your existing Support Contract
oNo extra cost for EXAchk, included within your support fee
o Available to download from My Oracle Support (1070954.1)
• No development costs required by your organization
o Health Checks developed and provided for free by Oracle
o With User Defined Checks you can use EXAchk as an automation platform to run your
own checks
10

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
11

• EXAchk is a lightweight, full-service best practice and critical issues evaluator for the
Exadata DBM
• Release cycles are targeted to 90 days, with Beta made available approximately two
weeks before production
o Interim releases may be released sooner if significant Critical Issues are discovered
o Also timed to coincide with major software releases and / or hardware changes
• Maintains backward compatibility
12

• Continuous improvement from:
o Enhancement requests / feedback from customers
o Exadata MAA Best Practices team
o Critical Issues discovery
o Internal testing, Proofs of Concepts & Support Partners
13

• EXAchk does not duplicate the function of other established tools
o Enterprise Manager for continuous monitoring
o AWR reports
o SQL tuning tools
o Advanced diagnostic gatherers
o Automated Service Request
o Storage server alert mechanisms
• EXAchk validates a given Exadata DBM configuration against a critical subset of the
Oracle MAA Exadata Best Practices (published in MOS doc 757552.1)
14

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
15

Recommended Usage – Automated Risk Notification
1) Schedule EXAchk to run in daemon mode weekly or
daily and email report
2) Identify actions easily by viewing automated
comparison of previous runs
3) Act on recommendations
16

Schedule EXAchk
?
Hour (0 – 23)
? ? ?
Day of month (1 – 31)
Month (1 – 12)
Day of week (0 – 6)
(0 to 6 are Sunday to Saturday)
example: exachk -set 'AUTORUN_SCHEDULE=8,20 * * 2,5' will schedule runs on Tuesday and Friday at 08:00 & 20:00
AUTORUN_SCHEDULE =
1717

• First email will contain the HTML report
Email Notification
18

View EXAchk Report
• Health score
• Summary of EXAchk run
• Table of content
• Controls for report features
• Findings
• Recommendations
19

View EXAchk Report
• Table of content
• Controls for report features
• Checks which passed are not shown by default
• Quickly show or hide checks based on their
status
• Show or hide major sections of the report
• Collapse or expand check findings
• Show check Ids
• Remove the findings from the report – This
doesn’t change the report but optionally hides
findings on a check by check basis
• Display a printable view
20

View EXAchk Findings
• Check status
• Type of Check
• Check Message
• Where the check was run
• Link to expand details
21

• What to do to solve the problem
• Links to relevant Knowledge docs
• Where recommendation applies
• Where problem doesn’t apply
• Example of data the
recommendation is based on
View Recommendations
22

Review MAA Score Card
• Critical Issues in MAA Scorecard
o All issues reported in “SOFTWARE
MAINTENANCE BEST PRACTICES”
• Software version mapping table
• Installed software versions checked
for noncurrent or incompatible
feature usage
(Many other areas of report, shown in demo sample later)
23

Subsequent emails compare results to
previous run
• Easily see if something has changed
• Email attachment has:
o Latest report
o Previous report
o Diff Report
Email Notification
24

Diff overview
• Summary of this run vs previous
Diff Output
25

Differences between each run
Diff Output
26

• Upgrade or Patching
o Detects all databases registered in the
clusterware automatically
o Presents list of databases to check
o Pre Upgrade
 Run during upgrade planning phase
 Asks which version you plan to upgrade to
o Post Upgrade
 Run after upgrade
• Other typical times to run EXAchk
o Machine moves
o Hardware failure / repair
o Problem troubleshooting
o In addition to go-live testing
• Other Key My Oracle Support notes
o MOS 757552.1 publishes the MAA Exadata Best
Practices
o MOS 888828.1 is the master Exadata version
reference
o Exadata Critical Issues (Doc ID 1270094.1)
Other Recommended Usage
./exachk -u –o pre
./exachk -u –o post
27

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
28

Report Demo
29

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
30

Supported Environments
• All supported hardware types, operating systems, firmware versions, and Oracle
versions for the following Oracle Engineered Systems:
o Big Data Appliance
o Exadata (V2 and above, HP hardware based V1 systems are not covered)
o Exalogic
o Exalytics
o SuperCluster
o Zero Data Loss Recovery Appliance
31

1. Included in base image
and latest OEDA
2. Download latest version
from My Oracle Support
(install < 1 min)
3. Auto update when later
version available
Roll Out & Maintain EXAchk
32

