I am trying to set up some monitoring for my host. I know that I can access it via the macro $HOSTADDRESS$, but how can I actually append the correct string to it? The $HOSTADDRESS$ won't return anything on just the root (so nothing on /), but I want it rather to check on /health-check. Is it possible to append the /health-check to $HOSTADDRESS$ somehow?
Using Opsview 6, which is based on Nagios.
You can pass the change to check_http in your service description
check_http --help
...
-u, --url=PATH
URL to GET or POST (default: /)
...
check_command check_http!--url=/health-check
Related
I have uploaded thousands of files to google storage, and i found out all the files miss content-type,so that my website cannot get it right.
i wonder if i can set some kind of policy like changing all the files content-type at the same time, for example, i have bunch of .html files inside the bucket
a/b/index.html
a/c/a.html
a/c/a/b.html
a/a.html
.
.
.
is that possible to set the content-type of all the .html files with one command in the different place?
You could do:
gsutil -m setmeta -h Content-Type:text/html gs://your-bucket/**.html
There's no a unique command to achieve the behavior you are looking for (one command to edit all the object's metadata) however, there's a command from gcloud to edit the metadata which you could use on a bash script to make a loop through all the objects inside the bucket.
1.- Option (1) is to use a the gcloud command "setmeta" on a bash script:
# kinda pseudo code here.
# get the list with all your object's names and iterate over the metadata edition command.
for OUTPUT in $(get_list_of_objects_names)
do
gsutil setmeta -h "[METADATA_KEY]:[METADATA_VALUE]" gs://[BUCKET_NAME]/[OBJECT_NAME]
# the "gs://[BUCKET_NAME]/[OBJECT_NAME]" would be your object name.
done
2.- You could also create a C++ script to achieve the same thing:
namespace gcs = google::cloud::storage;
using ::google::cloud::StatusOr;
[](gcs::Client client, std::string bucket_name, std::string object_name,
std::string key, std::string value) {
# you would need to find list all the objects, while on the loop, you can edit the metadata of the object.
for (auto&& object_metadata : client.ListObjects(bucket_name)) {
string bucket_name=object_metadata->bucket(), object_name=object_metadata->name();
StatusOr<gcs::ObjectMetadata> object_metadata =
client.GetObjectMetadata(bucket_name, object_name);
gcs::ObjectMetadata desired = *object_metadata;
desired.mutable_metadata().emplace(key, value);
StatusOr<gcs::ObjectMetadata> updated =
client.UpdateObject(bucket_name, object_name, desired,
gcs::Generation(object_metadata->generation()))
}
}
I'm new to jboss-cli and working through the 'jboss-cli recipes'.
Question
How do I read one specific property using jboss-cli? E.g.
jboss.home.dir (e.g. "-Djboss.home.dir=/path/to/my/jboss")
Xmx ("-Xmx=4G")
Context
The "CLI Recipes" documentation has this helpful example to get all system properties. However its 'too much infomration'. I want to script reading one specific property.
https://docs.jboss.org/author/display/WFLY10/CLI+Recipes#CLIRecipes-
Overview of all system properties in JBoss AS7+ including OS system
properties and properties specified on command line using -D, -P or
--properties arguments.
Standalone
[standalone#IP_ADDRESS:9999 /] /core-service=platform-mbean/type=runtime:read-attribute(name=system-properties)
Thanks in advance
You could do a :
:resolve-expression(expression=${jboss.home.dir})
You can use the cli like this:
$JBOSS_HOME/bin/jboss-cli.sh -c --command=/system-property=MY_PROPERTY:read-resource
you get an output like this:
$JBOSS_HOME/bin/jboss-cli.sh -c --command=/system-property=MY_PROPERTY:read-resource
{
"outcome" => "success",
"result" => {"value" => "4.0"}
}
which you can extract by piping into something like this:
<cli command> | grep "{\"value\"" | sed "s/.*value\" => \"\([^\"]*\)\".*/\1/"
its a bit ugly, and there are some nasty edge cases if the values were to be something like "value" => "value =" or something hideous.
In general this works OK.
Change the sed command to be a bit more specific to fix that.
This link pointed me to the answer: I can use a groovy script to get the values. From what I see the "jboss-cli command line" does not offer this flexibility.
https://developer.jboss.org/wiki/AdvancedCLIScriptingWithGroovyRhinoJythonEtc
Solution
Here's a solution for jboss home.
[For memory you can get results from "/core-service=platform-mbean/type=memory/:read-attribute(name=heap-memory-usage)"
bash
#!/bin/sh
# Note: must set jbbin to 'jboss home /bin'
groovy -cp $jbbin/client/jboss-cli-client.jar readJbossHome.groovy
Groovy
Note: this is 'quick and dirty'.
import org.jboss.as.cli.scriptsupport.*
cli = CLI.newInstance()
cli.connect()
// Define properties
myParentProp="system-properties"
myProp="jboss.home.dir"
// Retrieve and pluck values
result = cli.cmd("/core-service=platform-mbean/type=runtime:read-resource(recursive=true,include-runtime=false)")
myResult = result.getResponse().get("result")
myParentVal = myResult.get(myParentProp)
myVal = myParentVal.get(myProp)
// Print out results
println "Property detail ${myProp} is ${myVal}"
cli.disconnect()
You can also do it via Wildfly management rest call.
http://localhost:9990/management
POST
Headers = Content-Type:application/json
Body =
{
"operation":"resolve-expression",
"expression":"${jboss.home.dir}"
}
With newer Teiid DOCs I have found some useful information I thought this might be helpful to share to people coming across a similar usecase
https://access.redhat.com/documentation/en-us/jboss_enterprise_application_platform/6.3/html/administration_and_configuration_guide/configure_system_properties_using_the_management_cli
Helps Adding, Removing & Reading System Properties with jboss-cli
jboss-cli
If you have a cli command like ehsavoie suggested :resolve-expression(expression=${jboss.home.dir}) and want to use the content of the "result" property within jboss-cli you can save it in a variable. You can use backticks (`) to evaluate expressions.
simple expression
[standalone#localhost:9990 /] :resolve-expression(expression=${jboss.home.dir})
{
"outcome" => "success",
"result" => "/home/user/wildfly"
}
use in valiable
[standalone#localhost:9990 /] set wildflydirectory=`:resolve-expression(expression=${jboss.home.dir})`
[standalone#localhost:9990 /] echo $wildflydirectory
/home/user/wildfly
PowerShell
If you happen to use the PowerShell you can use a one-liner to extract even deeply nested results with the help of the cli's --output-json option and PowerShell's ConvertFrom-Json cmdlet. In this way the parsing problem from James Roberts's approach with grep and sed are gone.
$value=(Invoke-Expression "./jboss-cli.ps1 -c --command=':resolve-expression(expression=`${jboss.home.dir})' --output-json" | ConvertFrom-Json).result
It is a bit tricky to quote the command and escape the correct PowerShell special characters.
I'm using a script that is supposed to add an attribute to an LDAP record. It used to work, then we moved the LDAP server from Solaris Unix to Linux.
Now the script doesn't work and throws an error
The LDIF file looks like this :
dn:cn=template-uid,ou=Groups,o=mycompany.com,o=Company
changetype:modify
mgrpRFC822MailMember:new#gmail.com
ldapmodify gets called like this :
ldapmodify -h ldap.mycompany.com -D "cn=LDAPuser" -w *pswd* -v -p 636 -f updateUser.ldif
This is the error that gets thrown :
ldapmodify: Invalid parameter "mgrpRFC822MailMember" specified for changetype modify
If I log into LDAP using an LDAP browser with the same user, I can manually add the attribute without any problem. I just can't do it from command line.
Any ideas ?