1. Download the exachk
bundle from MOS note
1070954.1 to your local
machine
2. Unzip it and transfer
exachk.zip to a
directory on the target
Engineered System
3. Unzip exack.zip
o As owner of oracle
database or grid home
Installation
33

• Run as root (recommended)
o EXAchk will su to lower privileged owners of
RDBMS or grid homes
o To specify a user other that root for these
situations:
• Run as RDBMS or GRID Home Owner
o User must be able to switch to root for root level
checks – several options:
1. Provide the root userid password at prompts
or
2. Set up sudo
or
3. Pre-configure passwordless SSH connectivity
Which User to Run EXAchk as
Connect via
SSH &
Run Checks on
Default User
Change User By
exporting user id in this
Environment Variable
Exadata
Storage Server
root RAT_CELL_SSH_USER
InfiniBand
switches
root
(when run as root)
RAT_IBSWITCH_USERnm2user
(when run as other user)
34
Note: You may only choose from the provided lower privileged accounts

Option 1 With internet connection
o When EXAchk is older than 120 days it will prompt
you to let it automatically download newer version
from My Oracle Support
o Can also be specifically triggered with:
Option 2 No internet connection
a) Download the latest exachk.zip to a shared
network staging location
b) Set environment variable RAT_UPGRADE_LOC:
c) Next time exachk script is started it will prompt to
allow it to upgrade itself
Maintaining EXAchk
./exachk -download
export RAT_UPGRADE_LOC=<staging dir>
35

Automated Usage with the Daemon
36

Set Daemon Options, When, What & Who to Tell
./exachk –set “<option_1>=<option_1_value>;<option_2>=<option_2_value>;<option_n>=<option_n_value>”
AUTORUN_SCHEDULE
• Schedule when exachk will be run
• Hour, day of month, month of year & day of week
• Comma separate multiple values for same timeframe
• * Wildcard
?
Hour (0 – 23)
? ? ?
Day of month (1 – 31)
Month (1 – 12)
Day of week (0 – 6)
(0 to 6 are Sunday to Saturday)
./exachk –set “AUTORUN_SCHEDULE=2 * * 1,3,5”
AUTORUN_FLAGS
• Command line options to be passed through to exachk run
./exachk –set “AUTORUN_FLAGS=-profile dba –tag dba”
NOTIFICATION_EMAIL
• Comma separated list of emails to send daemon notifications to
./exachk –set “NOTIFICATION_EMAIL=some.person@acompany.com,another.person@acompany.com”
37

Set Daemon Options, Maintenance
./exachk –set “<option_1>=<option_1_value>;<option_2>=<option_2_value>;<option_n>=<option_n_value>”
COLLECTION_RETENTION
• Number of days to keep files created by scheduled run, files older than this will be deleted
./exachk –set “COLLECTION_RETENTION=30”
PASSWORD_CHECK_INTERVAL
• Frequency in hours of password validation
• When found invalid daemon stops & notifies via log & email
./exachk –set “PASSWORD_CHECK_INTERVAL=48”
38

Set Daemon Options, Multiple IDs
• Only one Daemon process should be used across a database cluster
o Multiple daemon profiles can be configured using IDs
o Allows for multiple different types of exachk runs
./exachk –d <ID> –set “<option>=<value>”
39

Get Daemon Option
• Find a specific daemon option which has been set
• Use with or without ID
./exachk –d <ID> –get <option>
Get value of particular option for specific id
./exachk –get <option>
Get value of particular option for all IDs
40

Get All Daemon Options
• Find any Daemon options which have been set
• Used with or without ID
./exachk –d <ID> –get all
Get value of all options for specific id
./exachk –get all
Get value of all options for all IDs
41

Start Daemon
./exachk –d start
1. Start the daemon
2. Follow the prompts
42

Daemon Information
./exachk –d status
Check if the daemon is running:
./exachk –d info
Get more detailed information about the daemon
43

Daemon Next Autorun
./exachk –d nextautorun ./exachk –id <id> –d nextautorun
Find when the next auto run will happen: Find when the next auto run will happen for a specific ID
44

Daemon Stopping
./exachk –d stop_client ./exachk –d stop
Stop an exachk run mid-flow: Stop the daemon
45

Auto Restart Daemon
• Restart daemon if
machine restarts
o Uses passwordless ssh
user equivalence to root
./exachk –initsetup
46

Restart status of daemon can be queried: If you want to remove restart settings:
Auto Restart Daemon, Check Status & Remove Auto Restart
./exachk –initcheck ./exachk –initrmsetup
47

With or Without the Daemon
• When daemon is running, if exachk is run in adhoc mode it will connect to
the daemon by default and make use of pre-provided prompt values
o To avoid connecting to the daemon use –nodaemon:
o To only run exachk when the daemon is running use –daemon:
./exachk –nodaemon
./exachk –daemon
48

Email Notifications
• Run in ad hoc mode and receive html report via email
• Verify email configuration function
• Use –testemail all to use email addresses stored in daemon configuration
./exachk -sendemail "NOTIFICATION_EMAIL=abc@company.com,xyz@company.com"
./exachk -testemail "NOTIFICATION_EMAIL=abc@company.com,xyz@company.com"
./exachk -testemail all
49

Additional EXAchk Capabilities & Features
50

Health Check Catalog
• Bundled within .zip download
• Audit_Checks_Report_Exachk.html
• Contains all published checks
• Filterable & searchable
• Engineered System
• Profiles
• Alert Level
• Release Check Authored
• Platforms
• Look up check id without running report
51

Database Checks
• EXAchk runs checks against all database nodes in the cluster by default
o To specify only a subset of nodes use:
o Only local node:
• Automatically discovers all databases and prompts for which should be checked
o Do not prompt but run all checks on all discovered database:
o Do not prompt and skip all database related checks:
o Only run checks against a subset of databases:
./exachk –clusternodes <node_1>,<node_2>
./exachk –localonly
./exachk –dball
./exachk –dbnone
./exachk –dbnames <db_1>,<db_2>
52

Checks for Cells & Switches
• Run on a subset of cells using –cells
• Run on a subset of switches using -ibswitches
./exachk –cells <cell_1>,<cell_2>
./exachk –ibswitches <switch_1>,<switch_2>
53

Virtualization
1. Run from dom0 on first compute to cover all dom0s, cells and switches
o Install EXAchk into the management domain (DOM0) & run as root
o Will discover all compute nodes, storage servers and InfiniBand switches in the entire InfiniBand fabric
and run EXAchk on all
o If a single machine has been separated into multiple management domains
• Use -clusternodes, -cells, -ibswitches to detail the components of the separate management domains
2. Run once on each virtual cluster
54
./exachk –clusternodes <node_1>, <node_2> –cells <cell_1>,<cell_2> –ibswitches <switch_1>,<switch_2>

EXAchk Output
• EXAchk will output the collection results to the directory it is run from
o Output can be directed to a different directory with –output
• Output will be directory and a zip of the same name
./exachk –output <OUTPUT_DIR>
o log : various log files
o outfiles : collection results checks are based on
o Reports : subreports used to build the main report
o Scripts : scripts used during collection
o Upload : files for upload of collection into database
or integration into other tools
o exachk_*.html : Main HTML report output
55

Temporary Working Directory
• EXAchk will create temporary files during execution
• Default location is $HOME of the user EXAchk is running as
• Location can be changed by setting RAT_TMPDIR
• If using sudo access to root from a lower privileged user id, temporary
directory must be reflected in /etc/sudoers file
export RAT_TMPDIR=<TEMP_DIR>
./exachk
<user> ALL=(root) NOPASSWD:<TEMPDIR>/root_exachk.sh
56

Parallel Execution
• Database collections are executed in parallel
• The default number of slave processes used is calculated automatically
• Default can be changed with –dbparallel <# slave processes> or -dbparallelmax
• Parallel execution can be disabled altogether if required with -dbserial
./exachk –dbparallel <# slave processes> ./exachk –dbparallelmax
./exachk –dbserial
57

Tagging, Merging & Comparing Reports
• Collections are typically of the format: exachk_<dbserver>_<database>_<date>_<timestamp>.html
• Tag collections so output contains another word to help differentiate it:
exachk_<dbserver>_<database>_<date>_<timestamp>_<tag_name>.html
• Merge multiple reports into one with –merge and list of collection directories or zip
files:
• Force the merge of collections from dom0 and domu or global and local zones by adding
–force:
• Compare collections with –diff:
./exachk –merge <collection_1>,<collection_2>
./exachk –merge <collection_1>,<collection_2> -force
./exachk –diff <collection_1>,<collection_2>
./exachk –tag <tag_name>
58