Thanks
Assuming it should add a value to mgrpRFC822MailMember, it should be:
dn: cn=template-uid,ou=Groups,o=mycompany.com,o=Company
changetype: modify
add: mgrpRFC822MailMember
mgrpRFC822MailMember: new#gmail.com
A changetype of modify needs an action defined, which would be one of: add, delete, replace. That is then followed by the attribute name to take the action on. I'm surprised it worked at all in the previous form.
I am trying to install the AEM CQ as windows service in publish mode. But it is getting installed as an author.
I have changed the variable to publish in instsrv.bat
D:\AdobeAEM\crx-quickstart\opt\helpers\instsrv.bat
:: runmode(s)
set cq_runmode="publish"
:: HTTP port
set cq_port=4503
Still, it is opening in author mode.
I have not configured author in this server
Am I missing something?
if you are working con CQ5.5 It's ok, but in AEM(5.6) It's impossible to install it as publish mode if you installed it as author before.
Based on what you described it sounds like you added JVM parameters to the jvm_options variable without separating the values with the # character. If you don't separate them with '#' or ';' then the runmode will not get included in the --JvmOptions= parameter passed to prunsrv. See the section code below from instsrv.bat which shows this.
:: default JVM options
:: separate multiple entries by ";" or "#"
:: if you need these chars put them inside single quotes
set jvm_options=-XX:MaxPermSize=256M
::* ------------------------------------------------------------------------------
::* do not configure below this point
::* ------------------------------------------------------------------------------
set main_class=org.apache.sling.launchpad.app.Main
set start_param=start#-c#.#-i#launchpad
if defined cq_runmode (set jvm_options=%jvm_options%#-Dsling.run.modes=%cq_runmode%)
Part of script that calls prunsrv:
:run_install
chdir /D %~dp0
prunsrv //IS//%service_name% --Description="%service_description%" --DisplayName="%service_name%" --Startup="%service_startmode%" --StartPath=%context% --Classpath=%CQ_JARFILE% --JvmMx=%jvm_mx% --JvmOptions=%jvm_options% --StdOutput=%context%\logs\startup.log --StdError=%context%\logs\startup.log --LogPath=%context%\logs --PidFile=..\conf\cq.pid --StartMode jvm --StartClass=%main_class% --StartParams=%start_param% --StopMode=jvm --StopClass=%main_class% --StopParams=%stop_param% --Jvm=%jvm_path%
if defined start (net start %service_name%)
goto exit
How does one access command line flag (arguments) as environment variables in Erlang. (As flags, not ARGV) For example:
RabbitMQ cli looks something like:
erl \
...
-sasl errlog_type error \
-sasl sasl_error_logger '{file,"'${RABBITMQ_SASL_LOGS}'"}' \
... # more stuff here
If one looks at sasl.erl you see the line:
get_sasl_error_logger() ->
case application:get_env(sasl, sasl_error_logger) of
% ... etc
By some unknown magic the sasl_error_logger variable becomes an erlang tuple! I've tried replicating this in my own erlang application, but I seem to be only able to access these values via init:get_argument, which returns the value as a string.
How does one pass in values via the commandline and be able to access them easily as erlang terms?
UPDATE Also for anyone looking, to use environment variables in the 'regular' way use os:getenv("THE_VAR")
Make sure you set up an application configuration file
{application, fred,
[{description, "Your application"},
{vsn, "1.0"},
{modules, []},
{registered,[]},
{applications, [kernel,stdlib]},
{env, [
{param, 'fred'}
]
...
and then you can set your command line up like this:
-fred param 'billy'
I think you need to have the parameter in your application configuration to do this - I've never done it any other way...
Some more info (easier than putting it in a comment)
Given this
{emxconfig, {ets, [{keypos, 2}]}},
I can certainly do this:
{ok, {StorageType, Config}} = application:get_env(emxconfig),
but (and this may be important) my application is started at this time (may actually just need to be loaded and not actually started from looking at the application_controller code).