• Profiles provide logical grouping of
checks which are about similar topics
• Run only checks in a specific profile
• Run everything except checks in a specific
profile
Profiles
./exachk –profile <profile>
./exachk –excludeprofile <profile>
Profile Description
asm ASM Checks
avdf Audit Vault Configuration checks
clusterware Oracle clusterware checks
control_VM Checks only for Control VM(ec1-vm, ovmm, db, pc1, pc2).
No cross node checks
corroborate Exadata checks needs further review by user to determine
pass or fail
dba DBA Checks
ebs Oracle E-Business Suite checks
eci_healthchecks Enterprise Cloud Infrastructure Healthchecks
ecs_healthchecks Enterprise Cloud System Healthchecks
goldengate Oracle GoldenGate checks
hardware Hardware specific checks for Oracle Engineered systems
maa Maximum Availability Architecture Checks
ovn Oracle Virtual Networking
platinum Platinum certification checks
preinstall Pre-installation checks
prepatch Checks to execute before patching
security Security checks
solaris_cluster Solaris Cluster Checks
storage Oracle Storage Server Checks
switch Infiniband switch checks
sysadmin Sysadmin checks
user_defined_checks Run user defined checks from user_defined_checks.xml
59

Run or exclude individual checks
• Granular control to execute or exclude a single check
• Ideal for testing new checks or troubleshooting
• Run only specific check(s):
• Exclude a specific check:
• Find check id either from report or Health Check Catalog
./exachk -check <check_id_1>,<check_id_2>
./exachk –excludecheck <check_id_1>,<check_id_2>
60

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
61

Collection Manager Dashboard
62

Dashboard Filters
Filter by
Interval
Filter by
configurable
business units Filter by
systems
Click on color coded
area to drill down
63

Most Failures & Warnings
Click to see the
recommendation details
64

Most Failures
Click to drill into
failures
65

Most Warnings
Click to drill into
warnings
66

No difference OR No regression
failed in current collection
At least one regression from
Non-WARNING to WARNING OR
Found WARNING regression in
current collection
At least one regression from
Non-FAIL to FAIL OR Found FAIL
regression in current collection
Non clickable green flag -
Preceding collection not found
Recent Collections
Health
Score Warning count
Fail count Info count Pass count
Ignore count
67

View Collection
Collection
Link
68

View Collection
Recommendation
69

User Defined Checks
• Use as a Health Checking Platform
• You write your own business
specific User Defined Checks
• Collection Manager authoring UI
very similar to Oracle’s internal
authoring tool
• OS or SQL logic
• Generates user_defined_checks.xml
sample in install directory
• Utilizes framework features such as
result output, email notification,
CM storage etc
70

User Defined Checks
• Have their own profile:
user_defined_checks
• Can be excluded:
./exachk -excludeprofile user_defined_checks
• Have their own section of the report
./exachk -profile user_defined_checks
• Can be run on their own:
71

Collection Manager Setup
1. Ensure APEX 4.2 is installed & configured
2. Follow Collection Manager installation in Collection Manager User Guide
3. Login to Collection Manager Application via a URL like the following
o Format will depend on choices during installation
http://hostname:port/apex/f?p=ApplicationID
http://hostname:port/pls/apex/f?p=ApplicationID
72

Collection Storage Table
• Collection zip files are stored in the
RCA13_DOCS table
o Already created during collection manager
installation
• Provide EXAchk where to upload collection
results by providing connection string &
password via –setdbupload and completing
prompts:
• Get current values with:
• Unset values with:
./exachk -setdbupload RAT_UPLOAD_CONNECT_STRING,RAT_UPLOAD_PASSWORD
./exachk –unsetdbupload RAT_UPLOAD_PASSWORD
./exachk -getdbupload
73

Store DB Upload Variables in Wallet
• Set all with:
• Set specific variables by specifying comma separated list:
• Unset all with
• Check if variables are set correctly:
./exachk -setdbupload all
./exachk -setdbupload RAT_UPLOAD_CONNECT_STRING,RAT_UPLOAD_PASSWORD
./exachk -unsetdbupload all
./exachk -checkdbupload
74

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
75

Integrating With
Oracle Enterprise Manager Cloud Control 13.1
76

Enterprise Manager Integration
•Check results integrated into EM
compliance framework via plugin
•View results in native EM
compliance dashboards
•Related checks grouped into
compliance standards
•View targets checked, violations &
average score
•Drill down into compliance standard
to see individual check results
•View break down by target
77

• Integration is via the Enterprise
Manager ORAchk Healthchecks
plugin with the following Support:
• The following prerequisites must be met
before you can deploy the plug-in:
o Verify that your Engineered Systems hardware
and software are at the supported level as
described in Supported Hardware and Software
Versions
o All Engineered System plug-ins should be
deployed
o InfiniBand switches and storage cells should be
an Enterprise Manager-managed target for the
respective engineered system
o Expect package should be installed on the
hosts
Enterprise Manager Plugin Perquisites
Hardware Types
Supported
By Plugin
Exadata (physical configuration only) Yes
Exadata (virtual configuration) No
Recovery appliance Yes
Exalogic (physical configuration) Yes
Exalogic (virtualized configuration) Yes
Oracle SuperCluster No
Oracle Private Cloud Machine No
78

Setting Up Enterprise Manager EXAchk Plugin
• The plugin is already installed by default with Enterprise Manager 13.1
1. Deploy the plugin using the Enterprise Manager Plugin Deployment feature
2. Provision the plugin to setup the EXAchk daemon
79

• Use Enterprise Manager provisioning
feature and select ORAchk/EXAchk
• After selected this will launch the
provisioning wizard, choose the system
type
Provision EXAchk
80

Provision EXAchk
• Provide new or select existing
credentials
• Specify install location
• Select when daemon should be run
81

Provision EXAchk
• Verify CRS Home
• Finally choose Cell & InfiniBand
configuration
82

Drill into applicable standard and view
individaul checks & target status
View Results by Compliance Standard
Filter by Exachk%”
Click individual checks for
recommendation details
83

Integrating With 3rd Party Tools
84

JSON Output to Integrate with Kibana, Elastic Search etc
85

• EXAchk results are also output in
JSON format in the upload
directory of the collection
• Writing JSON Results With syslog
1. JSON output results can be sent to the
syslogd Daemon with –syslog option e.g.:
2. EXAchk uses the message levels of “crit”,
“err”, “warn” and “info”
3. You can verify syslog configuration by
running the following commands:
4. Then verify in your configured message
location (e.g. /var/adm/messages) that each
test message was written.
JSON Result Output
./exachk –set “AUTORUN_FLAGS=-syslog”
86

Integrating With Your Own Application
87

Custom App Integration
• If you don’t use Collection Manager and have your own application which consumes
the EXAchk results
1. Create the tables: auditcheck_result, auditcheck_patch_result & RCA13_DOCS tables
2. Tell EXAchk about these tables: ./exachk -setdbupload all
• EXAchk results will be uploaded into
the tables after execution, which can
be consumed by your own App
88

Agenda
1
2
Why EXAchk?
Report Structure
Collection Manager
Troubleshooting
3
4
5
6
7
8
89

• View Component Elapsed Times
o Identify if one particular component is slow
• View top 10 Time Consuming Checks
o If some in particular are slow, show check_id
and run again with:
Troubleshooting Performance
./exachk –excludecheck <check_id>
• Try increasing the number of parallel
slave processes (Note: will increase resource usage)
./exachk –dbparallelmax
90

• If checks are being killed this will be due
to timeout:
• Timeouts can be caused by slow checks or
interactive prompts
• Try increasing default times with applicable
environment variables:
• EBS checks query application data which
can vary hugely in size depending on the
size of your data
oIf you suspect EBS checks try excluding
EBS profile:
oUse RAT_TIMEOUT to increase to a
value where they are no longer killed
Troubleshooting Timeouts
./exachk –excludeprofile ebs
91
Environment Variable Timeout Controlled
Default Value
(seconds)
RAT_TIMEOUT
non-root individual
commands
90
RAT_ROOT_TIMEOUT
root userid command
sets
300
RAT_PASSWORDCHECK_TIMEOUT
ssh login DNS
handshake
1

• Debugging via Daemon • Debugging adhoc EXAchk runs
Collecting Debug
./exachk –d start_debug ./exachk –debug
• Debug output:
92

Safe Harbor Statement
The preceding is intended to outline our general product direction. It is intended for
information purposes only, and may not be incorporated into any contract. It is not a
commitment to deliver any material, code, or functionality, and should not be relied upon
in making purchasing decisions. The development, release, and timing of any features or
functionality described for Oracle’s products remains at the sole discretion of Oracle.
93

EXAchk for Exadata Presentation

EXAchk for Exadata Presentation

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